INDEXSR. NO. ITEMS PAGE NO.

1. GENERAL INFORMATION 2. CLIMATIC DATA WITH SOURCE OF DATA 3. CATCHMENT AREA 4. NATURE OF STREAM 5. FOUNDATION AND SOIL DATA 6. ALIGNMENTAND APPROACHES 7. MAPS, PLANS, X-SECTTONS AND TOPOGRAPHICAL

FEATURES.8. CONSTRUCTION CONSIDERATIONS9. DETAIL OF EXISTING STRUCTURES / IN THE

STREAM /KHAD AND ITS TRIBUTARIES.10. HYDRAULIC DATA PROCESSING

PROFORMA FOR COLLECTION OF HYDRAULIC DATA FOR DESIGN OF BRIDGES

A. GENERAL INFORMATION

1. Name of Road and its classification. Chikni Behal Balali Road.

2. Mileage / Km & chainage of centre of crossing

from start of road. 2/330

3. Name of stream Jajjar Khad.

4. Name of the nearest inhabited/ Identifiable locality

at Either end of crossing on the Roads leading to

the site (Give approx. distance) Behal 1.30 Km

5. Nearest rail head and its distance from start of

road. Kiratpur Sahib 1Km.

6. What arrangement exist for crossing the river/

khad at present:

(a) During Monsoon Nil

(b) During Dry Season Kutcha Road

B. CLIMATIC DATA WITH SOURCE OF DATA

1 Temperature :-

(a) Minimum 6° c(b) Maximum 45 c

2 Rain fall:

(a) Max. recorded intensity of rain fall in the Catchments in cm. per hour in the severest storm. 40 M. M Per Hour

(b) Frequency of such storms in years. 1800 mm Yearly(c) Other rain fall data to the extent available

monthly or annual.

3. Snowfall(a) Monthly and annual snow fall data. Nil(b) Maximum intensity of snow fall. Nil

4. Whether site is affected by avalanches,cloudbursts and land slides? If so, give details. No

C. CATCHMENT AREA

1 Indicate broadly the nature of catchment i. e. whether:-

(a) Steep bare rock and city pavements. 30%(b) Rocky slopes with vegetation and

wooded. 40%(c) Plateau, lightly covered, ordinary, bare

ground.(d) Densely built up areas of cities with

metalled roads and paths.(e) Residential areas not densely built up with

Metalled roads.(f) Residential areas not densely built up with

on-metalled roads.(g) Clayey soils, stiff & bare.(h) Clayey soils, lightly covered.(i) Loam, lightly cultivated or covered.(j) Loam, largely cultivated.(k) Suburbs with gardens, lawns &

macadamized Roads.(I) Sandy soils, lightly growth(m) Sandy soils, covered heavy bush.(n) Jungle areas.(o) Parks, lawns, meadow, gardens,

Cultivated area.

2. The possibility of subsequent changes in catchment afforestation, deforestation, urban development, extension or reduction in cultivated area etc. Nil

3. Storage area in catchment such as lakes, reservoirs etc. their distances from proposed bridge site both NilU/s as well as D/s.(a) Artificial ( Indicate sizes of storage) ----(b) Natural ----

4. Length if catchment in kms. 3.75

5. Width of catchment in Kms. 1.75

6. Total Area of catchment in Sq. Kms. 6.56

(a) Hilly area in Sq. Kms. 2.30

(b) Plain area in Sq. Kms. 4.26

7. Cross slope of catchment.

8. Longitudinal slope of catchment. 1:7.81

9. Distance from source to bridge site In Kms.

From Topo Sheet (H). 3.75

10. Difference in height between source and

bridge site in metres from Topo Sheet (H). 480 Mtr.

11. Recommended value of rugosity Coefficient

(n). 0.035

12. Recommended value of constant 'C' For

Dicken's formula. 14

D. NATURE OF STREAM

1. Is the stream

(a) Alluvial (with erodible banks) Yes

(b) Quasi-alluvial (with more or Less fixed

bed but erodible banks)

( c ) Rigid (with inerodible banks and bed).

