Breakdown of Proposa

8/9/2019 Breakdown of Proposa

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ItWRAl lON TO BID DOCUMENT

EPCC OF MATERJAL OFF LOADING FACILITIES MOLF) AT TELUK RAMUNlA FOR

REFINERY AND PETROCHEMICALS INTEGRATEDDEMLOPMENT RAPID) PROJECT- PACKAGE2082

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ROAD DRA~NAGE

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Teluk Ramunia Wharf Upgrading -Structure Integrity Study, Conceptual Design Front End

Engineering Design Services

Technical Specification

1 O ROADS AND HARDSTANDING

1

1 1 General

The construction of roads and hardstanding shall generally be carried out

only after completion of all drainage systems, services and ducts which

may affect the Works, unless otherwise agreed by the Engineer.

1

1.2 Subgrade

Material for the top 300mm of subgrade shall have a minimum soaked

laboratory California Bearing Ratio (CBR) of 5 when compacted to 95

of the maximum dry density determined in the BS 1377 Compaction Test

(4.5 kg Heavy Rammed Method).

Throughout the top 300mm of subgrade, the materials shall be

compacted to not less than 95 of the maximum dry density determined

in the BS 1377 Compaction Test (4.5 kg Heavy Rammed Method).

In cut area, the top 300mm of the subgrade shall be scarified and

recompacted to 95 of the maximum dry density determined in the

BS

1377 Compaction Test (4.5 kg. Heavy Rammed Method). If the Engineer is

fully satisfied that the subgrade in its natural state possesses a density

exceeding the requirements, then the surface of the subgrade shall be

trimmed and rolled to obtain a smooth finish.,

Where the material in cut area is found to be unsuitable for use in the top

300mm of subgrade or to a suitable level to be determined by the

Engineer, it shall be removed and replaced with suitable material which

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shall be compacted as indicated above. Alternatively, stabilizing agent

may be used subjected to the Engineer approval.

The subgrade shall be finished in a neat and workmanlike manner, and

the widths of embankments and cuts shall be everywhere at least of those

specified or shown in the Drawings on both sides of the centreline. The top

surface of the subgrade shall have the required shape, superelevation,

levels and grades and shall be finished everywhere to within lOmm and

-

30mm of the required level.

i Where rock surfaces extend over the whole width of the formation:

The rock surface shall be trimmed to a free draining profile, at or below

formation levels. No high spot shall protrude above the formation level.

Any voids or cavities more than

0.5

metres below the formation level shall

be filled up with approved lean concrete having 7-day cube strength

greater than 7

N/sq.mm. The rock surface shall then be brought up to the

formation levels with approved crushed rock or gravel, regulated and

blinded.

ii. where rock outcrop occurs over part of the formation only:

The rock outcrop shall be cut down to at least the formation level.

1.3 Lower Subbase

Where shown or stated in the Drawings, this work shall consist of furnishing,

placing, compacting and shaping lower subbase material on a prepared

and accepted subgrade in accordance with this Specification and the

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lines, levels, grades, dimensions and crosssections shown in the Drawings

and/or as required by the Engineer.

The lower subbase material shall be of inorganic soil, sand, gravel,

weathered or fragmented rock, or a mixture of any of these materials,

essentially free from vegetative and other organic matter.

Prior to placing any lower subbase material, the underlying subgrade

particularly the top 300mm of the subgrade) shall have been shaped

and compacted in accordance with the provisions of subsection 2.

Notwithstanding any earlier approval of finished subgrade, any damage

to or deterioration of the subgrade shall be made good to the satisfaction

of the Engineer before the lower subbase is constructed.

The lower subbase shall be placed over the full width of the formation to

the required thickness as shown in the Drawings or directed by the

Engineer in one layer or more, each layer not exceeding 200mm

compacted thickness. Where two or more layers are required, they shall

be of approximately equal thickness and none shall be less than 100 mm

compacted thicknesses.

Each layer of lower subbase shall be processed as necessary to bring its

moisture content to a uniform level throughout the material suitable for

compaction, and shall then be compacted using suitable compaction

equipment approved by the Engineer to not less than 95 of the

maximum dry density determined in the

S

1377 Compaction Test 4.5 kg

Heavy Rammer Method). Compaction shall be carried out in a

longitudinal direction along the formation and shall generally begin at the

outer edge and progress uniformly toward the crown on each side in such

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Prior to placing of any subbase material, the underlying subgrade

(particularly the top 300mm of the subgrade) or lower subbase shall have

been shaped and compacted in accordance with the provisions of

subsection or subsection 3.3 as appropriate. Notwithstanding any earlier

approval or finished subgrade or lower subbase, any damage to or

deterioration of the subgrade or lower subbase shall be made good to

the satisfaction of the Engineer before the subbase is constructed.

The subbase shall be placed with an equipment approved by the

Engineer over the full width of the formation to the required thickness as

shown in the Drawings or directed by the Engineer in one layer or more,

each layer not exceeding 200mm compacted thickness. Where two or

more layers are required, they shall be of approximately equal thickness

and none shall be less than 100 mm compacted thicknesses.

Compaction shall be carried out in a longitudinal direction along the

formation and shall generally begin at the outer edge and progress

uniformly toward the centre on each side, except on superelevated

curves where rolling shall begin at the lower edge and progress uniformly

toward the higher edge. In all cases, compaction shall be carried out in

such a manner that each section receives equal compactive effort, all to

the satisfaction of the Engineer.

Throughout the placing, adjustment of moisture content and compaction

of subbase material, care shall be taken to maintain a uniform gradation

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Teluk Ramunia Wharf Upgrading -Structure Integrity Study, Conceptual Design

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of the material and prevent its separation into coarse and fine parts, all to

the satisfaction of the Engineer.

