4. APA Performance Rated Rim
Boards used in applications where a high lateral load transfer capacity is required - When
the applied lateral loads exceed the pub lished horizontal load capacities of APA rim
boards, add a commercially available specialty connector made by connector manufacturers
between the rim board and framing or sole plate. This type of connector is installed using
face nailing into the rim board and has a typical lateral load capacity of 400 to 500 lbf
per connector.
5. APA Performance Rated Rim Boards subjected
to a combination of uniform and concentrated vertical loads - First, the applied
concentrated load shall not exceed the concentrated load capacity (P) of the rim board.
Second, the applied concentrated load shall be calculated as an equivalent uniform load
based on the applied loading length increased by a 45° load distribution through decking
and plate, as applicable. The equivalent uniform load shall be added to the applied
uniform load to determine the total applied uniform load, which shall not exceed the
bearing load capacity (V) of the rim board. If the total applied uniform load exceeds the
bearing load capacity (V), use appropriate squash blocks, double rim boards, or a higher
grade of APA Performance Rated Rim Board to carry the concentrated vertical load.
Example: A mechanical device
distributes a weight of 3,000 lbf for a distance of 16 inches along the top of a
1-1/8-inch x 18-inch APA Rim Board through 23/32-inch sheathing. The design uniform
vertical load on the rim board is 3,200 lbf/ft.
Check:
a) Concentrated vertical load = 3,000
lbf < 3,500 lbf. OK.
b) Equivalent uniform load = 3,000 / [16+2 x
23/32) / 12] = 2,065 lbf/ft. Total uniform load = 2,065 + 3,200 = 5,265
lbf/ft > 4,400 lbf/ft. NG. Use APA Performance Rated Rim Board Plus that has an
allowable bearing (vertical) load capacity of 5,700 Ibf/ft, or use double rim boards under
the concentrated load area.
We have field
representatives in most major U.S. cities and in Canada who can help answer questions
involving APA trademarked products. For additional assistance in specifying APA panel
products, get in touch with your nearest APA regional office. Call or write:
WESTERN REGION
7011 So. 19th St.
Tacoma, Washington 98411-0700
(253) 565-6600
|
EASTERN REGION
2130 Barrett Park Drive, Suite 102
Kennesaw, Georgia 30144-3681
(770) 427-9371
|
U.S. HEADQUARTERS AND INTERNATIONAL
MARKETING DIVISION
7011 So. 19th St.
Tacoma, Washington 98411-0700
(253) 565-6600
Internet Address: http//www.apawood.org
PRODUCT SUPPORT HELP DESK
(253) 620-7400
E-mail Address: help@apawood.org
(Offices: Antwerp, Belgium; London,United
Kingdom; Hamburg, Germany;Mexico City, Mexico; Tokyo, Japan.) For Caribbean/Latin America,
contact headquarters in Tacoma.
The product use recommendations in this publication are
based on APA - The Engineered Wood Association's continuing programs of laboratory testing
product research, and comprehensive field experience. However, because the Association has
no control over quality of workmanship or the conditions under which engineered wood
products are used, it cannot accept responsibility for product performance or designs as
actually constructed. Because engineered wood product performance requirements vary
geographically consult your local architect, engineer or design professional to assure
compliance with code, construction, and performance requirements.
Form No. W345B
Revised October 1998/0050 |
APA
The Engineered Wood Association |
