7
CLEARSPAN
™
POLY BUILDINGS
Revision date: 05.19.09
LAY OUT THE BUILDING SITE
Review the previous Location and Site information before
you begin construction of the pony wall.
You (and your contractor, if any) are responsible for
providing a pony wall suitable for the shelter, the soil
conditions, and weather (including but not limited to wind,
rain, snow, frost, and ice, etc.). Depending on location,
climate and weather, timbers or other posts may need
to be cemented into the ground at least 4' to prevent
movement caused by frost and other weather related loads.
Consult the building codes (if any) for your area before
you construct the pony wall. Consult a qualified contractor
before you begin construction of your pony wall.
ATTENTION:
To install and secure the cover properly, the
rafters must be positioned to the outside edge of the pony
wall. This allows the main cover to drape evenly down the
side of the pony wall where it is secured to ratchets.
Read the following before you begin pony wall construction:
•
Width:
The recommended width of the pony wall for
a 20' wide building is 20' 6" to 21' (outside-to-outside).
Wall must accommodate the 20' on-center width of the
rafters without being too wide to interfere with cover
installation. See pony wall thickness comment below.
•
Length:
The length of the pony wall should be the
shelter length (20', 25', 30', 35' or 40') plus an additional
6"-12" to accommodate the dimensions of the mounting
feet, which extend beyond the end rafters.
• The top of the pony wall must be level. The building
frame will not assemble properly if the top of the pony
wall is uneven.
• Pony wall thickness: The thickness of the pony wall
must provide a surface for the entire mounting base of
each rafter foot. See the diagram to the right.
REMEMBER:
The cover of the building is attached to
the outside of the pony wall. Position rafters as close to
the outside edge of the pony wall as possible.
• The pony wall must support the load created by the
shelter plus the additional loads imposed by the wind
and other elements. Concrete, large pre-cast concrete
blocks, or 8" x 8" (or larger) timbers (to accommodate
the rafter mounting feet) are all acceptable materials
when constructing the pony wall.
• Standard and approved building techniques are
required. You must observe and adhere to all local and
national building codes and requirements. Consult a
professional contractor when in doubt.
• Due to the characteristics of the pipe (including bend
radius) and the design of the shelter, there are often
variations in the width and height of the building.
Covers and end panels purchased or supplied with
the shelter include sufficient material to accommodate
these variations.
104301
Rafter Foot
5 1/2"
4"
ATTENTION:
The procedures that follow describe
assembling each rafter, attaching the rafter feet (see
diagram above), and then setting the rafters in place to
assemble the frame.
Depending on the application, the pony wall, and personal
preference, the builder/owner may want to space and
attach the rafter feet to the pony wall first and then secure
each rafter to each set of anchored rafter feet to assemble
the frame.
Review all diagrams before you begin.
In either case, the customer is responsible for supplying the
fasteners to secure the rafter feet to the pony wall structure.
