S A B S 1 2 C O L-1983

SOUTH A F R I C A N BUREAU OF STANDARDS

S T A N D A R D I Z E D S P E C I F I C A T I O N

€or

C I V I L E N G I N E E R I N G C O N S T R U C T I O N

L : MEDIUM-PRESSURE P I P E L I N E S

A p p r o v e d by t h e C O U N C I L OF T H E SOUTH A F R I C A N BUREAU O F STANDARDS on 2 March 1983

O b t a i n a b l e from t h e S A BUREAU O F STANDARDS Private Bag X191 Pretor ia 0001 R e p u b l i c of South A f r i c a

Telegrams : Comparator, Pretoria C O P Y R I G H T R E S E R V E D

Published and pr in ted i n t h e R e p u b l i c of South A f r i c a by t h e South A f r i c a n Bureau of Standards

ISBN 0-626-06424-4 Gr 7

5 SNF; 1200 L-19135 Medium-pressure pipelines

SO~ITII AFRICAN BUREAU OF STANDARDS

STANDARDIZED SPECIFICATION for

CIVIL ENGINEER3 NG CONSTRUCTION

L : MEDIUM-PRESSURE PIPELINES

1. 1.1

2. 2.1 2.1.1

2.1.2

2.2

2.3

2.4

3. 3.1

3.2

3.3

SCOPE This specification covers the supply and installation of pipelines of diameter up to 1 000 mm, Complete wit.h ancillary works, for transporting water and sewage under working pressures of up to 2 . 5 MPa. NOTE: The standards referred to in the specification are listed in Appendix A.

INTF:RPHETATIONS REFERENCES Code of Practice. far as they are applicable. Supporting Specifications. cations shall, inter alia, form part of the contract document: a) Project specification; b) SABS 1200 A or SABS 1200 AA, as applicable; c) SARS 1200 D or SABS 1200 DA, as applicable; d) SARS 1200 DB; e) SAHS 1200 G or SABS 1200 GA, as applicable; f) SABS 1200 1.B; 9) SABS 1200 LK.

APPLICATION. pipelines. specification which precedes this specification in a contract document.

DEFINITIONS. specifications listed in 2.1.2(b)-(g) ajid the following definitions shall apply: Fitting a) A special or valve. b) Any process of jointing (except welding) straight pipes to one another and to specials and valves. Special. NOTE: Under this definition are included all sizes of specials such as bends, tees, crosses, angle branches, reducers, and tapers. Straight pipe.

ABBREVIATIONS. specifications listed in 2.1.2(b)-(g) and the following abbreviations shall apply: AC : Asbestos cement CI : Cast iron CID : Constant internal diameter COD : Constant outside diameter IRHD : International rubber hardness degrees PTFE : Polytetrafluoro ethylene PVC : Po1yvinp.l chloride UPVC : Unplasticized polyvinyl chloride

MATER.LALS tiENERAL. Pipes and fittings shall be of the types specified in the schedule or in the project specification and, unless otherwise required in terms of the project specification, they and their couplings shall be capable of withstanding the applicable test pressure specified in 7.3.1. All pipes and fittings shall be supplied complete with couplings and jointing material. Satisfactory temporary end covers shall be provided for the protection of threads, flanges, and prepared ends of plain-ended pipes and fittings, and to prevent damage to internal lining during transportation and during handling 011 Site. Pipeline materials shall be so transported, stored, and handled that pipes are not overstressed at any time and fittinqs are not damaged in any way. All thin-walled, flexible, and soft-coated pipes shall be handled with particular care and shall be so stored that they are not subject to concentrated pressure from stones or other objects. Pipes damaged or cracked in any way shall be removed from the Site.

AC PIPES AND SPECIALS. AC pipes shall comply with the requirements of SABS 286 for COD pipes or SABS 946 for CID pipes. COD pipes shall be used for all sizes up to and including 200 mm diameter unless otherwise scheduled or stated in the project specification. required in terms of the project specification. (See 3.8.1 for jointing materials.) Specials for use with an AC pipeline, whether of AC, CI, or steel, shall be rated at not less than the pressure rating of the pipeline.

C1 PIPES, FITTINGS, AND SPECIALS. CI pipes and flanged fittings shall comply with the applicable requirements O C HS 2035. CI fittings and special fittings for use with AC pipes shall comply with the applicable requirements of SABS 546.

The recommendations of SABS 0102 have been incorporated into this specification in SC’

Where this specification is required for a project, the following specifi-

This specification contains clauses that are generally applicable to medium-pressure Interpretations and variations of this specification are set out in Portion 2 of the project

For the purposes of this specification the definitions given in the applicable of the

Any pipe other than a straight pipe.

A straight pipe of uniform bore and of standard or non-standard length.

For the purposes of this specifj.cation the abbreviations given in the applicable of the

A? pipes shall be bitumen-dipped if so

S A B S 1200 L-1383 Medium-pressure pipe1 i n e s

6

3.4 3 . 4 . 1

3 . 4 . 2

3 .4 .3

3 . 4 . 4

3.5

3.6

3.7 3 . 7 . 1

3 . 7 . 2

3 .8 3 . 8 . 1

3 . 8 . 2 3 . 8 . 2 . 1

3 .8 .2 .2

3 . 8 . 2 . 3

3 . 8 . 2 . 4

3 . 8 . 3

3 . 8 . 4

3 . 8 . 5

3.R.6

s m E L PIPES, FITTINGS, AND SPECIAIS General . The C o n t r a c t o r s h a l l , i f so i n s t r u c t e d , make a v a i l a b l e to t h e Etiyinrer t h e m . l k c r ' s c : e r t i f i . r a t r s covcr ing t h e chemical a n a l y s i s and p h y s i c a l p r o p e r t i e s o f t h e steel used i n t h e manufact-.ure of p i p e s and s p e c i a l s , and s h a l l p rovide w r i t t e n conf i rmat ion t h a t welding h a s been c a r r i e d o u t by coded welders . P ipes o f Nominal Bore up t o 150 mm. Unless o t h e r w i s e scheduled or r e q u i r e d i n terms of t h e p r o j e c t s p e c i f i c a t i o n , steel p i p e s and f i t t i n g s of nominal bore up t o 150 mm s h a l l be o f medium class, s h a l l b e screwed, and s h a l l comply w i t h t h e a p p l i c a b l e requi rements of SABS 62. Pipes of Womirial Bore over 150 mn. S t e e l p i p e s of nominal bore o v e r 150 mm s h a l l comply w i t h t h e a p p l i c a b l e requi rements o f SABS 719 a p p r o p r i a t e to t h e g r a d e o f p i p e scheduled or s p e c i f i e d i n t h e p r o j e c t s p e c i f i c a t i o n and, i n a d d i t i o n , a ) t h e minimum w a l l t h i c k n e s s s h a l l be 4 mm f o r p i p e s of nominal o u t s i d e diameter n o t exceeding 400 min. and 5 mm f o r p i p e s o f nominal o u t s i d e diamet-er exceeding 400 mm b u t n o t exceeding 500 mm: b) t h e p i p e s s h a l l be p l a i n ended and of one f i x e d l e n g t h between 3 ni and 18 m; and c) t h e h e i g h t o f i n n e r weld re inforcement and of u p s e t metal on t h e i n n e r s u r f a c e s h a l l n o t exceed 1 mm. F i t t i n g s and S p e c i a l s . S t e e l p i p e f i t t i n g s and s p e c i a l s of nominal b o r e l a r g e r than 150 mm s h a l l b e f a b r i c a t e d i n accordance w i t h BS 534 from p i p e complying wi th t h e requi rements g iven i n 3.4 .3 . I n a d d i t i o n , a l l p i p e s p e c i a l s and f i t t i n g s s h a l l b e f r e e of weld s p a t t e r and a l l s h a r p c o r n e r s and edges s h a l l be ground smooth and round b e f o r e p a i n t i n g . A l l shop weldiny of s l ip -on and o t h e r c o u p l i n g s f o r steel p i p e s and s p e c i a l s s h a l l b e c a r r i e d o u t by welders who are competent i n terms o f t h e procedure approval test o f AP1 1104, e x c e p t where t h e p r o j e c t s p e c i f i c a t i o n makes p r o v i s i o n f o r a n o t h e r competence test to b e agreed between t h e Engineer and t h e Cont rac tor .

-I.

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CONCRETE PRESSURE PIPES. Unless o t h e r w i s e scheduled , c o n c r e t e p r e s s u r e p i p e s s h a l l comply wi th t h e requi rements of SABS 676 a p p r o p r i a t e to t h e p r e s s u r e class s t a t e d i n t h e s c h e d u l e and s h a l l have s p i g o t and socket ends w i t h rubber r i n g j o i n t s or o t h e r approved f l e x i b l e j o i n t s .

PRESTRESSED CONCRETE PIPES. P r e s t r e s s e d c o n c r e t e p i p e s s h a l l comply wi th t h e requi rements of S A W 975 and t h e nominal i n t e r n a l d iameter , t h e nominal e f f e c t i v e l e n g t h , t h e h y d r a u l i c test p r e s s u r e , and t h e proof load s h a l l b e as s t a t e d i n t h e p r o j e c t s p e c i f i c a t i o n . The C o n t r a c t o r s h a l l supply t h e informat ion d e t a i l e d i n Appendix E: to SABS 975 when so r e q u e s t e d by t h e Engineer . Metal coupl ings o f a l l t y p e s and t h e means used f o r d i s t r i b u t i n g coupl ing stresses to t h e c o n c r e t e s h a l l be capable of withs tanding a l l stresses caused by p r o p e r t i g h t e n i n g o f t h e b o l t s w i t h o u t any s i g n of c r a c k i n g or o t h e r damage.

OTHER TYPES OF PTPES _____ uPVC Pipes. comply wi th t h e r e l e v a n t requi rements of SABS 966. Polye thylene P ipes . SABS 533.

