seating wall footing depth


  #1  
Old 04-04-17, 04:07 PM
M
Member
Thread Starter
Join Date: Apr 2017
Location: United States
Posts: 1
Upvotes: 0
Received 0 Upvotes on 0 Posts
seating wall footing depth

hi everybody
need some advice
here in Chicago I'm building new brick patio approx 24'x16' with the wooden pergola in one corner and the 16"-18" high seating wall around it
to make all project sturdier I want to pour the footing for the seating wall. while the pergolas posts will be buried in in concrete below frost line at 48". seating wall footing I will make 6"-7" wide and 24" deep with 2 lines of rebar.
do you think seating wall footing should be deeper? wider? should I put 4 lines of rebar instead of 2? should I put few inches of gravel under the footing and then compact it before pouring the concrete? any additional thoughts you have - please share. thank you for your help!
 
Attached Images  
  #2  
Old 04-04-17, 04:11 PM
Marq1's Avatar
Member
Join Date: Sep 2016
Location: USA MI
Posts: 9,745
Received 1,210 Upvotes on 1,098 Posts
I have 2 smaller seating areas on the back of my deck, built up with dimensional stone.

The seating area, including the paver patio is sitting on 10" of compacted crushed limestone and it's been there for close to 8 years with no issue.

I'm in Michigan so similar area, I'd say your more than sufficient.
 
  #3  
Old 04-08-17, 12:04 PM
BridgeMan45's Avatar
Member
Join Date: Oct 2011
Location: USA
Posts: 2,838
Upvotes: 0
Received 2 Upvotes on 2 Posts
To prevent frost-heaving of the footings, it's important that what they're poured on is a well-draining and compacted base. And keeping surface water drainage away from the footings also helps minimize frost-heave.
 
 

Thread Tools
Search this Thread
 
Ask a Question
Question Title:
Description: