Concrete Anchor Design: cast_in_headed_bolt
Concrete anchor design data per ACI 318-19 Chapter 17. Covers cast-in and post-installed anchor types: cast-in headed bolt (F1554 Gr.36/55/105), cast-in J-bolt, cast-in headed stud (AWS/A108), expansion wedge anchor, expansion sleeve anchor, undercut anchor, adhesive threaded rod (AC308), adhesive rebar, and concrete screw anchor. Fields include nominal diameter, effective embedment hef, effective stress area Ase, bearing area Abrg, steel tensile strength Nsa, shear strength Vsa, concrete breakout Nb at f'c=4000 psi (kc=24 cast-in, kc=17 post-installed), pullout Np, critical edge distance cac, critical spacing, minimum member thickness, installation torque, phi factors for tension and shear, and seismic qualification. Sources: ACI 318-19 Ch.17, ACI 355.2/355.4, ASTM F1554, ASME B1.1, ICC-ES AC193/AC308.
| anchor type | record id | Fu ksi (ksi) | Fy ksi (ksi) | anchor area Ase in2 (in2) | bearing area Abrg in2 (in2) | concrete breakout Nb lb (lb) | critical edge distance cac in (in) | critical spacing in (in) | effective embedment hef in (in) | min member thickness in (in) | nominal diameter in (in) | nominal diameter mm (mm) | notes | phi shear | phi tension | pullout Np lb (lb) | seismic qualification | steel grade | steel shear strength lb (lb) | steel tensile strength lb (lb) | typical applications |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| cast_in_headed_bolt | CIHB_100_01 | 58 | 36 | 0.6057 | 2.241 | 40,983 | 13.5 | 18 | 9 | 18 | 1 | 25.4 | Nsa=0.6057*58000=35131 lb; Nb=40983 lb; Np=8*2.241*4000=71712 lb; ASME B1.1 1-8 UNC Ase=0.6057 in2 | 0.65 | 0.7 | 71,712 | No | F1554-Gr36 | 21,079 | 35,131 | heavy machinery, transformer pads, wind turbine anchor |
| cast_in_headed_bolt | CIHB_100_02 | 75 | 55 | 0.6057 | 2.241 | 63,098 | 18 | 24 | 12 | 24 | 1 | 25.4 | Nb=24*sqrt(4000)*12.0^1.5=63098 lb; Np=71712 lb; ductile steel failure favored; Nsa=45428 lb steel governs | 0.65 | 0.7 | 71,712 | Yes | F1554-Gr55 | 27,253 | 45,428 | large seismic base plate, heavy structure |
| cast_in_headed_bolt | CIHB_125_01 | 58 | 36 | 0.9691 | 3.541 | 57,276 | 16.875 | 22.5 | 11.25 | 22.5 | 1.25 | 31.8 | Nsa=0.9691*58000=56208 lb; Nb=24*sqrt(4000)*11.25^1.5=57276 lb; Np=8*3.541*4000=113312 lb; Nsa ~ Nb at this embedment ratio; ASME B1.1 1.25-7 UNC | 0.65 | 0.7 | 113,312 | No | F1554-Gr36 | 33,725 | 56,208 | bridge bearing pedestals, transformer anchor bolts |
This is a sample. Search the full concrete anchor design dataset and 300+ more by creating a free account and accessing the database.
Get started for FREE