JOINTING MATERIALS -- AC Pipes . with t h e r e l e v a n t requi rements o f BS 486. s h a l l b e j o i n t e d to v a l v e s w i t h s t a n d a r d C I s h o r t collar d e t a c h a b l e coupl inqs .

uPVC p i p e s and f i t t i n g s s h a l l b e f i t t e d wi th s p i g o t and socket rubber r i n g j o i n t s and s h a l l

Polye thylene p i p e s and f i t t i n g s ' sha l l comply wi th t h e r e l e v a n t requi rements of

AC p i p e s s h a l l b e j o i n t e d to each o t h e r by means of AC 3-r ing s leeve- type c o u p l i n g s complying Unless o t h e r w i s e scheduled or shown on t h e drawings, AC p i p e s

- - F l e x i b l e Couplings Except where s p e c i a l c o u p l i n g s are scheduled , f l e x i b l e c o u p l i n g s f o r plain-ended steel pipe s h a l l b e of -___

.~ _ _ t h e s l i p - o n type w i t h c e n t r e r e g i s t e r complying w i t h t h e r e l e v a n t requi rements o f B s 534. A coupl ing s h a l l b e a b l e to w i t h s t a n d w i t h o u t any s i g n o f f a i l u r e a h y d r o s t a t i c test p r e s s u r e of t w i c e t h e working p r e s s u r e s p e c i f i e d f o r t h e p i p e f o r which t h e coupl ing is r e q u i r e d . Coupling f l a n g e s s h a l l b e c a p a b l e of wi ths tanding w i t h o u t any s i g n of damage a l l stresses caused by proper t i g h t e n i n g o f t h e b o l t s . Rubber r i n g s s h a l l comply w i t h t h e r e l e v a n t requi rements of SABS 974 : P a r t I and s h a l l have a h a r d n e s s

F langes a n d c c e s s o r i e s _ . Each f langed p i p e and f i t t i n g s h a l l be s u p p l i e d complete w i t h one set of b o l t s and n u t s and one i n s e r t i o n p i e c e o f t h e a p p r o p r i a t e d iameter and made of a material t h a t is s u i t a b l e f o r t h e maximum tes t pressure . The d r i l l i n g o f steel and C I f l a n g e s s h a l l conform to t h e requi rements of S A R S 1123 or BS 4504 : P a r t 1, as a p p l i c a b l e , a p p r o p r i a t e t o t h e class of p i p e s p e c i f i e d , except t h a t a) i n t h e case o f f l a n y e s for hydrant and a i r v a l v e matching tees, t h e d r i l l i n g s h a l l conform to t h e d r i l l i n g of t h e v a l v e s u p p l i e d , and b ) i n t h e case of C 1 f l a n g e s , where M27 and M33 b o l t s are s p e c i f i e d i n BS 4504 : P a r t 1, M24 and M30 b o l t s r e s p e c t i v e l y s h a l l b e used as s p e c i f i e d i n SARS 1123. Loose Flanges. Loose f l a n g e s f o r welding o n t o steel p i p e s on S i t e s h a l l b e manufactured from t h e same steel as is s p e c i f i e d f o r t h e p i p e s and s h a l l be i n accordance wi th SABS 1123 (see also 3 . 4 . 3 ) . Any i t e m of pipework t h a t is found t o have f l a n g e s t h a t are i n c o r r e c t l y d r i l l e d w i l l b e r e j e c t e d . Reaming of b o l t h o l e s to o v e r s i z e dimensions i n o r d e r to make a p a r t . i c u l a r p i e c e f i t w i l l n o t be permi t ted . Bolts and n u t s s h a l l comply w i t h t h e r e l e v a n t requi rements of SABS 135 or SABS 136, a s s p e c i f i e d i n t h e p r o j e c t s p e c i f i c a t i o n . The l e n g t h of each b o l t s h a l l b e such t h a t , a f t e r t h e b o l t h a s been t i g h t e n e d , t h e end of t h e b o l t is f l u s h wi th t h e o u t s i d e of t h e n u t or p r o j e c t s above t h e n u t by n o t more t h a n t w o f u l l t h r e a d s . *got S p e c i a l s . Each s p i g o t e d s p e c i a l s h a l l be s u p p l i e d wi th one s l e e v e coupl ing (or such o t h e r tyj>e of coupl ing as is shown i n t h e drawings) to s u i t t h e p a r t i c u l a r p i p e wi th which t h e s p e c i a l is t o mate. The coupl ing s h a l l f i t t h e l a r g e r end of t h e b a r r e l i n t h e case of a reducer . S p i g o t and Socket Pipes . S p i g o t and socket p i p e s s h a l l be provided wi th rubber or neoprene s e a l i n g r i n g s f o r forming f l e x i b l e c o u p l i n g s or , where so r e q u i r e d i n terms o f t h e p r o j e c t s p e c i f i c a t i o n , c a u l k i n g materials s h a l l b e provided.

of 66-75 I R H D .

7 SABS 1200 L-1983 Medium-pressure p i p e l i n e s

3.8.7

3.9 3.9.1

3.9.2 3.9.2.1

3.9.2.2

3.9.2.3

3.9.3

3.9.4

3.9.5

3.9.6

3.10

Screw-Ended Pipes . Screw-ended p i p e s s h a l l comply w i t h t h e r e l e v a n t requi rements of SABS 110'9. Male ends s h a l l b e taper-screwed and female e n d s s h a l l have parallel threads .

CORIIOS ION FR(YPl?CTION CI Pipes . With t h e e x c e p t i o n o f f l a n g e f a c e s and e x t e r n a l s u r f a c e s t h a t are t o be set i n corlcrete and except where o t h e r w i s e r e q u i r e d i n terms of t h e p r o j e c t s p e c i f i c a t i o n , C I p i p e s , s p e c i a l s , and h y d r a n t s s h a l l be c leaned and t h e n c o a t e d e x t e r n a l l y and i n t e r n a l l y i n accordance w i t h US 4772. A f t e r it h a s set. t h e c o a t i n g s h a l l be such t h a t it w i l l n o t f low when h e a t e d to a t empera ture of 75 OC. S t e e l P i p e s S t e e l p i p e s o f nominal bore up t o 150 mm. Except where, because o f t h e s i z e or shape o f t h e i t e m s , d ipp ing is i m p r a c t i c a b l e , steel p i p e s and f i t t i n g s , i n c l u d i n g f l a n g e s and s p e c i a l s , o f nominal bore uj3 t o and i n c l u d i n c ~ 150 mm s h a l l have a c o a t i n g o f z i n c a p p l i e d i n t e r n a l l y and e x t e r n a l l y by t h e hot -d ip p r o c e s s and complying w i t h t h e r e l e v a n t requi rements of SABS 763, or t h e y s h a l l b e coa ted i n t e r n a l l y and c x t e r n a l l y wi th bitumen or o t h e r approved material s u i t a b l e f o r u s e i n domest ic water mains, as r e q u i r e d i n terms of t h e schedule . Items t h a t are n o t d ipped s h a l l b e shop pa in ted . S t e e l p i p e s of nominal bore o v e r 150 nun. S t e e l p i p e s , f i t t i n g s , f l a n g e s , and s p e c i a l s o f nominal bore over 150 mm s h a l l have t h e i r s u r f a c e s thoroughly c leaned by g r i t b l a s t i n g to a f i n i s h complying w i t h t h e requi rements of SIS 05 59 00 f o r an Sa 23 f i n i s h and s h a l l , w i t h i n 4 h a f t e r c l e a n i n g , b e primed wi th t h e pr imer s p e c i f i e d below or , i f no pr imer is s p e c i f i e d , w i t h a pr imer o f a n approved type , and provided wi th one of t h e fo l lowing forms o f p r o t e c t i o n , as scheduled or as r e q u i r e d i n terms of t h e p r o j e c t s p e c i f i c a t i o n : NOTE i) A s f a r as is p r a c t i c a b l e , t h e handl ing of c leaned articles a f t e r g r i t b l a s t i n g and b e f o r e any c o a t i n g is a p p l i e d , s h a l l he avoided. i i ) Materials of p i p e l i n i n g systems f o r p i p e s in tended t o convey p o t a b l e water s h a l l be non-toxic . a) Bitumen c o a t i n g and l i n i n g a p p l i e d by 1) i n t h e c a s e of t h e l i n i n g , s p i n n i n g t o a n average t h i c k n e s s of 3.0 mm (minimum t h i c k n e s s 2.5 mm) w i t h bitumen complying w i t h t h e requi rements o f SABS 1137; and 2) i n t h e case of t h e c o a t i n g , wrappinq w i t h a double l a y e r o f bitumen-impregnated g l a s s f i b r e complying wi th t h e requi rements f o r Type 1 of SABS 1130 t o form a c o a t i n g of average t h i c k n e s s 5 mm and o f minimum t h i c k n e s s 4.5 mm and, on complet ion of t h e c o a t i n g , w h i t e washing of t h e shea th ing . b) Coat ing and l i n i n q u s i n q , s u b j e c t to approval , one o f t h e fo l lowing epoxy systems: 1) The a p p l i c a t i o n of a n epoxy pr imer , fol lowed by one or more coats of high-bui ld epoxy material to g i v e a total d r y f i l m t h i c k n e s s of a t least 250 pm, each coat having a c o l o u r d i f f e r e n t from t h a t of i ts predecessor and a p p l i e d n o t less t h a n 6 h and n o t more t h a n 24 h a f t e r it, care be ing t a k e n to ensure t h a t t h e prev ious coat h a s d r i e d s u f f i c i e n t l y to prevent s o l v e n t entrapment . 2) A polyamide-cured epoxy system c o n s i s t i n g o f a t least t h r e e coats to g i v e a total d r y f i l m t h i c k n e s s o f a t least 250 pm, w i t h o u t h o l i d a y s , t h e f i r s t c o a t ' b e i n g a p p l i e d as a pr imer immediately a f t e r grit b l a s t i n g arid subsequent coats n o t less t h a n 6 h and n o t more t h a n 24 h a f t e r t h e p r e v i o u s coat, care be ing t a k e n to e n s u r e t h a t t h e p r e v i o u s coat h a s d r i e d s u f f i c i e n t l y t o p r e v e n t s o l v e n t entrapment . 3) A s o l v e n t - f r e e h o t coat epoxy w i t h a d r y f i l m t h i c k n e s s of a t least 250 pm, and w i t h o u t h o l i d a y s . 4) A powder ( s i n t e r e d ) epoxy c o a t i n g w i t h a d r y f i l m t h i c k n e s s of a t l eas t 250 urn, and w i t h o u t ho l idays . c) Concre te l i n i n g or c o a t i n g , or both , complying w i t h t h e a p p l i c a b l e requi rements o f t h e p r o j e c t s p e c i f i c a t i o n . Repai rs t o epoxy c o a t i n g s . When an epoxy c o a t i n g is t e s t e d i n accordance w i t h 7 .4 (a ) - (c ) and i n accordance wi th any o t h e r test c a r r i e d out i n terms of 7 .4 (d ) , a) any area i n which p i n h o l e s or h o l i d a y s are d e t e c t e d s h a l l , i n t h e case of l a r g e d i a m e t e r p i p e s , be thoroughly abraded w i t h waterproof paper , moistened wi th a n approved s o l v e n t , wiped c l e a n , and recoa ted t o t h e s a t i s f a c t i o n o f tlio Engineer and, i n t h e case of p i p e s o f d iameter too s m a l l f o r such r e p a i r s t o b e c a r r i e d o u t , r e p a i r s s h a l l b e e f f e c t e d by o v e r c o a t i n g w i t h a n o t h e r coat o f epoxy; b ) any c o a t i n g t h e t h i c k n e s s of which d o e s n o t comply w i t h t h e a p p l i c a b l e requi rements o f 3.9.2.2Cb) b u t which i s o t h e r w i s e sound, s h a l l have one or more a d d i t i o n a l coats a p p l i e d ; c) any c o a t i n g t h a t e x h i b i t s inadequate c u r i n g s h a l l , if p r a c t i c a b l e , b e p r o p e r l y cured or t h e c o a t i n g s h a l l be removed and a new c o a t i n g a p p l i e d , as ordered by t h e Engineer ; d ) any c o a t i n g found to be d e f e c t i v e i n t e r m s o f t h e r e s u l t s of a test or tests c a r r i e d o u t i n accordance wi th 7.4(d) s h a l l b e r e p i i r e d or t h e c o a t i n g s h a l l be t r e a t e d as i n (a) above, as o r d e r e d by t h e Engineer. P r o t e c t i o n a g a i n s t E l e c t r o l y t i c Corrosion. c o n s i s t i n g o f an ex t ruded s h e a t h of poly!vinyl c h l o r i d e or polye thylene , an impervious adhes ive p l a s t i c s t a p e or petroleum-base impregnated t a p e , or o t h e r approved i n s u l a t i n g mater ia l , s h a l l be a p p l i e d i n a d d i t i o n to , or i n s t e a d o f . any of t h e p r o t e c t i v e c o a t i n g s s p e c i f i e d i n 3.9.1 and 3.9.2, as and where r e q u i r e d i n terms o f t h e p r o j e c t s p e c i f i c a t i o n . F l e x i b l e coupling^.. s p e c i f i e d i n 3.9.2.2(b) ( 1 ) . J o i n t s , Dolts, Nuts , and Washers. washers s h a l l be hot -d ip bitumen coa ted . Corros ive S o i l . Where scheduled or o r d e r e d , steel or cast i r o n f i t t i n g s and j o i n t s t h a t are t o b e s u b j e c t e d to c o r r o s i v e so i l c o n d i t i o n s s h a l l b e t r e a t e d w i t h a compat ib le primer, packed w i t h a bitumen-based or ta r -based mastic, and wrapped wi th an approved p l a s t i c s t a p e , or p r o t e c t e d wi th c,tiit.r scheduled or approved materials.

