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A J Balfour Associates
Consulting Civil and Structural Engineers

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Multi Storeys


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Practice Information
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Multi-storey Blocks

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  • High rise properties present unique problems in terms of their structural capabilities and shortcomings as well as in matters of maintenance and management.
  • All blocks are subject to cyclic maintenance and require periodic monitoring inspections. These exercises are most speedily and economically carried out by suspending access cradles onto the face of the building supported by rigging erected on the flat roof deck.
  • In recent times many blocks have been over roofed against water ingress and condensation caused by cold bridging.
  • This has removed the opportunity for cradle access and leaves building owners faced with the expensive options of masted platforms or fixed scaffolds for even the most routine tasks.
  • When, in 1991, we were first approached to design such a roof, we appraised our Clients of the drawbacks of existing systems and established that they were keen to maintain the facility for cradle access.
  • We then designed a system of over roofing which still encapsulates and insulates the block but allows cradles to be erected when required.
  • This is achieved with no sacrifice in choice of form, colour or long term low maintenance. The structural steel framework is strong and versatile; the aluminium sheeting is virtually corrosion free and colour choice almost unlimited.
    How is this achieved

Asbury/Belmar Court, Linwood 0.42m

Two 18 storey brick clad blocks.

Commission to over roof these two blocks won following fee tender.

Design Period April -August 1995

Construction period - January 1996 - July 1996



Carron Street Phase 2, Glasgow 0.3m

Two 15 storey brick clad blocks.

Roof incorporated dormer features on all elevations.

Constructed - February to September 1992

Shaftesbury Street, Glasgow 0.23m

An 18 storey Bison Wallframe block situated close to Charing Cross and overlooking the Kingston Bridge in Glasgow City Centre.

Close liaison with the City Planners was required before adopting a high domed roof for this sensitive location.

Constructed - September 1992 to May 1993

block k
Carron Street Phase 3, Glasgow 0.15m

A plain hipped end roof this, the last of four blocks, reflected the design of the original block but incorporated our system for cradle access.

Constructed - December 1992 to May 1993


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A J Balfour Associates
Last modified: April 03, 2009