detailed design report...detailed design report hydraulic design & network modelling for shimla...

Project Hydraulic Design & Network modelling for Shimla Water Supply

Client Shimla Municipal Council

Work Order No. MCS/EE-Prod/-World Bank/24x7/1441, Dt: 11/08/2017

Designed By Dahasahasra Waternet Solutions,

911, C-Wing, Urvi Park, Oppo. Oswal Park,

Pokhran Road No. 2, Thane (W) 400601

Detailed Design Report

Hydraulic Design & Network modelling for Shimla Water Supply,

World Bank Program

Volume III: Pipe Thickness of Pipes in All Areas Excluding Demo Area

2

Table of Contents Preface .............................................................................................................................................. 3

Design of M.S. Pipe for Internal Pressure ....................................................................................... 4

Field Conditions ............................................................................................................................. 4

Analysis of Results ......................................................................................................................... 4

Procedure ...................................................................................................................................... 5

Appendix ......................................................................................................................................... 11

Results of the Pipe Thickness ........................................................................................................... 11

Pipe results for distribution pipes with demand of 2020 and without PRVs .................................. 11

Table 2: B_PostSanjauli_450DI .................................................................................................... 11

Table 3: C_Ridge ........................................................................................................................ 182

Table 4: D_PostRidge_400CI ...................................................................................................... 246

Table 5: E_Mains_Field.............................................................................................................. 302

Table 6: F_Dhingodevi ............................................................................................................... 396

Table 7: G_Mashobra ................................................................................................................ 428

Table 8: H_Craignaino ............................................................................................................... 433

Table 9: I_Dhalli ......................................................................................................................... 435

Table 10: J_Kusumpti ................................................................................................................. 441

Table 11: K_Jakhu ...................................................................................................................... 546

Table 12: L_North_Oak_1 .......................................................................................................... 570

Table 13: M_Shoghi ................................................................................................................... 582

3

Preface

Shimla is a historic hill top city and capital of the Himachal Pradesh. It has an average altitude of 2,206 meters above mean sea level. There are no water bodies near the main city and the closest river, the Sutlej, is about 21 km away. Due to water scarcity, people faced hardship in getting drinking water, thus there is a water crisis in the city. Despite acute water scarcity, water infrastructure is too old. Most of the distribution pipelines are laid during British era, as a result the Non-revenue water (NRW) level is high and there is no consumer satisfaction. With an aim of increasing drinking water availability to the city and improving service level, Shimla Municipal Corporation (SMC) has a planned a comprehensive water supply project. Government of Himachal Pradesh (GoHP) has incorporated this scheme in AMRUT program aided by the World Bank. To begin with, a 24x7 water supply scheme has been suggested in three Demo areas of Sanjauli1, Sanjauli2 and Totu. Design of distribution system of these demo areas has been submitted. As the pressures in the pipelines are very high, it is necessary to provide strong pipes to sustain the pressures. Hence, design of pipe thickness has been carried out which is submitted in this report.

4

Design Procedure

Design of M.S. Pipe for Internal Pressure The thickness of pipe shell is required to be checked to withstand internal pressures. The internal pressure for which the pipe thickness is required to be checked which should be the maximum of the pressure for the three conditions given below:

1. 1.5 times working pressure 2. 1.5 times maximum static pressure 3. Maximum operating pressure plus pressure due to water hammer.

Field Conditions Following field conditions are considered:

• Since flow in entire distribution pipe network is by gravity, water hammer pressure is not considered. Hence, only above conditions of (1) 1.5 times working pressure and (2) 1.5 times maximum static pressure are considered and the maximum pressure shall be the maximum of these two conditions.

• It is assumed that the pipelines are laid above ground level on RCC chairs. Design of

the chairs shall be such that the deflection shall not be more than the permissible value. It is strongly suggested that the spacing between the two chairs should not be more than 5m. Proper expansion joints shall be provided.

Analysis of Results From pipe results provided in Volume II, maximum pressure acting on each pipe in demo zone is known which is considered in the design. These pressure are increased to 1.5 times as per above conditions of internal pressure, so the maximum pressure for which pipes are to be designed is computed. The analysis is made for two cases, (i) pipes with Pressure reducing Valves (PRVs) and (ii) pipes without PRVs. The pressures will be maximum for the demand of the year 2020 and without considering the peak factor. Hence, analysis is carried out for the two cases- (a) Pipe results with PRVs, with demand of 2020 and without peak factor of 3 and (b) Pipe results without PRVs with demand of 2020 and without peak factor of 3. The two tables with results are shown in Appendix. The pipe material, diameter and thickness are shown in Table (b).

5

Procedure (1)Minimum Thickness: As per IS 3589 : 2001, Edition 4.2, the minimum thickness of the M.S. Pipe line shall not be less than the thickness’’, worked out by the formula given below.

2

PDT

S=

Where: P = Internal design pressure in Mpa D = Diameter of pipe in mm (O.D.) S = axfxe a = Design factor = 0.6 for working pressure = 0.9 for test pressure f = minimum yield stress in MPa = 235 MPa for Fe 410 e = Weld efficiency = 0.8 to 0.9

Corrosion Allowance: Corrosion Allowance of 1.5 mm has been considered in the design. Check for minimum wall thickness: If D/t ratio is less than 300, minimum wall thickness computed as above is correct.

(2)Hydraulic Pressure Test (Factory Test) As per IS 3589, each pipe shall be hydraulically tested at the manufacturer’s works before the pipe is coated, wrapped and lined. The maximum test pressure to be limited to 5 MPa wherever applicable.

(3)Vacuum Design:-

Under certain conditions of operations, water may get removed from some section of pipeline faster than it can be supplied from the source. Such condition may occur as a result of valve operation (sudden full opening of scour valve) or draining of pipe /rupture of pipe at a point at low level. If at such locations the pipe is exposed to atmosphere and the thickness of the pipe is small, air must be admitted into the pipe to prevent an excessive reduction of the internal pressure and the subsequent collapse of the pipe throughout in portion of its length because of external atmospheric pressure.

6

The resistance of an exposed pipe to vacuum pressure depends on thickness to diameter ratio. As per American Practice (Errata of M11 Code), the critical collapsing pressure of mild steel pipe can be calculated as under:

3

66,000,000ct

Pd

=

Where t = thickness in inch And d = diameter in inch Pc= Collapse pressure in psi The pressure obtained shall be converted to kg/cm2 by the relationship 1 psi = 0.070307 Kg/cm2

Also as per I.S. 5822 – 1970, the pipe thickness shall be strong enough to withstand partial vacuum corresponding to two third of the atmospheric pressure, which may occur with in the pipe. This means the Pc shall be greater than 0.34 kg/cm2.

(4)Design Scenario As terrain is hilly, huge pressures are encountered. Pipe thickness shall be strong enough to withstand pressure at worst condition. Such condition shall be when the pipes are subjected to the demand of the year 2020 and the PRv are inactive (fully open). Hence, the thickness of pipes have been computed for this condition and are shown in Tables 2 to 13 in Appendix.

(5)Summary of Pipes Required Summary of Pipes Required is shown in Table 1.

7

Table 1: Summary of Pipes Required

Shimla Area Zone

GI Heavy Duty (As per IS 1239, Part 1) MS (As per IS 3589:2001)

Grand Total

80 mm (t=4.8 mm)

100 mm (t=5.4 mm)

150 mm (t=5.4 mm)

Total

ID=206.5 mm

(t=6.3 mm)

ID=260.4 (t=6.3 mm)

ID=309.7 (t=7.1 mm)

ID=339.6 mm (t=8

mm)

ID=388.8 mm (t=8.8

mm) Total

B_PostSanjauli 450DI

Advance_Study_Steel_Tank 2191 488 798 3476 782 146 927 4403

Chakkar/Sandal 7018 1163 952 9133 913 460 1373 10506

Fingask_1 3521 538 297 4355 4355

Fingask_2 5898 231 1265 7394 961 170 1130 8524

IIAS_Summer Hill 2147 309 555 3011 375 375 3386

Kamnadevi_Temple 9355 202 1774 11332 763 221 984 12316

Kolestone1 3887 557 1199 5643 689 661 1350 6993

Kolestone2/Bharari 4042 293 975 5309 1376 71 430 1877 7186

Ridge_direct_from Sanjauli 4153 992 738 5883 51 369 420 6303

Tutikandi_1 421 165 367 953 319 319 1272

Tutikandi_2 1974 380 1768 4121 388 826 1214 5335

Z6_Baluganj_Harinagar 1929 686 222 2836 135 135 2971

Z7_Tutikandi_3 1196 223 514 1934 71 647 718 2652

Total 47731 6226 11423 65380 6434 1566 2823 10823 76203

C_Ridge C_Ridge 9531 1502 2176 13209 1374 75 207 110 1766 14975

Total 9531 1502 2176 13209 1374 75 207 110 1766 14975

D_PostRidge 400CI

HP_University 2833 741 332 3906 45 45 3951

Phagali 4624 762 617 6003 391 205 596 6600

Summerhill 787 211 998 998

8

Shimla Area Zone


Grand Total

80 mm (t=4.8 mm)

100 mm (t=5.4 mm)

150 mm (t=5.4 mm)

Total

ID=206.5 mm

(t=6.3 mm)

ID=260.4 (t=6.3 mm)

ID=309.7 (t=7.1 mm)

ID=339.6 mm (t=8

mm)

ID=388.8 mm (t=8.8

mm) Total

Taramata_Hall 4446 593 1769 6807 731 191 922 7729

Z4_New1 2153 760 958 3871 670 122 792 4663

Total 14843 2856 3887 21586 1837 518 2355 23942

E_Mains Field

Khalini_Forest_Steel_Tank 3551 70 1191 4813 874 130 1004 5816

Knolls_Wood 2622 97 1424 4144 133 97 230 4374

Mains_Field1 7375 390 1150 8915 115 648 373 1136 10051

Mains_Field2 4811 502 451 5763 1050 175 1225 6988

New_Shimla_Sector2 2241 122 195 2558 2558

New_Shimla_Sector3 1081 190 309 1580 40 40 1620

New_Shimla_Sector4 4449 1793 1693 7935 384 145 78 607 8541

NewShimla_Sector3A 1566 420 1986 1986

SDA_Complex 3990 19 1101 5111 423 423 5534

Shivpuri 1752 388 824 2964 282 282 3246

Taramata_Temple_Sector1 921 156 1077 1077

Z3_Knolls_Wood 2581 918 668 4167 231 112 396 739 4906

Total 36940 4490 9583 51012 3533 1002 1151 5685 56697

F_Dhingodevi

Dhingodevi1 5231 2026 742 7999 133 133 8132

Dhingodevi2 2715 383 497 3595 473 196 670 4265

Z1_Dhingodevi3 2641 219 234 3093 467 467 3560

Z5_Dhingodevi4 6264 158 769 7191 112 34 56 202 7393

Z8_Dhingo5 9328 2285 11613 873 81 141 1095 12708

9

Shimla Area Zone


Grand Total

80 mm (t=4.8 mm)

100 mm (t=5.4 mm)

150 mm (t=5.4 mm)

Total

ID=206.5 mm

(t=6.3 mm)

ID=260.4 (t=6.3 mm)

ID=309.7 (t=7.1 mm)

ID=339.6 mm (t=8

mm)