VALVES.

_________

______ __ -

_______-__

-

Externa l p r o t e c t i o n a g a i n s t e l e c t r o l y t i c c o r r o s i o n ,

F l e x i b l e coupl ings f o r steel p i p e s s h a l l b e thoroughly c leaned and t h e n p a i n t e d as

Where no o t h e r p r o t e c t i o n i s , s p e c i f i e d , j o i n t s , b o l t s , n u t s , and

Unless o t h e r w i s e s t a t e d i n t h e project s p e c i f i c a t i o n , v a l v e s s h a l l comply wi th t h e requiremerlts of SABS 1200 LK.

S A t E 1200 L-19f1.3 Medium-prcssure pi.pe1 i n e s

B

3 .11 3.11.1

3.11 .2

3.1.1.3

3.11.4

3.11.. 5 3 .11 .5 .1

3 .11 .5 .2

3.11.6

4. 4.1

4.2

4.3

5 . 5 . 1 5 . 1 . 1

5.1.2

5 .1 .3

5 .1 .4 5 .1 .4 .1

5 .1 .4 .2

MANHUI.I?S AtJD SURFACE DOXKS Bricks. B r i c k s s h a l l be o b t a i n e d from an approved manufac turer and s h a l l be e i t h e r yencra l purpose ( s p e c i a l ) , b u r n t c l a y , or e n g i n e e r i n g b r i c k s t h a t comply wi th t h e a p p l i c a b l e requi rements o f S A R S 22'7. or C l a s s S 1 4 ca lc ium s i l i ca t e b r i c k s t h a t comply wi th t h e a p p l i c a b l e requi rements o f S A R S 285. The Cont . ractor s h a l l submit to t h e Engineer samples of t h e b r i c k s t h a t h e i n t e n d s u s i n q i n t h e c o n s t r u c t i o n o f t h e Works (see Subclause 3 . 1 of SADS 1200 A or SABS 1200 A A , a s a p p l i c a b l e ) . The samplrs of b r i c k s t h a t are approved w i l l b e r e t a i n e d by t l ie Engineer . P r e c a s t Cyl inders . P r e c a s t c y l i n d e r s may b e of spun c o n c r e t e , a s b e s t o s cement, g l a s s r e i n f o r c e d p o l y e s t e r , or PVC, except where p a r t i c u l a r materials are r e q u i r e d i n t e r m s o f t h e schedule or t h e pro . jec t s p e c i f i c a t i o n . P r e c a s t c o n c r e t e c y l i n d e r s s h a l l comply wi th t h e a p p l i c a b l e requi rements o f S A R S 1294 . S e c t i o n a l spun c o n c r e t e c y l i n d e r s s h a l l comply w i t h tlir reqriirnment:~ f o r p i p e s of SC L y p ~ , C l a s s A , o f SABS 677. J o i n t i n y between c y l i i i d e r s s h a l l b e o f t h e i n t e r l o c k i n g sel f - c e n t r i n g t y p e s u i t a b l e f o r s e a l i n g . ___.___ Concrete . SABS 1200 GA, as a p p l i c a b l e . S t e p I r o n s . Step i r o n s s h a l l be of malleable cast i r o n complying wi th t h e a p p l i c n h l e requi rements of RS 1247 and of l e n g t h s u i t a b l e f o r f i x i n g i n b r i c k , i n - s i t u c o n c r e t e , or p r e c a s t c o n c r e t e , a s a p p l i c a h l ~ .

Except as r e q u i r e d i n 3.11 .2 , c o n c r e t e s h a l l comply wi th t h e requi rements of SABS 1200 C; or

.. Manhole Covers and Frames Unless o therwise r e q u i r e d i n terms of t h e project s p e c i f i c a t i o n , c o v e r s and frames f o r manholes s h a l l comply wi th t h e requi rements o f SABS 558 for Type 26 i n t h e case of manholes i n roads and o t h e r areas s u b j e c t to road t r a f f i c l o a d s , and Type 4 i n t h e case of manholes i n a r e a s n o t s u b j e c t to such l o a d s . Covers and frames f o r manholes s h a l l be s u p p l i e d i n matching sets. The cover and frame of each set s h a l l each bear a serial number ( a p p l i e d by means of an o i l p a i n t ) t o e n a b l e t h e sets t o b e i d e n t i f i e d . The C o n t r a c t o r s h a l l ensure t h a t , when i n s t a l l e d , t h e covers and frames still comply w i t h t h e requi rements of SARS 558 f o r freedom from warp and evenness of s e a t i n g . S u r f a c e Boxes-. i n t e r n a l dimensjons g iven i n SABS 558, of materials t h a t comply w i t h t h e a p p l i c a b l e requi rements of 3.11.2. C a s t i r o n boxes s h a l l comply w i t h t h e requi rements of SABS 558 f o r Type 3A i n t h e case of s u r f a c e boxes f o r g a t e and s c o u r v a l v e s , and f o r Type 5 i n t h e case of s u r f a c e boxes f o r h y d r a n t s arid a i r va lves . A l l C I s u r f a c e boxes s h a l l have been h o t d ipped i n a n a c c e p t a b l e bi tuminous compound b e f o r e despa tch from t h e manufac turer ' s w o r k s .

PLANT HANDLING AND R I G G I N G . p l a c i n g of p i p e s s h a l l be such that . no p i p e s h e l l i s o v e r - s t r e s s e d d u r i n g any o p e r a t i o n covered by t h e s p e c i f i c a t i o n .

SETTING OUT. The C o n t r a c t o r may u s e any a c c e p t a b l e d e v i c e , i n c l u d i n g one i n c o r p o r a t i n g a laser beam, to c o n t r o l t h e al ignment and l a y i n g of t h e p i p e l i n e .

TESTING. The C o n t r a c t o r s h a l l p rovide a l l t h e equipment, m a t e r i a l s , t o o l s , and f i t t i n g s r e q u i r e d for t h e performance of t h e tests g iven i n Clause 7.

