On 10/09/2020 13:13, Nikki Smith wrote:
On Thursday, 10 September 2020 at 12:58:52 UTC+1, Chris Bacon wrote:
On 10/09/2020 07:07, F Murtz wrote:
Any reason why you can not make the shed smaller?
It's a prefab concrete building. While possible (I could replace bays
with timber, for instance), I'd rather not.

It will be fine. You have effectively constructed a raft rather than strip footings, so any residual out-of-balance loads will be resisted by a small bending moment the central slab, which is fine assuming your mesh goes across everything. (and probably fine even if not)

The only issue would be if you have to make any fixings into the concrete near the edges as it might spall.

I have posted some pics on imgbb in another psot.

The only fixing I need to make is for the two side-by-side steel door
flamess at the front, where I propose to weld 3 pieces of 50mm x 6mm
flat bar to the bottom of the door frames which form almost the whole of
the front of the building, bringing the bar back into the building by
150mm or so, and bolting that to the floor. More ASCII art:


/ Front Elevation \ -roof slope exagg'd
/ \
############################################### - 6 x 2 "raiser"
@%%%%%%%%%%%%%%%%%%%%%%#%%%%%%%%%%%%%%%%%%%%%%@
@% %#% %@ @ = concrete post
@% %#% %@ # = timber post
@% %#% %@ % = steel doorframe
@% %#% %@ = = concrete raft
@% %#% %@
@% %#% %@
@% %#% %@
@% x %#% x %@
@%x %#%x %@
=x=====================x=====================x=
===============================================
===============================================

x = steel flat bar retn'd into bldg and bolted to floor "3D effect"