Im currently having a single storey extension built by a local builder. He is at the stage where he is ready to fit 2x RSJ's (250mm x 150mm) that will span the width of the house (5.9m) at ceiling level to hold up the rear leaves of the house. This will allow us to knock out the wall underneath thus making the rear rooms and extension into one big room. We have had structural calcs done and from this have built 2x 600mm x 600mm pillars to support the RSJ's.
My problem is that the pre-cut steels that are waiting to be fitted and are sitting in my garden at the moment look to short on the length. Once they are sat on the padstones it will mean that just 225mm of RSJ will rest on each padstone, my builder assures me that this is 75mm above the minimum (150mm) but this doesn't seem enough to me. Considering the surface area of the pillar/padstone I think he could of had them cut at least another 300mm longer.
Can someone tell me what is standard practice in the building regs? and am I worrying too much?
My problem is that the pre-cut steels that are waiting to be fitted and are sitting in my garden at the moment look to short on the length. Once they are sat on the padstones it will mean that just 225mm of RSJ will rest on each padstone, my builder assures me that this is 75mm above the minimum (150mm) but this doesn't seem enough to me. Considering the surface area of the pillar/padstone I think he could of had them cut at least another 300mm longer.
Can someone tell me what is standard practice in the building regs? and am I worrying too much?