There will actually be room for 5.2 m3 (footings + slab). Not that it makes any difference.
It just seems very risky to let it just wheelbarrow, over 2 layers of mesh!!
Browse Forums Paving & Concreting Re: Do we need a concrete pump? 41May 25, 2011 6:56 pm There will actually be room for 5.2 m3 (footings + slab). Not that it makes any difference. It just seems very risky to let it just wheelbarrow, over 2 layers of mesh!! My signature is distracting people from my wise posts ... Re: Do we need a concrete pump? 42May 29, 2011 11:23 pm No issues with barrows over mesh. Its been done like that since the Romans built the coliseum. 5m isn’t much to barrow either. You usually drop the mesh on the rock where you are barrowing. As the concrete is poured you lift the mesh and sit on the chairs again. Do you have a double top layer of mesh? This could be a bit harder to lift. But then again, should be ok to just barrow over. Re: Do we need a concrete pump? 43May 30, 2011 12:04 pm bicko123 You usually drop the mesh on the rock where you are barrowing. ... Do you have a double top layer of mesh? This could be a bit harder to lift. But then again, should be ok to just barrow over. What do you mean "double top layer of mesh"? I've never heard of that. We have 2 layers of mesh, one bottom, one top, never heard of having one bottom and 2 top My signature is distracting people from my wise posts ... Re: Do we need a concrete pump? 44May 30, 2011 6:49 pm You have cleared up the reo thing now. i meant does you slab design have one sheet of mesh top and bottom or two layers at the top. When you barrow, the top layer of mesh will be dropped meaning you are barrowing over the mesh. The mesh will bridge the sand so it shouldn't push around enough to worry about. Re: Do we need a concrete pump? 46May 31, 2011 11:45 pm Lex Rightio (Still haven't heard of 2 layers of fabric laying directly one on another but it doesn't matter anyway ... ) they would be separated by chairs Where you are coming from is where you are going to... Re: Do we need a concrete pump? 47Jun 01, 2011 9:21 am Interesting ... ... a slab with effectively 3 layers of mesh (unless there is no bottom layer or unless the bottom layer also has more than 1 sub-layer of mesh). Where are these designs typically used?? How thick are those slabs (typically)? So, if the 2 top fabrics are separated by chairs, what's the distance between them in this "top layer"? And how far is the lower mesh in the top layer from the top of the bottom layer of mesh (if the design specifies 2 layers of mesh)? Confused? My signature is distracting people from my wise posts ... Re: Do we need a concrete pump? 48Jun 01, 2011 8:49 pm onc_artisan Lex Rightio (Still haven't heard of 2 layers of fabric laying directly one on another but it doesn't matter anyway ... ) they would be separated by chairs not necessarily. our designers at work are very conservative. i had a slab poured with double SL81 layers top and bottom on one section and the other section had 16mm bars @ 100mm centres top and bottom the slab did support 12m high silos though... Now i have to remove a section of the slab the saw cutters love me haha Talking of heavy reo designs. the pump station construction site m running has 40mm bars in the walls. now thats big! Again the saw cutters loved drilling cores through 70Mpa concrete with 40mm bars at 150mm centres 18 90428 |