TECHNICAL
BULLETIN
TB-157
January 2016 (Expires 1/2018)
Weyerhaeuser EDGETM and
EDGE GOLDTM Floor Panels
Design and Installation Information
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Table of Contents
Weyerhaeuser Edge GoldTM Premium Floor Panel
3
Floor Design
3
Structural Design Data
7
Technical Data
10
Weyerhaeuser Edge GoldTM Response to Moisture
11
Finished Flooring
12
Environmental Sustainability
13
Warranty Information
14
Field Installation Features
16
Specification Examples
17
Down PoreTM is available in select markets, contact your Weyerhaeuser representative for availability.
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January 2016 (Expires 1/2018)
Weyerhaeuser Edge Gold™ Premium Floor Panel
Engineered specifically for floor applications, Weyerhaeuser Edge Gold™ is a “next generation” premium grade oriented strand
board (OSB) panel. Compared to commodity OSB commonly used in sheathing applications, Edge Gold™ is manufactured with
an enhanced formulation involving higher adhesive and wax content. As a result, Edge Gold™ premium panels deliver
outstanding dimensional stability through “wet weather” construction periods, making it an ideal specification for flooring.
Weyerhaeuser is an industry leader in panel technology and has successfully developed proprietary grades of OSB for TJI Joists®
as web-stock and Edge Gold™ as floor panels. Floor panels and vertical webs of TJI Joists® are often faced with the same
challenges. Both need to be dimensionally stable throughout the construction period, and ultimately deliver structural
performance. The enhanced formulation of Edge Gold™ provides the solution for dimensionally stable structural floor panels.
Floor Design
Designing as a System with Vibration Control
Maximum joist span is often governed by code mandated floor vibration criteria. One way to efficiently mitigate floor vibration is
through the specification of thicker Edge Gold™ floor panels (versus using heavier, deeper floor joists). Through the use of
thicker floor panels to control floor vibration, floor joists can often span greater distances, while still meeting code requirements.
The Joist Span Comparison chart illustrates the effect that floor panel thickness has on allowable TJI Joists® spans.
JOIST SPAN COMPARISON
TJI Joists®
Floor Panel Thickness
(11 7/8” TJI® 230 @ 19.2" o.c. 40LL / 10DL)
TM
7/8" Edge Gold
TM
23/32" Edge Gold
TM
5/8" D.Fir plywood
16
16.5
17
17.5
18
Clear Span (ft)
Note: simple span, no ceiling, no blocking, no concrete topping
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FLOOR ASSEMBLY COST COMPARISON (1) (2)
5/8 D.fir Plywood
System
Span
Cost
Joist Design
(per
1000 ft2)
14'
15'
16'
9½" TJI® 210 @ 19.2"
TJ-Pro™
Rating: 37
9½" TJI® 230 @ 19.2"
TJ-Pro™ Rating: 33
9½" TJI® 210 @ 12"
TJ-Pro™ Rating: 40
$1,740
$1,830
$2,350
23/32 Edge Gold™
System
Cost
Joist Design
(per
1000 ft2)
9½" TJI® 210 @ 19.2"
TJ-Pro™
Rating: 39
9½" TJI® 210 @ 19.2"
TJ-Pro™ Rating: 34
9½" TJI® 210 @ 16"
TJ-Pro™ Rating: 36
$1,590
$1,590
$1,800
7/8 Edge Gold™
System
Cost
Joist Design
(per
1000 ft2)
9½" TJI® 210 @ 24"
TJ-Pro™ Rating: 41
9½" TJI® 210 @ 24"
TJ-Pro™ Rating: 37
9½" TJI® 210 @ 19.2"
TJ-Pro™ Rating: 39
$1,640
$1,640
$1,840
11⅞" TJI® 210 @ 19.2"
TJ-Pro™ Rating: 40
$1,850
11⅞" TJI® 210 @ 19.2"
TJ-Pro™ Rating: 42
$1,700
11⅞" TJI® 210 @ 24"
TJ-Pro Rating: 44
$1,720
17'
11⅞" TJI® 230 @ 16"
TJ-Pro™ Rating: 42
$2,180
11⅞" TJI® 230 @ 19.2"
TJ-Pro™ Rating: 40
$1,790
11⅞" TJI® 230 @ 24"
TJ-Pro™ Rating: 42
$1,790
18'
11⅞" TJI® 230 @ 12"
TJ-Pro™ Rating: 45
$2,660
11⅞" TJI® 230 @ 16"
TJ-Pro™ Rating: 42
$2,030
11⅞" TJI® 230 @ 19.2"
TJ-Pro™ Rating: 45
$2,030
(1) Systems with wider joist spacing typically require less construction time and cost less with fewer framing members to install and fewer obstructions for
mechanical trades. These savings have not been reflected in the table above.
