APAwood – Europe

The leading resource for information about engineered wood products for the UK and Europe

About APA

Products & Trademarks

Official Guidelines

Green Topics

Applications

Contact us

Selecting OSB Panels, Technical Specs

Structural 1, APA-Rated OSB Sheathing and Sturd I -Floor – Technical Overview

APA’s technical specification overview compares the three main types of APA OSB panels  – Rated OSB Sheathing, Structural 1 and APA Rated Sturd I -Floor. It gives data for the most common performance categories, span ratings, and thickness tolerances.

See how this info appears on APA OSB trademarked panels.  When you see Structural I’ on an APA trademark for OSB sheathing and Sturd-I-Floor it denotes a performance-rated panel, with superior bending stiffness and strength. See more on its strength benefits.

PERF CAT APA RATED

SHEATHING

STRUCTURAL 1 APA RATED STURD I-FLOOR Specific Tolerances in PS2 and Recommended Thickness  denoted on APA Trademarked Panels
On standard/ trademarked panel  Span Rating  Span Rating  Span Rating Min Thickness (In)

Max Thickness

(In)

Recommended  thickness (in) 

 

3/8 Wall 16 oc/ Wall 24 oc/ 24/0 24/0 N/A 0.344 0.406 0.354
7/16  Wall 16 oc/ Wall 24 oc/ 24/16 24/16 N/A 0.406 0.469 0.418
15/32 32/16 32/16 N/A 0.438 0.500 0.451
1/2 32/16 32/16 N/A 0.469 0.531 0.483
19/32 40/20 40/20 16 oc/ 20 oc 0.563 0.624 0.578
5/8 40/20 40/20 16 oc/20 oc 0.594 0.656 0.609
23/32 48/24 48/24 24 oc 0.688 0.750 0.703
3/4 48/24 48/24 24 oc 0.719 0.781 0.734
7/8 60/32 N/A 24oc/ 32 oc 0.831 0.919 0.849
5/16 12/0, 16/0, 20/0 N/A N/A 0.281 0.344 0.289
1-1/8 N/A N/A 48 oc 1.069 1.181 1.091