ID=388.8 mm (t=8.8

mm) Total

Total 26179 2786 4527 33492 2058 114 394 2566 36059

G_Mashobra 1418 555 650 2623 655 485 356 1497 4120

Total 1418 555 650 2623 655 485 356 1497 4120

I_Dhalli

Dhalli1 457 839 4 1299 1299

Dhalli2 2946 917 359 4221 207 312 518 4740

Total 3403 1756 362 5521 207 312 518 6039

J_Kusumpti

Basant_Vihar 8144 2520 1181 11845 476 49 526 12371

HP_PWD_Near_Kusumpti 1384 473 802 2659 264 359 623 3281

IAS_Colony1 680 5 145 830 830

IAS_Colony2 4098 938 471 5506 5506

IAS_Colony3 1620 179 1799 1799

Kusumpti 2366 275 1378 4019 207 207 4226

Phase_2_New_Shimla 3371 332 176 3880 3880

Phase_2_New_Shimla_Sector_6 1918 218 200 2337 2337

Scrala 7431 593 982 9006 398 123 522 9528

Vikasnagar 5937 1701 1065 8703 424 44 467 9170

Z10_Tibti_Panthaghati 2445 225 405 3076 163 163 3239

Z11_Sargeen_Chowk 5279 849 6128 6128

Total 44674 7280 7833 59787 1932 173 403 2507 62294

K_Jakhu Jakhu 5976 768 2598 9342 1183 510 302 1996 11338

Z2_Jakhu2 6444 167 2834 9446 683 1538 458 53 2732 12177

10

Shimla Area Zone


Grand Total

80 mm (t=4.8 mm)

100 mm (t=5.4 mm)

150 mm (t=5.4 mm)

Total

ID=206.5 mm

(t=6.3 mm)

ID=260.4 (t=6.3 mm)

ID=309.7 (t=7.1 mm)

ID=339.6 mm (t=8

mm)

ID=388.8 mm (t=8.8

mm) Total

Total 12420 935 5433 18788 1866 2048 458 53 302 4728 23516

L_North Oak_1

L_North_Oak_1 2716 378 1388 4482 417 417 4899

Total 2716 378 1388 4482 417 417 4899

M_Shoghi M_Shoghi 3844 2306 2685 8835 939 939 9774

Total 3844 2306 2685 8835 939 939 9774

Grand Total 204369 31083 50121 285573 21412 5463 6620 163 302 33961 319535

11

Appendix

Results of the Pipe Thickness

Pipe results for distribution pipes with demand of 2020 and without PRVs

Table 2: B_PostSanjauli_450DI

Results from WaterGEMS Minimum Thickness Check for

minimum wall thickness

Vacuum Pressure Provide: (a) GI Heavy Duty (As per IS 1239, Part 1); (b)MS (As

per IS 3589:2001)

P_Area Label Materia

l Length (m)

Diameter (mm)

P_Max (m H2O)

1.5*Pmax

t=PD/2s

Allowance for

corrosion (mm)

Thickness considering corrosion

(mm)

D/t

If D/t < 300

thickness is OK

Collapsing

Pressure (Pv)

(kg/cm2)=

If Pv > 0.34

buckling due to vacuum will not occur

Material

Diameter (mm)

Thickness (mm)

B_PostSanjauli_450DI

BP-2366 GI 27.2 80 381

571.5 1.99 1.5 3.49 22.9 OK 384.4 OK GI 80 4.8


BP-2367 GI 15.38 80 381

571.5 1.99 1.5 3.49 22.9 OK 384.4 OK GI 80 4.8


BP-2505 GI 77.93 80 380.2

570.3 1.98 1.5 3.48 23.0 OK 383.0 OK GI 80 4.8


BP-2506 GI 3.23 80 380.2

570.3 1.98 1.5 3.48 23.0 OK 383.0 OK GI 80 4.8


BP-2365 GI 30.11 80 377.7

566.6 1.97 1.5 3.47 23.1 OK 378.7 OK GI 80 4.8


BP-2364 GI 49.59 80 377.5

566.3 1.97 1.5 3.47 23.1 OK 378.4 OK GI 80 4.8


BP-2361 GI 10.67 80 369

553.5 1.92 1.5 3.42 23.4 OK 364.1 OK GI 80 4.8


BP-2271 GI 32.68 80 368.9

553.4 1.92 1.5 3.42 23.4 OK 363.9 OK GI 80 4.8

12




per IS 3589:2001)


l Length (m)

Diameter (mm)

P_Max (m H2O)

1.5*Pmax

t=PD/2s

Allowance for

corrosion (mm)


(mm)

D/t

If D/t < 300

thickness is OK

Collapsing

Pressure (Pv)

(kg/cm2)=

If Pv > 0.34


Material

Diameter (mm)

Thickness (mm)


BP-2359 GI 30.66 80 368.6

552.9 1.92 1.5 3.42 23.4 OK 363.4 OK GI 80 4.8


BP-2369 GI 6.99 80 367.1

550.7 1.91 1.5 3.41 23.4 OK 360.9 OK GI 80 4.8


BP-2368 GI 18.61 80 365.6

548.4 1.91 1.5 3.41 23.5 OK 358.4 OK GI 80 4.8


BP-2273 GI 36.68 80 364.8

547.2 1.90 1.5 3.40 23.5 OK 357.1 OK GI 80 4.8


BP-2360 GI 23.33 80 364.1

546.2 1.90 1.5 3.40 23.5 OK 356.0 OK GI 80 4.8


BP-2270 GI 4.75 80 362.6

543.9 1.89 1.5 3.39 23.6 OK 353.5 OK GI 80 4.8


BP-2274 GI 28.83 80 362.6

543.9 1.89 1.5 3.39 23.6 OK 353.5 OK GI 80 4.8


BP-2269 GI 11.47 80 361.8

542.7 1.89 1.5 3.39 23.6 OK 352.2 OK GI 80 4.8


BP-2268 GI 8.94 80 361.7

542.6 1.89 1.5 3.39 23.6 OK 352.1 OK GI 80 4.8


BP-2357 GI 17.59 80 359.6

539.4 1.88 1.5 3.38 23.7 OK 348.7 OK GI 80 4.8


BP-2266 GI 8.06 80 358.6

537.9 1.87 1.5 3.37 23.7 OK 347.0 OK GI 80 4.8


BP-2356 GI 26.02 80 357.3

536.0 1.86 1.5 3.36 23.8 OK 345.0 OK GI 80 4.8


BP-2265 GI 8.58 80 355.5

533.3 1.85 1.5 3.35 23.8 OK 342.1 OK GI 80 4.8


BP-2358 GI 48.02 80 353.4

530.1 1.84 1.5 3.34 23.9 OK 338.7 OK GI 80 4.8


BP-143 GI 30.42 80 351.5

527.3 1.83 1.5 3.33 24.0 OK 335.7 OK GI 80 4.8


BP-2264 GI 14.54 80 351

526.5 1.83 1.5 3.33 24.0 OK 334.9 OK GI 80 4.8


BP-2263 GI 12.08 80 350.5

525.8 1.83 1.5 3.33 24.0 OK 334.2 OK GI 80 4.8

13




per IS 3589:2001)


l Length (m)

Diameter (mm)

P_Max (m H2O)

1.5*Pmax

t=PD/2s

Allowance for

corrosion (mm)


(mm)

D/t

If D/t < 300

thickness is OK

Collapsing

Pressure (Pv)

(kg/cm2)=

If Pv > 0.34


Material

Diameter (mm)

Thickness (mm)


BP-2259 GI 94.16 80 350.4

525.6 1.83 1.5 3.33 24.0 OK 334.0 OK GI 80 4.8


BP-2261 GI 40.27 80 350.4

525.6 1.83 1.5 3.33 24.0 OK 334.0 OK GI 80 4.8


BP-2363 GI 8.03 80 344.6

516.9 1.80 1.5 3.30 24.3 OK 325.0 OK GI 80 4.8


BP-2262 GI 27.33 80 344.5

516.8 1.80 1.5 3.30 24.3 OK 324.8 OK GI 80 4.8


BP-2267 GI 64.78 80 344.5

516.8 1.80 1.5 3.30 24.3 OK 324.8 OK GI 80 4.8


BP-1943 GI 5.84 80 344.1

516.2 1.79 1.5 3.29 24.3 OK 324.2 OK GI 80 4.8


BP-1942 GI

225.09 80 342.3

513.5 1.79 1.5 3.29 24.3 OK 321.4 OK GI 80 4.8


BP-2196 GI 54.18 80 340.6

510.9 1.78 1.5 3.28 24.4 OK 318.8 OK GI 80 4.8


BP-2260 GI 20.43 80 340.6

510.9 1.78 1.5 3.28 24.4 OK 318.8 OK GI 80 4.8


BP-2362 GI 26.57 80 340.3

510.5 1.78 1.5 3.28 24.4 OK 318.4 OK GI 80 4.8


BP-2197 GI 28.08 80 335.9

503.9 1.75 1.5 3.25 24.6 OK 311.7 OK GI 80 4.8


BP-2272 GI 46.76 80 333.8

500.7 1.74 1.5 3.24 24.7 OK 308.6 OK GI 80 4.8


BP-2198 GI 51.56 80 333.3

500.0 1.74 1.5 3.24 24.7 OK 307.9 OK GI 80 4.8


BP-141 GI 29.17 80 331.6

497.4 1.73 1.5 3.23 24.8 OK 305.3 OK GI 80 4.8


BP-142 GI 17.18 80 331.6

497.4 1.73 1.5 3.23 24.8 OK 305.3 OK GI 80 4.8


BP-1937 GI 7.05 80 329.2

493.8 1.72 1.5 3.22 24.9 OK 301.8 OK GI 80 4.8


BP-2194 GI 25.21 80 328.4

492.6 1.71 1.5 3.21 24.9 OK 300.6 OK GI 80 4.8

14




per IS 3589:2001)


l Length (m)

Diameter (mm)

P_Max (m H2O)

1.5*Pmax

t=PD/2s

Allowance for

corrosion (mm)


(mm)

D/t

If D/t < 300

thickness is OK

Collapsing

Pressure (Pv)

(kg/cm2)=

If Pv > 0.34


Material

Diameter (mm)

Thickness (mm)


BP-1936 GI 13.38 80 327.8

491.7 1.71 1.5 3.21 24.9 OK 299.7 OK GI 80 4.8


BP-1769 GI 58.22 80 326.6

489.9 1.70 1.5 3.20 25.0 OK 298.0 OK GI 80 4.8


BP-1725 GI 11.83 80 325.6

488.4 1.70 1.5 3.20 25.0 OK 296.5 OK GI 80 4.8


BP-1711 GI 24.58 80 324.3

486.5 1.69 1.5 3.19 25.1 OK 294.7 OK GI 80 4.8


BP-1853 GI 29.46 80 324

486.0 1.69 1.5 3.19 25.1 OK 294.2 OK GI 80 4.8


BP-2355 GI 3.52 80 323.5

485.3 1.69 1.5 3.19 25.1 OK 293.5 OK GI 80 4.8


BP-2301 GI 15.17 80 321.8

482.7 1.68 1.5 3.18 25.2 OK 291.1 OK GI 80 4.8


BP-2354 GI 36.35 80 321.4

482.1 1.68 1.5 3.18 25.2 OK 290.5 OK GI 80 4.8


BP-1723 GI 20.36 80 321.2

481.8 1.68 1.5 3.18 25.2 OK 290.2 OK GI 80 4.8


BP-1724 GI 18.96 80 321.2

481.8 1.68 1.5 3.18 25.2 OK 290.2 OK GI 80 4.8


BP-2193 GI 31.4 80 318.8

478.2 1.66 1.5 3.16 25.3 OK 286.8 OK GI 80 4.8


BP-2398 GI 6.22 80 318.8

478.2 1.66 1.5 3.16 25.3 OK 286.8 OK GI 80 4.8


BP-1854 GI 22.92 80 318

477.0 1.66 1.5 3.16 25.3 OK 285.6 OK GI 80 4.8


BP-139 GI 46.25 80 317.8

476.7 1.66 1.5 3.16 25.3 OK 285.4 OK GI 80 4.8


BP-1710 GI 33.57 80 317.6

476.4 1.66 1.5 3.16 25.3 OK 285.1 OK GI 80 4.8


BP-1772 GI 14.98 80 317.5

476.3 1.66 1.5 3.16 25.3 OK 284.9 OK GI 80 4.8


BP-2199 GI 31.6 80 317.1

475.7 1.65 1.5 3.15 25.4 OK 284.4 OK GI 80 4.8

15




per IS 3589:2001)


l Length (m)

