gsozz Posted May 15, 2005 Report Share Posted May 15, 2005 These brick sized concrete blocks were used to support all the rebar in the bottom of the fottings in this prepour inspection. They were placed approx every 6 to 10 feet with the rebars re3sting on top of theme in most places. Is this what is refered to as a "dobie" . Thanks, gsozz Download Attachment: CMU.JPG 158.37 KB Quote Link to comment Share on other sites More sharing options...
hausdok Posted May 15, 2005 Report Share Posted May 15, 2005 Look like dobies. Is that a post-tensioned slab? You can find out lots about those on the Concrete Network. ONE TEAM - ONE FIGHT!!! Mike Quote Link to comment Share on other sites More sharing options...
monte Posted May 28, 2005 Report Share Posted May 28, 2005 Dobie, Yes, The dobie is used to provide the proper clearance between the edge of the form (This case the soil is the form) and reinforcement, so that the placed concrete will cover the reinforcement completely. Most of the time there is not enough dobie placed, so that the belly of the rebar will not have the design clearance. Rule of Thumb for clearance is double the size of concrete aggregate add ½â€ Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.