D
RY
SE

U

USER

GUIDE
Technical Data
for PWT Treated LVL

2WARRANTY
TRANSFERABLE

TRANSFERABLE
TRANSFERABLE

T R A NS FER ABL E

PWT Treated LVL
Treated Laminated Veneer Lumber

Features and Benefits•	PWT Treated LVL is protected against damage caused by fungal rot, decay,
and wood-destroying insects, including Formosan termites (interior orexterior usage).

• Non-corrosive!
		 –	PWT Treated LVL and its chemical additive do not corrode or
damage hardware.
		 –	Choose appropriate coating on connectors for the project conditions.
•	Interior use•	Stainable and paintable•	No added VOCs
• Code Reports ESR-2909, ESR-3834, PR-L329, and FL 39762•	We use a proprietary and CODE APPROVED treatment system and process,utilizing TRU-CORE® technology.

Grade (no strength reduction after treatment)

The Product

2.0E, 2800 Fb

Product Highlights•	PWT Treated LVL is the only manufacturer-treated LVL, and it is covered bya 25-year limited, transferable warranty.

•	PWT Treated LVL may be used in exterior construction above-groundapplications (UC3B) and for components that are difficult to maintain,
repair, or replace and that are critical to the performance and safety of theentire system:
		 – Deck substructures, exterior columns, sill plates, and fascia•	Treatment is added during the LVL manufacturing process, which fully
penetrates throughout each veneer layer, offering complete protection fromthe inside out.
•	No treatment gradient — and double (2X) the preservative retention
required in various standards around the world•	Additionally, envelope treated for best surface properties

Beam Sizes
1¾" x
3½" x
*5¼" x

–
–
5½"

–
–
7¼"

9½"
9½"
9½"

11⅞"
11⅞"
11⅞"

14"
14"
14"

18"
–
–

11¼"

–

Joists (Dimension Sizes)
1½" x

3½"

5½"

7¼"

9¼"

Column Sizes
3½" x
3½"
–
–
*5¼" members are industrial grade only; the product must be kept wrapped prior
to installation, be flashed on-site, and should be clad when an architectural- or
appearance-grade finish is required.

Product Identification• Product has a muted olive tint

16"
16"
16"

• Stamp: “PWT TREATED”

pacificwoodtech.com|• Special PWT Treated LVL paper wrap

page 2

PWT Treated LVL

Reference Design Values
DRY USE
True (Shear-Free) Modulus of Elasticity, E = 2,000,000 psi(1)(4)
Bending (beam), Fb = 2,800 psi(2)(3)Horizontal Shear (beam), Fv = 285 psi
Compression perpendicular to grain [psi], Fc = 850 psi(1) Do not adjust for load duration.
(2) Adjust by (12/d)0.2, where d is the depth of the member [inches].
(3) Adjust by 1.04 for repetitive members as defined in the NDS.
(4) True (Shear-Free) modulus of elasticity does not account for shear deformation.
(5) See APA Product Report PR-L329, ICC-ES Evaluation Report ESR-2909, or Florida ProductApproval FL 39762.

■	Flashing tape required to meet PWT
installation and warranty guidelines.

Note: Not all exterior conditions are wet-use and not all interior conditions are dry use.
See What are wet use conditions on our website for more information on this subject.

See note 2.

PWT Treated LVL
joists, supported by
PWT Treated LVL
ledger or beams
and columns, withproper connectors
and fasteners.
PWT Treated LVL
ledger or beams
and columns
per local code
requirements,
with proper deckanchors/ties,
connectors, andfasteners.

s)

rie

2' m
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er

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kj

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sp

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Bea

m sp

ans

betw

een

supp

orts

(var

ies)

PWT Treated LVL columns
with 1" standoff or elevatedpost base to meet PWT
installation guidelines andwarranty requirement.

