House Weights and Retrofit Designs

The house weights listed here are the synopsis of many weeks of hard work by engineer Jim Russell.  Its conclusions became the engineering basis of Standard Plan A.

He looked at the most common combinations of variables found in ordinary houses.  His calculations are the most exhaustive and reliable calculations currently available to the public.

Lightweight roofing of  composition shingles, exterior wood sheathing or board finish, and ½” gypsum wallboard interior finish.

 One Story

 34# per square foot

Two Story

29.5# square foot

 

Lightweight roofing, exterior wood sheathing or board finish, and gypsum lath and plaster interior finish.  

One Story

45# per square foot

Two Story

41# per square foot

 

Lightweight roofing, cement plaster (stucco) exterior finish, and ½” gypsum wallboard interior finish.

 One Story

41# per square foot

Two Story

36.5# per square foot

 

Lightweight roofing, cement plaster (stucco) exterior finish, and gypsum lath and plaster interior finish.

 

One Story

 50# per square foot

Two Story

45# per square foot

* Assumption is that two story house has equal square footage on first and second floors

If you want to figure out the weight of your house on your own this will help.

This is from the 1946 Steel Construction Manual

Areas Served

San Jose,Sunnyvale, Fremont,Oakland,Berkeley
And Surrounding Areas
408-664-6355
510-548-1111

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Don’t Try This At Home

This website is intended to help clients of Bay Area Retrofit to understand their retrofit plan, and as a resource for retrofit professionals.

IT IS NOT INTENDED AS A GUIDE FOR DIY RETROFITS. Retrofit design is based on many factors. Each house is unique. Bay Area Retrofit does not recommend performing a retrofit without the guidance and supervision of experienced and knowledgeable retrofit professionals, and is not responsible for costly errors, injuries, or earthquake damage that result from such attempts.

License Info

Works' Comp RWCC64393236
Contractors Lic #558462
Bond #SC6334450
Liability Ins PCA 1045011
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