STRUCTURAL PROPERTIES (GRADE 80)

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) Area(cm2) Cracking (t-m) Ultimate (t-m)
300 60 6-12 7.1 6 2.40 452 34,608 2.1 3.5 85 118 4.9
350 60 6-12 7.1 6 2.40 547 59,925 2.8 4.1 104 142 4.1
400 65 6-12 7.1 8 3.20 684 99,577 4.2 6.3 129 178 4.4
450 70 6-12 7.1 10 4.00 836 155,956 6.0 8.9 158 217 4.5
500 80 6-12 7.1 12 4.80 1,056 241,199 8.1 11.8 200 274 4.3
600 90 6-12 9.0 12 7.68 1,442 483,427 14.7 22.7 270 375 4.9

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 (t-m) Ultimate (t-m)
250 55 6-12 7.1 6 337 17,921 15.0 29.0 63 88 6.4
300 60 6-12 7.1 7 452 35,724 23.1 40.6 86 118 5.7
350 70 6-15 7.1 9 616 66,068 35.6 60.8 117 160 5.4
400 80 6-15 9.0 8 804 113,006 55.7 98.9 152 209 5.8
450 80 6-15 9.0 8 930 171,421 69.6 111.2 178 242 5.1
500 90 6-15 9.0 10 1,159 262,769 96.2 154.5 221 301 5.1
600 100 6-36 9.0 14 1,571 526,009 163.2 259.6 299 408 5.3
700 110 6-36 9.0 20 2,039 948,845 265.1 432.6 386 530 5.8
800 120 6-50 9.0 24 2,564 1,577,018 376.3 593.3 487 666 5.5
900 130 6-50 10.7 20 3,145 2,470,925 511.9 782.1 599 818 5.3
1000 140 6-50 10.7 24 3,782 3,700,120 689.1 1042.8 720 983 5.3
1200 150 6-50 10.7 36 4,948 7,205,324 1200.4 1877.1 934 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 (t-m) Ultimate (t-m)
250 55 6-15 7.1 7 337 18,158 16.3 33.8 63 88 7.2
300 60 6-15 7.1 10 452 36,384 28.2 57.9 84 118 7.6
350 70 6-15 9.0 8 616 66,893 43.5 86.5 114 160 7.3
400 80 6-15 9.0 12 804 114,820 70.5 148.3 147 209 8.3
450 80 6-15 9.0 12 930 174,677 87.1 166.9 173 242 7.2
500 90 6-15 9.0 15 1,159 266,491 120.9 231.7 215 301 7.3
600 100 6-36 9.0 20 1,571 535,183 198.7 370.8 292 408 7.1
700 110 6-50 9.0 28 2,039 961,178 322.0 605.6 376 530 7.7
700 110 6-50 10.7 20 2,039 961,371 323.0 608.3 376 530 7.7
800 120 6-50 10.7 24 2,564 1,602,357 455.7 843.3 475 666 7.4
900 130 6-50 10.7 28 3,145 2,507,289 515.7 1095.0 585 818 7.1
1000 140 6-50 10.7 36 3,782 3,755,394 868.0 1564.3 699 983 7.5
1000 140 6-50 12.6 34 3,782 3,831,938 967.4 2051.9 688 983 8.6
1200 150 6-50 10.7 46 4,948 7,310,074 1376.5 2398.6 917 1286 7.3
1200 150 6-50 12.6 46 4,948 7,446,939 1594.9 3331.3 898 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