Levels

craig · Post: # 15718Post **craig** Tue Nov 28, 2006 7:33 pm

hi could anyone give me a bit more info on leveling the sub base thanks craig

Mark B · Post: # 15720Post **Mark B** Tue Nov 28, 2006 8:13 pm

just spread out the sub-base, once put down it should be roughly leveled, it should then be compacted fully. check your levels and add more subase if needed or remove in any low/high spots to bring it to within +/- 10mm of the level you are working to. the subbase has to be roughly level to within around +/- 10mm.

Ted · Post: # 15722Post **Ted** Tue Nov 28, 2006 8:53 pm

i find a rake quite handy

a concrete rake is good as they are well built, most other rakes don't last that long I find

Tue Nov 28, 2006 10:28 pm

you can always cut roofing batten into small stakes and level these out first to the falls,this will give you more idea of where to put the stone rather than just chancing it
LLL

craig · Post: # 15753Post **craig** Thu Nov 30, 2006 5:18 pm

thanks lads been out all day in the rain got an ok level on it

Mark B · Post: # 15755Post **Mark B** Thu Nov 30, 2006 6:36 pm

good stuff, always remember,as long as your foundations/sub base is right it is the thing that could make or break your drive. keep us posted on how you get on throughout the job.

Mark

craig · Post: # 15756Post **craig** Thu Nov 30, 2006 7:34 pm

will do thanks am building a base for a garage to keep my rover cabrio in

Fri Dec 01, 2006 6:26 am

so have you done foundations for the garage or are you building off the slab??
regards LLL ???

craig · Post: # 15809Post **craig** Fri Dec 08, 2006 7:21 pm

hi sorry didnt reply was busy all week am building a wooden garage on top of 3x2, slabs also borrowed a vibrating drum roller of a freind he says its a 5 ton compaction capability

Post: # 15816Post **Dave_L** Fri Dec 08, 2006 9:13 pm

Sounds about right, 5 ton compaction.

jeff wood · Post: # 15973Post **jeff wood** Sun Dec 17, 2006 6:13 pm

excuse my igmorance,,,but why does the sub base have to be level..

won't the concrete find its own level when its poured in ?

reason for bringing this up, is that ive just done a crusher run sub base, and to be honest i didnt pay too much attention to getting it level...

Stuarty · Post: # 15974Post **Stuarty** Sun Dec 17, 2006 6:58 pm

the concrete will find its own level, but where the concrete is thinner, it is weaker.

Take a block paved driveway. If one end has 200mm MOT, and the other end has 100mm MOT thats 100mm of difference to make up with the sand, which is not acceptable. The sand would sink, no matter how much you run the plate over the top of it. Its just too deep.

Its all about keeping things uniform. if you screw up your levels at the start, the whole job can just fall to pieces around you.

Post: # 15979Post **seanandruby** Sun Dec 17, 2006 8:42 pm

imagine your laying a carpet. you would expect the floor boards to be level a?