Expanded Coil Insert are fabricated in two,four or six strut versions, as required. A standard coil is welded
at one end of the strut wires and on the opposite end, an expanded pitch coil is welded.The expanded pitch coil welded
to the more deeply embedded end of the insert, serves to distribute the applied loads over a larger volume of concrete.
♦ Ethafoam Plug installed when mounting washers are ordered.
♦ Minimum spacing between insert is twice the minimum corner distance.
♦ Longer lengths available, if required.
Expanded Coil Insert Selection Chart | |||||||||
Insert | Bolt | Insert | Minimum | Minimum | Safe | Safe | A | B | C |
Type | Diameter | Length | Edge | Corner | Working Load | Working Load | |||
Distance | Distance | Tension | Shear | ||||||
F-56 | 3/4" | 4-1/2" | 2-1/2" | 6" | 1,800 lbs. | 680 lbs. | 4-1/2" | 0.375" | 1-1/2" |
4" | 8" | 2,220 lbs. | 1,380 lbs. | ||||||
8" | 12" | 4,250 lbs. | 2,760 lbs. | ||||||
14" | 20" | 4,250 lbs. | 4,250 lbs. | ||||||
F-56 | 1" | 5-1/2" | 2-1/2" | 7" | 2,000 lbs. | 740 lbs. | 5-1/2" | 0.440" | 2-1/2" |
4" | 9" | 2,560 lbs. | 1,500 lbs. | ||||||
8" | 12" | 5,300 lbs. | 3,250 lbs. | ||||||
16" | 20" | 6,250 lbs. | 6,250 lbs. | ||||||
F-58 | 1-1/4" | 7-1/2" | 3" | 10" | 2,480 lbs. | 1,270 lbs. | 7-1/2" | 0.440" | 2-3/4" |
5" | 12" | 3,600 lbs. | 2,730 lbs. | ||||||
8" | 15" | 5,700 lbs. | 4,790 lbs. | ||||||
18" | 26" | 10,480 lbs. | 10,590 lbs. | ||||||
F-60 | 1-1/2" | 9-1/2" | 3" | 12" | 2,820 lbs. | 1,500 lbs. | 9-1/2" | 0.440" | 3-5/8" |
5" | 15" | 3,880 lbs. | 3,230 lbs. | ||||||
8" | 15" | 6,680 lbs. | 6,260 lbs. | ||||||
22" | 30" | 14,580 lbs. | 16,430 lbs. |
Safe Working Load provided a factor of safety of approximately 4 to 1 in 3,000 psi weight concrete.
Safe Working Load is based on a 1/2” setback face of concrete