ASCE 7
The standard structural engineers use to determine design loads on buildings.
Quick Answer
ASCE 7, Minimum Design Loads and Associated Criteria for Buildings and Other Structures, is the American Society of Civil Engineers standard that defines the loads structures must resist. It covers dead, live, snow, rain, wind, seismic, flood, and other loads, and the International Building Code references it for structural design.
The Full Picture
Before an engineer can size a beam or foundation, they need to know what forces the structure must carry. ASCE 7 provides the loads and load combinations for that purpose. It is published by the American Society of Civil Engineers and revised periodically, and the IBC adopts specific editions by reference, so code-adopting jurisdictions effectively require its use.
The standard covers gravity loads such as dead loads and live loads, environmental loads such as snow, rain, ice, and wind, and seismic loads, along with flood and tsunami provisions and other criteria. It also defines load combinations used with strength design and allowable stress design, and it classifies buildings into risk categories that reflect the consequences of failure. An essential facility like a hospital is designed for higher demands than a storage building.
Wind and seismic provisions drive much of the complexity. Wind design depends on location, exposure, and building geometry, while seismic design depends on site ground motion, soil conditions, and the structural system chosen. Material standards such as ACI 318 for concrete and AISC 360 for steel then govern how the members are designed to resist those loads.
Contractors encounter ASCE 7 indirectly through structural drawings, general notes, and design criteria sheets that list the loads used. Reviewing those criteria against the adopted code edition can reveal inconsistencies before bidding.
Real Examples
Common Misconceptions
People assume: ASCE 7 tells engineers how to design steel and concrete members.
Actually: ASCE 7 determines the loads. Member design is governed by material standards such as AISC 360 and ACI 318.
People assume: Loads are the same everywhere for a given building type.
Actually: Snow, wind, and seismic loads depend on location and site conditions, so the same building can see very different design loads in different places.
Does MeltPlan Solve This?
Partially — adjacentMeltPlan Code can help teams research which load-related code requirements apply and flag compliance questions. It does not perform structural analysis or determine design loads; that work belongs to the structural engineer of record.
Research structural code requirements →Frequently Asked Questions
What loads does ASCE 7 cover?
Dead, live, snow, rain, ice, wind, seismic, flood, and tsunami loads, plus load combinations and other design criteria.
How does ASCE 7 relate to the IBC?
The IBC references ASCE 7 for design loads and incorporates specific editions by reference, so using the referenced edition is part of code compliance.
What is a risk category?
A classification of buildings by the consequences of failure, from low-hazard structures to essential facilities, which determines importance factors applied to loads.
Who applies ASCE 7 on a project?
The structural engineer of record determines loads and design criteria, which appear in the structural drawings and calculations.