These structural calculations are based upon
information provided by the client, should any variation
between site conditions and the information provided by
the client be identified, these calculations will be void.
Construction work not to be started until calculations
have been approved by Building Control.
All construction work should be carried out by a
The builder is responsible for all temporary supports
and is to ensure that the structure is adequately
supported during the works.
Steel beams are heavy components and may require
mechanical lifting aids.
All weak or damaged masonry is to be re-built.
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.
Steel beam end bearings not to be located directly
above existing lintels or openings.
Where steel beam end bearings are located above new
lintels, the lintel manufacturer's permission will be
Steel beam end bearings not to clash with or be located near the
end bearings of existing beams or existing lintels.
Steel beam end bearings to be located on substantial load
bearing masonry walls or piers. Plan area of bonded masonry
supporting steel beam to be greater than or equal to 0.1m2.
The minimum end bearing length at supports to be 100mm.
Supporting masonry to comply with BS5628.
Steel beams to be encased in fireline board to achieve 1/2 hour
fire resistance in accordance with manufacturer's
No point loads or concentrated loads are to be applied to the steel
The ends of every load bearing wall should be bonded or
otherwise securely tied throughout the full height of the wall to a
buttressing return wall, the return wall should not be less than
Walls exceeding 9m long should be provided with intermediate
buttressing support (wall, pier, chimney). Intermediate buttressing
walls should not be less than 550mm long.
Buttressing end return walls and intermediate buttressing
supports should be provided in accordance with Approved
Document 'A', which can be downloaded from the following
For more details please click here to see drawing
showing allowable layouts.