Page Comparison

ASCE 7-16 LRFD and ASD Load Combinations Symbols in ideCAD Structural Software for ASCE 7-16

D = Dead load
E_m = Combined applied design force on the horizontal and vertical seismic load effects
E_mh= The effect of horizontal seismic forces, including overstrength
L = Live load
L_r = roof live load
S = snow load
W = Wind load
E_h = Horizontal seismic load effect
E_v = Vertical seismic load effect

...

LOAD COMBINATIONS FOR STRENGTH DESIGN (Reinforced Concrete, LRFD) in ideCAD Structural Software for ASCE 7-16

Basic Combinations

Basic load combinations used for the strength design are given below.

...

E = f (E_v; E_h) (defined in Section 12.4.2 or 12.4.3.1) is combined with the effects of other loads, according to ASCE 7-16 Section 2.3.1, basic combinations below is are considered.

• 1.2D + E_v + E_h + L + 0.2S

• 0.9D - E_v + E_h

...

Load combination requirements in Section 2.3 apply only to strength limit states. Serviceability limit states and associated load factors are covered in Appendix C of ASCE 7-16 covers serviceability limit states and associated load factors.

• 1.4D

• 1.2D + 1.6L + 0.5(L_r or S)

• 1.2D + 1.6(L_r or S) + (L or 0.5W)

• 1.2D + 1.0W + L + 0.5(Lr or S)

• 0.9D + 1.0W

• 1.2D + E_v + E_h + L + 0.2S

• 0.9D - E_v + E_h

...

LOAD COMBINATIONS FOR ALLOWABLE STRESS DESIGN - (ASD) in ideCAD Structural Software for ASCE 7-16

Basic Combinations

Basic load combinations used for the strength design are given below.

...

Where the seismic load effect with overstrength, E_m = f(E_v; E_mh), defined in Section 12.4.3, is combined with the effects impact of other loads.

• 1.0D + 0.7E_v + 0.7E_mh

• 1.0D + 0.525E_v + 0.525E_mh + 0.75L + 0.75S

• 0.6D - 0.7E_v + 0.7E_mh

...

...