The Window & Door Manufacturers Association (WDMA) Hallmark
Certification Program gives specifiers a method of identifying windows, doors
and skylights which are manufactured in accordance with WDMA standards.
The WDMA Hallmark is considered a mark of excellence among architects, contractors and
other specifiers and is accepted industry-wide. WDMA Standards are referenced by HUD/FHA in
their Minimum Property Standards and by many other government agencies in their construction
specifications. Any manufacturer who can demonstrate conformance to the WDMA standards
is eligible to participate in the Hallmark Certification Program. Conformance is determined by
in-plant inspection of the manufacturing facilities and by sampling and testing of products. The
manufacturer is issued a Certification number, along with marking devices for applying the
Hallmark to conforming products. Turncraft is the only major column and post manufacturer to
receive WDMA Hallmark Certification.
Using a precision splitting
template machine, columns
can be divided in halves
to be used as pilasters or
to be reassembled around
existing structural members.
Columns designed for
reassembly come with
realignment splines and
Architectural Columns are available in the following
plan types. Please specify when you order. Custom
plan types are also available.
The view of Renaissance authority
Scamozzi was that the lower diameter
of a top column should equal the upper
diameter of the column underneath.
The superior order should always be
placed over the inferior, that is Corinthian
over Ionic, Doric, Tuscan. The more
slender and elegant orders should
be placed over the stockier and more
solidly built if a top-heavy design is not
desired. An ancient example of this
descending order is the Colosseum in
Rome, which has at least four stories of