BUILDING MATERIAL QUESTION - Weight of OSB?
Category: Family and Home > Home
Asked by: hanni05-ga
List Price: $5.00
03 Jan 2005 19:38 PST
Expires: 02 Feb 2005 19:38 PST
Question ID: 451409
What is the weight (in pounds) of a 1/2" x 4' x 8' and a 3/4" x 4' x 8' sheet of OSB (oriented strand board)?
Re: BUILDING MATERIAL QUESTION - Weight of OSB?
Answered By: efn-ga on 04 Jan 2005 00:13 PST
Hi hanni05, A 1/2" sheet of oriented strand board weighs about 52-53 pounds and a 3/4" sheet weighs about 78-80 pounds. It appears that it is not possible to be more precise because the density of the material is not standardized and can vary depending on the moisture content. Sources The Canadian Wood Council has a web page with tables of thicknesses and weights. http://www.cwc.ca/products/osb/sizes.php There are two tables with slightly different results for two different grades of OSB. For a 1/2" sheet, the weight is 53 pounds for OSB-1 and 52 pounds for OSB-2. For a 3/4" sheet, the weight is 80 pounds for OSB-1 and 78 pounds for OSB-2. A note explains "Panel weight calculated on the basis of 640 kg/m^3 (40 lbs/cu.ft.) density and nominal thickness." A web page from Goldboard Development Corporation has slightly lower density values of 625 and 39, respectively. http://www.goldboard.com/products/equivalency.htm Additional Links An article by Paul Fisette on the website of the Building Materials and Wood Technology program at the University of Massachusetts, Amherst says (implicitly) that a 3/4" sheet weighs 80 pounds. http://www.umass.edu/bmatwt/publications/articles/osb_vs_plywood.html This page from the High School Tech Production website lists the weight of a 3/4" sheet as 85 pounds. http://www.hstech.org/howto/material/plywood.htm Search Strategy I used various combinations of search terms to find these pages, including: osb sheet pounds osb oriented strand board osb OR "oriented strand board" sheet +weight osb OR "oriented strand board" kg osb OR "oriented strand board" lb OR lbs osb density I hope this information is helpful. Regards, --efn
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