B18.2.1 - Square, Hex, Heavy Hex, and Askew Head Bolts and Things To Know Before You Get This

5/8 Insert Failure at 9,320 pounds Concrete Broke around the inserts, then the concrete block split in the vicinity of the strengthening steel bar. Insert did not break. 3/4 Insert Failure at 9,830 pounds Concrete broke around insert body and broken at reinforcing steel bar. Insert did not break. 3/4 Long Insert Failure at 12,860 lbs Lips along slot of insert broke.

Place did not take out of concrete. SHEAR TEST: The tests pulling in an instructions parallel to the surface area of the concrete were made with a heavy angle block bolted at the mid point of the slot of the insert.  A Good Read  was used 2" out of the surface area of the concrete.

The following outcomes were gotten: 5/8" Insert 5,240 pounds Bolt slipped in slot 1/16" 6,600 lbs Bolt insinuated slot 3/16" 7,600 lbs Bolt slipped in slot 3/8". No failure in insert or concrete, but bolt was flexing a little. 14,000 lbs Maximum Load. Concrete broke around body of insert. 3/4" Place 7,600 pounds Bolt insinuated slot 1/16" 10,500 pounds Bolt insinuated slot 3/16" 10,960 lbs Bolt insinuated slot 3/8".

ASME-ANSI B18.2.1 Askew Head Bolts - Fasteners, Bolt, Nut Fundamentals Explained

11,100 pounds Maximum Load. Threads removed on bolt. 3/4" Long 5,660 lbs Bolt slipped in slot 1/16" 7,140 lbs Bolt insinuated slot 3/16" 7,840 lbs Bolt insinuated slot 3/8". No failure in insert or in concrete, but bolt was bending somewhat. 19,150 lbs Maximum Load. Vibrant had actually slipped to bottom of slot and head sheared.

Parallel to Concrete Face from top of Anchor. Place Size 1 2 3 Average 5/8" 6,060 6,500 6,570 6,377 3/4" 7,040 7,580 7,230 7,230 3/4" Long 9,050 8,550 8,580 8,727 Concrete Fractured in all specimens, but insert did not fail. Compressive strength of concrete utilized at 28 days was 5,860 psi.

Place Size 1 2 3 Average 5/8" 4,450 a 4,800 a 4,600 b 4,650 pounds 3/4" 5,400 b 5,800 b 5,700 a 5,633 lbs 3/4" Long 6,900 c 8,300 c 7,100 c 7,433 pounds a: Snapped Hood - Cracked Insert Slot Concrete Strength 6,040 psi b: Pulled Out - Insert Intact c: Broke Concrete - Insert Intact Concrete was put into molds determining 11-1/2" x 20" x 20".