UK Structural Calculations for Beams & Rafters
Budget: £250 – £750 GBP
I'm in need of qualified structural engineering to conduct calculations for a UK dwelling. I want to strengthen the floor in our loft and rafters in the roof. The calculations should cover the following structural elements:
1) Flitch Beams - dimensions of timber and steel (ideally 6mm), how many and size of bolts required and size of loadbearing plate
a)Beam 1: 4.1m span to support one half of a floor (3m span)
b)Beam 2: 3.16m span to support one half of a floor (2m span)
2) Floor Beams - need thickness of C24 grade timber, assuming 300mm centres (same as current ceiling joints). Floor beams do not need to support the ceiling below. Room is bedroom.
a) 3m span (keep width to 120mm to minimise loss of headroom)
b) 2m span (keep width to 120mm)
3) Roof Rafters: the roof currently has 50mm x 100mm rafters with 300mm centres, 34 degree slope, clay tiles. I want to remove a purlin in the middle and increase the span to 2.7m between purlins. How can we strengthen the existing rafters ideally without increasing the width. Could adding C24 (47mm x 100mm) work? Are there alternatives such as adding a steel flat bar to each rafter?
There is no change to there overall shape of the roof e.g. no dormers.
All calculations must adhere strictly to the British Standards (BS). A deep understanding of these standards and experience in similar projects is essential. Quality, precision and adherence to safety standards are of utmost importance.
Please let me know if you can provide additional information for a quote
1) Flitch Beams - dimensions of timber and steel (ideally 6mm), how many and size of bolts required and size of loadbearing plate
a)Beam 1: 4.1m span to support one half of a floor (3m span)
b)Beam 2: 3.16m span to support one half of a floor (2m span)
2) Floor Beams - need thickness of C24 grade timber, assuming 300mm centres (same as current ceiling joints). Floor beams do not need to support the ceiling below. Room is bedroom.
a) 3m span (keep width to 120mm to minimise loss of headroom)
b) 2m span (keep width to 120mm)
3) Roof Rafters: the roof currently has 50mm x 100mm rafters with 300mm centres, 34 degree slope, clay tiles. I want to remove a purlin in the middle and increase the span to 2.7m between purlins. How can we strengthen the existing rafters ideally without increasing the width. Could adding C24 (47mm x 100mm) work? Are there alternatives such as adding a steel flat bar to each rafter?
There is no change to there overall shape of the roof e.g. no dormers.
All calculations must adhere strictly to the British Standards (BS). A deep understanding of these standards and experience in similar projects is essential. Quality, precision and adherence to safety standards are of utmost importance.
Please let me know if you can provide additional information for a quote