butressed wall

Appreciate any advice/pointers on this because my Structural Engineer has sent calculations for a door and aperture that don't add up I think (and hasn't responded for 2 days). We want to install sliding patio doors in the garden-facing back room which has an external width of 3430mm (location...

Hi, I have a couple of questions relating to the approved drawings for a single storey 3m extension. A new 5.5m wall will be built next to the neighbours house on the left. Some of the wall will be in the existing garage and it will extend by 3m onto the patio. The original architect added a...