CONSTRUCTION LAYING General . A p i p e l i n e s h a l l b e l a i d and hedded (see SABS 1200 LR) t o even g r a d e s and t o t h e l e v e l s atid a l ignments shown on t h e drawings or as d i r e c t e d . It s h a l l be l a i d c e n t r a l l y i n t h e t r e n c h i n such a manner t h a t t h e s i d e a l lowance conforms t o t h e a p p l i c a b l e v a l u e s p e c i f i e d i n Clause R of SARS 1200 DB. For ease of i n s p e c t i o n and t e s t i n g t h e p i p e s s h a l l b e l a i d w i t h t h e manufac turer ' s class and q u a l i t y i d e n t i f i c a t i o n m a r k s v i s i b l e from t h e t o p of t h e t r e n c h , u n l e s s , i n t h e c a s e of l a r g e p i p e s , t h e p o s i t i o n of l i f t i n g e y e s r e n d e r s t h i s imprac t icable . Control of l a y i n g and bedding s h a l l b e by means of boning r o d s and s i g h t r a i l s or an a c c e p t a b l e laser beam device. S i g h t r a i l s s h a l l be p a i n t e d b lack and whi te and s h a l l be f i x e d s e c u r e l y and a c c u r a t e l y . Damage. Each p i p e and each f i t t i n g s h a l l be thoroughly c leaned and c a r e f u l l y examined f o r damage and d e f e c t s immediately b e f o r e l a y i n g . Should any damaged or d e f e c t i v e p i p e or f i t t i n g b e l a i d , it s h a l l be removed and r e p l a c e d a t t h e C o n t r a c t o r ' s expense and t o t h e s a t i s f a c t i o n o f t h e Engineer . ___- Keepiny P i p e l i n e s Clean. m a t t e r and water i n t o t h e p i p e ( s ) . f o r a s i g n i f i c a n t p e r i o d , t h e l a s t l a i d s e c t i o n of each p i p e s h a l l b e plugged, capped, or o t h e r w i s e t i g h t l y c losed u n t i l l a y i n g is recommenced. During l a y i n g and j o i n t i n g o f p i p e s and u n t i l t h e p i p e l i n e ( s 1 has/have passed t h e r e q u i r e d acceptance t es t s and t h e t r e n c h e s have been b a c k f i l l e d , a l l t r e n c h e s s h a l l be k e p t i n a state which, i n t h e o p i n i o n of t h e Engineer , is reasonably dry .

S u r f a c e boxes may he of C I or , provided t h a t t h e y conform to t h e r e l e v a n t shapes and

The p l a n t and r i g g i n g equipment used by t h e C o n t r a c t o r f o r t h e handl ing and

Every r e a s o n a b l e p r e c a u t i o n s h a l l h e taken t o p r e v e n t t h e e n t r y of fore i .qn A t t h e close of each d a y ' s work or a t any time when w o r k is suspended

Depths and Cover Unless o therwise shown on t h e drawings or r e q u i r e d i n terms o f t h e p r o j e c t s p e c i f i c a t i o n , or o r d e r e d , t h e depth of excavat ioi i f o r t r e n c h e s f o r medium-pressure p i p e l i n e s s h a l l n o t exceed 1.5 m. P ipes s h a l l b e l a i d to even grades wi th t h e s p e c i f i e d cover . Where so r e q u i r e d , t h e cover may be increased g r a d u a l l y by d e f l e c t i o n a t p i p e j o i n t s , b u t t h e d e f l e c t i o n s h a l l n o t b e g r e a t e r (and should g e n e r a l l y b e less) than t h e d e f l e c t i o n recommended by t h e manufacturer o f t h e p i p e (e .g . t h e d e f l e c t i o n s h a l l n o t exceed 1 ,s p e r j o i n t i n t h e case of AC p i p e s ) .

9 SARS 1200 1 ~ 1 9 8 3 Medium-isressure p i p e l i n e s

5.1.4.3

5.1.4.4

5.1.4.5

5.2 5.2.1

5.2.2

5.2.3

5.2.4

5.3

5.4

Tlie minimnm c l e a r a n c e bctwcwn t h e o u t s i d e of a p i p e l i n e he inq l a i d and t h e out-s ide of any othcr 4 > 1 i v L l i a t it crosses s h a l l b e 150 nim. Where t h i s requirement c o n f l i c t s wi th t h e requi rements f o r c o v e r over t h e p i p e l i n e t h e C o n t r a c t o r s h a l l ask t h e Engineer f o r w r i t t e n i n s t r u c t i o n s and s h a l l c a r r y o u t t h e w o r k i n accordance wi th t h o s e i n s t r u c t i o n s . Unless o t h e r w i s e s p e c i f i e d i n t h e p r o j e c t s p e c i f i c a t i o n , a p i p e l i n e feeding a f i r e hydrant s h a l l be l a i d a t a l e v e l t h a t e n s u r e s t h a t t h e t o p o f t h e threaded o u t l e t is n o t more t h a n 400 mm below t h e l e v e l a t which t h e t o p of t h e h y d r a n t c o v e r is CO b e set. A double-f langed d i s t a n c e p i e c e s h a l l b e used when n e c e s s a r y t o e n s u r e compliance wi th 5.1.4.4 (see Drawings 1.-2 and L-3) or wi th any depth requirement g i v e n on t h e drawings f o r a n a i r va lve .

JOINTLNG METllODS Detachable Couplings (AC and UPVC Pipe l ines) . . Each end o f AC and uPVC p i p e s s h a l l b e thoroughly c leaned by brushing and wiping immediately b e f o r e be ing j o i n t e d . i n s p e c t e d a f t e r be ing p l a c e d i n p o s i t i o n and b e f o r e t h e j o i n t is c l o s e d , t o e n s u r e t h a t t h e y have n o t s u f f e r e d any c u t s , tears, or o t h e r damage, and are n o t i n any o t h e r way d e f e c t i v e . Only t h e l u b r i c a n t recommended by t h e manufac turer s h a l l b e used f o r s leeve- type c o u p l i n g s and rubber i n s e r t i o n r i n g s o f AC pipes . Polyure thane j o i n t s f o r uPVC p i p e s s h a l l b e l u b r i c a t e d w i t h s o f t soap or s imi l a r material approved by t h e manufacturer . Grease d e r i v e d f r o m pe t ro leum p r o d u c t s s h a l l n o t b e used i n uPVC p i p e j o i n t s . An AC p i p e l i n e s h a l l b e j o i n t e d i n accordance w i t h t h e manufac turer ' s i n s t r u c t i o n s . j o i n t s i n such p i p e l i n e s w i t h C I d e t a c h a b l e c o u p l i n g s s h a l l have a gap, after l a y i n g and j o i n t i n g , of approximately 1 0 mm between t h e ends o f t h e p i p e s and c e n t r a l to t h e collar, to allow f o r expansion when t h e p i p e s are f i l l e d and have absorbed moisture. F langes ( S t e e l P i p e l i n e s ) . I n t h e j o i n t i n g o f steel p i p e s wi th f l a n g e s , s p e c i a l care s h a l l he taken t o a l i g n , g r a d e , and l e v e l t h e p i p e s , s p e c i a l s , and v a l v e s t o avoid s t r a i n i n g o f t h e f langes . A l l bitumen and p a i n t s h a l l h e removed from t h e mating f a c e o f each f l a n g e immediately b e f o r e j o i n t i n y . p i e c e s t h a t comply w i t h t h e a p p l i c a b l e requi rements of 3 . 8 . 3 and t h a t have a c c u r a t e l y c u t h o l e s f o r b o l t s s h a l l b e p laced to form a cont inuous one-piece r i n g between t h e f l a n g e s . B o l t s s h a l l b e t i g h t e n e d up evenly i n o p p o s i t e p a i r s to e n s u r e uniform b e a r i n g on t h e i n s e r t i o n . Care s h a l l b e taken t o avoid damage to t h e i n t e r n a l s u r f a c e o f t h e p i p e s d u r i n g assembly o f t h e p i p e l i n e . Wherever loose f l a n g e s are welded o n t o p i p e l i n e s , t h e C o n t r a c t o r s h a l l e n s u r e t h a t t h e i n n e r l i n i n g is r e s t o r e d to t h e t h i c k n e s s s p e c i f i e d f o r such l i n i n g and t h a t t h e new l i n i n g is soundly j o i n t e d to t h e e x i s t i n g l i n i n g . Welding ( S t e e l P i p e l i n e s o f Diameter 600 mm or g r e a t e r ) . 600 mm or g r e a t e r s h a l l comply wi th t h e r e l e v a n t requi rements o f API 1104 and s h a l l b e c a r r i e d o u t by welders who are competent i n terms o f t h e procedure approval test g iven i n API 1104. P i p e l i n e s of d i a m e t e r less than 600 mm s h a l l n o t b e welded i n t h e f i e l d . The p i p e t r e n c h f o r welded steel p i p e l i n e s may b e b a c k f i l l e d a f t e r , when r e l e v a n t , complet ion of r a d i o g r a p h i c examinat ion (see 7.2.1 and 7.2.2). Concre te S p i g o t and Socket P i p e l i n e s . a c o n c r e t e s p i g o t and socket p i p e l i n e , t h e g a s k e t s s h a l l b e i n s t a l l e d f r e e from l o o p s and t w i s t s and s h a l l be evenly compressed around t h e j o i n t per imeter . p o s i t i o n and t h e C o n t r a c t o r s h a l l u s e f e e l e r gauges i n s e r t e d i n t o t h e s o c k e t to check t h e p o s i t i o n i n g of t h e g a s k e t a f t e r complet ion of each j o i n t . S u b j e c t t o t h e p r o v i s i o n of a gap between p i p e ends as recommended by t h e p i p e manufac turer , p i p e s s h a l l b e pushed f u l l y home a t j o i n t s . P a r t i c u l a r a t t e n t i o n shall b e p a i d to o b t a i n i n g a smooth cont inuous bore throughout t h e p i p e l i n e , w i t h o u t s t e p s between a d j a c e n t p i p e s .

SETTING OF VALVES, SPECIALS, AND FITTINGS. f ln less o t h e r w i s e s p e c i f i e d or d i r e c t e d , g a t e v a l v e s s h a l l be set u p r i g h t and b u t t e r f l y v a l v e s s h a l l b e set w i t h t h e main s h a f t s h o r i z o n t a l . A l l v a l v e s , s p e c i a l s , and f i t t i n g s s h a l l be c o r r e c t l y set, suppor ted , and p l a c e d i n p o s i t i o n as t h e work proceeds , and s h a l l be p r o p e r l y j o i n t e d t o t h e i r r e s p e c t i v e p i p e s . I n urban, i n d u s t r i a l , and similar a r e a s v a l v e s , s p e c i a l s , and f i t t i n g s s h a l l b e l o c a t e d i n t h e p o s i t i o n s shown on t h e drawings or as o t h e r w i s e d i r e c t e d (and n o t merely to s u i t s t a n d a r d l e n g t h s of p i p e ) b u t i n open count ry areas t h e y may b e l o c a t e d to s u i t t h e p i p e l e n g t h s . A f t e r c u t t i n g an AC p i p e to s u i t t h e p o s i t i o n of a v a l v e , s p e c i a l , or f i t t i n g , t h e C o n t r a c t o r s h a l l , by means of an approved f i e l d - t u r n i n g machine, t u r n t h e c u t ends to s u i t t h e coupl ing s l e e v e . ends o f an AC p i p e w i l l n o t be permi t ted .

CONCRETE CASING. Where t h e Engineer r e q u i r e s p i p e s t o be encased, a s t r e n g t h 15 MPa/37,5 mm, or such o t h e r s t r e n g t h as is scheduled. s h a l l be used. N o part of t h e c o n c r e t e c a s i n g s h a l l h e closer t h a n 150 mm to any f l e x i b l e j o i n t of a concrete-encased pipeline. The p i p e t r e n c h f o r a concrete-encased p i p e l i n e s h a l l b e excavated to t h e depth below t h e bottom s u r f a c e o f t h e p i p e , as or i lered or shown on t h e drawings, and to s u f f i c i e n t wid th t o allow f o r t h e c o n c r e t e t o be p l a c e d t o t h e f u l l s p e c i f i e d width. The bottom of t h e t r e n c h s h a l l be trimmed t r u e to l i n e and qrade. A l i g h t c o n c r e t e s c r e e d s h a l l b e p laced on t h e bottom o f t h e t r e n c h , concrete s a d d l e s or pads of t h e r e q u i s i t e t h i c k n e s s spaced s u i t a b l y , and t h e pipel i .ne l a i d on them t r u e t o l i n e and grade. A f t e r be ing j o i n t e d t h e p i p e s s h a l l b e t e s t e d i n accordance w i t h t h e a p p l i c a b l e tests given i n Clause 7, care be ing taken to e n s u r e t h a t t h e p i p e s d o n o t move d u r i n g t e s t i n g . A f t e r t h e p i p e l i n e h a s been t e s t e d , s u i t a b l e f o r m w o r k s h a l l b e e r e c t e d and c o n c r e t e c a r e f u l l y p laced and v i b r a t e d i n p o s i t i o n undernea th t h e p i p e and up b o t h s i d e s . The c o n c r e t e l e v e l s h a l l b e r a i s e d e q u a l l y on b o t h s i d e s of t h e p i p e u n t i l encasement is complete and a cover o v e r t h e s u r f a c e o f t h e p i p e is provided t h a t is nowhere less t h a n t h a t ordered or shown on t h e drawings. N o e a r t h f i l l i n q over t h e c o n c r e t e s h a l l b e commenced u n t i l a t least 7 d a f t e r t h e c o n c r e t e h a s been p laced or u n t i l t h e c o n c r e t e h a s a t t a i n e d a s t r e n g t h of a t least 1 0 MPa.

A l l rubber r i n g s and seals s h a l l b e c a r e f u l l y

A UPVC p i p e l i n e s h a l l be j o i n t e d i n accordance w i t h t h e manufac turer ' s i n s t r u c t i o n s . I n p a r t i c u l a r ,

I n s e r t i o n

F i e l d welding o f steel p i p e l i n e s o f d iameter -

Where rubber j o i n t s e a l i n g g a s k e t s a r e used i n f l e x i b l e j o i n t s of

The g a s k e t s s h a l l b e p laced i n t h e i r designed

(See also Clause 6.)

F i l i n g o f t h e

SABS 1200 L-1983 Medium-pressure p i p e l i n e s

10

5.5

5.6 5.6.1

5.6.2

5 . 7 5.7.1

5.7.2

5.8

5.9

5.10

ANCHOH/TIIRUST 131,OCKS AND PEDESTAIS. A t tees, bends, termirial v a l v e s , end caps , arid where t , therwise d i r e c t e d , a n c h o r / t h r u s t b l o c k s s h a l l be c o n s t r u c t e d to dimensions o r d e r e d or shown on t h e drawings. Unless o t h e r w i s e s p e c i f i e d , a n c h o r / t h r u s t b l o c k s and p e d e s t a l s s h a l l b e c o n s t r u c t e d o f s t r e n g t h 15 MPa/37,5 mm coricrcte or such o t h e r s t r e n g t h as is scheduled. The c o n c r e t e s h a l l he w e l l punned round t h e p i p e arid, i f i n t r e n c h e s , a g a i n s t t h e u n d i s t u r b e d f a c e s and bottom of t h e t r e n c h . H a c k f i l l i n g behind or under t h r u s t f a c e s w i l l n o t be permi t ted . Excess excavat ion s h a l l be r e p l a c e d w i t h t h e p r e s c r i b e d mix c o n c r e t e g i v e n above f o r a n c h o r / t h r u s t b l o c k s a t t h e C o n t r a c t o r ' s expense u n l e s s a n i t e m is scheduled t o cover payment f o r overbreak. Care s h a l l b e t a k e n to l e a v e tile j o i n t s a c c e s s i b l e . N o a n c h o r / t h r u s t b l o c k s and p e d e s t a l s shall b e concreted u n t i l l.he approval of t h e Engi.neer h a s been obta ined .

VALVE AND HYDI<ANT C1lAMHE;RS General . On r e t i c u l a t i o n p i p e l i n e s o f nominal d iameter 200 mm or less, each v a l v e s h a l l be housed i n a chamber as d e t a i l e d on Drawing 1,-1. On p i p e l i n e s o f nominal d iameter up to and i n c l u d i n g 275 mm, u n l e s s o therwise shown on t h e drawings or scheduled as manholes, chambers s h a l l b e c o n s t r u c t e d around a l l g a t e and scour v a l v e s , hydrants , and a i r v a l v e s a s s p e c i f i e d i n 5.6.2. Cons t ruc t ion o f Chambers. A f t e r a l l items have been t e s t e d i n accordance w i t h t h e a p p l i c a b l e o f t h e tests g iven i n Clause 7 and found a c c e p t a b l e , e x c a v a t i o n s s h a l l b e b a c k f i l l e d to t h e l e v e l o f t h e t o p of t h e p i p e wi th material s e l e c t e d and compacted as s p e c i f i e d i n SABS 1200 LB. From t h i s l e v e l br ickwork or p r e c a s t u n i t s , as approved, f o r each chamber as d e t a i l e d on Drawings L - 1 , L-2, and L - 3 , and as s p e c i f i e d i n 5.8, s h a l l b e c o n s t r u c t e d to a h e i g h t such t h a t t h e t o p of t h e v a l v e or h y d r a n t s u r f a c e box is a t t h e l e v e l o f t h e s idewalk or street, or a t a h e i g h t 50 nun above ground l e v e l i n t h e c a s e of unsur faced areas. The uppcr dimensions of t h e s t r u c t u r e s h a l l be such as t o f i t t h e base o f t h e box. The s u r f a c e box s h a l l be yrouted t o t h e t o p of t h e s t r u c t u r e and then t h e excavat ion s h a l l b e b a c k f i l l e d around t h e s t r u c t u r e and t h e s u r f a c e box. The b a c k f i l l s h a l l be w e l l compacted to t h e l e v e l of t h e t o p o f t.he box, which s h a l l be he ld f i r m l y i n p o s i t i o n by t h e f i l l .

MANHOI,ES General . Each v a l v e of d i a m e t e r 300 mm and more s h a l l be housed i n a manhole c o n s t r u c t e d i n accordance wi th t h e d e t a i l s shown on t h e a p p l i c a b l e drawings , and i n accordance w i t h 5.8 or as o t h e r w i s e s p e c i f i e d i n t h e p r o j e c t s p e c i f i c a t i o n . P r e c a s t Manholes. P r e c a s t manholes s h a l l b e c o n s t r u c t e d i n accordance w i t h t h e a p p l i c a b l e d e t a i l s shown on t h e drawings.

BRICKWORK IN CHAMBERS AND MANHOLES. Each chamber and manhole s h a l l b e b u i l t t o t h e d e t a i l s shown on a p a r t i c u l a r drawiriq or a s shown on t h e a p p l i c a b l e t y p e drawing. The wa l l s s h a l l b e c o n s t r u c t e d i n a n approved bond compris ing header and s t r e t c h e r c o u r s e s wi th t h e f a i r face on t h e i n s i d e . N o f a l s e h e a d e r s s h a l l be b u i l t i n and o n l y whole b r i c k s s h a l l b e used except where c l o s u r e s are r e q u i r e d to form bond. The b r i c k s s h a l l b e w e l l soaked i n water immedia te ly 'before he ing l a i d and t h e c o u r s e of b r i c k s last. l a i d s h a l l b e w e l l wet ted b e f o r e f r e s h b r i c k s are la id upon it. A l l walls s h a l l b e c a r r i e d up r e g u l a r l y so t h a t no p a r t of t h e w a l l i n g is more t h a n 1.3 m h i g h e r t h a n any a d j o i n i n g w a l l . J o i n t s s h a l l b e f l u s h e d up s o l i d a t e v e r y c o u r s e throughout t h e whole wid th o f each course , which s h a l l b e l a i d on a s o l i d bed of mortar o f t h i c k n e s s n o t exceeding 10 mm, arid, when a p p l i c a b l e , t h e j o i n t s s h a l l b e raked o u t as t h e work proceeds to form a key for p l a s t e r . Mortar f o r brickwork and p las te rwork s h a l l b e composed of one p a r t o f cement to t h r e e p a r t s of sand. Sand s h a l l be c l e a n p i t sand f r e e trom c l a y and o t h e r i m p u r i t i e s and, i f so d i r e c t e d , s h a l l b e p r o p e r l y screened and washed. I f r e q u i r e d , s t e p i r o n s f o r a manhole s h a l l b e b u i l t i n t o t h e s t r a i g h t o f t h e wal l a t 300 mm i n t e r v a l s s t a g g e r e d r i g h t and l e f t i n v e r t i c a l r o w s . C I f i t t i n g s s h a l l be bi tumen p a i n t e d . Each C I cover and frame s h a l l b e grouted s o l i d l y o n t o t l i e s h a f t . Concrete sur rounds o f each manhole s h a l l be f i n i s h e d o f f t o su i l : sur rounding s u r f a c e s .

