Offset Wall Load on Piled Ground beam

[Contraflexure74]

Hi guys,

I have a suspended insitu concrete slab and ground beam supporting a 2 storey house extension which is founded on 200 CFA piles at 2m centres. Ground beams and slab are monolithic. At the edge of the site the wall loads are tight up against existing boundaries which induce an eccentric load on my edge ground beams as the piles cannot be installed under the centre of this wall.

Any ideas?

I was thinking of running a series ground beams perpendicular to these perimeter walls with a short cantilever at the end picking up an edge beam supporting these walls.

Any advice/ideas appreciated.

 

[hokie66]

Your way will work, but if you design the slab appropriately, it should be able to deal with the eccentricity. How much eccentricity do you have from centre of wall to centre of piles?

 

[Contraflexure74]

Hi Hokie66,

Eccentricity is circa 250mm.

 

[hokie66]

In that case, I think making the slab do the job is the best solution. Avoiding the changes in depth involved in building the transverse beams is beneficial to constructability.

 

[Contraflexure74]

Thanks Hokie66. Much obliged.