Lightweight Design Flexibility Simple to Install y Resource Friendly
for Residential Floor Systems
Dimensionally Stable
I - J OISTS
The Wide Flange Solution
Lightweight, Easy to Specify & Install! Perma-Straight I’s are the ideal choice for high quality residential floor systems. They offer designers and builders consistent performance for the most demanding applications. Perma-Straight I’s offer longer lengths that give designers the freedom to design more open space into their projects, reducing the need for supporting walls, columns, and beams. Builders like them because they allow multiple span installations without the need to lap joists over bearing walls or support beams – saving time and money. Webs are easily cut onsite for mechanical pass through. There are
fewer pieces to handle, and PermaStraight I’s can be cut and fastened with traditional framing tools and fasteners. Plus, they weigh much less than comparable conventional lumber! Framers appreciate the extra-wide nailing flange; 2-1/2" or 3-1/2", compared to other manufacturers’ 1-1/2" width. Perma-Straight I’s won’t warp, twist or shrink, and offer more uniform dimensions than sawn lumber joists.
The Choice of Designers, Builders & Framers! Look for the APA/EWS trademark. It ensures superior I-joist quality & consistent performance...
Allowable Spans for APA/EWS Performance Rated I-joists
▲ ▲
L/360 Live Load • Glue/Nailed Floors • Allowable Spans 40 psf LL + 10 psf DL SIMPLE SPAN
MULTIPLE SPAN
Depth
Designation
12" oc
16" oc
19.2" oc
24" oc
12" oc
16" oc
19.2" oc
24" oc
9-1/2”
PRI-40 PRI-60
19'-11" 21'-0"
17'-3" 19'-2"
15'-9" 18'-1"
14'-1" 16'-6"
19’-10" 22’-10"
17’-2" 20’-2"
15’-8" 18’-5"
14’-0" 16’-5"
11-7/8” PRI-40 PRI-60 PRI-80
23'-1" 25'-0" 27'-7"
19'-11" 22'-11" 25'-1"
18'-2" 21'-5" 23'-8"
16'-3" 19'-1" 22'-2"
23’-0" 27’-0" 30’-0"
19’-11" 23’-4" 27’-4"
18’-2" 21’-4" 25’-5"
16’-2" 19’-1" 21’-10"
14”
PRI-60 PRI-80
28'-5" 31'-3"
26'-0" 28'-6"
23'-9" 26'-11"
21'-2" 25'-2"
30’-0" 34’-1"
25’-11" 30’-10"
23’-8" 28’-2"
19’-9" 23’-11"
16”
PRI-60 PRI-80
31'-7" 34'-8"
28'-2" 31'-7"
25'-9" 29'-9"
23'-0" 25'-5"
32’-6" 37’-10"
28’-1" 33’-6"
24’-9" 30’-0"
19’-9" 23’-11"
▲ ▲
L/360 Live Load • Glue/Nailed Floors • Allowable Spans 40 psf LL + 20 psf DL SIMPLE SPAN
MULTIPLE SPAN
Depth
Designation
12" oc
16" oc
19.2" oc
24" oc
12" oc
16" oc
19.2" oc
24" oc
9-1/2”
PRI-40 PRI-60
18'-2" 21'-0"
15'-9" 18'-6"
14'-4" 16'-10"
12'-10" 15'-1"
18'-1" 21'-4"
15'-8" 18'-5"
14'-3" 16'-9"
12'-9" 14'-2"
11-7/8” PRI-40 PRI-60 PRI-80
21'-0" 24'-9" 27'-7"
18'-2" 21'-5" 25'-1"
16'-7" 19'-6" 23'-3"
14'-10" 17'-5" 20'-9"
21'-0" 24'-8" 29'-4"
18'-2" 21'-4" 25'-5"
16'-6" 19'-5" 22'-9"
14'-9" 16'-5" 18'-2"
14”
PRI-60 PRI-80
27'-5" 31'-3"
23'-9" 28'-3"
21'-8" 25'-9"
19'-4" 21'-2"
27'-4" 32'-7"
23'-8" 28'-2"
20'-7" 24'-11"
16'-5" 19'-11"
16”
PRI-60 PRI-80
29'-9" 34'-8"
25'-9" 30'-7"
23'-6" 26'-6"
19'-10" 21'-2"
29'-8" 35'-4"
24'-9" 30'-0"
20'-7" 24'-11"
16'-5" 19'-11"
2
reco B P
APA Quality Assurance All Perma-Straight I’s are produced in accordance with theAmerican Ply-wood Association (APA) and Engineered Wood Association (EWS) Performance Rated I-joist Standard that was introduced in 1997. The APA/EWS standard provides a span rating system for I-joists used in residential construction. All APA Performance Rated Ijoists, or PRIs have common load/span PRI-40
PRI-60
1650f
2100f
tables (see chart below), uniform rules and guidelines for installation, and consistent engineering design values. Span ratings are stamped right on the product; making it easy to install properly, and for code officials to inspect. The stamp tells how far the joist will span at a given spacing for uniform load applications.