(2) Pricing shown is for comparative purposes only, and is based on historical pricing trends for panel products. Contact your local Weyerhaeuser
representative for final pricing.
As illustrated in the Floor Assembly Cost Comparison table, in many cases thicker Edge Gold™ can reduce the cost of the floor
system by allowing the selection of floor joists in a lighter series, shallower depths, and/or wider on-centre spacing. Note:
Historically, the market price of 23/32" Weyerhaeuser Edge Gold TM is at an advantage relative to 5/8" plywood.
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Trus Joist® TJ-Pro Rating System
The Trus Joist® TJ-Pro™ Rating System is a proprietary rating system that predicts floor performance and assigns a rating based
on client satisfaction. The methodology is based on extensive full-scale laboratory testing and more than one million
installations. By using the TJ-Pro™ Rating System, you can specify a floor system that will meet the performance desired by your
clients, and not just the code minimum.
Driven by your specification, designers using proprietary Weyerhaeuser design software such as Javelin® or Forte® can design a
floor system that will deliver the TJ-Pro™ rating level you have selected. Because the software considers the many factors
affecting floor performance, even taking into account the perceptions of the homeowner, the TJ-Pro™ Rating System provides a
much better predictor of floor performance. The TJ-Pro™ rating values relative to customer satisfaction are provided in the TJPro™ Rating Description table.
TJ-PRO™ RATING DESCRIPTION
TJ-Pro™ Rating
Occupants who rate the floor "Good" to "Excellent"
25
28%
35
63%
45
84%
55
96%
65
99%
Factors that affect floor performance include:
•
•
•
•
•
•
TJI Joist® series, depth, and spacing
Deck thickness and quality
Directly applied ceilings
Location of floor partitions
Blocking
Bearing conditions for the TJI Joists®
Specification example of applying a minimum TJ-Pro™ Rating is
provided on page 16.
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Floor Panel Deflection and Curvature
When designing a floor system, close attention is typically made to verify that the deflection of the floor joists satisfies code
requirements. However, when considering the specification for the finished flooring materials, consideration should also be
given to the deflection of the sub-floor panel between joists. For example, Terrazzo, Tile & Marble Association of Canada
(TTMAC) specifies a maximum deflection between panels of L/360 to control tile damage during service.
Specification of thicker Edge Gold™ floor panel will result in less panel deflection and therefore a larger radius of curvature of
the floor panel between joists, even when floor joists are designed at greater on-centre spacing. The result of specifying thicker
Edge Gold™ is a “flatter” floor system, which results in less flex of the finished flooring material as well as a more economical
floor system with fewer TJI® Joists.
The following diagram illustrates this effect on two floor systems, both featuring TJI® Joists. The floor system on the left uses ⅞"
Edge Gold™ floor panels with TJI® joists spaced at 24" on-centre while the floor system on the right uses ⅝" Douglas fir plywood
sub-floor with TJI® Joists at 16" on-centre. The ⅝" Douglas fir plywood sub-floor illustrated on the right results in a much shorter
radius of curvature and therefore a less flat floor.
Long Radius of Curvature
Short Radius of Curvature
The floor panel system with a short radius of curvature results in a much “sharper” curve, therefore, a floor finish will be
required to flex more than a system with a large radius of curvature.
