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National Evaluation Service, Inc, |
| BOCA Evaluation Services, Inc. |
ICBO Evaluation Service, Inc. |
SBCCI Public Safety Testing and
Evaluation Services, Inc. |
| 4051 West Flossmoor Road Country
Club Hills, Illinois 60478-5795 (708) 799-2305 |
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| NATIONAL
EVALUATION REPORT Copyright® 1998, National
Evaluation Services, Inc. |
Report No. NER-475 Reissued November 1,1998 |
STRUCJOIST® RESIDENTIAL JOISTS SJ-15, SJ-25, SJ-35 AND SJ-55
WILLAMETTE INDUSTRIES, INC.
2550 PROGRESS WAY
WOODBURN, OREGON 97071
ADDITIONAL LISTEE:
GEORGIA-PACIFIC CORPORATION
4330 WILDWOOD PARKWAY
2ND FLOOR
ATLANTA, GEORGIA 30339
1.0 SUBJECT
StrucJoist® Residential Joists SJ-15, SJ-25, SJ-35 and SJ-55.
2.0 PROPERTIES FOR WHICH EVALUATION IS SOUGHT
2.1 Structural Performance
2.2 Fire-resistive-rated Assemblies
3.0 DESCRIPTION
3.1 GENERAL
Willamette Industries, Inc., StrucJoist® Residential Joists
are wood I-joists with wood flanges and a single web. GPI Joists, manufactured by
Willamette Industries, are distributed by Georgia-Pacific Corporation and are manufactured
to the same specifications and have the same design properties as StrucJoist® joists. The name
GPI Joists is interchangeable with StrucJoist® throughout this report. StrucJoist® Residential Joists are
manufactured in constant depths ranging from 9-1/4 to 16 inches. (235-406 mm) as indicated
in Tables 2, 3 and 4 of this report. SJ-15, SJ-25. SJ-35 and SJ-55 Series Joists are
manufactured with one of eight (8) different flange grades (AA, A, B, C, E, F, G and H).
Each flange grade has different strength characteristics as indicated in Table 1 of this
report. Flange grades are differentiated on each joist by the last letter of the joist
designation. For example, a StrucJoist® Residential Joist labeled as SJ-15A would be an SJ-15 Series Joist
with Grade A flange material.
3.2 MATERIALS
Flange material for StrucJoist© Residential Joists consists of
eight (8) different grades of StrucLam laminated veneer lumber (LVL) composed of Douglas
fir larch. Southern yellow pine or Western hemlock species. Flange sections are machine
formed with a continuous tapered groove centered along the face, which accepts the web
material.
Web material for StrucJoist® Residential Joists is oriented
strand board complying with PS-2-92, Exposure 1. Structural I and StrucJoist® quality control
requirements. The web of the SJ-55 Series Joists is 7/16 inches thick (11 mm). All other
StrucJoist® Residential Joists have a web thick- ness of 3/8 inch (10 mm). The top and
bottom of the web are tapered for insertion into the flanges. The ends of the web panel
are also machine formed to allow for web-to-web V-joints.
Web-to-flange joints, and web-to-web joints, are
manufactured with an exterior type adhesive complying with ASTM D2559, which is mixed and
handled in accordance with the manufacturer's instructions.
| This report is limited to the specific product and data
and test reports submitted by the applicant in its application requesting this report. No
independent tests were performed by the National Evaluation Service. Inc. (NES). and NES
specifically does not make any warranty, either expressed or implied, as to any finding or
other matter in this report or as to any product covered by this report. This disclaimer
includes, but is not limited to, merchantability. This report is also subject to the
limitation listed herein. |
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