PRI-80
2.5" flange
2.5" flange 9-1/2"
3.5" flange
2100f 9-1/2"
11-7/8"
11-7/8"
14"
16"
11-7/8"
14"
16"
Allowable Spans for APA/EWS Performance Rated I-joists
??
L/480 Live Load • Glue/Nailed Floors • Allowable Spans 40 psf LL + 10 psf DL SIMPLE SPAN
MULTIPLE SPAN
Depth
Designation
12" oc
16" oc
19.2" oc
24" oc
12" oc
16" oc
19.2" oc
24" oc
9-1/2”
PRI-40 PRI-60
18'-0" 18'-11"
16'-5" 17'-4"
15'-6" 16'-4"
14'-6" 15'-3"
19’-7" 20’-8"
17’-11" 18’-10"
16’-5" 17’-9"
14’-8" 16’-6"
11-7/8”
PRI-40 PRI-60 PRI-80
21'-5" 22'-7" 24'-11"
19'-7" 20'-8" 22'-8"
18'-6" 19'-6" 21'-4"
16'-9" 18'-2" 19'-10"
23’-5" 24’-8" 27’-1"
20’-6" 22’-6" 24’-8"
18’-9" 21’-2" 23’-3"
16’-9" 19’-7" 21’-7"
14”
PRI-60 PRI-80
25'-9" 28'-3"
23'-6" 25'-9"
22'-2" 24'-3"
20'-8" 22'-7"
28’-0" 30’-10"
25’-7" 28’-0"
24’-1" 26’-5"
19’-9" 23’-11"
PRI-60 PRI-80
28'-6" 31'-4"
26'-0" 28'-6"
24'-7" 26'-10"
22'-10" 25'-0"
31’-1" 34’-2"
28’-4" 31’-1"
24’-9" 29’-3"
19’-9" 23’-11"
is L /4 8 0 e d f o r d n e m om r r F loo B e t t e m a n c e 16” P e r for
??
L/480 Live Load • Glue/Nailed Floors • Allowable Spans 40 psf LL + 20 psf DL SIMPLE SPAN
MULTIPLE SPAN
Depth
Designation
12" oc
16" oc
19.2" oc
24" oc
12" oc
16" oc
19.2" oc
24" oc
9-1/2”
PRI-40 PRI-60
18'-0" 19'-0"
15'-9" 17'-4"
14'-4" 16'-4"
12'-10" 15'-1"
18’-1" 20’-8"
15’-8" 18’-5"
14’-3" 16’-9"
12’-9" 14’-2"
11-7/8”
PRI-40 PRI-60 PRI-80
21'-0" 22'-8" 24'-11"
18'-2" 20'-8" 22'-8"
16'-7" 19'-6" 21'-4"
14'-10" 17'-5" 19'-11"
21’-0" 24’-8" 27’-1"
18’-2" 21’-4" 24’-8"
16’-6" 19’-5" 22’-9"
14’-9" 16’-5" 18’-2"
14”
PRI-60 PRI-80
25'-9" 28'-3"
23'-6" 25'-9"
21'-8" 24'-3"
19'-4" 21'-2"
27’-4" 30’-10"
23’-8" 28’-0"
20’-7" 24’-11"
16’-6" 19’-11"
16”
PRI-60 PRI-80
28'-7" 31'-4"
25'-9" 28'-6"
23'-6" 26'-6"
19'-10" 21'-2"
29’-8" 34’-2"
24’-9" 30’-0"
20’-7" 24’-11"
16’-5" 19’-11"
Notes
• Minimum bearing length: 1-3/4" for end bearings • Bearing stiffeners not required when I-joists are used with spans & spacings given in this table, except as required for hangers. • Spans noted in above chart are based on uniform loads.
Notes
• Min. bearing length: 1-3/4"- End bearings, 3-1/2"- Intermediate bearings • Bearing stiffeners not required when I-joists are used with spans & spacings given in this table, except as required for hangers. • Spans noted in above chart are based on uniform loads.
3
Consistent Quality • Superior Performance
I - J OISTS
All Perma-Straight I products are warranted to be free of manufacturing defects, and to meet or exceed the design specifications noted for that product.
The APA trademark ensures superior I-joist quality and consistent performance. Each Perma-Straight I product will conform to the standards set by APA’s quality assurance program.
Product Warranty Perma-Straight I’s are warranted to be free from manufacturers’ defects or errors in workmanship and material in accordance with our specifications. Furthermore, when correctly installed Perma-Straight I’s will meet or exceed their design specifications for the normal life of the structure.
for Residential Floor Systems
Perma-Straight I Manufacturing Facility
Perma-Straight I 6855 Chestnut Ridge Road Beach City, OH 44608
888.756.6779 • Fax 330.756.2255 Distributed by