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Structural Design Data
Design Properties
WEYERHAEUSER EDGE™ AND EDGE GOLD™ SPECIFIED STRENGTH AND STIFFNESS
Span Rating
1F20
1F24
Nominal Thickness
19/32" & 5/8"
Bending
Shear
Axial
(1)
1F32
1F48
7/8"
1 1/8"
0°
90°
0°
90°
0°
90°
0°
90°
970
405
1 295
620
1 725
1 080
3 235
1 940
212 400
38 200
297 400
76 500
647 900
223 000
1 168 300
467 300
420
265
535
310
630
440
960
685
62 810
62 810
68 520
68 520
85 650
85 650
114 200
114 200
310
310
335
335
365
365
485
485
4 590
3 290
5 275
4 045
6 305
5 140
8 910
7 535
6 305
5 960
7 535
6 440
9 595
8 910
12 335
10 280
3.65
2.1
4.4
2.55
5.2
3
6.7
3.5
Strength Axis(1)
Bending, mp (lb-in/ft of
width)
Stiffness, EI (lb-in2/ft of
width)
Planar Bending - Shear,
vpb (lb/ft)
Shear - Through Thickness rigidity, Bv
(lb/in)
Shear Through Thickness,
vp (lb/in of shear-resisting
panel length)
Axial tension, tp (lb/ft of
width)
Axial Compression, pp
(lb/ft of width)
Axial Stiffness, EA (lb/ft
of width x 106)
23/32"
Orientation of applied force relative to the panel’s major axis
General Notes:
•
Table is based on CSA O86-014.
•
Lateral and withdrawal capacity of nails can be
computed in accordance with CSA 086-14. For
diaphragm design, use species adjustments based on
the framing member.
•
Additional information on KD for permanent loads and
permanent deflection can be found in section 5.3.2
and 5.4 respectively of CSA O86-014.
Axial Compression
Axial Tension
•
Weyerhaeuser Edge™ and Edge Gold™ are intended
for dry use applications.
For moisture related
information, refer to the section on Weyerhaeuser’s
Edge Gold® Premium Response to Moisture.
Shear-in-the-Plane
Shear-through-the-Thickness
(Rolling or Interlaminar Shear)
Bending
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Load Tables
WEYERHAEUSER EDGE™ AND EDGE GOLD™ FACTORED UNIFORM LOAD TABLE (PSF)
Load
Span
Span
Major Axis Perpendicular to Supports (0°)
Thickness Calculation
Rating
Based
12
16
19.2
24
30
32
36
40
on(1)(2)
ULS
760
432
300
192
123
108
19/32"
1F20
SLS - L/180
1848
695
380
184
90
74
& 5/8"
SLS - L/360
924
348
190
92
45
37
ULS
968
577
400
256
164
144
91
74
1F24
23/32"
SLS - L/180
2588
973
533
258
126
103
91
65
SLS - L/360
1294
487
266
129
63
52
45
33
ULS
1140
768
533
341
219
192
121
98
1F32
7/8"
SLS - L/180
5637 2121 1160
562
275
225
197
142
SLS - L/360
2819 1060 580
281
138
112
99
71
ULS
1737 1258 1000
640
410
360
228
184
1F48
1 1/8"
SLS - L/180 10165 3824 2092 1014
497
405
356
256
SLS - L/360
5083 1912 1046
507
248
202
178
128
(1)
(2)
•
60
51
42
21
68
93
46
128
167
83
44
45
23
82
81
41
ULS = Ultimate Limit States, SLS=Serviceability Limit States
Strength calculation based on minimum of bending or shear
General Notes:
•
48
Table is based on:
− Uniform loads.
− 2x supports for span configurations less than
48" on-center. Support width effects have
been considered.
− 4x supports for span configurations equal to
or greater than 48" on-center. Support width
effects have been considered.
For Major Axis Perpendicular to Supports:
− 3-span conditions assumed for spans of 32"
or less.
− 2-span conditions assumed for spans greater
than 32".
− 1-span condition requires the use of the span
adjustment factor (see “Span Adjustments”).
SPAN ADJUSTMENTS:
Item
Deflection
Moment
2-Span to 1-Span
0.42
1.00
3-Span to 1-Span
0.53
0.80
Shear
1.25
1.20
•
When adjusting uniform loads based on strength from the
Weyerhaeuser Edge™ and Edge Gold™ Factored Uniform Load
Table, use the span adjustment factors for moment.