Diameter (mm)

P_Max (m H2O)

1.5*Pmax

t=PD/2s

Allowance for

corrosion (mm)


(mm)

D/t

If D/t < 300

thickness is OK

Collapsing

Pressure (Pv)

(kg/cm2)=

If Pv > 0.34


Material

Diameter (mm)

Thickness (mm)


BP-1685 GI 33.39 80 316.9

475.4 1.65 1.5 3.15 25.4 OK 284.1 OK GI 80 4.8


BP-1717 GI 25.08 80 316.6

474.9 1.65 1.5 3.15 25.4 OK 283.7 OK GI 80 4.8


BP-1851 GI 11.49 80 315.8

473.7 1.65 1.5 3.15 25.4 OK 282.5 OK GI 80 4.8


BP-2189 GI 15.45 80 314.8

472.2 1.64 1.5 3.14 25.5 OK 281.1 OK GI 80 4.8


BP-1742 GI 16.88 80 313.7

470.6 1.64 1.5 3.14 25.5 OK 279.6 OK GI 80 4.8


BP-1938 GI 13.79 80 313.7

470.6 1.64 1.5 3.14 25.5 OK 279.6 OK GI 80 4.8


BP-2177 GI 34.05 80 313.7

470.6 1.64 1.5 3.14 25.5 OK 279.6 OK GI 80 4.8


BP-1850 GI 14.23 80 312.5

468.8 1.63 1.5 3.13 25.6 OK 277.9 OK GI 80 4.8


BP-1852 GI 29.24 80 312.5

468.8 1.63 1.5 3.13 25.6 OK 277.9 OK GI 80 4.8


BP-138 GI 28.47 80 311.8

467.7 1.63 1.5 3.13 25.6 OK 277.0 OK GI 80 4.8


BP-1144 GI

156.25 80 311.7

467.6 1.63 1.5 3.13 25.6 OK 276.8 OK GI 80 4.8


BP-1145 GI 6.83 80 311.7

467.6 1.63 1.5 3.13 25.6 OK 276.8 OK GI 80 4.8


BP-1911 GI 7.51 80 311.5

467.3 1.62 1.5 3.12 25.6 OK 276.5 OK GI 80 4.8


BP-2191 GI 7.9 80 310.7

466.1 1.62 1.5 3.12 25.6 OK 275.4 OK GI 80 4.8


BP-1741 GI 26.55 80 310.1

465.2 1.62 1.5 3.12 25.7 OK 274.6 OK GI 80 4.8


BP-132 GI 7.55 80 310

465.0 1.62 1.5 3.12 25.7 OK 274.5 OK GI 80 4.8


BP-1771 GI 13.65 80 309.7

464.6 1.62 1.5 3.12 25.7 OK 274.1 OK GI 80 4.8

16




per IS 3589:2001)


l Length (m)

Diameter (mm)

P_Max (m H2O)

1.5*Pmax

t=PD/2s

Allowance for

corrosion (mm)


(mm)

D/t

If D/t < 300

thickness is OK

Collapsing

Pressure (Pv)

(kg/cm2)=

If Pv > 0.34


Material

Diameter (mm)

Thickness (mm)


BP-1714 GI 18.29 80 309.6

464.4 1.61 1.5 3.11 25.7 OK 273.9 OK GI 80 4.8


BP-2176 GI 4.95 80 308.9

463.4 1.61 1.5 3.11 25.7 OK 273.0 OK GI 80 4.8


BP-1849 GI

198.75 80 308.7

463.1 1.61 1.5 3.11 25.7 OK 272.7 OK GI 80 4.8


BP-2449 GI 52.53 80 308.4

462.6 1.61 1.5 3.11 25.7 OK 272.3 OK GI 80 4.8


BP-2192 GI 10.39 80 308.4

462.6 1.61 1.5 3.11 25.7 OK 272.3 OK GI 80 4.8


BP-1910 GI 10.43 80 308.1

462.2 1.61 1.5 3.11 25.7 OK 271.9 OK GI 80 4.8


BP-1713 GI 8.29 80 307.8

461.7 1.61 1.5 3.11 25.8 OK 271.5 OK GI 80 4.8


BP-1860 GI 11.96 80 307.4

461.1 1.60 1.5 3.10 25.8 OK 270.9 OK GI 80 4.8


BP-1920 GI 9.77 80 307.4

461.1 1.60 1.5 3.10 25.8 OK 270.9 OK GI 80 4.8


BP-1722 GI 51.43 80 307.2

460.8 1.60 1.5 3.10 25.8 OK 270.6 OK GI 80 4.8


BP-1740 GI 18.95 80 306.9

460.4 1.60 1.5 3.10 25.8 OK 270.2 OK GI 80 4.8


BP-1739 GI 48.21 80 306.2

459.3 1.60 1.5 3.10 25.8 OK 269.3 OK GI 80 4.8


BP-1716 GI 20.16 80 305.9

458.9 1.60 1.5 3.10 25.8 OK 268.9 OK GI 80 4.8


BP-2412 GI 2.17 80 305.7

458.6 1.59 1.5 3.09 25.9 OK 268.6 OK GI 80 4.8


BP-1712 GI 13.88 80 305.7

458.6 1.59 1.5 3.09 25.9 OK 268.6 OK GI 80 4.8


BP-2190 GI 10.31 80 305.3

458.0 1.59 1.5 3.09 25.9 OK 268.1 OK GI 80 4.8


BP-1715 GI 14.79 80 304.7

457.1 1.59 1.5 3.09 25.9 OK 267.2 OK GI 80 4.8

17




per IS 3589:2001)


l Length (m)

Diameter (mm)

P_Max (m H2O)

1.5*Pmax

t=PD/2s

Allowance for

corrosion (mm)


(mm)

D/t

If D/t < 300

thickness is OK

Collapsing

Pressure (Pv)

(kg/cm2)=

If Pv > 0.34


Material

Diameter (mm)

Thickness (mm)


BP-2411 GI 16.5 80 304.6

456.9 1.59 1.5 3.09 25.9 OK 267.1 OK GI 80 4.8


BP-2400 GI 3.54 80 304.5

456.8 1.59 1.5 3.09 25.9 OK 267.0 OK GI 80 4.8


BP-1486 GI 2.55 80 303.9

455.9 1.59 1.5 3.09 25.9 OK 266.2 OK GI 80 4.8


BP-1768 GI 36.33 80 303.5

455.3 1.58 1.5 3.08 25.9 OK 265.6 OK GI 80 4.8


BP-133 GI 8.49 80 303.4

455.1 1.58 1.5 3.08 26.0 OK 265.5 OK GI 80 4.8


BP-1939 GI 6.29 80 303.2

454.8 1.58 1.5 3.08 26.0 OK 265.2 OK GI 80 4.8


BP-250 GI 3.57 80 303

454.5 1.58 1.5 3.08 26.0 OK 264.9 OK GI 80 4.8


BP-1485 GI

128.94 80 302.7

454.1 1.58 1.5 3.08 26.0 OK 264.5 OK GI 80 4.8


BP-1770 GI 16.36 80 302.6

453.9 1.58 1.5 3.08 26.0 OK 264.4 OK GI 80 4.8


BP-1875 GI 11.8 80 302.3

453.5 1.58 1.5 3.08 26.0 OK 264.0 OK GI 80 4.8


BP-2399 GI 22.2 80 302.1

453.2 1.58 1.5 3.08 26.0 OK 263.7 OK GI 80 4.8


BP-249 GI 15.71 80 301.8

452.7 1.57 1.5 3.07 26.0 OK 263.3 OK GI 80 4.8


BP-2504 GI 7.59 80 301.6

452.4 1.57 1.5 3.07 26.0 OK 263.1 OK GI 80 4.8


BP-2508 GI 3.91 80 301.1

451.7 1.57 1.5 3.07 26.1 OK 262.4 OK GI 80 4.8


BP-1689 GI 34.88 80 300.9

451.4 1.57 1.5 3.07 26.1 OK 262.1 OK GI 80 4.8


BP-1919 GI 11.4 80 300.7

451.1 1.57 1.5 3.07 26.1 OK 261.9 OK GI 80 4.8


BP-2153 GI 63.24 80 300.5

450.8 1.57 1.5 3.07 26.1 OK 261.6 OK GI 80 4.8

18




per IS 3589:2001)


l Length (m)

Diameter (mm)

P_Max (m H2O)

1.5*Pmax

t=PD/2s

Allowance for

corrosion (mm)


(mm)

D/t

If D/t < 300

thickness is OK

Collapsing

Pressure (Pv)

(kg/cm2)=

If Pv > 0.34


Material

Diameter (mm)

Thickness (mm)


BP-2450 GI 17.39 80 300.1

450.2 1.57 1.5 3.07 26.1 OK 261.1 OK GI 80 4.8


BP-2195 GI 10.19 80 299.5

449.3 1.56 1.5 3.06 26.1 OK 260.3 OK GI 80 4.8


BP-2507 GI 5.78 80 298.9

448.4 1.56 1.5 3.06 26.2 OK 259.5 OK GI 80 4.8


BP-1874 GI 22.05 80 298.9

448.4 1.56 1.5 3.06 26.2 OK 259.5 OK GI 80 4.8


BP-1706 GI 16.61 80 298.7

448.1 1.56 1.5 3.06 26.2 OK 259.2 OK GI 80 4.8


BP-1691 GI 33.2 80 297.6

446.4 1.55 1.5 3.05 26.2 OK 257.7 OK GI 80 4.8


BP-1719 GI 30.29 80 297.6

446.4 1.55 1.5 3.05 26.2 OK 257.7 OK GI 80 4.8


BP-2180 GI 43.48 80 297.6

446.4 1.55 1.5 3.05 26.2 OK 257.7 OK GI 80 4.8


BP-156 GI 6.14 80 297.5

446.3 1.55 1.5 3.05 26.2 OK 257.6 OK GI 80 4.8


BP-2503 GI 20.18 80 297.1

445.7 1.55 1.5 3.05 26.2 OK 257.1 OK GI 80 4.8


BP-2092 GI 21.72 80 296.7

445.1 1.55 1.5 3.05 26.2 OK 256.6 OK GI 80 4.8


BP-2100 GI 43.34 80 295.8

443.7 1.54 1.5 3.04 26.3 OK 255.4 OK GI 80 4.8


BP-155 GI 10.99 80 295.6

443.4 1.54 1.5 3.04 26.3 OK 255.1 OK GI 80 4.8


BP-1867 GI 42.33 80 295.3

443.0 1.54 1.5 3.04 26.3 OK 254.7 OK GI 80 4.8


BP-252 GI 5.73 80 295.1

442.7 1.54 1.5 3.04 26.3 OK 254.5 OK GI 80 4.8


BP-1718 GI 30.46 80 294.6

441.9 1.54 1.5 3.04 26.3 OK 253.8 OK GI 80 4.8


BP-1720 GI 23.73 80 294.6

441.9 1.54 1.5 3.04 26.3 OK 253.8 OK GI 80 4.8

19




per IS 3589:2001)


l Length (m)

