Steel Beams – A Guide to Building Control Approval
The Building Regulations 2010 Statutory Instruments paragraph five requires that all building work should comply with the requirements of Schedule 1 of the Regulations. Find out more with our Guide to Building Control Approval.
A guide to Building Control approval for removal of load bearing walls. Part A of Schedule 1 governs the structural requirements that must be satisfied to comply or satisfy the requirements of the Regulations. Part A is split into parts A1 and A2. Part A1 is concerned with loadings on the building and requires that the building is constructed so the combined dead, imposed and wind loads are transmitted into the ground safely without causing deflection or deformation to impair the stability of the building. Part A2 is concerned with ground movement and requires that the building is constructed so that swelling, shrinkage or freezing of the subsoil, or landslip and subsidence will not impair the stability of the building.
The Approved Documents Part A Guidance
Approved Document A is a guidance document which gives ways to meet Part A requirements. If these empirical guides are followed the building will be deemed to comply. However, the guidance is limited and does not cover all eventualities and scenarios. When elements of structure fall outside of Approved Document A guidance then calculation is required to demonstrate compliance with Part A.
The most common scenario in domestic building projects where this occurs is removing internal loadbearing walls to create a larger habitable open plan living space. Another common scenario which we are asked to look at is when knocking through the external walls of a dwelling into new extensions or forming structural openings for bi-folding doors. When an element of structure requires support from another structural element, such as a loadbearing wall, and the loadbearing wall is removed. Then a structural support will be required in its place and structural calculations will be required to prove that the support is strong enough to carry the loadings.
It is usual practice to provide a structural steel beam seated on concrete pad stones to support the loads and structural elements above and to carry these loads into the foundations. In these instances Building Control will require steel beam calculations to justify the structural integrity of the steel beam and its supports.
In certain instances in addition to the structural steel beam, steel columns or engineering brick pillars are required to support the horizontal structural beam. Where the steel posts arrangement is provided, this is known as a ‘goal post’ arrangement and is used when no masonry support is either wanted or is not strong enough for the vertical loading. In some instances the steel columns also provide lateral stability to the building if excessive amounts of masonry are removed as in the diagram below. New pad foundations are required to be provided under the supporting steel columns.
We can provide you with the required steel beam calculations and pad stone calculations for your project for Building Regulation approval.
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