For additional stability you can also use steel joists that are built into one or both of the walls.
Flat roof steel beams.
Flat roof with no permanent access and altitude not exceeding 100m 0 75 kn m udl 0 9 kn point load most areas exceeding 100m but not exceeding 200m excluding parts of scotland pennines north east england refer to bs 6399 3 1 kn m udl 0 9 kn point load.
7 6 mm mass per metre.
This will give additional stability to the roof structure.
The figures are based on quality materials.
Metals depot stocks a wide range of steel beam sizes for thousands of applications.
Existing foundations are assumed to be adequate however this is subject to exposing the existing foundations and an inspection for the satisfaction of the building control officer.
The basic construction of a flat roof starts with roofing timber that is laid across two upright items usually two walls.
Structures that use steel roof beam construction usually have flat roofs but some smaller structures may have a peaked roof.
If one side of the roof is supported by the house and the other side is supported by the beam divide the total load by two as the beam is only supporting half of the roof.
Steel is cheaper than wood in most cases and it can handle a load much better but steel beams must usually be cut off site and trucked into a location whereas wood beams can readily be cut on site.
In areas with mild climates patio roofs are generally designed for loads of 30 psf pounds per square foot.
If there is also a beam in the middle of the roof divide the total load by three.
See more ideas about flat roof steel structure steel house.
Steel beams are heavy components and may require mechanical lifting aids.
Divide the total load according to how many supporting beams the roof will have.
Beam supporting flat roof joists project number calcs for date steel beam calculation you can add your own text diagrams and photos here beam details 152 x 89 x 16 ub s275 beam effective span length.
We also offer a selection of galvanized steel beams.
R cb150 16 beam span table used w 3600 width of frame rafter span χ 6410 fascia beam span the cb150 16 beam achieves the 6000mm span for the fascia beam and can be used for the rafters.
Attached flat roof 1ao page14.
All weak or damaged masonry is to be re built.
Jun 3 2017 explore anthony valentine s board flat roof on pinterest.
The tables below give maximum spans for rafters and beams.
Shop online for standard or cut to size lengths at wholesale steel beam prices.