APA
The Engineered Wood Association
| DO THE RIGHT THING
RIGHT™ |
Wood is good. It is the earth's
natural, energy efficient and renewable building material.
Engineered wood is a better use of wood.
It uses less wood to make more wood products.
That's why using APA trademarked plywood, oriented strand
board and APA EWS glued laminated timbers is the right thing to do.
A few facts about wood.
- We're not running out of trees.
One-third of the United States land base - 731 million acres - is covered by forests.
About two-thirds of that 731 million acres is suitable for repeated planting and
harvesting of timber. But only about half of the land suitable for growing timber is open
to logging. Most of that harvestable acreage also is open to other uses, such as camping,
hiking, hunting, etc.
- We're growing more wood every
day. American landowners plant more than two billion trees
every year. In addition, millions of trees seed naturally. The forest
products industry, which comprises about 15 percent of forest land ownership,
is responsible for 41 percent of replanted forest acreage. That works
out to more than one billion trees a year, or about three million trees
planted every day. This high rate of replanting accounts for the fact
that each year, 27 percent more timber is grown than is harvested.
- Manufacturing wood is energy efficient.
Wood products made up 47 percent of all industrial raw material manufactured in the United
States, yet consumed only 4 percent of the energy needed to manufacture all industrial raw
materials, according to a 1987 study.
- Good news for a healthy planet.
For every ton of wood grown, a young forest products 1.07 tons of oxygen
and absorbs 1.47 tons of carbon dioxide. Wood. It's the right product
for the environment.
| Material |
Percent of Production |
Percent of Energy Use |
| Wood |
47 |
4 |
| Steel |
23 |
48 |
| Aluminum |
2 |
8 |
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NOTICE: The recommendations in this guide apply only to panels that bear the
APA trademark,. Only panels bearing the APA trademark are subject to the Association's
quality auditing program. |
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APA engineered wood products are used in a wide range of construction
applications. Time-tested panel products are used in traditional wood-frame construction
and in combination with other engineered wood products and systems. For low in-place cost,
versatility, and superior performance, APA engineered wood systems are simply hard to
beat. This guide from APA- The Engineered Wood
Association is designed as a handy reference manual for engineered wood specifiers and
users in both residential and commercial construction. It contains up-to-date information
on APA Performance Rated Panels, glulam, I-joists, specification practices, floor, wall
and roof systems, diaphragms and shear walls,fire-rated systems and methods of finishing.
It also includes recommendations of Code Plus, an APA program that promotes extra quality
construction in floors, walls, and roofs.
If what you want to know about engineered wood construction
systems isn't fully explained here, chances are it is in one of our many other
publications. Simply write for the appropriate title or titles cited throughout this
publication Or for individual assistance with specific design questions or problems,
contact the nearest APA regional field office listed on the back cover. |
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