SHELTER SIZE

The Columbia design is an octagon and the size of the shelter refers to the distance across the shelter along the hip beam line which would be: the corner to corner width. For example, a 45’ Columbia shelter measures 45’ corner to corner. Custom sizes are also available.

THE Columbia PACKAGE COMPONENTS
 

BEAMS:
Laminated wood hip beams, perimeter beams, and the interior purlin ring beams. Steel connections and bolts that connect the beams to each other and to the columns.

ROOF DECKING:
2x6 or 2x8 (nominal sizes) #1 grade, Southern Yellow Pine wood decking, tongue and groove and end-matched, is nailed to the top of the beams. Galvanized nails to attach the deck to the hip beams, perimeter beams, and the purlins.

FASCIA BOARDS:
2x6 pressure treated, #1 grade, Southern Yellow Pine, fascia board to be attached at the eaves. Galvanized nails to attach the fascia to the beam ends and the deck.

FELT & SHINGLES:
One layer of #30 roofing felt to be applied on top of the wood deck. 25 yr. 3-Tab fiberglass shingles, standard color Autumn Brown, other color options available upon request. Metal roof available upon request.

ROOF PITCH
The standard roof pitch for the Columbia is a 6/12 pitch. A roof pitch up to 8/12 can be provided.

DESIGN LOADS
The typical design load allows for:
12 pounds per square foot dead load
30 pounds per square foot live load
20 pounds per square foot wind load. (Equates to 100 MPH)

There are variables that affect the design sizes of the members, specifically the columns and the beams, and those variables generally include live load conditions that are usually location specific. Building Codes normally dictate the applicable loads to be applied in the member size designs.

PRESSURE PRESERVATIVE TREATMENT
As noted in the component list above, the laminated wood columns are fabricated with lumber pressure treated prior to gluing with Penta-WR type “C”, at .6 pcf [6 tenths of a pound of preservative per cubic foot of wood] retention for “ground contact”). For applications where the treated member is not in ground contact, the treatment retention is .3 pcf. The fascia boards are treated with pentachlorophenol, and the .3 pcf retention is used.
EnWood utilizes the pentachlorophenol treatment because of its premier qualities and the treatment does not discolor the wood and can be stained or painted.

FOR DETAILED SPECIFICATIONS,
PLEASE CLICK ON THE SPECIFICATION LINK
 

45'     50'     55'     60'     70'

Custom Sizes & Designs Available

Roof Framing - 40' Columbia