Diameter (mm)

P_Max (m H2O)

1.5*Pmax

t=PD/2s

Allowance for

corrosion (mm)


(mm)

D/t

If D/t < 300

thickness is OK

Collapsing

Pressure (Pv)

(kg/cm2)=

If Pv > 0.34


Material

Diameter (mm)

Thickness (mm)


BP-1692 GI 36.9 80 294.5

441.8 1.54 1.5 3.04 26.3 OK 253.7 OK GI 80 4.8


BP-1709 GI 20.78 80 294.5

441.8 1.54 1.5 3.04 26.3 OK 253.7 OK GI 80 4.8


BP-2072 GI 23.81 80 294

441.0 1.53 1.5 3.03 26.4 OK 253.0 OK GI 80 4.8


BP-1721 GI 18.13 80 293.7

440.6 1.53 1.5 3.03 26.4 OK 252.6 OK GI 80 4.8


BP-2466 GI 63.76 80 293.7

440.6 1.53 1.5 3.03 26.4 OK 252.6 OK GI 80 4.8


BP-1767 GI 27.82 80 293.5

440.3 1.53 1.5 3.03 26.4 OK 252.4 OK GI 80 4.8


BP-1734 GI 58.77 80 293.5

440.3 1.53 1.5 3.03 26.4 OK 252.4 OK GI 80 4.8


BP-1708 GI 28.1 80 293.3

440.0 1.53 1.5 3.03 26.4 OK 252.1 OK GI 80 4.8


BP-154 GI 5.56 80 293.1

439.7 1.53 1.5 3.03 26.4 OK 251.8 OK GI 80 4.8


BP-2188 GI 26.9 80 292.7

439.1 1.53 1.5 3.03 26.4 OK 251.3 OK GI 80 4.8


BP-1738 GI 32.36 80 291.9

437.9 1.52 1.5 3.02 26.5 OK 250.3 OK GI 80 4.8


BP-153 GI 16.15 80 291.3

437.0 1.52 1.5 3.02 26.5 OK 249.5 OK GI 80 4.8


BP-2093 GI 26.01 80 291.3

437.0 1.52 1.5 3.02 26.5 OK 249.5 OK GI 80 4.8


BP-251 GI 9.93 80 290.9

436.4 1.52 1.5 3.02 26.5 OK 249.0 OK GI 80 4.8


BP-2445 GI 16 80 290.8

436.2 1.52 1.5 3.02 26.5 OK 248.9 OK GI 80 4.8


BP-442 GI 5.09 80 290.4

435.6 1.51 1.5 3.01 26.5 OK 248.3 OK GI 80 4.8


BP-2091 GI 35.85 80 290.1

435.2 1.51 1.5 3.01 26.5 OK 248.0 OK GI 80 4.8

20




per IS 3589:2001)


l Length (m)

Diameter (mm)

P_Max (m H2O)

1.5*Pmax

t=PD/2s

Allowance for

corrosion (mm)


(mm)

D/t

If D/t < 300

thickness is OK

Collapsing

Pressure (Pv)

(kg/cm2)=

If Pv > 0.34


Material

Diameter (mm)

Thickness (mm)


BP-2071 GI 41.42 80 290.1

435.2 1.51 1.5 3.01 26.5 OK 248.0 OK GI 80 4.8


BP-2184 GI 15.24 80 289.9

434.9 1.51 1.5 3.01 26.6 OK 247.7 OK GI 80 4.8


BP-2455 GI 6.12 80 289.9

434.9 1.51 1.5 3.01 26.6 OK 247.7 OK GI 80 4.8


BP-2446 GI 18.21 80 289.8

434.7 1.51 1.5 3.01 26.6 OK 247.6 OK GI 80 4.8


BP-2448 GI 20.38 80 289.8

434.7 1.51 1.5 3.01 26.6 OK 247.6 OK GI 80 4.8


BP-254 GI 3.55 80 289.4

434.1 1.51 1.5 3.01 26.6 OK 247.1 OK GI 80 4.8


BP-1900 GI 9.53 80 289.3

434.0 1.51 1.5 3.01 26.6 OK 246.9 OK GI 80 4.8


BP-1701 GI 55.35 80 288.5

432.8 1.50 1.5 3.00 26.6 OK 245.9 OK GI 80 4.8


BP-2451 GI 23.51 80 288.5

432.8 1.50 1.5 3.00 26.6 OK 245.9 OK GI 80 4.8


BP-441 GI 55.08 80 288.4

432.6 1.50 1.5 3.00 26.6 OK 245.8 OK GI 80 4.8


BP-2454 GI 18.17 80 288.1

432.2 1.50 1.5 3.00 26.6 OK 245.4 OK GI 80 4.8


BP-253 GI 8.9 80 288

432.0 1.50 1.5 3.00 26.6 OK 245.3 OK GI 80 4.8


BP-2179 GI 28.89 80 287.6

431.4 1.50 1.5 3.00 26.7 OK 244.8 OK GI 80 4.8


BP-2099 GI 18.07 80 287.5

431.3 1.50 1.5 3.00 26.7 OK 244.6 OK GI 80 4.8


BP-2465 GI 9.15 80 287.5

431.3 1.50 1.5 3.00 26.7 OK 244.6 OK GI 80 4.8


BP-1137 GI

312.91 80 287.4

431.1 1.50 1.5 3.00 26.7 OK 244.5 OK GI 80 4.8


BP-2464 GI 23.75 80 286.9

430.4 1.50 1.5 3.00 26.7 OK 243.9 OK GI 80 4.8

21




per IS 3589:2001)


l Length (m)

Diameter (mm)

P_Max (m H2O)

1.5*Pmax

t=PD/2s

Allowance for

corrosion (mm)


(mm)

D/t

If D/t < 300

thickness is OK

Collapsing

Pressure (Pv)

(kg/cm2)=

If Pv > 0.34


Material

Diameter (mm)

Thickness (mm)


BP-1737 GI 22.12 80 286.8

430.2 1.50 1.5 3.00 26.7 OK 243.7 OK GI 80 4.8


BP-1690 GI 9.36 80 286.4

429.6 1.49 1.5 2.99 26.7 OK 243.2 OK GI 80 4.8


BP-1899 GI 60.55 80 286.3

429.5 1.49 1.5 2.99 26.7 OK 243.1 OK GI 80 4.8


BP-2186 GI 11.95 80 286.1

429.2 1.49 1.5 2.99 26.7 OK 242.8 OK GI 80 4.8


BP-172 GI 14.2 80 286.1

429.2 1.49 1.5 2.99 26.7 OK 242.8 OK GI 80 4.8


BP-2087 GI 83.7 80 285.9

428.9 1.49 1.5 2.99 26.7 OK 242.6 OK GI 80 4.8


BP-2098 GI 11.81 80 285.6

428.4 1.49 1.5 2.99 26.8 OK 242.2 OK GI 80 4.8


BP-1707 GI 53.17 80 285.5

428.3 1.49 1.5 2.99 26.8 OK 242.1 OK GI 80 4.8


BP-2183 GI 7.01 80 285.5

428.3 1.49 1.5 2.99 26.8 OK 242.1 OK GI 80 4.8


BP-427 GI 49.18 80 285.4

428.1 1.49 1.5 2.99 26.8 OK 242.0 OK GI 80 4.8


BP-208 GI 29.36 80 285.3

428.0 1.49 1.5 2.99 26.8 OK 241.8 OK GI 80 4.8


BP-1704 GI 75.92 80 285.3

428.0 1.49 1.5 2.99 26.8 OK 241.8 OK GI 80 4.8


BP-2070 GI 4.69 80 285.3

428.0 1.49 1.5 2.99 26.8 OK 241.8 OK GI 80 4.8


BP-1688 GI 24.35 80 285.2

427.8 1.49 1.5 2.99 26.8 OK 241.7 OK GI 80 4.8


BP-2069 GI 13.2 80 285.2

427.8 1.49 1.5 2.99 26.8 OK 241.7 OK GI 80 4.8


BP-2187 GI 9.08 80 284.2

426.3 1.48 1.5 2.98 26.8 OK 240.4 OK GI 80 4.8


BP-149 GI 30.6 80 284.1

426.2 1.48 1.5 2.98 26.8 OK 240.3 OK GI 80 4.8

22




per IS 3589:2001)


l Length (m)

Diameter (mm)

P_Max (m H2O)

1.5*Pmax

t=PD/2s

Allowance for

corrosion (mm)


(mm)

D/t

If D/t < 300

thickness is OK

Collapsing

Pressure (Pv)

(kg/cm2)=

If Pv > 0.34


Material

Diameter (mm)

Thickness (mm)


BP-1736 GI 31.89 80 284.1

426.2 1.48 1.5 2.98 26.8 OK 240.3 OK GI 80 4.8


BP-167 GI 14.6 80 283.7

425.6 1.48 1.5 2.98 26.8 OK 239.8 OK GI 80 4.8


BP-2054 GI 81.69 80 283.3

425.0 1.48 1.5 2.98 26.9 OK 239.3 OK GI 80 4.8


BP-1766 GI 43.04 80 283.3

425.0 1.48 1.5 2.98 26.9 OK 239.3 OK GI 80 4.8


BP-2467 GI 13.01 80 283.2

424.8 1.48 1.5 2.98 26.9 OK 239.2 OK GI 80 4.8


BP-1733 GI 31.3 80 282.8

424.2 1.48 1.5 2.98 26.9 OK 238.7 OK GI 80 4.8


BP-2089 GI 22.82 80 282.4

423.6 1.47 1.5 2.97 26.9 OK 238.2 OK GI 80 4.8


BP-166 GI 14.08 80 282

423.0 1.47 1.5 2.97 26.9 OK 237.7 OK GI 80 4.8


BP-1705 GI 15.1 80 281.7

422.6 1.47 1.5 2.97 26.9 OK 237.3 OK GI 80 4.8


BP-2094 GI 6.24 80 280.9

421.4 1.47 1.5 2.97 27.0 OK 236.3 OK GI 80 4.8


BP-2095 GI 15.42 80 280.9

421.4 1.47 1.5 2.97 27.0 OK 236.3 OK GI 80 4.8


BP-152 GI 16.94 80 280.8

421.2 1.46 1.5 2.96 27.0 OK 236.2 OK GI 80 4.8


BP-2444 GI 6.32 80 280.5

420.8 1.46 1.5 2.96 27.0 OK 235.8 OK GI 80 4.8


BP-2471 GI 13.81 80 280

420.0 1.46 1.5 2.96 27.0 OK 235.2 OK GI 80 4.8


BP-2068 GI 14.72 80 280

420.0 1.46 1.5 2.96 27.0 OK 235.2 OK GI 80 4.8


BP-2185 GI 32.8 80 280

420.0 1.46 1.5 2.96 27.0 OK 235.2 OK GI 80 4.8


BP-2074 GI 18.72 80 279.8

419.7 1.46 1.5 2.96 27.0 OK 234.9 OK GI 80 4.8

23




per IS 3589:2001)


l Length (m)

