ballybollen
Member
I’m going to concrete a shed floor had a lot of fill do you roll or vibrate don’t want it cracking! What concrete to use there be forklifts on it?
Preparing shed floor
- Thread starter ballybollen
- Start date
Derky
Member
- Location
- Bucks/oxon
Most important part of concrete is your sub base. Put in rubbish and it will sink. You dont want alot of bricks or skip rubbish. We insist on a decent stone. Had lots of success using incinerator fly ash too. A Big roller and keep rolling. If its in a shed you want mesh in it. 252 min. Poss an RC35 depends on the finish.
ballybollen
Member
Had a lot hard fill packed in with digger about 8ft deep would fibre concrete be the way to go instead of mesh?
Digger won't pack , needs to be a vibrating roller in Max 200 MM layers rolled in both directions , 8ft will sink , be ok if whole area us 8ft and sinks by same , but if there is a slope on original ground it will sink differently ,
Depends what building use is you could maybe increase thickness of conc and put in double layer a393 mesh and floor would move as 1 , but depends on size and final loading
Derky
Member
- Location
- Bucks/oxon
I hope you put it in layers and compacted ? Otherwise look forward to problems. You must tie into the posts with rebar and layers of mesh to hold the shed as one if you have built up ground.
Forever Fendt
Member
- Location
- Derbyshire
Fraserb
Member
- Location
- Scottish Borders
We put a huge amount of fill (10-12000 ton) into our last shed, it was all spread out with a dozer at about 300mm deep and to walk on and kick about you thought it was pretty solid but a couple of passes with the big vibrating roller would drop it almost 100mm I reckon, took a good few layers to get it all built up.
- Location
- East Sussex
Even then I think it will settle, ive got some terrace round the house only 4’ thick settling 4years later! Would a machine with a long pecker driven through help it settle quicker?
ballybollen
Member
Yea put it in layers took about 3 months to fill it on and off!!then rained on it for about 6 months before got roof on
ballybollen
Member
Don’t need to tie into posts their bolt boxes in 2 ft of concrete 12ft walls tied in to each post filled floor a foot at a time
Derky
Member
- Location
- Bucks/oxon
Whats to stop your footing kick on made up ground. The whole idea of tieing the floor in is that the whole building is tied together which helps support it. Seeing a stanchion kick is not a nice site.
ballybollen
Member
I didn't put my foundation on top of fill.i dug out foundation fitted bolt boxes bolted my steel to that then filled it inside so stanchion can't kick out
Zebbedee
Member
- Location
- Scotland in the best bit
Hire a decent vibrating roller( as big as you can use in the building) and drive about in there until you crack up with boredom, then do another day of same thing, you will not roll it to much. And I think tieing the stanchions into floor with rebar is a good idea along with mesh. None of the above will stop it cracking or moving if sub-base moves but it will hold it all together better