As part of our steel beam design service we prepare the structural calculations to specify the correct steel beam sizes to install for the client.
The next phase is removal of the load bearing rear wall and installation of temporary structural supports using heavy duty acrow props.
Installation of a 1No steel beams installed. Spec of 203 x 102 x 23 UB. This support beam was chosen as the wall above the ground floor was a a single skin constructed of solid break and the span of the beam was 3.1m.
Structural props remain in place to support the steel beam. These supports are loaded onto the existing foundation of the previously removed internal wall, providing good stability for the props during the curing process.
This allows the curing process of the engineering brick supports to settle with minimum shrinkage and movement across the span of the beam.
Above the steel beam, we dry pack the small gaps up to the first floor support with a semi dry, strong 2:1 cement mixture. This is compacted into the gaps between the beam and the first floor.
After curing for 24hrs, the support props can be removed surrounding the support beam, leaving the two acrow props in place under the support beam for a further 24hrs.
After the 24hr curing process all acrow props can be removed and the beam bares the weight of the first floor.
Internally, the steel beams are then lined with fire retardant board and the internal reveals are plaster skimmed.
The client had electricians onsite, so they were able to carry out sockets and light switch migrations, which is a service we normally offer as part of the steel beam installation.