•
When adjusting uniform loads calculated from the equations
in Calculation of Uniform Loads, use the corresponding factor.
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Calculations of Uniform Loads
The equations below are based on one-way “beam” action. They are provided to help develop allowable uniform loads based on
moment, shear, and deflection as applied to one-, two-, and three-span conditions. Loads derived from the equations provided
are assumed to be applied over full-size panels in normal sheathing applications. The following definitions apply:
D
EI
Mr
Vrp
L
Lm
Lv
LD
R
Deflection (in)
Bending stiffness (lb-in2/ft)
Factored moment capacity (lb-in/ft)
Factored planar bending-shear capacity (lb/ft)
Span (in)
Center-to-center span between supports, used for
moment calculation (in)
Clear span, used for shear calculation (in)
Clear span plus SW, used for deflection
calculation (in)
Denominator of chosen deflection limit. (Example:
deflection limit=L/360 then R =360)
One-Span Equation
SW
W
Wm
Wv
WD
Support width factor
-0.25 for 2x nominal lumber
-0.625 for 4x nominal lumber
Uniform load (psf)
Factored uniform load based on moment
capacity (psf)
Factored uniform load based on shear capacity
(psf)
Factored uniform load based on deflection (psf)
Moment Capacity =
Shear Capacity =
Wm =
Wv =
96M r
Lm
24Vrp
2
Lv
L 921.6 EI
Deflection = W∆ = m
4
L∆ R
Two-Span Equation
Moment Capacity =
Shear Capacity =
Three-Span Equation
Wm =
Wv =
96 M r
2
Lm
19.2Vrp
Lv
L 2220 EI
Deflection = W∆ = m
4
L∆ R
120M r
Moment Capacity = Wm =
2
Lm
20Vrp
Shear Capacity = Wv =
Lv
L 1743EI
Deflection = W∆ = m 4
L∆ R
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Technical Data
January 2016 (Expires 1/2018)
Available Products
Weyerhaeuser Edge™ and Edge Gold™ meet requirements in CSA O325, which is recognized by the National Building Code of
Canada and accepted by the Canada Mortgage and Housing Corporation. Panels are available in the following thicknesses:
19/32", 23/32", 7/8", 1 1/8"
Weyerhaeuser Edge™
5/8", 23/32", 7/8", 1 1/8"
Weyerhaeuser Edge Gold™
Some sizes may not be available in your region.
Fire and Sound Performance
The 2005 National Building Code lists OSB and plywood floor panels together in the fire and sound assemblies contained in
Table A-9.10.3.1.B.
Weyerhaeuser Edge Gold™ conforms to CAN/CSA-0325.0 and is an approved subfloor material in the sound and fire assemblies
for Weyerhaeuser products listed by Intertek Testing Services. Intertek provides fire and sound listings that are based on and
supported by proprietary test reports.
For more information on the fire performance of Weyerhaeuser Edge Gold™ and Weyerhaeuser products, refer to the “Fire
Rated Assemblies and Sprinkler Systems” at http://www.woodbywy.com/literature/1500.pdf.
Other References:
www.intertek-etlsemko.com. Intertek Testing Services
www.cwc.ca . . . . . . . . . . . . . Canadian Wood Council
www.iccsafe.org . . . . . . . . . International Code Council
www.nfpa.org . . . . . . . . . . . . . National Fire Protection Association
www.firesafehome.org . . . . . Residential Fire Safety Institute (RFSI)
Formaldehyde and Adhesive Data
No urea formaldehyde resins are used in the manufacture of any Weyerhaeuser products, including Edge Gold™ floor panels.
When tested in accordance with the ASTM E1333 large chamber test, formaldehyde emissions from Weyerhaeuser products
(including Edge Gold™) were under 0.10 ppm, which is below even the most stringent regulatory requirements. In many cases,
emissions were so low that they could not be distinguished from the background level of formaldehyde in the fresh air used
during the testing.
