GROWSPAN
™
ROLLING PREMIUM HIGH TUNNELS
20
Revision date: 01.01.16
11. Set the next interior rafter in place and install the castors and lower pipes. Repeat the steps to install the purlins.
Slide the plain end of the purlin pipe onto the swaged end of each installed purlin. Secure each purlin pipe joint
using an FA4482B Tek screw.
FRAME ASSEMBLY (continued)
10. Move to the remaining purlin positions and repeat steps 6-8 to install those pipes. Remember to use the jig to
space the rafters. If a jig is not present, use a tape measure to space the rafters.
Spacing is 4' on-center.
End of Purlin
Pipe