2. Is the stream :

(a) perennial

(b) Seasonal Yes

3. Does the stream meander or change Courses ? If

so, the extent of meander experienced in the

past be shown on site plan. No

4. Low water level (L. W. L) at bridge site.

(a) The period of occurrence of L.W.L to

determine the feasibility of C/o intermediate

piers and to examine provision of diversion

during construction. 596.05mtr.

(b) Observed surface velocity at L. W. L.

Mtr. /sec. Nil

(c) Bed slope at L.W. L. 1 in 44.42

4. Ordinary flood level (O. F. L) at bridge Site.

(a) Observed surface velocity at O. F. L.. 5.00 mtr. /sec

(b) Water surface slope at O. F. L. 1:44.42

6. High flood level (H. F. L) at bridge site with

source from which taken. 597.00

(a) Observed surface velocity at H. F. L. 5.00 Mtr. /sec

(b) Water strrface slope at H. F, L. 1:44.42

7. A chart of the period of high flood levels for as

many years as the relevant data has been

recorded. ----

8. Afflux, if any, and its influence on area in the

vicinity likely to be affected. Nil

9. Linear water way at H.F.L. as per Clause NO.

104 of IRC : 5-1998. 12.20 Mtr.

10. Whether the flood carries big

boulders, trees, bushes etc.? No

11. Are the banks susceptible to scour? If so,

indicate the extent of cutting of banks in the

past. No

12. R.L. and location of maximumobserved score below H. F. L. Nil

13. R.L. of maximum anticipated scoure below H. F. L. Nil

14. Is stream navigable? If so, minimum clearance required. NO

15. Are large scale river training works Necessary? If so, give details. Not required

E. FOUNDATION AND SOIL DATA

1. Test results of samples of bores (Log-of-Test Boring), giving there- In the values of the soil available at different depths in respect of the following (The sub-surface exploration for determining the design parameters shall be carried out in accordance with clause no. 704 of IRC-78 and a copy of the test report be attached with the data). site investigation shall be conducted by a qualified Geotechnical Engineer and geologist shall invariably be associated.(a) Mean diameter of particle in mm. 2 mm(b) Value of Lacy's silt factor (Ksf). 9.20(c) Angle of internal friction of soil (0).(d) Cohesion (c).(e) Angle of wall friction (s).(f) Dry density of soil 18 Tonne/m3

(g) Saturated density of soil(h) Allowable/Safe bearing capacity 25.00 Tonne/M2

of soil with R. L. at which calculated for :(i) Left side abutment 25.00 Tonne/M2

(ii) Right side abutment 25.00 Tonne/M2

F. ALIGNMENTAND APPROACHES

1. Is the proposed alignment of the bridge 'SKEW'

or normal to channel ? If skew, give angle of

skew. Normal

2. Will approaches be straight? If not, give radii of

curves for: Straight

(a) Right side approach. ---

(b) Left side approach. ---

3. Proposed gradient in approaches for : Near to level

(a) Right side approach. Level

(b) Left side approach. Level

4. Will visibility of the proposed bridge be un-

obstructed upto 50 mtrs. On either side of

bridge? If not give details. Yes

5. Proposed type of surface of approaches. Flexible Pavement

G. MAPS, PLANS, X-SECTTONS AND TOPOGRAPHICAL FEATURES.

1. An index map to a suitable small Scale (topo

sheets in scale 1cm to 500mtr.) showing the

proposed Location of bridge, the alternative sites

investigated &rejected, the existing means of

communication, the general topography of the

country and important towns &villages etc. In

the vicinity. Attached

.-

2. A contour survey plan of the stream showing

all topographical features and extending

upstream & downstream of the proposed site

to the distance shown below. (or such other

greater distances as the design engineer may

feel suitable for design) and to a sufficient

distance on either side to give a clear

indication of the topographical or other

features that might influence the location and

design of the bridge and its approaches. All

sites for crossings worth consideration shall be

shown on the plan.

