SSSI Hollow Core Bar Nominal Outer Diameter Nominal Inner Diameter Area Weight Ultimate Strength TENSILE YIELD POINT GRADE
Part Number BAR SIZE in mm in mm [in2] [mm2] lbs / ft kg / m Kips kN Kips kN KSI
HC3823BRB38/231.5380.91230.996403.45119.153095.542596
HC5128BRB51/282.01511.34341.5810205.48188.8840155.169098
HC6343BRB63/432.48631.85472.1113607.210.7260.81160209.193099
HC7656BRB76/562.99762.28582.8818609.814.6310.21380247.3110086
HC10383BTB103/834.061033.27833.91252013.319.8359.71600287.7128074
HC10378BTB103/784.061033.11794.78308016.324.2445.11980357.4159075
HC10351STB103/514.061032.05528.54551029.143.3822.83660600.2267071
HC13092STB130/925.121303.7949.58618032.648.5899.94003720320375
HC13060STB130/605.121302.646714.79954050.374.91784.979401180.2525080
HC13575STB135/755.311353.238213.02840044.365.91213.95400971.1432075

The use of Hollow Core Bars, or Self-Drilling bars, is becoming more popular in the Deep Foundations field. From tiebacks and tiedowns in support of excavation applications, to piles in structural foundations, the use of Hollow Core Bars is expanding. Stressbar Steel Systems International, Inc. (SSSI), offers full-length threaded, high capacity, Hollow Core Bars, ranging from 1-1/2" (38 mm) nominal, to 5-5/16" (135 mm). Our Super Hollow Core Bars – T103/51, T135/75, & T130/60, have greater steel areas, which significantly increase pile load capacities. Consequently, they efficiently reduce the required number of drilled holes in any given site. SSSI’s Hollow Core Bars have been successfully used in projects accomplishing design compression load capacities up to 300 tons. As an added benefit, SSSI’s in-house engineering staff with over 25 years of experience in the Deep Foundations field can provide value engineering services for optimizing any of your upcoming projects.