Elements used in conjunction with LSF

When forming LSF structures other components/elements are required to create the finished structure. These elements need to be considered at the early design stage:

Substructure

LSF structures can be built on various substructures but can also be used on podiums and transfer slabs including under-crofts. Loads imposed from the LSF structure can be accommodated by the substructure below.

When LSF components are in contact with the substructure a DPC must be used to protect the underside of the steel frame.

Communal areas/Access

LSF walls are used to form communal areas, lift shafts and stairwell walls. These walls are formed as outlined before but will also need additional components to accommodate lifts and stairs in the structure.

In lifts, channels for attaching the doors and restraints to the lift car are built into the lift shaft walls. In stairs, additional fixing points are required for the stair risers, landings, handrails and balustrades.

NOTE: Free standing hot rolled steel (HRS) frame or concrete lift shafts can also be used as an alternative to LSF lift shafts.

Acoustic enhancements

LSF floors/ceilings do not always provide the acoustic performance required, particularly when used as separating floors. Floating floors and acoustic ceilings can be added to the build up to enhance acoustic performance.

MEP installation

Full MEP installation can be included within the LSF design, with the option for service holes to be included in the steel components. Early engagement of the MEP Designer/Consultant to identify the service runs means that the service runs can be accommodated at concept stage.

Applied to the exterior of the structure

Components such as canopies can be fixed through the external façade and solar panels/PV’s may be added to the roof. The LSF structure can accommodate these provided they are identified at the onset of design.

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