Legend of Symbols
This table defines the symbols used in the anchor bolt design calculations.
Symbol
Parameter
Unit
Abrg
Bearing area of the anchor bolt head
in 2
Ase,N
Effective cross-sectional area of an anchor for tension
in 2
Ase,V
Effective cross-sectional area of an anchor for shear
in 2
Cat
Edge distance from the center of an anchor to the edge of concrete
in
da
Diameter of the anchor bolt
in
1c
Specified compressive strength of concrete
psi
futa
Specified tensile strength of the anchor bolt steel
psi
het
Effective embedment depth of the anchor
in
kc
Coefficient for basic concrete breakout strength
-
kcp
Coefficient for concrete pryout strength
-
Ncbg
Nominal concrete breakout strength in tension
lbs
Npn
Nominal pullout strength in tension
lbs
Nsa
Nominal steel strength of anchor in tension
lbs
Nn
lbs
Design tensile strength of the anchor
Spacing between adjacent anchors
in
s
Tu
lbs
Factored tension (uplift) load on the anchor
Vcbg
Nominal concrete breakout strength in shear
lbs
Vcp
Nominal concrete pryout strength in shear
lbs
Vsa
Nominal steel strength of anchor in shear
lbs
Vn
lbs
Design shear strength of the anchor
Vu
Factored shear load on the anchor
lbs
Strength reduction factor
-
lf/c,N
Modification factor for cracked concrete in tension
-
lf/ed,N
Modification factor for edge distance in tension
-
Aa
Modification factor for lightweight concrete
-
LEGEND FOR FORMULAS
Description
2022 CBC / 2021 IBC, ASCE 7-16, ACI 318-19, AISI S100-20
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