LIFT'ING AND RELAYlNG OF EXISTING PIPES. Where shown on t h e drawings and where scheduled , e x i s t i n g p i p e s and f i t t i n g s t h a t are to b e removed s h a l l b e l i f t e d and t h e materials recovered as f a r as is p r a c t i c a b l e . The p i p e s and c o u p l i n g s s h a l l be removed from t h e t r e n c h and p laced i n t h e C o n t r a c t o r ' s s i te store where t h e y s h a l l be c leaned , s o r t e d , and l i s t e d . A copy o f t h e l ist of undamaged material recovered s h a l l b e handed to t h e Engineer . To avoid damaging tlie p i p e s , t h e C o n t r a c t o r s h a l l e x e r c i s e p a r t i c u l a r care i n e x c a v a t i n q AC p i p e l i n e s . Unless , i n t e r m s of t h e c o n t r a c t , o t h e r p i p e s are t o b e l a i d i n t h e same t r e n c h , each t r e n c h s h a l l be b a c k f i l l e d as s p e c i f i e d i n SABS 1200 DB. Where recovered p i p e s are scheduled t o be r e l a i d , rubber r i n g s , i n s e r t i o n packings. damaged joints, and r u s t e d b o l t s s h a l l be rep laced . Before t h e y are r e l a i d , an a c c e p t a b l e number of t h e p i p e s s h a l l b e t e s t e d f o r compliance wi th t h e requi rements of t h e a p p l i c a b l e s p e c i f i c a t i o n f o r r e s i s t a n c e t o hydra i i l i c p r e s s u r e .

DISINFECTION OF PO'I'AHLB WATER PIPELINES. On complet ion of t h e l a y i n g and t e s t i n g , each p o t a b l e water p i p e l i n e s h a l l be d i s i n f e c t e d as fo l lows: a ) The p i p e l i n e s h a l l b e f l u s h e d o u t w i t h c l e a n water u n t i l a l l sediment and o t h e r f o r e i g n matter have been removed. b ) The p i p e l i n e s h a l l then b e f i l l e d w i t h water c o n t a i n i n g 0,15 g/e of ca lc ium h y p o c h l o r i t e . The s o l u t i o n s h a l l b e al lowed to flow s l o w l y i n t o t h e p i p e l i n e u n t i l it f i l l s t h e whole p i p e l i n e and s h a l l b e l e f t t h e r e f o r a t l e a s t 24 h. c) The p i p e l i n e s h a l l then b e thoroughly and r e p e a t e d l y f l u s h e d wi th c l e a n water u n t i l a sample o f t h e wasbwater drawn f r o m t h e p i p e l i n e complies with t h e requi rements f o r p o t a b l e water of t h e local a u t h o r i t y or o f t h e a u t h o r i t y supply ing such water t o t h e area.

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11 S A W 1200 L-1983 Medium-pressure pipe1 ines

6. 6.1

6.2

6.3

6.4

7. 7.1

7.2 7.2.1

7.2.2

7.3 7.3.1 7.3.1.1

7.3.1.2

7.3.1.3

TOLERANCES GENERAL. No deviation will be permitted from the minimum cover specified or shown on the drawings.

CONTROL POINTS. For the purposes of Lhis clause valves set on the centre line of the pipeline and designated changes in gradient shall be regarded as control points and shall be located with a permissible vertical deviation of 2 100 mm on the centre line. The same deviation will be permissible laterally except where the Contractor is required to lay the pipeline at a designated distance from a fence line, kerb line, or boundary, in wtiich case thp permissible deviation shall be 20 mm. Unless otherwise directed and subject to a permissible deviation (measured along the centre line) of + 4 m, scour valves shall be located at the lowest pints in pipelines and air valves at the highest points.

ALIGNMENT (PLAN AND LEVEL). Unless otherwise directed, the permissible deviation in alignment between control points (see 6.2) from a straight line joining the control points, when measured on thp top centre of the pipeline, shall be + 100 mm or 5 20 4: of the nominal diameter of the pipe, whichever 1s the larger, and the permissible deviation per pipe length shall be 2 20 mm. The permissible deviation from the designated level at any point on the invert of the pipeline shall be + 50 mm or 1 1 0 4: of the nominal diameter of the pipe, whichever is the larger.

MANHOLES, VhLVE CBAMBERS, ETC. Manholes, valve chambers, and the like shall be constructed Centrally on the control points and, with the exception of tolerances that affect access to bolts, nuts, etc., with a permissible deviation of 2 50 mm 011 a l l clearance dimensions. outside of each nut and bolt-head and the inside face of the wall of a structure or any other fitting shall be at least the specified value.

TESTING GENERAL. AS the work proceeds, pipelines shall be tested in convenient lengths by means of test equipment supplied by the Contractor (see 4.3). In the case of steel pipelines butt-welded in the field, joints shall be tested in accordance with 7.2 immediately after being made. Each test shall be carried out in the presence of the Engineer or his representative. The Contractor shall be responsible for carrying out all tests and for all expenses incurred in this connection (see 8.2). When carrying out the hydraulic test (see 7-31, the Contractor shall ensure that all valves, tees, and bends are properly secured and shored to prevent movement of pipes and fittings and, should any such movement occur, the Contractor shall, at his own expense, reposition and, if necessary, repair the pipes and fittings and the securing means. Until each section of the pipeline has been subjected to the hydraulic test and has complied with the applicable requirement for leakage rate given in 7.3.3, the pipeline will not be accepted. The hydraulic test shall be repeated until the Engineer is satisfied that the section under test complies with the said requirement.

-

-

The clearance dimension between the

INITIAL TESTS ON WELDED STEEL PIPES Dye-Penetrant Test. every weld in steel specials and, where so ordered, in pipes, shall be subjected to a dye-penetrant test carried ouC as specified in RS 4416 and (a)-(g) below: a) The Contractor shall obtain the approval of the Engineer for the group of dye-penetrant and developer that he proposes to use for the test. b) The test shall be applied to shop welding before despatch of specials or pipes to the Site. AS pipe laying progresses, field welds shall be subjected to the test soon after each weld is completed. c) In order to obtain a surface that is dry, clean, and free from scale, dirt, and grease, the Contractor may grind but he shall not grit blast the surface. d) The temperature of the surface to which the developer and the penetrant are applied shall not be below 16 OC or above 52 "C. e ) Observations for indications shall be made not less than 15 min and not more than 60 min after the application of the penetrant. f) Any surfaces on which non-relevant indications are observed shall be explored by visual methods and, if considered necessary by the Engineer, such surfaces shall be cleaned and retested. 4) Welds that show no relevant trace of dve on the develo~er will be acceDted.

Except where they are subject to radiographic testing, the inside and outside of

Radiographic Examination. Welded joints shall be examined radiographically as and to the extent set out in the project specification (see 5.2.3).

STANDARD HYDRAULTC PIPE TEST Test Pressure and Time of Test Unless otherwise ordered, hydraulic testing shall be commenced only after permanent anchor blocks have attained their specified strength, i.e. after 28 d. After tlie pipe trench has been partially backfilled and before ,the trench is filled in at the pipe joints and the fittings, the pipeline shall be tested in sections between isolating valves and/or end caps, blank flanqes, or other isolating devices, at the pressure given in 7.3.1.2 appropriate to the type and, when relevant, class of pipe in the pipeline under test. Where mixed types or classes of pipe occur, and where the pipeline traverses a wide range of altitudes, the Engineer may require that temporary valves or blank flanges be inserted and that the pipeline be tested in reduced lengths and, in addition, at the point of maximum pressure (see 8.2.10). Subject to the provisions of 7.3.1.3 and 7.3.1.4, the test pressure for field testing shall be 1.25 (or such other factor as is stated in the project specification) times the maximum working pressure laid down in the project specification. The test pressure applied over any section of pipeline under test, taking any differences in elevation along the pipeline into account, shall be such that the pressure at any point along the section is not less than the design pressure or more than 1,5 times the design maximum working pressure at these points.