Diameter (mm)

P_Max (m H2O)

1.5*Pmax

t=PD/2s

Allowance for

corrosion (mm)


(mm)

D/t

If D/t < 300

thickness is OK

Collapsing

Pressure (Pv)

(kg/cm2)=

If Pv > 0.34


Material

Diameter (mm)

Thickness (mm)


BP-2443 GI 19.71 80 279.5

419.3 1.46 1.5 2.96 27.0 OK 234.6 OK GI 80 4.8


BP-168 GI 17.75 80 279.2

418.8 1.46 1.5 2.96 27.1 OK 234.2 OK GI 80 4.8


BP-206 GI 3.23 80 279.2

418.8 1.46 1.5 2.96 27.1 OK 234.2 OK GI 80 4.8


BP-2410 GI 2.35 80 278.5

417.8 1.45 1.5 2.95 27.1 OK 233.3 OK GI 80 4.8


BP-1442 GI 65.53 80 278.5

417.8 1.45 1.5 2.95 27.1 OK 233.3 OK GI 80 4.8


BP-2090 GI 15.48 80 278.4

417.6 1.45 1.5 2.95 27.1 OK 233.2 OK GI 80 4.8


BP-1765 GI 31.17 80 278.2

417.3 1.45 1.5 2.95 27.1 OK 232.9 OK GI 80 4.8


BP-205 GI 11.61 80 278.1

417.2 1.45 1.5 2.95 27.1 OK 232.8 OK GI 80 4.8


BP-1732 GI 12.3 80 278

417.0 1.45 1.5 2.95 27.1 OK 232.7 OK GI 80 4.8


BP-1687 GI 15.34 80 277.9

416.9 1.45 1.5 2.95 27.1 OK 232.6 OK GI 80 4.8


BP-1735 GI 6.39 80 277.3

416.0 1.45 1.5 2.95 27.2 OK 231.8 OK GI 80 4.8


BP-2088 GI 21.8 80 277.2

415.8 1.45 1.5 2.95 27.2 OK 231.7 OK GI 80 4.8


BP-147 GI 15.59 80 277.1

415.7 1.45 1.5 2.95 27.2 OK 231.6 OK GI 80 4.8


BP-148 GI 11.13 80 277.1

415.7 1.45 1.5 2.95 27.2 OK 231.6 OK GI 80 4.8


BP-2409 GI 26.71 80 277

415.5 1.44 1.5 2.94 27.2 OK 231.5 OK GI 80 4.8


BP-171 GI 9.05 80 276.9

415.4 1.44 1.5 2.94 27.2 OK 231.3 OK GI 80 4.8


BP-165 GI 31.26 80 276.6

414.9 1.44 1.5 2.94 27.2 OK 231.0 OK GI 80 4.8

24




per IS 3589:2001)


l Length (m)

Diameter (mm)

P_Max (m H2O)

1.5*Pmax

t=PD/2s

Allowance for

corrosion (mm)


(mm)

D/t

If D/t < 300

thickness is OK

Collapsing

Pressure (Pv)

(kg/cm2)=

If Pv > 0.34


Material

Diameter (mm)

Thickness (mm)


BP-1764 GI 19.21 80 276.5

414.8 1.44 1.5 2.94 27.2 OK 230.9 OK GI 80 4.8


BP-2064 GI 43.53 80 276.4

414.6 1.44 1.5 2.94 27.2 OK 230.7 OK GI 80 4.8


BP-1906 GI 9.35 80 276.4

414.6 1.44 1.5 2.94 27.2 OK 230.7 OK GI 80 4.8


BP-2152 GI 20.56 80 275.9

413.9 1.44 1.5 2.94 27.2 OK 230.1 OK GI 80 4.8


BP-2173 GI 13.46 80 275.9

413.9 1.44 1.5 2.94 27.2 OK 230.1 OK GI 80 4.8


BP-2157 GI 35.71 80 275.8

413.7 1.44 1.5 2.94 27.2 OK 230.0 OK GI 80 4.8


BP-2468 GI 13.81 80 275.8

413.7 1.44 1.5 2.94 27.2 OK 230.0 OK GI 80 4.8


BP-2470 GI 6.85 80 275.8

413.7 1.44 1.5 2.94 27.2 OK 230.0 OK GI 80 4.8


BP-2066 GI 33.19 80 275.7

413.6 1.44 1.5 2.94 27.2 OK 229.9 OK GI 80 4.8


BP-2067 GI 21.84 80 275.7

413.6 1.44 1.5 2.94 27.2 OK 229.9 OK GI 80 4.8


BP-1703 GI 14.73 80 275.6

413.4 1.44 1.5 2.94 27.2 OK 229.8 OK GI 80 4.8


BP-2057 GI 27.04 80 275.5

413.3 1.44 1.5 2.94 27.2 OK 229.6 OK GI 80 4.8


BP-2073 GI 11.24 80 275.5

413.3 1.44 1.5 2.94 27.2 OK 229.6 OK GI 80 4.8


BP-2439 GI 39.49 80 275.3

413.0 1.44 1.5 2.94 27.2 OK 229.4 OK GI 80 4.8


BP-2447 GI 12.93 80 275.3

413.0 1.44 1.5 2.94 27.2 OK 229.4 OK GI 80 4.8


BP-1902 GI 6.74 80 275

412.5 1.43 1.5 2.93 27.3 OK 229.0 OK GI 80 4.8


BP-2469 GI 12.44 80 275

412.5 1.43 1.5 2.93 27.3 OK 229.0 OK GI 80 4.8

25




per IS 3589:2001)


l Length (m)

Diameter (mm)

P_Max (m H2O)

1.5*Pmax

t=PD/2s

Allowance for

corrosion (mm)


(mm)

D/t

If D/t < 300

thickness is OK

Collapsing

Pressure (Pv)

(kg/cm2)=

If Pv > 0.34


Material

Diameter (mm)

Thickness (mm)


BP-1905 GI 45.51 80 274.6

411.9 1.43 1.5 2.93 27.3 OK 228.5 OK GI 80 4.8


BP-440 GI 3.48 80 274.5

411.8 1.43 1.5 2.93 27.3 OK 228.4 OK GI 80 4.8


BP-2442 GI 16.54 80 274.2

411.3 1.43 1.5 2.93 27.3 OK 228.0 OK GI 80 4.8


BP-1702 GI 44.19 80 274

411.0 1.43 1.5 2.93 27.3 OK 227.8 OK GI 80 4.8


BP-2174 GI 5.04 80 273.7

410.6 1.43 1.5 2.93 27.3 OK 227.4 OK GI 80 4.8


BP-439 GI 7.8 80 273.5

410.3 1.43 1.5 2.93 27.3 OK 227.2 OK GI 80 4.8


BP-2156 GI 66.84 80 273.3

410.0 1.43 1.5 2.93 27.3 OK 226.9 OK GI 80 4.8


BP-390 GI 35.19 80 273

409.5 1.42 1.5 2.92 27.4 OK 226.6 OK GI 80 4.8


BP-2473 GI 5.28 80 272.9

409.4 1.42 1.5 2.92 27.4 OK 226.5 OK GI 80 4.8


BP-150 GI 36.56 80 272.9

409.4 1.42 1.5 2.92 27.4 OK 226.5 OK GI 80 4.8


BP-146 GI 20.81 80 272.7

409.1 1.42 1.5 2.92 27.4 OK 226.2 OK GI 80 4.8


BP-2160 GI 32.26 80 272.5

408.8 1.42 1.5 2.92 27.4 OK 226.0 OK GI 80 4.8


BP-2053 GI 12.42 80 272.4

408.6 1.42 1.5 2.92 27.4 OK 225.9 OK GI 80 4.8


BP-1901 GI 35.81 80 272.3

408.5 1.42 1.5 2.92 27.4 OK 225.7 OK GI 80 4.8


BP-2056 GI 13.2 80 272.3

408.5 1.42 1.5 2.92 27.4 OK 225.7 OK GI 80 4.8


BP-2441 GI 12.67 80 272

408.0 1.42 1.5 2.92 27.4 OK 225.4 OK GI 80 4.8


BP-151 GI 6.47 80 272

408.0 1.42 1.5 2.92 27.4 OK 225.4 OK GI 80 4.8

26




per IS 3589:2001)


l Length (m)

Diameter (mm)

P_Max (m H2O)

1.5*Pmax

t=PD/2s

Allowance for

corrosion (mm)


(mm)

D/t

If D/t < 300

thickness is OK

Collapsing

Pressure (Pv)

(kg/cm2)=

If Pv > 0.34


Material

Diameter (mm)

Thickness (mm)


BP-2373 GI 5.98 80 271.4

407.1 1.42 1.5 2.92 27.4 OK 224.6 OK GI 80 4.8


BP-2472 GI 43.33 80 271.4

407.1 1.42 1.5 2.92 27.4 OK 224.6 OK GI 80 4.8


BP-392 GI 69.1 80 271.4

407.1 1.42 1.5 2.92 27.4 OK 224.6 OK GI 80 4.8


BP-169 GI 10.31 80 271.2

406.8 1.41 1.5 2.91 27.4 OK 224.4 OK GI 80 4.8


BP-170 GI 16.92 80 271.2

406.8 1.41 1.5 2.91 27.4 OK 224.4 OK GI 80 4.8


BP-386 GI 58.67 80 271.2

406.8 1.41 1.5 2.91 27.4 OK 224.4 OK GI 80 4.8


BP-2055 GI 30.52 80 271

406.5 1.41 1.5 2.91 27.5 OK 224.2 OK GI 80 4.8


BP-2159 GI 50.62 80 270.8

406.2 1.41 1.5 2.91 27.5 OK 223.9 OK GI 80 4.8


BP-2168 GI 13.3 80 270.7

406.1 1.41 1.5 2.91 27.5 OK 223.8 OK GI 80 4.8


BP-1880 GI 12.23 80 270.6

405.9 1.41 1.5 2.91 27.5 OK 223.7 OK GI 80 4.8


BP-209 GI 6.35 80 270.5

405.8 1.41 1.5 2.91 27.5 OK 223.6 OK GI 80 4.8


BP-2175 GI 8.57 80 270.5

405.8 1.41 1.5 2.91 27.5 OK 223.6 OK GI 80 4.8


BP-1634 GI 98.35 80 269.9

404.9 1.41 1.5 2.91 27.5 OK 222.8 OK GI 80 4.8


BP-1635 GI 98.35 80 269.9

404.9 1.41 1.5 2.91 27.5 OK 222.8 OK GI 80 4.8


BP-1744 GI 21.74 80 269.9

404.9 1.41 1.5 2.91 27.5 OK 222.8 OK GI 80 4.8


BP-1751 GI 17.58 80 269.9

404.9 1.41 1.5 2.91 27.5 OK 222.8 OK GI 80 4.8


BP-1752 GI 17.86 80 269.9

404.9 1.41 1.5 2.91 27.5 OK 222.8 OK GI 80 4.8

27




per IS 3589:2001)


l Length (m)

Diameter (mm)

P_Max (m H2O)

1.5*Pmax

t=PD/2s

Allowance for

corrosion (mm)


