Cantilevered Stairs UK | Installation
349025
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Installation

Early Use During Construction

One of the great advantages of this cantilevered system is that temporary cantilevered metal treads are available to hire. If using the reinforced concrete wall installation method, these treads can be fitted as soon as the form work has been removed.

 

Temporary posts and rails are available to fit these treads to give safe site barrier protection.

 

As the treads are only fixed to the wall, flooring work can also be carried out uninterrupted. Once all construction and decorations have been completed, the temporary metal treads can be removed and the bespoke cantilevered treads fitted, ensuring the risk of damage is kept to a minimum.

Fixing methods

There are a number of tread fixing methods available, depending on the overall construction of the building.

Pocket fix

 

Steel reinforced concrete wall

  • 1

    STAGE 1

    Before site construction work can start, the make-up, construction and stability of the stairwell walls must be agreed. These walls must be suitable to support the chosen cantilever installation method.

  • 2

    STAGE 2

    Prefabricated anchoring pockets are mounted within the form work before the concrete is poured.

  • 3

    STAGE 3

    Installation of the steel reinforcing bars and completion of the form work.

  • 4

    STAGE 4

    Pour the concrete into the form work.

  • 5

    STAGE 5

    After sufficient curing time, the formwork can be struck and the pockets checked for any concrete ingress. If any found, it is best to remove it at this stage.

  • 6

    STAGE 6

    Temporary cantilevered metal treads are available to hire and can be fitted once the form work has been removed and the concrete has cured sufficiently. This will allow safe access for the construction process of the building to continue.

  • 7

    STAGE 7

    If the wall finish is a fair faced one, the pre-finished treads can be fitted, just prior to the occupation on the building. The wall may have a plastered or stone clad finish. In this case, short end blanks can be supplied to be used as a guide to be able to almost finish the walls. The pre-finished treads can then be fitted once the majority of the wall finish has been completed.

  • 8

    STAGE 8

    Installation of the pre-finished treads. Final wall finishes completed around the treads. Staircase complete.

Side  fix

 

10 Newton HIGH DENSITY CONCRETE BLOCK WALLS or R.C.CONSTRUCTION WALLS are required. EXISTING OR TO BE BUILT. To be used with CERTAIN CONDITIONS.

  • 1

    STAGE 1

    Before site construction work can start, the makeup, construction and stability of the stairwell walls must be agreed. These walls must be suitable to support the chosen cantilever installation method.

  • 2

    STAGE 2

    Construction of the walls as agreed.

  • 3

    STAGE 3

    Prior the stairwell being completed, installation of the pin pockets to take place. Depending on the chosen wall finish, short end blanks can be supplied to be used as a guide to almost pre-finish the walls. The pre-finished treads can then be fitted once the majority of the wall finish has been completed.

  • 4

    STAGE 4

    Installation of the pre-finished treads. Final wall finishes completed around the treads. Staircase complete.

Plate fix

 

Timber stud partition wall

  • 1

    STAGE 1

    Before site construction work can start, the makeup, construction and stability of the stairwell walls must be agreed. These walls must be suitable to support the chosen cantilever installation method.

  • 2

    STAGE 2

    The solid constructed timber stud walls are erected.

  • 3

    STAGE 3

    A steel string with a foot plate anchor is attached to the floor beneath the floor finish. A top blade is incorporated into the upper floor edge structure and the steel string is fixed to the solid constructed timber stud walls.

  • 4

    STAGE 4

    Prior to the stairwell being completed, the pre finished treads require attaching to the steel string wall reinforcing plate. Once this has been done and the treads have been correctly protected the walls can have their finish applied. The cantilevered stair is then complete.

Sidebar fix

 

Top and bottom fixing only

  • 1

    STAGE 1

    Before site construction work can start, the make-up, construction and stability of the stairwell walls must be agreed. These walls must be suitable to support the chosen cantilever installation method.

  • 2

    STAGE 2

    The main fabric of the building is constructed.

  • 3

    STAGE 3

    A steel box string with a foot plate anchor is attached to the floor beneath the floor finish and a top blade is incorporated into the upper floor edge structure. The steel box string can, if required, be incorporated into the wall structure. Often as part of a party wall sound reduction scheme using a stud and plasterboard system.

  • 4

    STAGE 4

    Prior to the stairwell being completed, the pre finished treads require attaching to the steel box string. Once this has been done and the treads have been correctly protected the walls can have their finish applied. The cantilevered stair is then complete.