Other references:
Structural Board Association Technical Bulletin (TB102)
http://www.osbguide.com
“Questions and Answers about Adhesives and Formaldehyde Emissions” by Weyerhaeuser
http://www.woodbywy.com/literature/1505.pdf
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Weyerhaeuser Edge
GoldTM
January 2016 (Expires 1/2018)
Response to Moisture
Bond Durability
Weyerhaeuser Edge Gold™ carries the “Exposure 1” bond classification. All products that meet “Exposure 1” rating are
designed and suitable for applications where construction delays and therefore exposure to outside elements may be expected
prior to full enclosure protection. All “Exposure 1” rated products (including all plywood and OSB panels) should be properly
stored and protected prior to installation. Refer to manufacturer recommendations for further details on proper storage and
handling.
Strength Properties
APA “Technical Topics” document TT-052 testing has shown that the overall strength properties of OSB will not be affected by
exposure conditions associated with typical construction delays. All Exposure 1 rated products (including all plywood and OSB
panels) when exposed to repeated wetting or high moisture environments may deteriorate or lose strength. For this reason,
protection from these conditions must be provided.
Moisture Absorption and Drying
Weyerhaeuser Edge™ and Edge Gold™ will both absorb and release moisture slower than common plywood. If Edge Gold™
panels become wet during construction, the drying rate difference between Edge Gold™ and plywood is not significant in a
typical residential or commercial project given the available time between “full enclosure” and placement of any finished
flooring. Moisture content recommendations of the floor panel made by the finished flooring manufacturer should always be
followed.
Nail Values and Moisture
The National Oak Flooring Manufacturers Association (NOFMA) commissioned testing at the Virginia Polytechnic Institute to
determine the best fastening system for nail-down hardwood floors on subfloors under realistic construction site conditions. In
the test results, it is cited,
“After 2-1/2 years of simulated moisture cycles, 5/8" and 3/4" plywood and 23/32" OSB subfloors were comparable in
nail holding power.”
Industry testing(*) has also been conducted on nail withdrawal properties of plywood and OSB to investigate the effect of
various moisture exposure conditions. These tests show that OSB and plywood panels taken through a wet-dry cycle
display similar nail withdrawal performance. In some cases the, nail withdrawal values actually increased for OSB.
(*) “Nail Withdrawal and Pull-Through Strength of Structural-Use Panels”, APA – B Herzog, Borjen Yeh
Moisture and Mold
Weyerhaeuser provides extensive information related to this topic at www.woodbywy.com. See our Frequently Asked
Questions About Mold (#1504) resource sheet at http://www.woodbywy.com/literature/1504.pdf.
Edge-Swell Performance
In addition to the superior dimensional stability characteristics that are a result of its enhanced composition, Weyerhaeuser
Edge Gold™ has added protection against edge swell throughout the construction phase with an edge seal treatment and is
backed by Weyerhaeuser’s limited 50-year structural warranty and 200-day no‑sand guarantee.
Note: Both the limited 50-year structural warranty and 200-day no‑sand guarantee apply to panels cut-to-fit during construction.
Other Information Related to Moisture on www.woodbywy.com:
− Product Transportation, Handling and Storage, #1507
− Understanding and Controlling Condensation, #G1102
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Finished Flooring
Hardwood Flooring
The National Wood Flooring Association (NWFA) has become the leading organization for wood flooring certification
and the predominant source for proper installation of wood flooring. The NWFA Installation Guidelines provide
information on proper acclimation, subfloor guidelines and specifications, and installation guidelines. The NWFA has
approved Weyerhaeuser Edge™ and Edge Gold™ floor panels in a minimum thickness of 23/32" for use under hardwood
floors in Truss/joist systems spaced under 19.2" o.c.
Although 23/32" OSB is span-rated for floor systems spaced at 24" on-center, NWFA believes a thicker subfloor is
necessary to reduce deflection of the subfloor and minimize pops and squeaks in the wood flooring. Therefore, the
NWFA recommendation is to use a ⅞" thick OSB panel for floor systems spaced at 24" on-center.
