Codydog

So the architect shouldn't have given his drawings to the Structural Engineer then?

I've plotted out the roof line and it misses the top of the window where we were meant to have a dormer. I prefer to have a full height ceiling and no dormer, but it's not what we have planning for. I'm confused about what should I have asked the architects for? We paid for a measured survey, then design and plans for planning permission, then Building control drawings, then structural calculations and drawings.

Hi all, I'm building a small 1.5 storey side extension on our house, dining room downstairs and bedroom upstairs. Just a bit of advice please. I've had various issues with the Building control plans/Working drawings, the original inaccuracy I noticed was that the front to back measurement was 200mm out, meaning that the beams for the floor were too short. I contacted the architect and told him about the difference and that I was concerned how this might effect the structural calculations for the pitched roof etc. He told me that I should have ordered the beams from site measurements rather than from the plan measurement, which I suppose is fair enough. It only cost me an extra day and £60 for a couple of additional beams, so no great worry about the block and beam floor. (the measurement was a printed measurement, and not scaled from the plans) I'm now at the stage where I'm above 1st floor joist height with the brickwork and am trying to mark out what course the wallplates will be on (different heights front and back), I've noticed that the plans and the Structural Engineers calculations show a 45 degree roof, the existing roof is 50 degrees, so for the extension roof to run parallel it also needs to be 50 degrees. Surely the plans should be more accurate? Do the structural Engineer's calculations need adjusted? Do I just make it up as I go along and hope it looks similar to what was approved by planning? We have a dormer on the plans at the front, but I'm now wondering if the roof line will be above the window meaning no dormer required, but not what was granted by planning and passed by building control. Thanks!