How to Size a Fiberglass Pergola Kit – pdf

How to select your fiberglass pergola
Use this worksheet to configure your fiberglass Williamsburg pergola.
Checkboxes indicate items where a selection is necessary.
Step 1: Select pergola attachment
Attached Pergola
An attached pergola has two columns supporting a double beam on one
side and a ledger attached to a structure to support the rafters on the
opposite side.
Width
Projection
24”
18”
20”
4
Figure 1.1
Attached Width
2
24”
20”
18”
5
3
Column Height
Column Height
Column Height
3
2
4
Projection
1
Width
18”
18”
3
1
24”
1
3
2
Column Height
1
24”
Freestanding Pergola
A freestanding pergola has four total columns, two columns supporting
double beams on each side of the pergola.
4
20”
2
4
Slope
Figure 1.2
Attached Projection
Figure 1.3
Freestanding Width
Figure 1.4
Freestanding Projection
Pergola Component Key
1. Stringer: 1¾” x 1¾” spaced approximately 12” on center
2. Rafter: 2” x 8” spaced approximately 24” on center
3. Beam: 2” x 8” double beam
4. Column: Selection of six structural fiberglass column styles
5. Ledger: 2” x 8” (attached model only)
WIDTH
Step 2: Select overall pergola size and model
Attached/
Freestanding
Williamsburg pergola dimensions are measured by the overall size of the top structure:
12’
16’
18’
22’
26’
11’/12’
Width = Beam length (Figures 1.1 & 1.3)
Projection = Rafter length (Figures 1.2 & 1.4)
13’/14’
PROJECTION
When measuring, be sure to note upper dimensions as well as column locations. Beams cantilever
24” from the center of columns (Figure 1.2) and rafters cantilever 20” from the center of columns
(Figure 1.1). The amount of cantilever can be adjusted during installation.
Rafter Count - Width (Rafters) - 12’ (6), 16’ (8), 18’ (9), 22’ (11), 26’ (13)
Stringer Count - Projection (Stringers) - 11’ (10), 12’ (10), 13’ (12), 14’ (12), 15’ (14), 16’ (14), 17’ (16), 18’
(16), 22’ (20), 25’ (24), 26’ (24).
Figure 1.5 shows kit sizes for both attached and and freestanding models.
15’/16’
17’/18’
21’/22’
25’/26’
Figure 1.5
Available Sizes
Step 3: Select column style, size, & attachment
1.
2.
3.
Height - Available with 8’ or 10’ high structural fiberglass columns,
which can be cut down on site. Add 18” to the height of the column to
accommodate for the beam, rafter, and stringer (Figures 1.1-1.4). For
attached models, the height of the bottom of the ledger can be found by
adding the column height plus 8” for the beam. Remember to take any
slope of the mounting surface into consideration when measuring.
Style - See Figure 1.6 for column selection.
Attachment - Our exclusive Tension RodTM mounting system allows
Williamsburg pergolas to withstand up to 160MPH wind loads, does not
require wood or metal inserts in the columns, and is easy to install. Choose
from concrete or deck mounting kits.
Concrete Mounting Kit
Deck Mounting Kit
Figure 1.6
Fiberglass Column Selection
12” x 10’ HIGH
ROUND TAPERED
COLUMN
10” x 8’ HIGH
ROUND TAPERED
COLUMN
10” x 8’ HIGH
SQUARE TAPERED
COLUMN
10” x 8’ HIGH
SQUARE
COLUMN
8” x 8’ HIGH
SQUARE
COLUMN
8” x 8’ HIGH
SQUARE
COLUMN W/ BASE
Step 4: Select ColorLastTM Paint Color
Structureworks fiberglass pergolas come standard with our exclusive ColorLast finishing
process, allowing you to coordinate your pergola with your decking and railing or even your
home trim. Our ColorLast paint is resistant to scratches and chips, protected by a 20 year
warranty, and is offered in 12 standard colors (Figure 2.1) to coordinate with your design. All
pergola components can be finished traditionally in a single color, or multiple colors for a
more dynamic look. Finish may be custom matched to any color desired.
TH
TT
CS
FP
VL
GP
RS
BD
ROPE SWING
SR
HG
LR
W
I would like to specify a custom paint color
Figure 2.1
ColorLast Paint Colors
Step 5: Select ShadeRightTM Fixed Canopy HD (Optional)
ShadeRightTM Fixed Canopy HD
The ShadeRight fixed polycarbonate canopy (Figure 2.3) is a watertight system that protects your
outdoor space from both sun and rain, while still providing an attractive addition to your Williamsburg
Pergola.
Figure 2.3
ShadeRight Fixed Canopy HD
Custom Fiberglass Pergolas
Custom sizes and shapes are no problem with fiberglass pergolas. If our
standard sizes don’t fit, fiberglass pergolas can be custom built to meet almost
any design specification. Whether it is a unique area in your backyard or a
commercial project, fiberglass pergolas offer versatility and strength that can
be customized to meet your needs. Provide us with your own design, or let our
experienced staff assist you in designing a custom fiberglass pergola.
Custom designs can be as simple as a standard kit modified to fit your project
perfectly, to a one of a kind structure with unique beams, rafters, and stringers.
Custom configurations are also possible, giving you even more creative
control. Fiberglass pergola components will meet the look and structural
requirements you need, while maintaining the refined style and unbeatable
quality of our fiberglass pergolas.
3300 Dill Smith Drive
Fredericksburg, VA 22408
877.489.8064
www.structureworksfab.com
v.6-15