Installation Instructions

P. 9
FIGURE 2
(
CONTINUED
)
Typical P3 Floor Joist Framing and Construction Details
All nails shown in the details below are assumed to be common nails unless otherwise noted. 10d box nails
(0.128 x 3”) may be substituted for 8d common (0.131 x 2-1/2”) as shown in details. Individual components are
not shown to scale for clarity.
1. Wipe any mud, dirt, water, or ice from P3 Joist flanges before gluing.
2. Snap a chalk line across the P3 Joist four feet in from the wall for panel edge alignment and as a boundary
for spreading glue.
3. Spread only enough glue to lay one or two panels at a time, or follow specific recommendations from the
gluemanufacturer.
4. Lay the first panel with tongue side to the wall, and nail in place. This protects the tongue of the next panel
from damage when tapped into place with a block and sledgehammer.
5. Apply a continuous line of glue (about 1/4” diameter) to the top flange of a single P3 Joist. Apply glue in a
winding pattern on wide areas such as with double Power Joists.
6. Apply two lines of glue on P3 Joists where panel ends butt to assure proper gluing of each end.
7. After the first row of panels is in place, spread glue in the groove of one or two panels at a time before laying
the next row. Glue line may be continuous or spaced, but avoid squeeze-out by applying a thinner line (1/8”)
than used on P3 Joist flanges.
8. Tap the second row of panels into place, using a block to protect groove edges.
9. Stagger end joints in each succeeding row of panels. A 1/8” space between all end joints and 1/8” at all edges,
including T&G edges, is recommended. (Use a spacer tool or an 8d common nail to ensure accurate and
consistent spacing.)
10. Complete all nailing of each panel before glue sets. Check the manufacturer’s recommendations for allowable
cure time. (Warm weather accelerates glue setting.) Use 6d ring- or screw-shank nails for panels 3/4” thick
or less and 8d ring- or screw-shank nails for thicker panels. Space nails per Table 3. Closer nail spacing may
be required by some codes or for diaphragm construction. The finished deck can be walked on right away
and will carry construction loads without damage to the glue bond.
NOTES
1. Special conditions may impose
heavy traffic and concentrated loads
that require construction in excess of
the minimums shown.
2. Panels in a given thickness may
be manufactured in more than
one allowable span. Panels with an
allowable span greater than the actual
joist spacing may be substituted for
panels of the same thickness with
an allowable span matching the
actual joist spacing. For example,
19/32-inch-thick Sturd-I-Floor 20 o.c.
may be substituted for 19/32-inch-
thick Sturd-I-Floor 16 o.c. over joists
16inches on center.
3. Use only adhesives conforming
to APA Specification AFG-01 or
ASTM D3498. Apply adhesives in
accordance with the manufacturer’s
recommendations. If OSB panels with
sealed surfaces and edges are to be
used, use only solvent-based glues;
check with panel manufacturer.
4. 8d common nails may be substi tu-
ted if ring- or screw-shank nails are
not available.
5. The recommended minimum thick-
ness for use with P3 Joist.
IMPORTANT NOTE
Floor sheathing must be field glued
to the Power Joist flanges in order to
achieve the allowable spans stamped
on the product. If sheathing is nailed
only, reduce Power Joist spans in
Tables 1 and 1a by 1’-0”.
TABLE 2
APA Rated Sturd-I-Floor Fastener Schedules for PJIs
1
Maximum
Joist Spacing
(in.)
Panel
Thickness
2
(in.)
Fastening: Glued-Nailed
3
Nail Size
and Type
Maximum Spacing (in.)
Supported Panel Edges Intermediate Supports
16 23/32
5
6d ring- or screw-shank
4
12 12
20 23/32
5
6d ring- or screw-shank
4
12 12
24
23/32, 3/4 6d ring- or screw-shank
4
12 12
7/8 8d ring- or screw-shank
4
6 12
12”
1/8” gap between top
flange and filler block
Offset nails from
opposite face by 6”.
Filler block
2p DOUBLE P3 JOIST CONSTRUCTION DETAIL
Filler Block Requirements for Double P3 Joist Construction
NOTES
1. Support back of I-Joist web during nailing to prevent damage to web/flange connection.
2. Leave a 1/8” gap between top of filler block and bottom of top I-Joist flange.
3. Filler block is required between joists for full length of span.
4. Nail joists together with two rows of 10d nails at 12” o.c. (clinched when possible) on each side of the double P3 Joist.
Total of 4 nails per foot required. If nails can be clinched, only 2 nails per foot are required.
5. The maximum load that may be applied to one side of the double joist using this detail is620 lbf/ft.
Flange Width Net Depth Filler Block Size
2-1/2”
9-1/2”
11-7/8”
14”
16”
2-1/8” x 6”
2-1/8” x 8”
2-1/8” x 10”
2-1/8” x 12”
3-1/2”
11-7/8”
14”
16”
3” x 8”
3” x 10”
3” x 12”
3-1/2”
18”
20”
22”
24”
3” x 14”
3” x 16”
3” x 18”
3” x 20”