structural calculations are prepared based on a site visit from our surveyor. Based on these working items we procure the correct steel beam ready for removal of the chimney breast.
The chimney breast is constructed of solid brick work. The chimney breast unit was supported to the ground with a small foundation casted with construction of the original house, most likely in the 1920’s.
The loadings presented onto the existing chimney breast unit were the first floor breast above and the rock chimney stack.
We precede with removal of the chimney breast unit and temporary structural supports erected to support the first floor beast units above with structural acrow props.
Installation of 1No 152 x 122 x 30 UB steel beam per structural engineer’s specifications.
In this particular case, the steel beam had to connect at one end to an existing 152 x 152 x 30 UB steel beam. The connection was made with L flange plates and M16 nut and bolts. The new steel beam require fabrication onsite to notch out the connection in accordance with the engineer’s connection specifications.
The second end of the beam was loaded onto the flank wall of the property on pre-stressed concrete pad stones.
The top of the beam is then packed with a dry mix of cement mortar to bridge the small gaps between the steel beam and the base of the first floor chimney breast. This provides a good good spread of the load from the chimney breast above onto the steel beam in situ.