Browse Forums Paving & Concreting 1 Nov 10, 2014 11:21 am Greetings, Rebuilding another retaining wall, and ran into a problem on the weekend with one end post that wasn't true, so our new concrete sleepers wouldn't fit securely into the RSJ post. Have dug out the RSJ post and old concrete (fun job!), and will deepen the hole a bit to be wall height + 20% (following these guidelines), but wondering if I can get away with quickset concrete when setting the new post? This end stack is the smallest on the wall - only 600mm or 3 sleepers high, but I'm planning to install a large 15-20,000l rainwater tank a few metres from and above the wall, so don't want it moving. This site suggests it's ok but would be good to confirm from someone with experience, thanks! Re: Is quickset concrete ok for RSJ post? 2Nov 12, 2014 12:30 pm This is product marketed to fence builders because they like to have cement set hard quickly so they can continue to build the fence using the set post as a support. They claim you dont have to mix it, but the tamping in the instructions is still mixing it to a degree. But using that method will never be as good as thoroughly mixing it by hand first - tamping is not a thorough mixing method. By all means use it if you can deal with the rapid hardening, but for maximum strength, mix it thoroughly by hand before pouring like normal concrete mix. Re: Is quickset concrete ok for RSJ post? 4Mar 16, 2015 2:52 pm Just a follow up post; 4 months or so down the track now and it's looking great, no movement whatsoever. I guess the only difference from the norm is I had to remove the old concrete first, and digging that out created a bigger hole than you might ordinarily make. From memory it ended up swallowing two full bags of quickset concrete mix. Only one more retaining wall to go Re: Is quickset concrete ok for RSJ post? 5Mar 20, 2015 1:32 pm When I set 50mm steel fence posts, I get a length of 110mm pvc pipe, put that around the post as a sort of sleeve, and pour the concrete in that. Then backfill the dirt, then extract the sleeve carefully. Saves heaps. If you are using bigger , say 100mm posts, you can make you own sleeve by getting a sheet of tin, forming it into a tube, and rivetting it together. It seems very clear to me that your contract states that a security account does NOT need to be established so the answer to the builder is NO. If in doubt find a contract… 1 8501 2 31332 |