(mm)

D/t

If D/t < 300

thickness is OK

Collapsing

Pressure (Pv)

(kg/cm2)=

If Pv > 0.34


Material

Diameter (mm)

Thickness (mm)


BP-1743 GI 76.79 80 269.9

404.9 1.41 1.5 2.91 27.5 OK 222.8 OK GI 80 4.8


BP-1745 GI 8.91 80 269.9

404.9 1.41 1.5 2.91 27.5 OK 222.8 OK GI 80 4.8


BP-1753 GI 23.36 80 269.9

404.9 1.41 1.5 2.91 27.5 OK 222.8 OK GI 80 4.8


BP-1748 GI 13.33 80 269.9

404.9 1.41 1.5 2.91 27.5 OK 222.8 OK GI 80 4.8


BP-1749 GI 4.24 80 269.9

404.9 1.41 1.5 2.91 27.5 OK 222.8 OK GI 80 4.8


BP-1750 GI 7.65 80 269.9

404.9 1.41 1.5 2.91 27.5 OK 222.8 OK GI 80 4.8


BP-1754 GI 13.84 80 269.9

404.9 1.41 1.5 2.91 27.5 OK 222.8 OK GI 80 4.8


BP-1755 GI 16.78 80 269.9

404.9 1.41 1.5 2.91 27.5 OK 222.8 OK GI 80 4.8


BP-1746 GI 66.88 80 269.9

404.9 1.41 1.5 2.91 27.5 OK 222.8 OK GI 80 4.8


BP-1756 GI 16.23 80 269.9

404.9 1.41 1.5 2.91 27.5 OK 222.8 OK GI 80 4.8


BP-1757 GI 6.46 80 269.9

404.9 1.41 1.5 2.91 27.5 OK 222.8 OK GI 80 4.8


BP-1758 GI 18.86 80 269.9

404.9 1.41 1.5 2.91 27.5 OK 222.8 OK GI 80 4.8


BP-1759 GI 5.88 80 269.9

404.9 1.41 1.5 2.91 27.5 OK 222.8 OK GI 80 4.8


BP-1944 GI 11.24 80 269.9

404.9 1.41 1.5 2.91 27.5 OK 222.8 OK GI 80 4.8


BP-1945 GI 9.61 80 269.9

404.9 1.41 1.5 2.91 27.5 OK 222.8 OK GI 80 4.8


BP-1747 GI 17.49 80 269.9

404.9 1.41 1.5 2.91 27.5 OK 222.8 OK GI 80 4.8


BP-1761 GI 49.35 80 269.7

404.6 1.41 1.5 2.91 27.5 OK 222.6 OK GI 80 4.8

28




per IS 3589:2001)


l Length (m)

Diameter (mm)

P_Max (m H2O)

1.5*Pmax

t=PD/2s

Allowance for

corrosion (mm)


(mm)

D/t

If D/t < 300

thickness is OK

Collapsing

Pressure (Pv)

(kg/cm2)=

If Pv > 0.34


Material

Diameter (mm)

Thickness (mm)


BP-2440 GI 21.64 80 269.5

404.3 1.41 1.5 2.91 27.5 OK 222.4 OK GI 80 4.8


BP-2146 GI 37.55 80 268.9

403.4 1.40 1.5 2.90 27.6 OK 221.6 OK GI 80 4.8


BP-2200 GI 17.3 80 268.9

403.4 1.40 1.5 2.90 27.6 OK 221.6 OK GI 80 4.8


BP-1763 GI 41.97 80 268.6

402.9 1.40 1.5 2.90 27.6 OK 221.3 OK GI 80 4.8


BP-248 GI 5.05 80 268.5

402.8 1.40 1.5 2.90 27.6 OK 221.2 OK GI 80 4.8


BP-387 GI 29.96 80 268.1

402.2 1.40 1.5 2.90 27.6 OK 220.7 OK GI 80 4.8


BP-1871 GI 5.55 80 268.1

402.2 1.40 1.5 2.90 27.6 OK 220.7 OK GI 80 4.8


BP-2372 GI 50.3 80 268

402.0 1.40 1.5 2.90 27.6 OK 220.6 OK GI 80 4.8


BP-2164 GI 42 80 267.9

401.9 1.40 1.5 2.90 27.6 OK 220.5 OK GI 80 4.8


BP-1760 GI 14.72 80 267.9

401.9 1.40 1.5 2.90 27.6 OK 220.5 OK GI 80 4.8


BP-2158 GI 23.71 80 267.8

401.7 1.40 1.5 2.90 27.6 OK 220.3 OK GI 80 4.8


BP-144 GI 18.08 80 267.6

401.4 1.40 1.5 2.90 27.6 OK 220.1 OK GI 80 4.8


BP-145 GI 96.72 80 267.6

401.4 1.40 1.5 2.90 27.6 OK 220.1 OK GI 80 4.8


BP-247 GI 8.48 80 266.8

400.2 1.39 1.5 2.89 27.7 OK 219.1 OK GI 80 4.8


BP-207 GI 52.16 80 266.8

400.2 1.39 1.5 2.89 27.7 OK 219.1 OK GI 80 4.8


BP-2322 GI 17.48 80 266.4

399.6 1.39 1.5 2.89 27.7 OK 218.7 OK GI 80 4.8


BP-428 GI 17.27 80 266.4

399.6 1.39 1.5 2.89 27.7 OK 218.7 OK GI 80 4.8

29




per IS 3589:2001)


l Length (m)

Diameter (mm)

P_Max (m H2O)

1.5*Pmax

t=PD/2s

Allowance for

corrosion (mm)


(mm)

D/t

If D/t < 300

thickness is OK

Collapsing

Pressure (Pv)

(kg/cm2)=

If Pv > 0.34


Material

Diameter (mm)

Thickness (mm)


BP-2167 GI 17.98 80 266.4

399.6 1.39 1.5 2.89 27.7 OK 218.7 OK GI 80 4.8


BP-430 GI 3.16 80 266

399.0 1.39 1.5 2.89 27.7 OK 218.2 OK GI 80 4.8


BP-1879 GI 10.45 80 265.8

398.7 1.39 1.5 2.89 27.7 OK 218.0 OK GI 80 4.8


BP-2151 GI 8.82 80 265

397.5 1.38 1.5 2.88 27.8 OK 217.0 OK GI 80 4.8


BP-184 GI 19.93 80 264.9

397.4 1.38 1.5 2.88 27.8 OK 216.9 OK GI 80 4.8


BP-429 GI 61.4 80 264.7

397.1 1.38 1.5 2.88 27.8 OK 216.7 OK GI 80 4.8


BP-1700 GI 29.15 80 264.4

396.6 1.38 1.5 2.88 27.8 OK 216.3 OK GI 80 4.8


BP-2085 GI 7.81 80 264.3

396.5 1.38 1.5 2.88 27.8 OK 216.2 OK GI 80 4.8


BP-2170 GI 6.17 80 264.2

396.3 1.38 1.5 2.88 27.8 OK 216.1 OK GI 80 4.8


BP-84 GI 12.68 80 264

396.0 1.38 1.5 2.88 27.8 OK 215.8 OK GI 80 4.8


BP-177 GI 16.57 80 263.9

395.9 1.38 1.5 2.88 27.8 OK 215.7 OK GI 80 4.8


BP-2163 GI 25.35 80 263.6

395.4 1.38 1.5 2.88 27.8 OK 215.4 OK GI 80 4.8


BP-2165 GI 26.11 80 263.6

395.4 1.38 1.5 2.88 27.8 OK 215.4 OK GI 80 4.8


BP-2065 GI 39.89 80 263.4

395.1 1.37 1.5 2.87 27.8 OK 215.1 OK GI 80 4.8


BP-2096 GI 24.71 80 263.4

395.1 1.37 1.5 2.87 27.8 OK 215.1 OK GI 80 4.8


BP-2097 GI 49.02 80 263.4

395.1 1.37 1.5 2.87 27.8 OK 215.1 OK GI 80 4.8


BP-1686 GI 17.82 80 263.3

395.0 1.37 1.5 2.87 27.8 OK 215.0 OK GI 80 4.8

30




per IS 3589:2001)


l Length (m)

Diameter (mm)

P_Max (m H2O)

1.5*Pmax

t=PD/2s

Allowance for

corrosion (mm)


(mm)

D/t

If D/t < 300

thickness is OK

Collapsing

Pressure (Pv)

(kg/cm2)=

If Pv > 0.34


Material

Diameter (mm)

Thickness (mm)


BP-2086 GI 16.43 80 262.7

394.1 1.37 1.5 2.87 27.9 OK 214.3 OK GI 80 4.8


BP-2379 GI 4.09 80 262.5

393.8 1.37 1.5 2.87 27.9 OK 214.1 OK GI 80 4.8


BP-2166 GI 29.85 80 262.4

393.6 1.37 1.5 2.87 27.9 OK 214.0 OK GI 80 4.8


BP-1446 GI 20.65 80 262.3

393.5 1.37 1.5 2.87 27.9 OK 213.9 OK GI 80 4.8


BP-183 GI 11.48 80 262.2

393.3 1.37 1.5 2.87 27.9 OK 213.7 OK GI 80 4.8


BP-1699 GI 24.13 80 262.1

393.2 1.37 1.5 2.87 27.9 OK 213.6 OK GI 80 4.8


BP-162 GI 12.99 80 261.7

392.6 1.37 1.5 2.87 27.9 OK 213.2 OK GI 80 4.8


BP-2155 GI 24.29 80 261.5

392.3 1.36 1.5 2.86 27.9 OK 212.9 OK GI 80 4.8


BP-2510 GI 2.49 80 261.5

392.3 1.36 1.5 2.86 27.9 OK 212.9 OK GI 80 4.8


BP-2378 GI 49.76 80 261.3

392.0 1.36 1.5 2.86 27.9 OK 212.7 OK GI 80 4.8


BP-2169 GI 7.56 80 261

391.5 1.36 1.5 2.86 28.0 OK 212.3 OK GI 80 4.8


BP-2171 GI 9.01 80 261

391.5 1.36 1.5 2.86 28.0 OK 212.3 OK GI 80 4.8


BP-2321 GI 8.56 80 260.7

391.1 1.36 1.5 2.86 28.0 OK 212.0 OK GI 80 4.8


BP-2323 GI 14.63 80 260.7

391.1 1.36 1.5 2.86 28.0 OK 212.0 OK GI 80 4.8


BP-82 GI 49.5 80 260.7

391.1 1.36 1.5 2.86 28.0 OK 212.0 OK GI 80 4.8


BP-2509 GI 4.24 80 260

390.0 1.36 1.5 2.86 28.0 OK 211.2 OK GI 80 4.8


BP-393 GI 67.33 80 259.6

389.4 1.35 1.5 2.85 28.0 OK 210.7 OK GI 80 4.8

31




per IS 3589:2001)


l Length (m)

Diameter (mm)

P_Max (m H2O)

1.5*Pmax

t=PD/2s

Allowance for

corrosion (mm)


(mm)

D/t

If D/t < 300

thickness is OK

Collapsing

Pressure (Pv)

(kg/cm2)=

If Pv > 0.34


Material

Diameter (mm)

Thickness (mm)