SARS 1200 L-1983 Medium-pressure p i p e l i n e s

12

7.3.1.4

7.3.1.5

1 . 3 . 2 7.3.2.1

7.3.2.2

1.3.3

7.4

0 . 8.1

8.2 8.2.1

8.2.2

8.2.3

The f i e l d tes t p r e s s u r e shall n o t exceed t h e a p p r o p r i a t e of t h e fo l lowing v a l u e s : Type of p i p e ___ S p e c i f i c a t i o n T e s t p r e s s u r e expressed as a - p e r c e n t a g e -._I

number Asbestos cement (COD) S-6 )

of t h e s p e c i f i e d h y d r a u l i c tes t p r e s c 75 % of t h e test p r e s s u r e f o r p e r m e a b i l i t y

(CID) SABS 946) test Mild S t e e l SABS 719 50 % (3,s MPa max.) Reinforced c o n c r e t e SABS 676 75 % P r e s t r e s s e d c o n c r e t e SARS 975 Flanqed cast i r o n RS 2035 67 % (of w o r k s test p r e s s u r e ) Black p o l y e t h y l e n e SARS 533 100 % UPVC SABS 966 75 % Where c i rcumstances permi t . i n t h e case of asbestos cement and c o n c r e t e p i p e s , each s e c t i o n s h a l l be f i l l e d wi th w a t e r 24 h b e f o r e t h e test p r e s s u r e is a p p l i e d to e n s u r e s a t u r a t i o n o f t h e p j , p e l i n e . Care s h a l l b e taken to e n s u r e t h a t a l l a i r is e x p e l l e d from t h e l i n e to be t e s t e d a f t e r it h a s been f i l l e d and b e f o r e t h e test commences. V i s i b l e Leaks Except as al lowed i n 7.3.2.2, t h e s p e c i f i e d test p r e s s u r e s h a l l b e main ta ined f o r a p e r i o d of a t l e a s t 3 h (or such l o n g e r p e r i o d as is n e c e s s a r y for i n s p e c t i o n o f t h e p i p e l i n e ) by means of a s u i t a b l e pump, d u r i n g which p e r i o d a l l p i p e s , s p e c i a l s , j o i n t s , and f i t t i n g s s h a l l b e c a r e f u l l y i n s p e c t e d f o r l e a k s . A l l v i s i b l e l e a k s s h a l l b e made good and any p i p e , s p e c i a l , or f i t t i n g found to be d e f e c t i v e s h a l l b e removed and r e p l a c e d a t t h e expense of t h e C o n t r a c t o r and such replacement material s h a l l , a f t e r i n s t a l l a t i o n , b e t e s t e d a t t h e expense o f t h e Cont rac tor . l n t h e case of p i p e s of nominal d i a m e t e r under 400 mm, t h e tes t p e r i o d may be reduced p r o p o r t i u n a l l y t o t h e nominal d iameter o f t h e p i p e , p rovided t h a t i n no case s h a l l t h e test p e r i o d b e less than 1 h. P e r m i s s i b l e Leakage Rates. The test p r e s s u r e s h a l l b e main ta ined for a f u r t h e r p e r i o d of 1 h a f t e r t h e complet ion of t h e test p e r i o d g iven i n 7.3.2, d u r i n g which t i m e t h e volume of water r e q u i r e d to be pumped i n t o t h e p i p e l i n e f o r maintenance of t h e p r e s s u r e s h a l l b e measured. N o a d d i t i o n a l water s h a l l b e r e q u i r e d i n t h e c a s e o f cont inuous ly welded steel p i p e s , and i n o t h e r cases t h e volume s h a l l n o t exceed t h e v a l u e , i n l i tres, c a l c u l a t e d from t h e a p p l i c a b l e of t h e fo l lowing formulae: a) Asbestos cement and c o n c r e t e p i p e s and c o n c r e t e - l i n e d steel p ipes : 0,075 x d iameter o f p i p e i n m i l l i m e t r e s

75 % of p r e s s u r e s t a t e d i n t h e p r o j e c t s p e c i f i c a t i o n

x l ength o f test s e c t i o n i n k i l o m e t r e s x s q u a r e root of t h e test p r e s s u r e i n megapascals

b) J o i n t e d p i p e s i n steel, cast i r o n , b l a c k poly thene , and uPVC: 0.01 x diameter o f p i p e i n mill imetres

x l e n g t h o f test s e c t i o n i n k i l o m e t r e s x square root o f t h e test p r e s s u r e i n megapascals

TESTS ON EPOXY COATINGS. p ipes : a) T e s t s f o r p i n h o l e s and h o l i d a y s . A low-voltage p i u h o l e d e t e c t o r having a w e t sponge probe s h a l l be used f o r t h e d e t e c t i o n of p i n h o l e s i n c o a t i n g s and l i n i n g s of t t i i ckness less t h a n 500 pm. A high-vol tage h o l i d a y d e t e c t o r s h a l l h e used f o r t h e d e t e c t i o n of h o l i d a y s and p i n h o l e s i n c o a t i n g s and l i n i n g s of t h i c k n e s s g r e a t e r t h a n 500 u m or , i f approved, o f t h i c k n e s s g r e a t e r than 250 pm. b) -thickness test. c ) T e s t f o r completeness of c u r e of coa t ing . Cot ton wool swabs, soaked i n methyl e t h y l ke tone , s h a l l b e p laced on t h e c o a t i n g for 5 min. unacceptab le s o f t e n i n g . d) Other tests. Any o t h e r test(s) t h a t t h e Enyineer may c o n s i d e r necessary , such as t h e d e t e r m i n a t i o n of adhesion by a p u l l - o f f or o t h e r approved method.

MEASUREMENT AND PAYMENT GENERAL. Excavat ion and b a c k f i l l i n g of t r e n c h e s , and l a y i n g o f medium-pressure p i p e l i n e s , w i l l b e measured s e p a r a t e l y under SABS 1200 DB and 8.2, r e s p e c t i v e l y . A t t e n t i o n is drawn p a r t i c u l a r l y t o 5.1.4.1, i n terms of which no payment w i l l be made f o r d e p t h s of e x c a v a t i o n i n e x c e s s of 1,5 m u n l e s s a g r e a t e r depth is shown on t h e drawings, or is r e q u i r e d i n terms of t h e p r o j e c t s p e c i f i c a t i o n , o r h a s been ordered i.n w r i t i n g by t h e Engineer .

SCHEDULED ITEMS Supply, Lay, and Bed Pipes Complete w i t h Coupling2 ....................................... Unit : m P i p e l i n e s w i l l b e measured by l e n g t h o v e r a l l l e n g t h s as l a i d . N o deduct ion w i l l b e made f o r s p e c i a l s and v a l v e s . The rates s h a l l cover t h e cost o f t h e p r o v i s i o n of t h e p i p e s complete w i t h c o u p l i n g s , and t h e costs of t h e handl ing , i n s p e c t i n g , t r a n s p o r t i n g , bedding, l a y i n g , j o i n t i n g , c u t t i n g , t e s t i n g and , when r e l e v a n t , d i s i n f e c t i n g of t h e p i p e s and t h e j0 in t . s . (See 8.2.4.) Extra-over 8.2.1 f o r t h e Supplying, Laying, and Bedding of S p e c i a l s Complete wi th Couplings .......................................................................................... Unit : N o .

S p e c i a l s and v a l v e s w i l l be measured by t h e number of each t y p e , class, and s i ze . The rates, which s h a l l be ex t ra -over t h e rates f o r 8.2.1, s h a l l cover t h e cost of t h e p r o v i s i o n o f each s p e c i a l or v a l v e , complete w i t h c o u p l i n g s , and t h e cost o f t h e handl ing , f i x i n g , bedding, and t e s t i n y of t h e s p e c i a l or v a l v e , as a p p l i c a b l e , and t h e c u t t i n g of t h e p i p e s . No e x t r a payment over and above t h e rates w i l l b e made i n respect o f any a d d i t i o n a l c u t t i n g , t u r n i n g , and j o i n t i n g of p i p e s r e q u i r e d f o r t h e l o c a t i o n of v a l v e s , s p e c i a l s , etc., i n t h e p o s i t i o n s g iven on t h e drawings. Unless s p e c i f i c p r o v i s i o n is made i n t h e schedule , no s e p a r a t e payment w i l l be made f o r t h e supply and f i t t i n g of any a d d i t i o n a l j o i n t s and j o i n t i n g materials which may be r e q u i r e d f o r t h e connec t ion of shor tened p ipe l e n g t h s .

The C o n t r a c t o r s h a l l c a r r y 'out t h e fo l lowing tests on epoxy c o a t i n g s on steel

The t h i c k n e s s of t h e c o a t i n g s h a l l be determined by an approved means.

The swabs s h a l l t h e n be removed and t h e c o a t i n g examined f o r s i g n s of

S e p a r a t e items w i l l be scheduled f o r each d iameter and each t y p e and class of p i p e l a i d .

Extra-over 8.2.1 f o r t.he Supplying, F ix ing , and Bedding o f Valves ........................ Unit : N o .

13 SABS 1200 L-1?83 Medium-pressure pipelines

8.2.4

8.2.5

8.2.6

8.2.7

8.2.8

8.2.9

8.2.10

8.2.11

8.2.12

8.2.13

8.2.14

8.2.15

Extra-over 8.2.1 for the Cutting of the Pipe and the Supplying and Fixing of the Extra Coupling .................................................................... Unit: No. Separate items will be scheduled for each size of pipe. The rate shall cover the cost of the cutting of the pipe and of the supplying and fitting of the additional coupling and of the delivery of unused off-cuts of pipes to the Engineer's office or store.

Short pipe runs that include frequent bends or other specials, or both (as, for instance, in a pump station, an intake tower, or a deviation of a major water main under a road or round a bridge) will be measured in terms of the quantities of scheduled items such as bends, tees, reducers, valves, and stated lengths (or stated approximate lengths) of straight pipe. The rate shall cover the provision of each pipe, special, and valve and, as applicable, the fixing. anchoring, or bedding of them in the manner shown on the drawings or required in terms of the project specification. Extra-over 8.2.1 or 8.2.2 or 8.2.3 for supplying and installing joints with machined collars an<

Details of the special couplings required will he given in the schedule. The rate shall cover the additional cost of providing pipes with machined collars and slip-on couplings as scheduled, and of installation complete as in 8.2.1 or 8.2.2 or 8.2.3.

Where wrapping or protection of joints, etc. in terms of 3.9.6 is ordered, payment will be made as an extra-over per joint. The rate shall cover the cost of the material, plant, and labour necessary for the completion of the joint.

The toLa1 length of the pipeline ordered to be recovered will be measured by length for each stated depth range. No deduction will be made for valves, specials, and the like. The rate shall cover the cost of the excavation and removal of the pipes, valves, and fittings from the trench, the handling and transporting to the Contractor's store on Site, the cleaning and listing of the salvaged recovered materials, and the backfilling of the trench.

The rate shall cover the cost of the provision of suitable testing equipment and the carrying out of the specified test.

The rate shall cover the cost of transporting, handling, laying, and bedding, as well as the provision of new rubber rings or insertions, as the case may be. Couplings and bolts that have to be replaced will be paid for at daywork rates unless a suitable item such as (c) below has been provided in the schedule or, in the opinion of the Engineer, the need for their replacement arose from the fault or negligence of the Contractor.

The rate shall cover the provision of complete sets, each comprising a new rubber ring or insertion, as the case may be, as well as all elements of the coupling and bolts that need replacement. Temporary Valves, etc. ................................................................... Unit: No. or Sum Payment for the supply or loan of temporary valves, end caps, blank flanges, or other isolating devices ordered by the Engineer in terms of 7.3.1.1 will be made at daywork rates or at a price to be agreed by the Engineer, unless the method of payment for the work has been dealt with in the project specification and a suitable item included in the schedule. Anchor/Thrust Blocks and Pedestals a) Dimensions stated or given on drawing ................................................. Unit: No. or Sum OR h) Where, at the tender stage, no detailed drawings or dimensions are given or where only typical drawings are given: Concrete.................................................................................. Itnit: m Formwork. ................................................................................. [Jnit: m H e i r i f o r c e m e n t . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . unit: t Except where measured by number or sum, anchor/thrust blocks and pedestals will be measured as the volume of concrete, area of formwork, and mass of reinforcement, as relevant, placed to dimensions ordered or given on the drawings and schedules of reinforcement. The relevant terms of Clause 8 of SABS 1200 ti or SABS 1200 GA, as applicable, shall apply. Where measured by number or sum, the rate or sum shall cover the cost of excavation and trimming, formwork, reinforcement (if any), and screeding of top surfaces. Concrete Casing .......................................................................... unit: m The concrete will be measured net by volume to the specified width and depth in excess of the external volume of the pipe (i.e. the volume of the pipe will be deducted). The rate shall cover the cost of formwork (including stop ends at flexible joints) and concrete. Valve and Hydrant Chambers, etc. ......................................................... unit: No. Valve and hydrant chambers, manholes, etc., will be measured as complete units. The rate shall cover additional excavation (see Subclauses 8.2.2 and 8.2.3 of SADS 1200 LIB) , materials, plant, and labour necessary for the complete construction including the installation of the surface boxes or covers. a) Manholes .............................................................................. unit: NO. Manholes will be measured as complete units for which separate items will be scheduled for each type of manhole of overall depth not exceeding 1.5 m. The rate shall cover additional excavation, materials, plant, and labour necessary for the complete construction including the installation of the covers. b) Extra-over far manholes of depth exceeding 1 . 5 ....................................... Unit: 0,25 m or Sum Additional depths of manholes in excess of 1,s m will be measured or given in increments of 0.25 m depth for each type of manhole. The rate shall cover the cost of complete construction of each extra 0.25 m additional depth or, where the unit is a sum, such sum shall cover the complete construction to the total extra depth stated or given on a designated drawing. Special Wrapping in Corrosive Soil (diameter and location stated) ......................... unit: m The rate shall cover the cost of the provision and fixing of the wrapping and the cost of any delay and inconvenience cauqed by the requirement to wrap.

supply and Place Pipes, Valves, and Specials (Short pipe runs) ........................... Unit: No.

special couplings ........................................................................ Unit: NO.

Extra-over 8.2.1 for Encasing Joints ..................................................... Unit: NO.

Recover Old Pipeline (depth range stated) ............................................... Unit: m

a) Test recovered pipes on site before relaying .......................................... Unit:

b) Relay pipeline ........................................................................ Unit:

No.

m

c) Joints and couplings for recovered pipeline (Provisional) ............................. Unit: No.

3 2

3

14 SABS 1200 1,-1983 Medium- pr es s lire pipe l ines

GROUND LEVEL IN UNPAVED FINISHED LEVEL IN ROADS, SIDEWALKS, AND OTHER PAVED AREAS

VALVE BOX TYPE 3A TO SABS 558 -

I : 2 MORTAR BACKING

2 2 0 mm BRICKWORK IN 1:3 MORTAR

BACKFILLING TO BE THOROUGHLY COMPACTED ABOVE PlPE TO BELOW BRICKWORK BAS

V,,."..",,",

O Z 2 2

- -

Lu-w-w

TO SlJlT VALVE

Dimensions in millimetres.

NOTE a ) For valves OT nominal b m greater than

b) See 5.6.2. 200 mm $33 relevant detail drawings.

Drawing L - I - Detail of Valve Chamber for a Valve of Nominal Bore not exceeding 200 mm

15 SABS 1200 L-1983

Medi urn-= pres sure pipe l ines

FINISHED LEVEL IN ROADS, SIDEWALKS, AND O T H E R 1

375 mm x 300mm HYDRANT VALVE BOX

(INTERNAL DIMENSIONS OF HYDRANT CHAMBER 420 Nn x 345 mm)

- TYPE 5 TO SABS 558

PAVED AREAS GROUND LEVEL IN UNPAVED AREAS

MORTAR BACKING

TYPICAL 65mm HYDRANT VALVE WITH GUNMETAL OUTLET PIECE. SCREWED " ROUND' THREAD

DOUBLE-FLANGED C I DISTANCE PIECE IF NECESSARY TO RAISE THE OUTLET TO WITHIN 400 mm OF THE TOP OF THE VALVE BOX

IlOmm BRICKWORK IN l:3 MORTAR

UGHLY BEU)W

HYDRANT TEE IN WATER MAIN NOTE

a 1 Test completed chamber with hydrant standpipe after fitting cover in position.

b 1 See 5.6.2.

Dimensions in millimetres

Drawing L-2 -Detail of Brick Hydrant Chamber

375 mm x 300 mm HYDRANT VALVE BOX TYPE 5 TO SABS 558 (INTERNAL DIMENSIONS OF HYDRANT CHAMBER 420 mm x 345 mm) FINISHED LEVEL IN ROADS,

SIDEWALKS, AND OTHER PAVED AREAS

GROUND LEVEL IN UNPAVED AREAS -

MORTAR BACKING

TYPICAL 65 mm HYDRANT VALVE WITH GUNMETAL OUTLET PIECE. SCREWED "ROUND" THREAD

DOUBLE-FLANGED CI DISTANCE PIECE IF NECESSARY TO RAISE THE OUTLET TO WITHIN 400 mm OF THE TOP OF THE VALVE BOX

110 mm BRICKWORK IN I : 3 MORTAR

c BACKFIL .LING TO BE THOROUGHLY COMPACTED ABOVE PIPE TO BELOW

= $ - BRICKWORK BASE

I HYDRANT TEE IN WATER MAIN 2

Dimensions in millimetrer

NOT E a) Test completed chamber with

b) See 5.6.2

hydrant standpipe after fitting cover in position.

U.

Drawing L-3-Detail of Precast Hydrant Chamber

1 7 LiARS 1 2 0 0 I.-] 983 Medium-pressure pipe1 ines

APPENDIX A . APPI.lCAHLE STANIJARDS

Reference is made to the latest issues of the ioJlowing standards:

AP1 1104 RS 486 BS 534 BS 1247 BS 2035 BS 4416 BS 4504

B S 4772 SABS 62

SABS 135 SABS 136 SARS 227 SARS 285 S A W 2R6 SARS 533 S A W 546 SABS 5 5 8 SABS 676 SABS 677 SABS 719 SARS 763 SABS 946 SABS 966 SABS 974

SABS 975 SARS 1109 SAHS 1123 SABS 1130 SAHS 1137 SARS 1200 A SARS 1200 AA SABS 1200 D SABS 1200 DA SABS 1200 DB SABS 1200 G SABS 1200 GA SARS 1200 LR SABS 1200 LK SABS 1294 SABS 0102 SIS 05 59 00

Standard for welding pipelines and related facilities Asbestos-cement pressure pipes and joints Steel pipes and specials for water and sewage Manhole step irons Cast iron flanged pipes and flanged fittings Method for penetrant testing of welded or brazed joints in metals Flanges and bolting for pipes, valves and fittings. Metric series Part I : Ferrous Ductile iron pipes and fittings Steel pipes and pipe fittings up to 1 5 0 mm nominal bore suitable for screwing to IS0 H7 pipe threads tSO metric black bolts, screws, and nuts (hexagon and square) IS0 metric precision hexagon-head holts, screws, and nuts (coarse thread medium fit series) Burnt clay masonry units Calcium silicate masonry units Asbestos cement pressure pipes (constant outside diameter type) Black polyethylene pipes for the conveyance of liquids Cast iron fittings for asbestos cement pressure pipes Cast iron surface boxes and manhole and inspection covers and frames Reinforced concrete pressure pipes Concrete non-pressure pipes Electric welded low carbon steel pipes for aqueous fluids (ordinary duties) Hot-dip (galvanized) zinc coatinqs (other than on continuously zinc-coated sheet and w l i e ) Asbestos cement pressure pipes (constant internal diameter type) Components of unplasticized polyvinyl chloride (uPVC) pressure pipe systems Rubber joint rings (non-cellular) Part I : Joint rings for use in gas, water, sewer, and drainage systems Prestressed concrete pipes Is0 pipe threads for pipes and fittings where pressure-tight joints are made on the threads steel pipe flanges Glass fibre reinforcing material for pipe wrapping Hot-applied bitumen for steel pipeline protection Civil engineering construction : General Civil engineering construction : General (small works) Civil engineering construction : Earthworks Civil engineering construction : Earthworks (s~all works) Civil engineering construction : Earthworks (pipe trenches) Civil engineering construction : Concrete (structural) civi 1 engineering construction : Concrete (small works) Civil engineering construction : Bedding (pipes) Civil engineering construction : Valves (medium-pressure) (In course of preparation) Precast concrete manhole sections and slabs The structural design and installation of precast concrete pipelines Pictorial surface preparation standards for painting steel surfaces

ISBN 0826-06424-4