283757893275

432 Barry’s Advanced Construction of Buildings
Brick and concrete block cavity
wall built in structural frame as
stone facing is fixed
Restraint cramp
Bonder course at
each floor as support
for stone facing
Compression joint
min. 15 mm under
bonder course
Dovetail slot cast into
concrete for dovetail
cramp and dowel
Compression joint
above back-up wall
Restraint fixing
for stone facing
Fishtail cramp built
into brick wall as
cramp and dowel
restraint fixing
Open cavity behind
stone facing
Figure 7.14 Stone bonder courses. Insulation would be positioned within the cavity,
applied to the internal face of the stone or on the internal face of the wall.
system is that the thermal resistance of the bonder course and beam will be less than that
of the walling and so act as a thermal break.
Today, it would be unusual to construct the internal leaf using a cavity wall, but cladding
may be fitted to an existing cavity wall in refurbishment. Nowadays a steel cladding frame
would be used, providing a structure on to which the stone can be hung and supported
and in which insulation could be housed.