The subbase shall be finished in a neat and workmanlike manner; its width

shall be everywhere at least of that specified or shown in the Drawings

on

both sides of the centreline; and its average thickness over any 100-metre

length shall not be less than the required thickness. The top surface of the

subbase shall have the required shape, superelevation, levels and grades,

and shall be everywhere within the tolerances specified in subsection

8.

1 5

Crushed Aggregate Base Course

This work shall consist of furnishing, placing, compacting and shaping

crushed aggregate base course material on a prepared and accepted

subgrade or lower subbase or subbase in accordance with this

Specification and the lines, levels, grades, dimensions and crosssections

shown in the Drawings and/or as required by the Engineer.

The crushed aggregate base course material shall be of crushed rock, or

crushed gravel, or a mixture of crushed and natural aggregate, which is

hard, durable, clean and essentially free from clay and other deleterious

materials.

The material shall conform to the following physical and mechanical

quality requirement:

i

The plasticity index shall not be more than

6;

ii)

The aggregate crushing value when tested in accordance with MS

30 shall be not more than 30;

The flakiness index when tested in accordance with MS 30 shall be

not more than 30;

iii)

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iv) The gradation shall comply with the envelope shown in Table for

the type specified.

Table 2: Gradation Limits for Crushed Aggregate Road Base

Prior to the placing of any crushed aggregate base course material, the

underlying subgrade or lower subbase or subbase shall have been

shaped and compacted in accordance with the provisions of the

appropriate section of this Specification. Notwithstanding any earlier

approval of finished subgrade or lower subbase or subbase, any damage

to or deterioration of the subgrade or lower subbase or subbase shall be

made good to the satisfaction of the Engineer before crushed aggregate

base course

is

constructed.

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Teluk Ramunia Wharf Upgrading -Structure Integrity Study, Conceptual Design 8 Front End



The crushed aggregate base course shall be placed to the required width

and thickness as shown in the Drawings or directed by the Engineer in one

layer or more, each layer not exceeding 200mm compacted thickness.

Where two or more layers are required, they shall be of approximately

equal thickness and none shall be less than 100 mm compacted

thicknesses. Spreading shall be done by a mechanical spreader

approved by the Engineer or, i f approved by the Engineer, by a motor

grader.

Prior to spreading, crushed aggregate base course shall be processed as

necessary to bring its moisture content to a uniform level throughout the

material suitable for compaction. Spread material shall be maintained at

the correct moisture content for proper compaction by sprinkling with

water or drying as may be necessary, and shall be compacted using

suitable compaction equipment approved by the Engineer to not less

than 95 of the maximum dry density determined in the

BS

377

Compaction Test

4.5

kg Heavy Rammer Method).

Compaction shall be carried out in a longitudinal direction along the

carriageway, and shall generally begin at the outer edge and progress

uniformly toward the centre of each side, except on superelevated

curves where rolling shall begin at the lower edge and progress uniformly

toward the higher edge. In all cases, compaction shall be carried out in

such a manner that each section receives equal compactive effort, all to

the satisfaction of the ENGINEER

Throughout the placing, adjustment of moisture content and compaction

of crushed aggregate road base material, care shall be taken to maintain

a uniform gradation of the material and prevent its separation into coarse .

and fine parts, all to the satisfaction of the Engineer.

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The material shall have a CBR value of not less than 80 when compacted

to 95 of the maximum dry density determined in the BS 1377

Compaction Test

4.5

kg Heavy Rammer Method) and soaked for 4 days

under a surcharge of 4.5 kg.

The crushed aggregate base course shall be finished in a neat and

workmanlike manner; its width shall be everywhere a t least of that

specified or shown in the Drawings on both sides of the centrelines; and its

average thickness over any 100-metre length shall not be less than the

required thickness. The top surface of the crushed aggregate base course

shall have the required shape, superelevation, levels and grades and shall

be everywhere within the tolerances specified in subsection 7.2.

1.6

Binder and Wearing Course

Asphaltic Concrete

Unless otherwise shown in the Drawings, this work shall consist of furnishing,

placing, shaping and compacting asphaltic concrete wearing course on

a prepared and accepted bituminous or bitumen primed pavement

courses immediately after the application of a tack coat. The materials

shall be supplied in accordance with JKR Specification No.JKR 20401-

0029-97 and laid in accordance with the Guidelines for The Laying of

Asphaltic Concrete as described in the same Specification, and to the

lines, levels, grades, dimensions and cross-sections shown in the Drawings


Bituminous Macadam


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Unless otherwise shown in the Drawings, this work shall consist of furnishing,

placing, shaping and compacting bituminous Macadam wearing course

on a prepared and accepted bituminous or bitumen primed pavement

course immediately after the application of a tack coat. The materials

shall be supplied in accordance with JKR Specification

No.JKR 20401-

0030-97 and laid in accordance with the Guidelines for The Laying of

Bituminous Macadam as described in the same Specification, and to the

lines, levels, grades, dimensions and cross-sections shown in the Drawings


11.7

Horizontal Alignment, Surface Levels and Surface Regularity of Pavement

Courses

Horizontal Alignment

The horizontal alignment shall be determined from the centreline of the

pavement surface shown in the Drawings. The edges of the pavement as

constructed and all other parallel construction lines shall be correct within

a tolerance of +

50mm and Omm from the centreline. Kerbs, channel

blocks and edge lines shall be laid with a smooth alignment within a

tolerance of + 25mm and - Omm from the centreline.

Surface Levels of Pavement Courses

The design levels of pavement courses shall be calculated from the

vertical profile, cross fall and pavement course thickness shown in the

Drawings. The level of any point on the constructed surface of a

pavement course shall be the design level subject to the appropriate

tolerances given in Table 3.

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Documents

Breakdown of Proposa