Load Combinations — ASCE/SEI 7-22

1 · Input data

Every load combination of ASCE/SEI 7-22 Chapter 2 that applies to the load effects you enter, in strength design (Section 2.3) or allowable stress design (Section 2.4) — procedure ENG-2026-10-039. The page returns the complete set with the branch actually used for each combination, and the governing combination for the maximum and for the minimum separately, because the maximum is the design value for a strength check and the minimum is the value for net uplift, sliding and anchorage. This page combines loads; it does not produce them — ground snow, wind pressure, seismic base shear and the definition of E come from their own chapters. Every parameter below is required: enter 0 for a load that does not act, because 2.3.1 and 2.4.1 require that the effects of loads not acting be considered. Press Solve the load combinations when the card is complete — if anything is missing or malformed the page opens a pop-up naming each parameter and computes nothing; an input that is well-formed but outside Chapter 2 is refused with the clause that refuses it.

Design method and the parameters that decide each load’s treatment

Design method (§2.1)

Flood zone (§2.3.2, §2.4.2)

Factor on D in Eq. (2.5-1) and (2.5-2)

Load effects that act — enter 0 for a load that does not act

D — dead load (kip)

L — live load (kip)

L_r — roof live load (kip)

S — snow load (kip)

R — rain load (kip)

W — wind load (kip, magnitude — taken both ways)

W_T — tornado load (kip, magnitude — taken both ways)

E_v — vertical seismic load effect (kip)

E_h — horizontal seismic load effect (kip, magnitude — taken both ways)

E_mh — horizontal seismic effect including overstrength (kip, magnitude)

F — fluid load, well-defined pressures and maximum heights (kip, magnitude)

H — lateral earth pressure, ground water pressure or bulk materials (kip)

T — self-straining force and its effects (kip)

D_i — weight of ice (kip)

W_i — wind-on-ice load (kip, magnitude)

N — notional load for structural integrity (kip)

A_k — load or effect from an extraordinary event (kip)

F_a — flood load (kip)

H_eb — earth or bulk pressure excluding ground water (§2.3.7, kip)

H_w — ground water pressure in soil (§2.3.7, kip)

Permissions — each one is a permission, not a default

L_o ≤ 100 psf (Table 4.3-1) — the basis the 0.5 permission on L requires

A garage or a place of public assembly — the 0.5 permission on L does not reach them

Take the 0.5 permission on L in 3a, 4a and combination 6 (§2.3.1 exception 1)

H is permanent, so it can resist as well as add (§2.3.1, §2.4.1)

The soil is permanent, so H_w can resist (§2.3.7)

Use the H_eb / H_w alternative of §2.3.7 (strength design only)

Take the W_T substitution in 4a and 6a (§2.3.1 exception 3, §2.4.1 exception 2)

E comes from 12.4.3 / 12.14.3.2 as E_m, with the overstrength effect E_mh

Take the 1.2 allowable-stress increase of §2.4.5 (allowable stress design only)

2 · Solution

No solution yet — complete every input in the card above and press Solve the load combinations. This card stays empty until a solution is computed, and it is emptied again the moment any input changes, so a displayed solution always belongs to the inputs on screen.