STRUCTURAL PROPERTIES (GRADE 90)

CLASS A (Effective Prestress ≥ 4.0 N/mm2)

Outer Diameter D (mm) Wall Thickness (mm) Length L (m) PC Bar Area of Concrete (Cm2) Moment of Inertia Concrete (cm4) Calculated Bending Moment *Allowable Axial Load (t) Nominal Weight (kg/m) Effective Prestress (N/mm2)
Diam (mm) Num(pcs) Cracking(kN-m) Ultimate(kN-m)
300 60 6-12 7.1 6 452 35,572 21.8 34.8 98 118 4.9
350 60 6-12 7.1 6 547 61,333 29.5 40.6 120 142 4.2
400 65 6-12 7.1 8 684 102,081 44.3 61.8 149 178 4.4
450 70 6-12 7.1 10 836 159,984 62.4 86.9 182 217 4.5
500 80 6-12 7.1 12 1,056 247,701 84.9 115.9 231 274 4.3
600 90 6-12 9.0 12 1,442 497,636 153.8 222.5 313 375 5.0

CLASS B (Effective Prestress ≥ 5.0 N/mm2)

Outer Diameter D (mm) Wall Thickness (mm) Length L (m) PC Bar Area of Concrete (Cm2) Moment of Inertia Concrete (cm4) Calculated Bending Moment *Allowable Axial Load (t) Nominal Weight (kg/m) Effective Prestress (N/mm2)
Diam (mm) Num(pcs) Cracking (kN-m) Ultimate (kN-m)
250 55 6-12 7.1 6 337 17,925 15.3 29.0 72 88 6.4
300 60 6-12 7.1 7 452 35,733 23.7 40.6 97 118 5.7
350 70 6-15 7.1 9 616 66,195 36.6 60.8 133 160 5.4
400 80 6-15 9.0 8 804 113,242 57.1 98.9 173 209 5.8
450 80 6-15 9.0 8 930 171,848 71.5 111.2 201 242 5.1
500 90 6-15 9.0 10 1,159 262,827 98.8 154.5 251 301 5.1
600 100 6-36 9.0 14 1,571 527,019 167.7 259.6 339 408 5.3
700 110 6-36 9.0 20 2,039 952,225 271.2 432.6 438 530 5.7
800 120 6-50 9.0 24 2,564 1,580,220 386.5 593.3 552 666 5.5
900 130 6-50 10.7 20 3,145 2,475,735 526.1 782.1 679 818 5.3
1000 140 6-50 10.7 24 3,782 3,707,321 708.2 1042.8 817 983 5.3
1200 150 6-50 10.7 36 4,948 7,221,425 1231.9 1877.1 1060 1,286 6.0

CLASS C (Effective Prestress ≥ 7.0 N/mm2)

Outer Diameter D (mm) Wall Thickness (mm) Length L (m) PC Bar Area of Concrete (Cm2) Moment of Inertia Concrete (cm4) Calculated Bending Moment *Allowable Axial Load (t) Nominal Weight (kg/m) Effective Prestress (N/mm2)
Diam (mm) Num(pcs) Cracking (kN-m) Ultimate (kN-m)
250 55 6-15 7.1 7 337 18,032 16.7 33.8 71 88 7.3
300 60 6-15 7.1 10 452 36,306 29.0 57.9 95 118 7.7
350 70 6-15 9.0 8 616 67,074 44.5 86.5 130 160 7.3
400 80 6-15 9.0 12 804 115,143 71.7 148.3 168 209 8.2
450 80 6-15 9.0 12 930 174,320 89.6 166.9 196 242 7.3
500 90 6-15 9.0 15 1,159 267,219 123.8 231.7 244 301 7.2
600 100 6-36 9.0 20 1,571 534,095 204.4 370.8 331 408 7.7
700 110 6-50 9.0 28 2,039 963,990 329.4 605.6 428 530 7.7
700 110 6-50 10.7 20 2,039 961,708 329.4 608.3 428 666 7.7
800 120 6-50 10.7 24 2,564 11,602,610 465.4 834.3 540 818 7.3
900 130 6-50 10.7 28 3,145 2,507,200 634.0 1095.0 664 983 7.1
1000 140 6-50 10.7 36 3,782 3,766,195 884.4 1564.3 796 983 7.5
1200 150 6-50 10.7 46 4,948 7,310,564 1406.1 2398.6 1043 1286 7.3
1200 150 6-50 12.6 46 44,948 7,447,619 1625.0 3331.1 1024 1286 8.8

Notes***

In compliance with MS 1314 : Part4 : 2004-Precast Concrete Piles & modified to suit BS8004 : 1986-Code of Practice for Foundations and also BS8110 : 1985-Structural use of Concrete