13
GROWSPAN
™
GOTHIC PRO GREENHOUSES AND SYSTEMS
Revision date: 06.20.18
18. Secure the purlin pipe joint with a Tek screw.
19. Repeat the above steps as needed to stand and secure
the remaining interior rafters and purlins to complete
the frame assembly.
20. Slide a band clamp onto each leg of the remaining
end rafter, secure the rafter to the ground posts, and
attach the purlins to it. Verify that the end clamps are
positioned with the nut and bolt to the inside of the
assembled frame. Refer to the Quick Start section and
previous diagrams if needed.
NOTE:
If the last end rafter is plumb and the purlin
extends beyond the end of the rafter, cut the last
section of purlin pipe to the required length.
FRAME ASSEMBLY (continued)
Dashed line shows
ground level.
Frame shown may differ slightly from actual frame.
21. Once all rafters are set and all purlins are in place and
secure, return to each pipe splice of each purlin and
verify that a Tek screw is installed. Install a Tek screw if
needed.
22. Remove any temporary bracing (if needed) and install
the baseboards and the side struts.
BASEBOARD INSTALLATION (RECOMMENDED)
The baseboard (strongly recommended) is supplied by the
customer and is attached at ground level along both sides
of the frame. It helps keep the ground posts in place and
also prevents the frame from working into the ground when
anchored.
Attach the baseboards to the frame on the outside of the
ground posts at this time.
Gather the Parts
• Treated or recycled plastic lumber (supplied by
customer).
• 1/4" x 4" Carriage Bolts and 1/4" Nuts
NOTE:
The following procedure describes one way to
install the recommended baseboards. The size and
type of the baseboard chosen may require the use of
alternative steps. When properly installed, baseboards
run the length of the frame.
NOTE:
The boards should be at ground level or slightly
into grade to prevent the shelter from sinking and to
create a seal along the bottom. After installing the
baseboards, continue with these instructions.
Ground
Level
Inside of
Shelter
Outside of
Shelter
On the outside of the frame, attach the first baseboard to
the ground posts using the 1/4" x 4" carriage bolts and
nuts. Continue adding baseboards to complete the first run.
Splices are made between posts as shown. Use a short
section of baseboard to secure separate baseboards at a
splice.
If the recommended baseboard (customer-supplied) is not
used, secure the required diagonal struts to the ground
post using a Tek screw or other customer-supplied fastener.
The installation of the diagonal struts is described as
follows.