(a) 100 mtrs. For catchment areas less Than

3.00 sq. Km. (scale not less than Attached

(b) 300 mtrs. For catchment areas 3.00 To

15.00 sq. Km. (scale not less than 1/1000). Attached

(c) 1500 mtrs. Or the width between The

bank which ever is more, for catchment

areas more than 15.00 Sq. Km. Attached

3. A site plan, to a suitable scale, showing

details of site selected and extending not less

then 100 mtrs. Upstream and downstream

from the centre !ine of crossing and covering

the approaches to a sufficient distance, which

in the case of a major bridge, shall not be less

then 500 mtrs. on either side of the channel. In

case the river is meandering in the vicinity of

the bridge site, the vicinity of the bridge site,

the course of the river extending a suitable

distance not less than two loops on either side

of the proposed crossing shall be plotted on

side plan. The following information shall be

indicated on site plan :-

(a) The name of the channel or bridge and of

the road with R.D. at the centre of

crossing. Jajjar Khad/ Jajjar Bridge 2/330

(b) The direction of flow of water at

maximum discharge.

(c) The alignment of existing approaches and

of the proposed crossing and its

approaches.

(d) The angle and direction of skew if the

crossing is aligned on a skew. No (Normal Bridge)

(e) The name of the nearest inhabited

identifiable locality at either and of the

crossing on roods leading to the site. Behal & Baloli

(f) Reference and R.L. of permanent stations

and benchmarks used for layout duly

connected to G.T.S. benchmark, wherever

available. G.T.S. Not available, T.B.M taken

(g) The location and identification number of

the cross-section and longitudinal section

taken within the scope of the site plan and

the exact location of their extreme points. 3 X-section & 1 L- Section

(h) The location of trial pits or borings, each

being given an identification number and

connected to the datum. Not required

(i) The location of all nullahs, buildings,

places of worship, wells, burial grounds,

outcrops of rocks and other possible

obstructions which may affect the

approach alignment. Shown on counter map

4. Longitudinal section of the channel, showing

the site of bridge with H.F.L., L. W. L. and the

bed levels at suitably spaced intervals along

the approximate centre line of the deep water

channel between the approximate points to

which the survey plan has been prepared. The

horizontal scale shall be the same as for the

survey plan and the vertical scale not less than

1/1000. Attached

5. Longitudinal section of the road in approaches

upto a distance of 300 mtrs. On either side of

the proposed bridge site clearly indicating the

levels, chain age and proposed gradient. Attached

H CONSTRUCTION CONSIDERATIONS

1. Recommended type, span and carriage-way of

the proposed bridge. R.C.C. T-Beam Bridge

2. Recommended maximum flood discharge at

bridge Site. 35 Cumecs

3. Recorded traffic census data. 90 Per Day

4. Minimum vertical clearance required. 1.50 Mtr.

5. Recommended deck level. 600.50 Mtr.

6. Possibility of constructing intermediate piers. No

7. Possibility of sinking wells and driving piles. No

8. Quantum of de-watering effort required in

Foundation. No

9 Possibility of diversion of traffic during

Construction of proposed bridge. Through dry river bed

10. Type of loading for which the structure is

To be designed. AA class loading

11. Seismic Zone under which the proposed Zone -IV

Bridge falls.

12. Type of foundation recommended whether :

(a) Open foundations. Open foundations

(b) Well foundations.

(c) Pile foundations.

13. Is site safe from slides and falling down of

boulders ? If not, give details. Yes it is safe

14. Is the bridge site safe from slope hazard, soil

liquefaction or poor soil characteristics etc. ? Yes it is safe

Give complete information separately in case

alternative sites fire available. Also attach

comparative statement for all bridge sites including

the all bridge sites including the reasons for

selection of the site finally recommended.