BP-2397 GI 3.42 80 259.5

389.3 1.35 1.5 2.85 28.0 OK 210.6 OK GI 80 4.8


BP-182 GI 17.76 80 259.4

389.1 1.35 1.5 2.85 28.0 OK 210.5 OK GI 80 4.8


BP-2320 GI 25.65 80 259.3

389.0 1.35 1.5 2.85 28.0 OK 210.4 OK GI 80 4.8


BP-2208 GI 4.17 80 259

388.5 1.35 1.5 2.85 28.1 OK 210.0 OK GI 80 4.8


BP-178 GI 17.54 80 258.7

388.1 1.35 1.5 2.85 28.1 OK 209.7 OK GI 80 4.8


BP-2084 GI 59.84 80 258.7

388.1 1.35 1.5 2.85 28.1 OK 209.7 OK GI 80 4.8


BP-2201 GI 11.64 80 258.4

387.6 1.35 1.5 2.85 28.1 OK 209.3 OK GI 80 4.8


BP-2162 GI 4.68 80 258.3

387.5 1.35 1.5 2.85 28.1 OK 209.2 OK GI 80 4.8


BP-1444 GI 13.92 80 258.1

387.2 1.35 1.5 2.85 28.1 OK 209.0 OK GI 80 4.8


BP-2371 GI 3.98 80 258.1

387.2 1.35 1.5 2.85 28.1 OK 209.0 OK GI 80 4.8


BP-2204 GI 4.64 80 258.1

387.2 1.35 1.5 2.85 28.1 OK 209.0 OK GI 80 4.8


BP-2150 GI 25.78 80 257.9

386.9 1.35 1.5 2.85 28.1 OK 208.8 OK GI 80 4.8


BP-2396 GI 14.83 80 257.9

386.9 1.35 1.5 2.85 28.1 OK 208.8 OK GI 80 4.8


BP-1693 GI 27.99 80 257.7

386.6 1.34 1.5 2.84 28.1 OK 208.5 OK GI 80 4.8


BP-2206 GI 10.45 80 257.4

386.1 1.34 1.5 2.84 28.1 OK 208.2 OK GI 80 4.8


BP-2207 GI 13.85 80 257.4

386.1 1.34 1.5 2.84 28.1 OK 208.2 OK GI 80 4.8


BP-127 GI 73.03 80 257

385.5 1.34 1.5 2.84 28.2 OK 207.7 OK GI 80 4.8

32




per IS 3589:2001)


l Length (m)

Diameter (mm)

P_Max (m H2O)

1.5*Pmax

t=PD/2s

Allowance for

corrosion (mm)


(mm)

D/t

If D/t < 300

thickness is OK

Collapsing

Pressure (Pv)

(kg/cm2)=

If Pv > 0.34


Material

Diameter (mm)

Thickness (mm)


BP-196 GI 3.99 80 257

385.5 1.34 1.5 2.84 28.2 OK 207.7 OK GI 80 4.8


BP-389 GI 27.47 80 256.9

385.4 1.34 1.5 2.84 28.2 OK 207.6 OK GI 80 4.8


BP-2161 GI 6.67 80 256.8

385.2 1.34 1.5 2.84 28.2 OK 207.5 OK GI 80 4.8


BP-83 GI 5.63 80 256.7

385.1 1.34 1.5 2.84 28.2 OK 207.4 OK GI 80 4.8


BP-2205 GI 18.83 80 256.6

384.9 1.34 1.5 2.84 28.2 OK 207.3 OK GI 80 4.8


BP-181 GI 14.06 80 256

384.0 1.34 1.5 2.84 28.2 OK 206.6 OK GI 80 4.8


BP-180 GI 26.99 80 255.9

383.9 1.33 1.5 2.83 28.2 OK 206.5 OK GI 80 4.8


BP-2395 GI 4.73 80 255.7

383.6 1.33 1.5 2.83 28.2 OK 206.2 OK GI 80 4.8


BP-2370 GI 22.73 80 255.6

383.4 1.33 1.5 2.83 28.2 OK 206.1 OK GI 80 4.8


BP-1443 GI 17.12 80 255.2

382.8 1.33 1.5 2.83 28.3 OK 205.7 OK GI 80 4.8


BP-1445 GI 28.75 80 255.2

382.8 1.33 1.5 2.83 28.3 OK 205.7 OK GI 80 4.8


BP-176 GI 22.62 80 254.9

382.4 1.33 1.5 2.83 28.3 OK 205.3 OK GI 80 4.8


BP-79 GI 70.44 80 254.8

382.2 1.33 1.5 2.83 28.3 OK 205.2 OK GI 80 4.8


BP-1120 GI 39.77 80 254.8

382.2 1.33 1.5 2.83 28.3 OK 205.2 OK GI 80 4.8


BP-160 GI 7.38 80 254.7

382.1 1.33 1.5 2.83 28.3 OK 205.1 OK GI 80 4.8


BP-2203 GI 16.66 80 254.7

382.1 1.33 1.5 2.83 28.3 OK 205.1 OK GI 80 4.8


BP-195 GI 15.17 80 254.7

382.1 1.33 1.5 2.83 28.3 OK 205.1 OK GI 80 4.8

33




per IS 3589:2001)


l Length (m)

Diameter (mm)

P_Max (m H2O)

1.5*Pmax

t=PD/2s

Allowance for

corrosion (mm)


(mm)

D/t

If D/t < 300

thickness is OK

Collapsing

Pressure (Pv)

(kg/cm2)=

If Pv > 0.34


Material

Diameter (mm)

Thickness (mm)


BP-2202 GI 18.23 80 254.3

381.5 1.33 1.5 2.83 28.3 OK 204.7 OK GI 80 4.8


BP-1694 GI 24.12 80 254

381.0 1.32 1.5 2.82 28.3 OK 204.3 OK GI 80 4.8


BP-1698 GI 5.99 80 253.9

380.9 1.32 1.5 2.82 28.3 OK 204.2 OK GI 80 4.8


BP-161 GI 14.17 80 253.5

380.3 1.32 1.5 2.82 28.3 OK 203.7 OK GI 80 4.8


BP-1731 GI

112.85 80 253.3

380.0 1.32 1.5 2.82 28.4 OK 203.5 OK GI 80 4.8


BP-2154 GI 13.4 80 253.1

379.7 1.32 1.5 2.82 28.4 OK 203.3 OK GI 80 4.8


BP-2394 GI 43.73 80 253

379.5 1.32 1.5 2.82 28.4 OK 203.2 OK GI 80 4.8


BP-2083 GI 24.13 80 252.6

378.9 1.32 1.5 2.82 28.4 OK 202.7 OK GI 80 4.8


BP-1697 GI 19.25 80 252.6

378.9 1.32 1.5 2.82 28.4 OK 202.7 OK GI 80 4.8


BP-1696 GI 21 80 252.6

378.9 1.32 1.5 2.82 28.4 OK 202.7 OK GI 80 4.8


BP-397 GI 79.68 80 252.6

378.9 1.32 1.5 2.82 28.4 OK 202.7 OK GI 80 4.8


BP-1865 GI 27.77 80 251.1

376.7 1.31 1.5 2.81 28.5 OK 201.1 OK GI 80 4.8


BP-2078 GI 41.79 80 250.8

376.2 1.31 1.5 2.81 28.5 OK 200.7 OK GI 80 4.8


BP-388 GI 12.05 80 250.7

376.1 1.31 1.5 2.81 28.5 OK 200.6 OK GI 80 4.8


BP-391 GI 12.67 80 250.7

376.1 1.31 1.5 2.81 28.5 OK 200.6 OK GI 80 4.8


BP-2319 GI 21.23 80 250.6

375.9 1.31 1.5 2.81 28.5 OK 200.5 OK GI 80 4.8


BP-2063 GI 12.75 80 250.3

375.5 1.31 1.5 2.81 28.5 OK 200.2 OK GI 80 4.8

34




per IS 3589:2001)


l Length (m)

Diameter (mm)

P_Max (m H2O)

1.5*Pmax

t=PD/2s

Allowance for

corrosion (mm)


(mm)

D/t

If D/t < 300

thickness is OK

Collapsing

Pressure (Pv)

(kg/cm2)=

If Pv > 0.34


Material

Diameter (mm)

Thickness (mm)


BP-2172 GI 5.27 80 250.1

375.2 1.30 1.5 2.80 28.5 OK 199.9 OK GI 80 4.8


BP-2081 GI 33.43 80 249.5

374.3 1.30 1.5 2.80 28.6 OK 199.3 OK GI 80 4.8


BP-415 GI 1.94 80 249.2

373.8 1.30 1.5 2.80 28.6 OK 198.9 OK GI 80 4.8


BP-2149 GI 22.06 80 249.2

373.8 1.30 1.5 2.80 28.6 OK 198.9 OK GI 80 4.8


BP-414 GI

102.51 80 248.7

373.1 1.30 1.5 2.80 28.6 OK 198.4 OK GI 80 4.8


BP-2182 GI 23.2 80 248.5

372.8 1.30 1.5 2.80 28.6 OK 198.2 OK GI 80 4.8


BP-179 GI 12.82 80 247.8

371.7 1.29 1.5 2.79 28.6 OK 197.4 OK GI 80 4.8


BP-1695 GI 5.28 80 247.1

370.7 1.29 1.5 2.79 28.7 OK 196.6 OK GI 80 4.8


BP-2082 GI 25.78 80 246.7

370.1 1.29 1.5 2.79 28.7 OK 196.2 OK GI 80 4.8


BP-2211 GI 12.8 80 246.6

369.9 1.29 1.5 2.79 28.7 OK 196.1 OK GI 80 4.8


BP-1859 GI 31.04 80 246.3

369.5 1.28 1.5 2.78 28.7 OK 195.7 OK GI 80 4.8


BP-125 GI 30.57 80 246.1

369.2 1.28 1.5 2.78 28.7 OK 195.5 OK GI 80 4.8


BP-1730 GI 14.14 80 245.6

368.4 1.28 1.5 2.78 28.8 OK 195.0 OK GI 80 4.8


BP-129 GI 7.21 80 245.3

368.0 1.28 1.5 2.78 28.8 OK 194.6 OK GI 80 4.8


BP-2061 GI 21.09 80 244.3

366.5 1.27 1.5 2.77 28.8 OK 193.5 OK GI 80 4.8


BP-2062 GI 32.36 80 244.3

366.5 1.27 1.5 2.77 28.8 OK 193.5 OK GI 80 4.8


BP-2080 GI 28.26 80 243.8

365.7 1.27 1.5 2.77 28.9 OK 193.0 OK GI 80 4.8

35




per IS 3589:2001)


l Length (m)

Diameter (mm)

P_Max (m H2O)

1.5*Pmax

t=PD/2s

Allowance for

corrosion (mm)


(mm)

D/t

If D/t < 300

thickness is OK

Collapsing

Pressure (Pv)

(kg/cm2)=

If Pv > 0.34


Material

Diameter (mm)

Thickness (mm)


