Sorry if this is not the right sub forum
Looking at my tech drawings for an outbuilding, it is 7.5m x 3.5m, cavity wall, double pitched tiled roof and single storey.
It will be at the back of my garden, there are a number of large trees (30-40ft high) within about 3m of the proposed building. My soil is clay.
The foundations suggested are
1) Six concrete 'padstones', four on the corners and then one each in the middle of the 7.5m walls. The ones on the corners will be 1.2m square and 2m deep. The other two will be 1m square and 2m deep.
2) There will be six bits of steel lying on these padstones with spec 203x203x46kg/m. Each one 3m long
3) It also says
' Beams to be encased with grade 35 concrete. Minimum cover to steel shall be 50mm. Allow for steel mesh at centre of surrounds. The end of the beam shall extend to the centre of the pad'
I know nobody likes to second guess another professional's opinion/calcs but does this sound about right or over the top for a single storey 'non habitable' room?
Thanks for looking
Looking at my tech drawings for an outbuilding, it is 7.5m x 3.5m, cavity wall, double pitched tiled roof and single storey.
It will be at the back of my garden, there are a number of large trees (30-40ft high) within about 3m of the proposed building. My soil is clay.
The foundations suggested are
1) Six concrete 'padstones', four on the corners and then one each in the middle of the 7.5m walls. The ones on the corners will be 1.2m square and 2m deep. The other two will be 1m square and 2m deep.
2) There will be six bits of steel lying on these padstones with spec 203x203x46kg/m. Each one 3m long
3) It also says
' Beams to be encased with grade 35 concrete. Minimum cover to steel shall be 50mm. Allow for steel mesh at centre of surrounds. The end of the beam shall extend to the centre of the pad'
I know nobody likes to second guess another professional's opinion/calcs but does this sound about right or over the top for a single storey 'non habitable' room?
Thanks for looking