Prestressed Concrete Strands/PC Strand
ASTM- A416/ A416M- 06 of SEVEN WIRE P.C STRAND
|
Grade |
Size-mm/(inch) |
Tolerance-mm/ (inch) |
Sectional Area-mm2/ (inch2)
|
Theoretical Weight- Kg/1000m-(lb/1000ft) |
Minimum Breaking Strength-Kn/ (lbf) |
Minimum Elongation L0≥610mm% |
Relaxation Value (1000hs) |
|
|
Initial Load 70% |
Initial Load 80% |
|||||||
|
1725(250) |
6.4(0.250) 7.9(0.313) 9.5(0.375) 11.1(0.438) 12.7(0.500) 15.2(0.600) |
±0.40 (±0.016) |
23.2(0.036) 37.4(0.058) 51.6(0.080) 69.7(0.108) 92.9(0.144) 139.4(0.216) |
182(122) 294(197) 405(272) 548(367) 730(490) 1094(737) |
40.0(9000) 64.5(14500) 89.0(20000) 120.1(27000) 160.1(36000) 240.2(54000) |
3.5 |
≤2.5% |
≤3.5% |
|
1860(270) |
9.53(0.375) 11.11(0.438) 12.7(0.500) 13.20(0.520) 14.29(0.563) 15.24(0.600) 17.78(0.700) |
+0.65 -0.15 (+0.026) (-0.006) |
54.8(0.085) 74.2(0.115) 98.7(0.153) 107.7(0.167) 123.9(0.192) 140.0(0.217) 189.7(0.294) |
432(290) 582(390) 775(520) 844(568) 970(651) 1102(740) 1487(1000) |
102.3(23000) 137.9(31000) 183.7(41300) 200.2(45000) 230.0(51700) 260.7(58600) 353.2(79400) |
≤3.5 |
≤2.5% |
≤3.5% |
BS5896-1980
|
Type of strand |
Size/mm |
Nominal Tensile Strength N/mm2 |
Nominal steel Area mm2 |
Nominal Mass g/m |
Tolerance on |
Specified characteristic breaking Load Kn |
||
|
Dia. mm |
Cross-sectional /mm2 |
Mass g/m |
||||||
|
7-wire standard |
15.2 12.5 |
1670 1770 |
138 93 |
1090 730 |
+0.4 -0.2 |
For all strands +4% -2% |
For all strands +4% -2% |
232 164 |
|
11.0 9.3 |
1770 1770 |
71 52 |
557 408 |
+0.3 -0.15 |
125 92 |
|||
|
7-wire super |
15.7 12.9 |
1770 1860 |
150 100 |
1180 785 |
+0.4 -0.2 |
265 186 |
||
|
11.3 9.6 8.0 |
1860 1860 1860 |
75 55 38 |
590 432 298 |
+0.3 -0.15 |
139 102 70 |
|||
|
7-wire drawn |
18.0 15.2 12.7 |
1700 1820 1860 |
223 165 112 |
1750 1290 890 |
+0.4 -0.2 |
380 300 209 |
||
Packing in coils with steel strips secured and water-proof compound
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