BP-157 GI 5.2 80 243.5

365.3 1.27 1.5 2.77 28.9 OK 192.7 OK GI 80 4.8


BP-1864 GI 80.13 80 243.4

365.1 1.27 1.5 2.77 28.9 OK 192.6 OK GI 80 4.8


BP-2079 GI 42.75 80 243.4

365.1 1.27 1.5 2.77 28.9 OK 192.6 OK GI 80 4.8


BP-2143 GI 28.31 80 243.3

365.0 1.27 1.5 2.77 28.9 OK 192.4 OK GI 80 4.8


BP-126 GI 17.33 80 242.9

364.4 1.27 1.5 2.77 28.9 OK 192.0 OK GI 80 4.8


BP-2210 GI 5.34 80 242.8

364.2 1.27 1.5 2.77 28.9 OK 191.9 OK GI 80 4.8


BP-77 GI 58.26 80 242.1

363.2 1.26 1.5 2.76 29.0 OK 191.1 OK GI 80 4.8


BP-1672 GI 5.89 80 241.7

362.6 1.26 1.5 2.76 29.0 OK 190.7 OK GI 80 4.8


BP-1923 GI 66.87 80 241.5

362.3 1.26 1.5 2.76 29.0 OK 190.5 OK GI 80 4.8


BP-1448 GI 40.39 80 241.3

362.0 1.26 1.5 2.76 29.0 OK 190.3 OK GI 80 4.8


BP-1449 GI 58.64 80 241.3

362.0 1.26 1.5 2.76 29.0 OK 190.3 OK GI 80 4.8


BP-1671 GI 44.87 80 240.4

360.6 1.25 1.5 2.75 29.0 OK 189.3 OK GI 80 4.8


BP-2393 GI 5.57 80 240.2

360.3 1.25 1.5 2.75 29.1 OK 189.1 OK GI 80 4.8


BP-2145 GI 16.63 80 239.8

359.7 1.25 1.5 2.75 29.1 OK 188.7 OK GI 80 4.8


BP-2147 GI 11.49 80 239.8

359.7 1.25 1.5 2.75 29.1 OK 188.7 OK GI 80 4.8


BP-2209 GI 13.74 80 239.4

359.1 1.25 1.5 2.75 29.1 OK 188.2 OK GI 80 4.8


BP-1121 GI

129.01 80 239.1

358.7 1.25 1.5 2.75 29.1 OK 187.9 OK GI 80 4.8

36




per IS 3589:2001)


l Length (m)

Diameter (mm)

P_Max (m H2O)

1.5*Pmax

t=PD/2s

Allowance for

corrosion (mm)


(mm)

D/t

If D/t < 300

thickness is OK

Collapsing

Pressure (Pv)

(kg/cm2)=

If Pv > 0.34


Material

Diameter (mm)

Thickness (mm)


BP-394 GI 31.87 80 238

357.0 1.24 1.5 2.74 29.2 OK 186.7 OK GI 80 4.8


BP-2377 GI 4.94 80 237.7

356.6 1.24 1.5 2.74 29.2 OK 186.4 OK GI 80 4.8


BP-2374 GI

151.67 80 237.3

356.0 1.24 1.5 2.74 29.2 OK 186.0 OK GI 80 4.8


BP-2375 GI 9.57 80 237.3

356.0 1.24 1.5 2.74 29.2 OK 186.0 OK GI 80 4.8


BP-2376 GI 15.76 80 237.2

355.8 1.24 1.5 2.74 29.2 OK 185.9 OK GI 80 4.8


BP-1947 GI 9.29 80 236.6

354.9 1.23 1.5 2.73 29.3 OK 185.2 OK GI 80 4.8


BP-118 GI 18.74 80 236.1

354.2 1.23 1.5 2.73 29.3 OK 184.7 OK GI 80 4.8


BP-2058 GI 60.49 80 235.8

353.7 1.23 1.5 2.73 29.3 OK 184.4 OK GI 80 4.8


BP-2076 GI 13.82 80 235.2

352.8 1.23 1.5 2.73 29.3 OK 183.8 OK GI 80 4.8


BP-396 GI 93.45 80 234.5

351.8 1.22 1.5 2.72 29.4 OK 183.0 OK GI 80 4.8


BP-2077 GI 5.92 80 234.5

351.8 1.22 1.5 2.72 29.4 OK 183.0 OK GI 80 4.8


BP-2317 GI 41.85 80 234.3

351.5 1.22 1.5 2.72 29.4 OK 182.8 OK GI 80 4.8


BP-2075 GI 12.11 80 234.3

351.5 1.22 1.5 2.72 29.4 OK 182.8 OK GI 80 4.8


BP-2134 GI 8.41 80 233

349.5 1.22 1.5 2.72 29.5 OK 181.5 OK GI 80 4.8


BP-1119 GI 51.93 80 232.4

348.6 1.21 1.5 2.71 29.5 OK 180.8 OK GI 80 4.8


BP-119 GI 51.92 80 232.2

348.3 1.21 1.5 2.71 29.5 OK 180.6 OK GI 80 4.8


BP-1946 GI 59.98 80 231.5

347.3 1.21 1.5 2.71 29.5 OK 179.9 OK GI 80 4.8

37




per IS 3589:2001)


l Length (m)

Diameter (mm)

P_Max (m H2O)

1.5*Pmax

t=PD/2s

Allowance for

corrosion (mm)


(mm)

D/t

If D/t < 300

thickness is OK

Collapsing

Pressure (Pv)

(kg/cm2)=

If Pv > 0.34


Material

Diameter (mm)

Thickness (mm)


BP-2046 GI 21.54 80 231.2

346.8 1.21 1.5 2.71 29.6 OK 179.6 OK GI 80 4.8


BP-2392 GI 31.48 80 230.6

345.9 1.20 1.5 2.70 29.6 OK 179.0 OK GI 80 4.8


BP-2437 GI 18.55 80 230.2

345.3 1.20 1.5 2.70 29.6 OK 178.5 OK GI 80 4.8


BP-1670 GI 27.73 80 230.2

345.3 1.20 1.5 2.70 29.6 OK 178.5 OK GI 80 4.8


BP-2135 GI 10.05 80 228.9

343.4 1.19 1.5 2.69 29.7 OK 177.2 OK GI 80 4.8


BP-2136 GI 7.06 80 228.9

343.4 1.19 1.5 2.69 29.7 OK 177.2 OK GI 80 4.8


BP-1427 GI 27.04 80 228.5

342.8 1.19 1.5 2.69 29.7 OK 176.8 OK GI 80 4.8


BP-1428 GI 23.3 80 227.6

341.4 1.19 1.5 2.69 29.8 OK 175.9 OK GI 80 4.8


BP-2051 GI 15.47 80 227.5

341.3 1.19 1.5 2.69 29.8 OK 175.8 OK GI 80 4.8


BP-2113 GI 28.74 80 227

340.5 1.18 1.5 2.68 29.8 OK 175.3 OK GI 80 4.8


BP-2141 GI 7.63 80 225.2

337.8 1.17 1.5 2.67 29.9 OK 173.4 OK GI 80 4.8


BP-1924 GI 6.12 80 225

337.5 1.17 1.5 2.67 29.9 OK 173.2 OK GI 80 4.8


BP-2137 GI 22.61 80 224.9

337.4 1.17 1.5 2.67 29.9 OK 173.1 OK GI 80 4.8


BP-110 GI

112.78 80 224.9

337.4 1.17 1.5 2.67 29.9 OK 173.1 OK GI 80 4.8


BP-1669 GI 13.63 80 224.4

336.6 1.17 1.5 2.67 30.0 OK 172.6 OK GI 80 4.8


BP-2052 GI 4.22 80 224.1

336.2 1.17 1.5 2.67 30.0 OK 172.3 OK GI 80 4.8


BP-2139 GI 18.41 80 224.1

336.2 1.17 1.5 2.67 30.0 OK 172.3 OK GI 80 4.8

38




per IS 3589:2001)


l Length (m)

Diameter (mm)

P_Max (m H2O)

1.5*Pmax

t=PD/2s

Allowance for

corrosion (mm)


(mm)

D/t

If D/t < 300

thickness is OK

Collapsing

Pressure (Pv)

(kg/cm2)=

If Pv > 0.34


Material

Diameter (mm)

Thickness (mm)


BP-2050 GI 20.7 80 223.3

335.0 1.16 1.5 2.66 30.0 OK 171.5 OK GI 80 4.8


BP-1876 GI

104.55 80 222.6

333.9 1.16 1.5 2.66 30.1 OK 170.8 OK GI 80 4.8


BP-1665 GI 42.91 80 222.2

333.3 1.16 1.5 2.66 30.1 OK 170.4 OK GI 80 4.8


BP-1441 GI 14.31 80 221

331.5 1.15 1.5 2.65 30.2 OK 169.2 OK GI 80 4.8


BP-2434 GI 23.53 80 220.9

331.4 1.15 1.5 2.65 30.2 OK 169.1 OK GI 80 4.8


BP-1729 GI 101.2 80 219.3

329.0 1.14 1.5 2.64 30.3 OK 167.5 OK GI 80 4.8


BP-1668 GI 17 80 219.3

329.0 1.14 1.5 2.64 30.3 OK 167.5 OK GI 80 4.8


BP-1488 GI 4.45 80 218.3

327.5 1.14 1.5 2.64 30.3 OK 166.5 OK GI 80 4.8


BP-1430 GI 10.55 80 217

325.5 1.13 1.5 2.63 30.4 OK 165.2 OK GI 80 4.8


BP-1667 GI 15.15 80 216.4

324.6 1.13 1.5 2.63 30.4 OK 164.6 OK GI 80 4.8


BP-1487 GI 20.79 80 215.7

323.6 1.13 1.5 2.63 30.5 OK 164.0 OK GI 80 4.8


BP-1429 GI 8.18 80 214.4

321.6 1.12 1.5 2.62 30.6 OK 162.7 OK GI 80 4.8


BP-1476 GI 3.24 80 214.4

321.6 1.12 1.5 2.62 30.6 OK 162.7 OK GI 80 4.8


BP-1790 GI 61.46 80 214.1

321.2 1.12 1.5 2.62 30.6 OK 162.4 OK GI 80 4.8


BP-103 GI 57.9 80 213.4

320.1 1.11 1.5 2.61 30.6 OK 161.7 OK GI 80 4.8


BP-1431 GI 5.92 80 213.2

319.8 1.11 1.5 2.61 30.6 OK 161.5 OK GI 80 4.8


BP-1475 GI 77.85 80 212.8

319.2 1.11 1.5 2.61 30.7 OK 161.1 OK GI 80 4.8

39




per IS 3589:2001)


l Length (m)

Diameter (mm)

P_Max (m H2O)

1.5*Pmax

t=PD/2s

Allowance for

corrosion (mm)


(mm)

D/t

If D/t < 300

thickness is OK

Collapsing

Pressure (Pv)

(kg/cm2)=

If Pv > 0.34


Material

Diameter (mm)

Thickness (mm)


BP-1847 GI 62.49 80 212.4

318.6 1.11 1.5 2.61 30.7 OK 160.8 OK GI 80 4.8


BP-1666 GI 16.31 80 211.7

317.6 1.10 1.5 2.60 30.7 OK 160.1 OK GI 80 4.8


BP-1438 GI 11.56 80 210.7

316.1 1.10 1.5 2.60 30.8 OK 159.1 OK GI 80 4.8


BP-1780 GI 23.24 80 210.5

315.8 1.10 1.5 2.60 30.8 OK 158.9 OK GI 80 4.8


BP-1777 GI 39.4 80 210.4

315.6 1.10 1.5 2.60 30.8 OK 158.8 OK GI 80 4.8


BP-106 GI 14.88 80 210.3

315.5 1.10 1.5 2.60 30.8 OK 158.7 OK GI 80 4.8


BP-2430 GI 28.53 80 209.3

314.0 1.09 1.5 2.59 30.9 OK 157.8 OK GI 80 4.8


BP-105 GI 13.81 80 209.2

3

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