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Slopped spread footings vs. stepped footings for an Abumtnet or Pier, Pros and cons

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gennadiyb

Structural
Joined
Feb 8, 2013
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6
Location
US
What is the practical slope for spread footings?
 
On my previous design, construction office prefered stepped spread footing. I am looking for a general information (code reference the best) and recommendations for the future projects. What slope contractor will be comfortable with to pour concrete. Thanks.
 
With steeper slopes and wide abutments it could be costly to pour it flat. I heard with stepped footings though contractor has problem to proper compact the base, besides it has to pause between segments to prepare the next one.
 
Go with steps, usually, we're only talking about a height differential of 2 or 3 feet. if you're on rock or a stiff soil it's not a problem to prep the base.
 
To msquared48: Sorry. I meant strip footing, not spread.
 
UBC used to allow 10% maximum slope
 
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