NWFA Installation Guidelines, Chapter 4 – Wood Subfloor Guidelines, Part IV – Panel Products Subflooring, Section E –
Acceptable Panel Subfloors provides minimum acceptable thicknesses of panel subflooring, depending on the spacing
of the floor joists. Quoting Item 3:
Edge Gold™ Code Conformance and Availability
Edge Gold™ floor panels are manufactured in accordance with US Voluntary Product Standard PS2 and CAN/CSA-O325 with an
Exposure 1 bond classification. ⅞" Edge Gold™ floor panels are available through Weyerhaeuser Wood Product Dealers and
Independent Distributors. Installers of hardwood flooring should always refer to the floor preparation and installation guidelines
provided by their associations and flooring manufacturer.
Ceramic Tile
Weyerhaeuser Edge™ and Edge Gold™ floor panels in a minimum thickness of 23/32" are suitable as the subfloor material in
floor assemblies with a ceramic tile finish whenever a double layer floor system (consisting of a subfloor with an underlayment
layer) is specified.
The figure below shows the components typically found in a wood floor ceramic tile application, according to the Tile Installation
Manual by TTMAC (The Tile Terrazzo and Marble Association of Canada).
For more information, see Ceramic Tile and Weyerhaeuser Edge™ and Edge Gold™ Floor Panels (OSB-4006) at
http://www.woodbywy.com/literature/osb-4006.pdf.
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Environmental Sustainability
For a complete copy of the sustainability report, visit
http://weyerhaeuser.com/files/7814/3389/2655/PEP_Timberstrand_and_OSB.pdf
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Warranty Information
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FIELD INSTALLATION FEATURES
Feature
Self Gapping T&G
Fastener Template
Packaged Face-Up
Structural Warranty
200-day No-Sand Guarantee
Edge™
Edge Gold™
✓
✓
✗
✗
25yr
✗
✓
✓
50yr
✓
Self-Gapping Tongue-and-Groove
Both the Weyerhaeuser Edge™ and Edge Gold™ floor panels are manufactured with a self gapping tongue-and-groove profile
that automatically gaps the edges as the floor is assembled (see figure below). A 10d box nail can be used to gauge the 1/8"
gap between the ends of the panels.
For buildings over 80' in length or width, additional gapping recommendations may be necessary. For additional guidelines,
see OSB-4004 Technical Resource Sheet at http://www.woodbywy.com/literature/osb-4004.pdf.
Fastener Template
Weyerhaeuser stamps the face of every Edge Gold™ panel with a precision fastening template. Panels are shipped in the
bundle “face-up”, ready for placement. Edge Gold™ panels ensure efficient and accurate installation on the construction site.
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Specification Examples
Architectural Specification Example
(Weyerhaeuser Edge Gold™ and TJ-Pro™ Rating Floor Performance)
Typical Floor Construction
Interior Floor Finish (Refer to Finish Schedule)
23/32" (19 mm) Weyerhaeuser Edge Gold™ T&G Floor Panels
(Glued and Nailed)
TJI® Floor Joist [Minimum TJ-Pro™ Rating of 45 points] (refer to Structural)
6" Fiberglass Batt Insulation
12.7mm Resilient Channels @ 600 mm
2 layers 5/8" (15.9 mm) Type X Gypsum Ceiling
Ceiling Finish (Refer to Finish Schedule)
Structural Specification Example
RATED SHEATHING
Wood structural panels shall conform to the requirements of CAN/CSA-0325.0. Sheathing shall be
as follows:
Floor Sheathing
23/32" 1F24 Span-Rated Weyerhaeuser Edge Gold™ T&G Floor Panels
PRE-MANUFACTURED WOOD JOISTS
Shall be manufactured by Weyerhaeuser Trus Joist®. Pre-manufactured wood joists shall be the size
and profile shown on the drawings. Joists shall be compatible with the load, dimensional and fire
rating requirements of the project.
Floor vibration performance:
Minimum TJ-Pro™ Rating: 45 points
,’Weyerhaeuser,’Forte,’Javelin,’Microllam,’Parallam,’Silent’Floor,’TimberStrand,’TJI,’TJ,’Trus’Joist,’Edge,’and’Edge’Gold’are’registered’trademarks’and’TJPro’is’a’trademark’of’Weyerhaeuser’NR.’©’2016’Weyerhaeuser’NR’Company.’All’rights’reserved.
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