Ads
related to: 1/2 j bolts for metal buildings
Search results
Results From The WOW.Com Content Network
A study of the effect of torquing two samples, one lubricated and the other unlubricated, 1/2 in.- 20 UNF bolts to 800 lb-in, produced the same mean preload of 7700 lbf. The preloads for the unlubricated bolt sample had a standard deviation from the mean value of 1100 lbf, whereas the lubricated sample had a standard deviation of 680 lbf.
ASTM A325 is an ASTM International standard for heavy hex structural bolts, titled Standard Specification for Structural Bolts, Steel, Heat Treated, 120/105 ksi Minimum Tensile Strength. It defines mechanical properties for bolts that range from 1 ⁄ 2 to 1 + 1 ⁄ 2 inches (13 to 38 mm) in diameter. [1]
The screw itself should be drilled a minimum of 1" into the concrete to hold effectively and a maximum of 1-3/4" or the threads will wear and will lose holding power. Ideally 1-1/4" to 1-1/2" of screw thread in the concrete. [1] So for example, if a 1/2" board is being screwed onto the concrete, a 1-3/4" to 2" concrete screw should be used ...
The American Institute of Steel Construction 13th Edition Steel Design Manual section 16.1 chapter J-3 specifies the requirements for bolted structural connections. [9] Structural bolts replaced rivets due to the decreasing cost and increasing strength of structural bolts in the 20th century.
A cast-in-place anchor bolt. The simplest – and strongest – form of anchor bolt is cast-in-place, with its embedded end consisting of a standard hexagonal head bolt and washer, 90-bend, or some sort of forged or welded flange (see also stud welding). The last are used in concrete-steel composite structures as shear connectors. [6]
DIN 18800-1: Steel structures – Part 1: Design and construction: Withdrawn: DIN EN 1993 DIN EN 1090: DIN 18800-2: Steel structures – Part 2: Analysis of safety against buckling of linear members and frames: Withdrawn: DIN EN 1993: DIN 18800-3: Steel structures – Part 3: Analysis of safety against buckling of plates: Withdrawn: DIN EN 1993 ...