Micro Piles

Bar Properties

DYWIDAG Reinforcing Steel ASTM A615 (Grade 75)

THREADBAR ® Designation Minimum Yield Stress ( fy) Minimum Yield Strength (fy * As) Nominal Cross Section Area (As) Nominal Weight Max. THREADBAR ® Diameter
in-lb mm ksi Mpa kips kN in2 mm2 lbs/ft kg/m in mm
#11 36 75 517 117.0 520 1.56 1006 5.31 7.91 1.61 41
#14 43 75 517 168.8 751 2.25 1452 7.65 11.39 1.86 47
#18 57 75 517 300.0 1335 4.00 2581 13.60 20.24 2.50 64
#20 63 80 552 392.8 1747 4.91 3168 16.70 24.65 2.72 69
NOTE: Maximum allowable temporary tension is 90% of yield strength. Mill length is 60 ft.

DYWI ® Drill  Hollow Bar

Bar Size Ultimate Load (fu * As) Yield Load (fy * As) Average Ultimate Stress (fy) Average Yield Stress (fy) Average Cross Section Area (As) Nominal Weight Maximum Bar Diameter
kips kN kips kN ksi Mpa ksi Mpa in2 mm2 lbs/ft kg/m in mm
R51L 124 550 101 450 90 620 74 510 1.38 890 4.70 7.00 2.00 51
R51N 180 800 142 630 109 750 86 590 1.66 1070 5.64 8.40 2.00 51
T76N 360 1600 270 1200 108 750 83 570 3.29 2120 11.21 16.70 3.00 76
T76S 427 1900 337 1500 100 690 80 550 4.26 2750 14.76 22.00 3.00 76
NOTE: Maximum allowable test load is 100% of yield load, Mill length is 3m (9-10 ft). Longer lengths are available on request
Average cross section area is based on average internal diameter. The ultimate and yield load capacity are measured values
The ultimate tensile and yield stress are calculated average values

DYWIDAG THREADBAR ® Prestressing Steel ASTM A722 (Grade 150)

THREADBAR ® Designation
(fu) 		Minimum Ultimate Stress Minimum Ultimate Strength
( fy * As) 		Nominal Cross Section Area Nominal Weight
(As) 		Max. THREADBAR ® Diameter
in mm ksi Mpa kips kN in2 mm2 lbs/ft kg/m in mm
1-1/4 32 150 1034 187.5 834 1.25 806 4.39 6.54 1.61 41
1-3/8 36 150 1034 237.0 1054 1.58 1019 5.56 8.28 1.63 41
1-3/4 46 150 1034 387.0 1721 2.58 1664 9.10 13.54 2.00 51
2-1/2 65 150 1034 774.0 3443 5.16 3331 18.22 27.10 2.71 69
NOTE: Maximum allowable temporary test tension is 80% ultimate strength. Mill lengths are 60 ft (1",1-1/4",1-3/8") and 45 ft (1-3/4",2-1/2")