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Scaffolding, Façade Retention and Demolition 47
Rigid frame designed to resist
lateral loads
Upper scaffold designed as a
fully braced frame to transfer
lateral loads to rigid portal
framed pavement gantry
Fully braced frame acts as
vertical cantilever
Trussed to resist lateral load
(a) Internal support provided by
new frame
(b) External support: steel tube
scaffold.
(c) External support: proprietary
support system
Figure 2.16 Façade retention internal and external façade support.
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Outside the curtilage of the existing building – external support
Inside the curtilage of the existing building (behind the façade) – internal support
Both external and internal to the existing building – part internal and part external
Figure 2.16 and Figure 2.17 provide examples of external, internal and part internal–part
external façade retention systems. Each support system is designed specifically to suit
the façade that is being supported and the process used to construct the new building. As
well as supporting the walls of the façade, it may also be necessary to support adjacent
buildings that previously relied on the support from the original building. Photograph
2.21a and b shows flying shores that provide support to the external façade and the adjacent
building.
Various methods of retaining the façade and constructing the new works are used (see
Photograph 2.22, Photograph 2.23 and Photograph 2.24). This is a specialist field, so a
summary of the principal issues that must be addressed is provided as follows: