Anyone know which rebar I'd need for the footing of a trench foundation? The footing is going to be 450mm wide, 350mm deep (deeper than I'd like, but a long story). There are quite a diameters available.
http://www.buildingmaterials.co.uk/high-tensile-rebar.html?filter=&fl5=Rebar
Also, how many runs of it? Do I want two runs near the bottom (or even the middle?):
[code:1]-----------
| |
| o o |
-----------[/code:1]
Or three runs, with one nearer the top?:
[code:1]-----------
| o |
| o o |
-----------[/code:1]
Or even four? Four is starting to get expensive though. It's only a blockwork garage
Thanks for any opinions!
http://www.buildingmaterials.co.uk/high-tensile-rebar.html?filter=&fl5=Rebar
Also, how many runs of it? Do I want two runs near the bottom (or even the middle?):
[code:1]-----------
| |
| o o |
-----------[/code:1]
Or three runs, with one nearer the top?:
[code:1]-----------
| o |
| o o |
-----------[/code:1]
Or even four? Four is starting to get expensive though. It's only a blockwork garage
Thanks for any opinions!