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Step 5: Back Frame Assembly
Note: Pre-drill all holes using a 1/8" drill
bit before installing the lag screws.
A: Attach (OR9) Floor Back to (OR8) Side Joist with 2 (H3) 1/4 x 2-1/2 Hex Bolts (with flat washer, lock washer
and t-nut) and 2 (S7) 12 x 2" Pan Screws (with flat washers) as shown in fig. 5.1.
Fig. 5.1
H3
B: Attach Floor Back Assembly from Step A to both (F13) Posts with 2 (H5) 1/4 x 4-1/2" Hex Bolts (with lock
washer, flat washer and t-nut) through (OR9) Floor Back. Notice the hole orientation towards bottom of board.
(fig. 5.2 & 5.3)
C: Square and attach (F9) Front Back flush to the bottom and outside edge of (F13) Posts with 2 (LS3) 1/4 x 3"
Lag Screws (with flat washer) in the top, pre-drilled holes and 2 (S7) 12 x 2" Pan Screws (with 3/16" flat washer)
in the bottom holes as shown in fig. 5.2 & 5.3.
D: Tighten all bolts.
Fig. 5.2
F13
Wood Parts
1 x
Front Back 1 x 5 x 46-5/8"
F9
1 x
Side Joist 2 x 2 x 43"
OR8
1 x
Floor Back 5/4 x 4 x 46-3/4"
OR9
Predrill Pilot Holes for Lag Screw
Lag
Screw
Flat
Washer
OR9
S7
H5
OR9
Notice hole
location towards
bottom
F9
LS3
S7
4 x
S7
#12 x 2" Pan Screw (with 3/16" flat washer)
2 x
H5
1/4 x 4-1/2" Hex Bolt (1/4" lock washer, 1/4" flat washer, 1/4" t-nut)
2 x
H3
1/4 x 2-1/2" Hex Bolt (1/4" lock washer, 1/4" flat washer, 1/4" t-nut)
2 x
1/4 x 3" Lag Screw (1/4" flat washer)
LS3
Predrill 1/8"
pilot hole
Use factory drilled
hole as a guide
OR8
H3
H5
F13
Note: Some
boards removed
for clarity
Hardware
15
Hex Bolt Assembly
Lock
Washer
Flat
He x
Washer
Bolt
Fig. 5.3
T- Nut
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