Summary of Load Combinations for DPT1302-61 and DPT1301-50

Thailand's DPT 1301-50 (Standard for wind load calculation) and DPT 1302-61 (Standard for Seismic Design) are currently adopted for building design practice. Here is the summary of load combinations for structural design according to codes:

[1] Gravity + Wind Load (DPT1301-50 following Building Acts Issue 6: 2527)

For strength design 1.4D + 1.7L 0.75(1.4D + 1.7L + 1.6W) 0.9D + 1.6W

For allowable stress design

1.0D + 0.75(L + W)

0.6D + W

EIT 011008-21 standard for structural concrete using the strength design method -- 8% higher W than DPT 1301-50, but unnecessarily required

1.4 D + 1.7 L 0.75(1.4D + 1.7L) + 1.3W 0.9D + 1.3W

ACI 318-99 (Gravity + Wind Load)  -- Recommended  

1.4D    

1.4D+1.7L    

1.2D +1.0L + 1.6W  

  1.2D + 0.8W

    0.9D + 1.6W

 ACI 318-11 (Gravity + Wind) -- Not recommended

    1.4D

    1.2D + 1.6L

    1.2D + 1.0L + 1.0W

    0.9D + 1.0W

[2] Gravity + Seismic (DPT 1302-61) is similar to Building Acts 2566 For member design using SDM 1.05D + 1.275L + 1.0E 0.9+1.0E For WSD check, i.e. foundation 1.0D + 0.7E

1.0D +0.525E +0.75L 0.6D + 0.7E

ACI 318-11 (Gravity + Seismic)

1.4D

1.2D + 1.6L

1.2D + 1.0L + 1.0E

0.9D + 1.0E