15. Special Requirements :-

(a) Proximity of a bridge to a town or Village and

need for footpaths. Nil

(b) Provision on bridge for carrying Utilities such

as telephone / electrical /waterlines etc. Nil

(c) Electrification of the bridge Nil

(d) Special precautions against aggressive

Atmospheres and water etc.

(e) Provision for increasing the bridge length In

future, if required Nil

A. HYDRAULIC DATA PROCESSING

1. Name of Road and its classification. Chikni Behal Balali Road.

2. Rugosity co efficient 0.035

3. Catchment area 3.50 Sqm.

4. Bed slop of Khad 1:44.42

5. H.F.L. at Bridge Site 597.00

6. L.W.L at Bridge Site 596.00

7. Lowest Bed Level 595.80

8. Proposed Deck Level 600.50

9. Linear water way at H.F.L. 12.20

10. Lacy’s silt factor 9.2

11. Alignment at bridge site Normal to Flow

12. Safe bearing capacity 25 tonne/m2

13. Dicken’s co- efficient 14

14. Proposed foundation Open

15. Type of loading Class AA

B. DISCHARGE CALCULATION (BY AREA VELOCITY METHOD)

1. At 50MTR U/S

A = 10.20

P = 18.20

R = A/P 0.56

Q = (10.20 X (0.56) 2/3 X (0.0258) ½ ) = 29.72 Cum/Sec0.035

2. At 0.00 MTR or at Bridge Site

A = 9.30

P = 12.55

R = A/P 0.741

Q = (9.30 X (0.741) 2/3 X (0.0258) ½ ) = 32.64 Cum/Sec0.035

3. At 50MTR D/S

A = 14.30

P = 35.10

R = A/P 0.407

Q = (14.30 X (0.407) 2/3 X (0.0258) ½ ) = 33.69 Cum/Sec0.035

B. DISCHARGE SUMMARY

X- SECTION DISCHARGE

At 50MTR U/S 29.72 Cum/Sec

At 0MTR OR AT BRIDGE SITE 32.64 Cum/Sec

At 50MTR D/S 33.69 Cum/Sec

MAXIMUM DISCHARGE = 33.69 Cum/Sec

DISCHARGE BY DICHENS FORMULA

C = 14

A = 3.5 Sqm.

Q = CA3/4 35.82 Cum/Sec

MORE DISCHARGE GIVEN BY DICHEN FORMULA= 35.82SQM

HANCE DESIGN DISCHARGE = 1.30X35.82 = 46.56 Cum/Sec

Abutments of the proposed bridge are to be designed on scour consideration

Normal scour depth (dsm) =1.34(Db2/Ksf ) ¼

Db = Discharge per mtr. Length = Design Discharge (46.56) = 3.81 Linear water way at HFL (12.20)

dsm = 1.34(3.812/9.2 ) 1/3 = 1.56 mtr.

Maximum Scour Depth = d max. 1.27x1.56 = 1.98mtr.

Taking 2.00 mtr. Grip for the proposed abutment foundation

Hence Foundation level = HFL- d max.- 2.00

= 597.00-1.98-2.00 = 593.02

Depth below lowest level = 595.80-593.02 =2.78mtr.

Taking foundation level 3.00 mtr. Below lowest bed level

Proposed founding level = 595.80-3.00 = 592.80 mtr. (for both side abutments)

Height of abutment = 600.50-592.80 = 7.70 mtr.

RECOMMENDED DESIGN PARAMETERS:- Design Discharge 46.56 Cum/Sec

Deck level 600.50 mtr

Founding level 592.80 mtr.

Height of abutment 7.70 mtr.

Depth below lowest level 3.00 mtr.

Proposed span 14.00 mtr.

Carriage way 7.50 mtr.