foundation, for garage

Nicole22

Ok our old shed is coming down and we are replacing old with new old walls ahd damp patches and old doors blocked in floor all uneven very old shed. we are replacing with same size new. have 2 friends knocking down old to save as much as can cost wise. i said i ask few questions on here to get advice as been told many different approaches. firstly told did foundation for wall 18 inch's deep then approx 10 inches of this will be leveled up with concrete with re bar fitted also in it. then blocks laid up on this to past floor level. then floor poured. i am looking to know what is needed depth wise for floor and packing plastic etc in the floor want it pretty good will be used for cars only parking. im looking to know what sixe stone in floor how deep does it need whacking. i will have to hire builder for the laying of blocks and professional to level out the floor. but any aother advice to getting to this stage is very much needed and appricated. i dont know sheds exact size but it holds 6 cars. thanks nicole

leeomurchu

Nicole22 wrote: »

i dont know sheds exact size but it holds 6 cars. thanks nicole

That ain't a shed that's for sure

You're goin to need rebar in the floor aswell I reckon that's gonna be a big slab of concrete so be sure to get the sub floor done properly or it'll crack.

grazeaway

Thats a decent sized garage alright. another way would be to build a slab/raft floor rather then building the foundations like in a house. depends on how the garage is shaped and if you plan on using the attic space?

its very useful for small to meduim sized garages as you will use less concrete as the whole floor takes the weight of teh garage rather than just the footings.

level the area where the garage will be, then put down hard core stone and compact, then put the finer stone on top again compact this. put down your damp proof membraneand put up shutterign around the base of the garage. get steel mesh reenforcing steel and place in foundationa and pour your concrete. once set you can build your walls on top on the base.

BE_MIEI

grazeaway wrote: »

Thats a decent sized garage alright. another way would be to build a slab/raft floor rather then building the foundations like in a house. depends on how the garage is shaped and if you plan on using the attic space?

its very useful for small to meduim sized garages as you will use less concrete as the whole floor takes the weight of teh garage rather than just the footings.

level the area where the garage will be, then put down hard core stone and compact, then put the finer stone on top again compact this. put down your damp proof membraneand put up shutterign around the base of the garage. get steel mesh reenforcing steel and place in foundationa and pour your concrete. once set you can build your walls on top on the base.

Please dont take any structural advice given on boards.ie. The ban on discussion of structural matters is in place for very good reasons.

grazeaway

BE_MIEI wrote: »

Please dont take any structural advice given on boards.ie. The ban on discussion of structural matters is in place for very good reasons.

Just giving some advice, I'm sure the OP will have their own people to give advice on how to do it

muffler

grazeaway wrote: »

Just giving some advice, I'm sure the OP will have their own people to give advice on how to do it

You were sailing close to the wind with regards to Section 1.5 of the forum charter. Have a quick read please.

Nicole22

i will appoint an independent and knowledgeable third party come build time. but since not spending money yet on that advice given is just for gigging of foundations and a builder will be drafted in for the block laying process. half of the shed walls are still atanding and ane in very good condition. was newest section when done last. rest was as old as the hills them selves stone jobbie. the good remaining wall section has good floor but i was hoping to get base and wall high enough to then rip out all old and new floor and fit complete new one. will i need to fit insulation in the floor or simply plastic? whats the general lay out for floor depth in a shed with insulation etc?
cheers and thanks for all advice.