| Masonry Veneer
Construction
There are numerous methods
that have been developed to secure masonry veneer to a structural back-up.
Building codes have adopted some of the better and safer systems as they
evolved and became standardized. Currently most building codes recognize
two basic methods to install masonry veneer. The first of these methods,
called adhered veneer, secures the masonry units to the structural back-up
using a bonding material. The second method, anchored veneer, attaches the
masonry to the structural back-up using mechanical fasteners called wall
ties or anchors.
VENEER is by definition, a non-load bearing, non-structural (except
for supporting their own weight), facing of brick, concrete, stone, etc.
attached to a back-up for the purpose of ornamentation, protection or
insulation. That said, it is therefore unnecessary to use high strength
mortars. Instead, workable mortars with high bond properties are
preferred. Accordingly, most veneers are set in either Type N or Type S
portland cement-lime mortars. Type M mortar should never be used as it is
too hard.
Because most applications for cast stone are intended to accent brick, the
design of the cast stone units are typically determined by the type of
brick specified. When designing cast stone units which utilize dimensions
of the specified brick, the mason is able to execute the same coursing for
all masonry units throughout the installation. The finished result is a
successfully integrated and orderly combination of masonry veneer units
which is appealing to the eye.
The following tables have been prepared as guidelines when designing cast
stone shapes that will be incorporated with brick. These tables are not
all-inclusive but do account for the majority of the fired clay masonry
units used today. |