.
ax)'2 m ist er(4jo levti
can

PWT Treated
LVL Beam

Adjustable standoff
post baseNotes:
1. For diagonal bracing, see AWC Deck Construction Guide, visit pacificwoodtech.com/treated.
2. For flashing tape recommendations, visit pacificwoodtech.com/treated.
3. For fastener and hanger information, visit strongtie.com/deckcenter.
4. Design conditions outside of the scope of this guide may be designed using CSD Software.

pacificwoodtech.com

Elevated
post baseCantilever lengths in this guide are limited to 2 ft.
For longer cantilevers, please use sizing software.

|

page 3

PWT Treated LVL

Joist Spans
Improved Performance
DRY USE — 40 PSF LIVE LOAD AND 10 PSF DEAD LOAD — L/480
Product

PWT Treated LVL

Pressure Treated
No. 2 Southern pine
Pressure Treated
No. 2 Hem-fir (incised)NominalSize[in]Actual
Size
[in]

2x6
2x8
2 x 102 x 122x8
2 x 102 x 122x8
2 x 102 x 12

1½ x 5½
1½ x 7¼
1½ x 9¼
1½ x 11¼
1½ x 7¼
1½ x 9¼
1½ x 11¼
1½ x 7¼
1½ x 9¼
1½ x 11¼

DRY USE — 60 PSF LIVE LOAD AND 10 PSF DEAD LOAD — L/480

With or Without 2' Cantilever
Joist Spacing (o.c.)
12"
16"
24"
10'- 4"9'- 4"
8'- 1"
13'- 7"12'- 4"10'- 9"17'- 5"15'- 9"13'- 7"21'- 2"19'- 2"16'- 8"11'- 2"10'- 3"9'- 2"
13'- 10"12'- 10"11'- 3"16'- 8"15'- 4"13'- 4"10'- 9"9'- 10"8'- 10"13'- 4"12'- 2"10'- 9"16'- 0"14'- 7"12'- 10"

Product

PWT Treated LVL

Pressure Treated
No. 2 Southern pine
Pressure Treated
No. 2 Hem-fir (incised)NominalSize[in]Actual
Size
[in]

2x6
2x8
2 x 102 x 122x8
2 x 102 x 122x8
2 x 102 x 12

1½ x 5½
1½ x 7¼
1½ x 9¼
1½ x 11¼
1½ x 7¼
1½ x 9¼
1½ x 11¼
1½ x 7¼
1½ x 9¼
1½ x 11¼

With or Without 2' Cantilever
Joist Spacing (o.c.)
12"
16"
24"
9'- 0"
8'- 1"
7'- 0"
11'- 10"10'- 9"9'- 3"
15'- 1"13'- 7"11'- 10"18'- 5"16'- 8"14'- 6"9'- 10"9'- 2"
8'- 3"
12'- 3"11'- 4"10'- 0"14'- 8"13'- 6"11'- 7"
9'- 7"
8'- 10"8'- 0"
11'- 9"10'- 9"9'- 8"
14'- 1"12'- 10"10'- 4"

Code Minimums
DRY USE — 40 PSF LIVE LOAD AND 10 PSF DEAD LOAD — L/360
Product

PWT Treated LVL

Pressure Treated
No. 2 Southern pine
Pressure Treated
No. 2 Hem-fir (incised)NominalSize[in]Actual
Size
[in]

2x6
2x8
2 x 102 x 122x8
2 x 102 x 122x8
2 x 102 x 12

1½ x 5½
1½ x 7¼
1½ x 9¼
1½ x 11¼
1½ x 7¼
1½ x 9¼
1½ x 11¼
1½ x 7¼
1½ x 9¼
1½ x 11¼

DRY USE — 60 PSF LIVE LOAD AND 10 PSF DEAD LOAD — L/360

With or Without 2' Cantilever
Joist Spacing (o.c.)
12"
16"
24"
11'- 1''10'- 1''8'- 11''14'- 10''13'- 6''11'- 9''18'- 11''17'- 2''15'- 0''23'- 0''20'- 11''18'- 3''12'- 1''11'- 2''9'- 10''15'- 2''13'- 11''11'- 7''18'- 1''16'- 4''13'- 6''11'- 8''10'- 8''9'- 4''
14'- 7''13'- 3''11'- 3''17'- 6''15'- 7''12'- 11''

Product

PWT Treated LVL

Pressure Treated
No. 2 Southern pine
Pressure Treated
No. 2 Hem-fir (incised)

Notes:					1.	End bearing length must be at least 1.5".
2. Minimum bearing at cantilever is 3".
3. Maximum cantilever 2' in addition to span shown.
4. Design conditions outside the scope of this guide may be designed using CSD software.
5. Joist tables are based upon 100% duration of load.
6. Spans based on hanger on ledger side and 3" bearing on LVL beam.

pacificwoodtech.com|

page 4

NominalSize[in]Actual
Size
[in]

2x6
2x8
2 x 102 x 122x8
2 x 102 x 122x8
2 x 102 x 12

1½ x 5½
1½ x 7¼
1½ x 9¼
1½ x 11¼
1½ x 7¼
1½ x 9¼
1½ x 11¼
1½ x 7¼
1½ x 9¼
1½ x 11¼

With or Without 2' Cantilever
Joist Spacing (o.c.)
12"
16"
24"
9'- 10"8'- 11"7'- 9"
12'- 11"11'- 9"10'- 3"16'- 6"15'- 0"13'- 1"20'- 2"18'- 3"16'- 0"10'- 9"9'- 10"8'- 7"
13'- 4"12'- 0"10'- 0"15'- 10"14'- 0"11'- 7"10'- 5"9'- 7"
8'- 1"
12'- 10"11'- 7"9'- 8"
15'- 2"13'- 3"10'- 4"

PWT Treated LVL

Beam Spans
Improved Performance
DRY USE — 40 PSF LIVE LOAD AND 10 PSF DEAD LOAD — L/480

DRY USE — 60 PSF LIVE LOAD AND 10 PSF DEAD LOAD — L/480

Deck Joist Span with 2' Cantilever [ft]Deck Joist Span with 2' Cantilever [ft]

Size
[in]

6

8

10

12

14

16

18

8

10

12

14

16

18

20

3½ x 9½
3½ x 11⅞
3½ x 14
3½ x 16
3½ x 18
5¼ x 5½
5¼ x 7¼
5¼ x 9½
5¼ x 11⅞
5¼ x 145¼ x 16
5¼ x 18

14'- 7"18'- 3"21'- 7"24'- 9"27'- 10"9'- 5"
12'- 6"16'- 7"20'- 10"24'- 8"28'- 3"31'- 10"13'- 6"16'- 11"20'- 0"22'- 11"25'- 10"8'- 8"
11'- 7"15'- 4"19'- 4"22'- 10"26'- 2"29'- 6"12'- 8"15'- 11"18'- 10"21'- 7"24'- 4"8'- 2"
10'- 11"14'- 5"18'- 2"21'- 6"24'- 7"27'- 9"12'- 0"15'- 1"17'- 10"20'- 6"23'- 1"7'- 8"
10'- 4"13'- 8"17'- 2"20'- 4"23'- 4"26'- 4"11'- 6"14'- 5"17'- 1"19'- 7"22'- 0"7'- 4"
9'- 10"13'- 1"16'- 5"19'- 5"22'- 4"25'- 2"11'- 0"13'- 10"16'- 5"18'- 10"19'- 6"7'- 1"
9'- 5"
12'- 6"15'- 9"18'- 8"21'- 5"24'- 2"10'- 8"13'- 5"15'- 10"17'- 6"17'- 6"
6'- 9"
9'- 1"
12'- 1"15'- 3"18'- 0"20'- 8"23'- 4"

Size
[in]

6

8

10

12

14

16

18

20

3½ x 9½
3½ x 11⅞
3½ x 14
3½ x 16
3½ x 18
5¼ x 5½
5¼ x 7¼
5¼ x 9½
5¼ x 11⅞
5¼ x 145¼ x 16
5¼ x 18

12'- 8"15'- 11"18'- 10"21'- 7"24'- 4"8'- 2"
10'- 11"14'- 5"18'- 2"21'- 6"24'- 7"27'- 9"11'- 9"14'- 9"17'- 6"20'- 0"22'- 7"
7'- 6"
10'- 1"13'- 4"16'- 10"19'- 11"22'- 10"25'- 8"11'- 0"13'- 10"16'- 5"18'- 10"20'- 11"7'- 1"
9'- 5"
12'- 6"15'- 9"18'- 8"21'- 5"24'- 2"10'- 6"13'- 2"15'- 7"17'- 10"17'- 11"
6'- 8"
8'- 11"11'- 10"15'- 0"17'- 9"20'- 4"22'- 11"10'- 0"12'- 7"14'- 11"15'- 7"15'- 7"6'- 4"
8'- 6"
11'- 4"14'- 3"16'- 11"19'- 5"21'- 11"

9'- 7"
12'- 1"13'- 10"13'- 10"13'- 10"6'- 1"
8'- 2"
10'- 11"13'- 9"16'- 3"18'- 8"20'- 9"9'- 3"
11'- 8"12'- 5"12'- 5"12'- 5"5'- 10"7'- 11"10'- 6"13'- 3"15'- 8"18'- 0"18'- 8"Deck Joist Simple Span [ft]Code Minimums

DRY USE — 40 PSF LIVE LOAD AND 10 PSF DEAD LOAD — L/360

8

Size
[in]

8

10

12

14

10

12

14

16

14

16

18

DRY USE — 60 PSF LIVE LOAD AND 10 PSF DEAD LOAD — L/360
Deck Joist Span with 2' Cantilever [ft]
16

18

Size
[in]

Deck Joist Simple Span [ft]812Deck Joist Simple Span [ft]Deck Joist Span with 2' Cantilever [ft]
6

10

18

20

3½ x 9½
16'- 1" 14'- 11" 14'- 0" 13'- 3" 12'- 8" 12'- 2" 11'- 9"3½ x 11⅞
20'- 2" 18'- 8" 17'- 7" 16'- 8" 15'- 11" 15'- 4" 14'- 9"3½ x 1423'- 10" 22'- 1" 20'- 9" 19'- 8" 18'- 10" 18'- 1" 17'- 6"3½ x 1627'- 3" 25'- 3" 23'- 9" 22'- 7" 21'- 7" 19'- 6" 17'- 6"3½ x 1830'- 9" 28'- 6" 26'- 9" 25'- 2" 22'- 0" 19'- 6" 17'- 6"5¼ x 5½
10'- 5"9'- 7"
9'- 0"
8'- 6"
8'- 2"
7'- 10"7'- 6"
5¼ x 7¼
13'- 10" 12'- 10" 12'- 0" 11'- 5" 10'- 11" 10'- 5" 10'- 1"5¼ x 9½
18'- 3" 16'- 11" 15'- 11" 15'- 1" 14'- 5" 13'- 10" 13'- 4"5¼ x 11⅞
23'- 0" 21'- 3" 20'- 0" 19'- 0" 18'- 2" 17'- 5" 16'- 10"
5¼ x 1427'- 2" 25'- 2" 23'- 8" 22'- 6" 21'- 6" 20'- 7" 19'- 11"
5¼ x 1631'- 1" 28'- 10" 27'- 1" 25'- 9" 24'- 7" 23'- 8" 22'- 10"
5¼ x 18
35'- 1" 32'- 6" 30'- 7" 29'- 0" 27'- 9" 26'- 8" 25'- 8"Notes:
1.	Beam span calculations assume simple spans.
2. Beam depth shall be greater than or equal to depth of joists with a flush beam condition.
3. Bearing length must be at least 1.75".
4. Beams require support across their full width.
5. Conditions outside the scope of this guide may be designed using CSD Software.
6. Beam spans are based upon 100% duration of load.
7. Beam spans developed using apparent E.

3½ x 9½
3½ x 11⅞
3½ x 14
3½ x 16
3½ x 18
5¼ x 5½
5¼ x 7¼
5¼ x 9½
5¼ x 11⅞
5¼ x 145¼ x 16
5¼ x 18

6

8

10

12

14

16

18

Deck Joist Simple Span [ft]
8

10

12

14

16

18

20

14'- 0"17'- 7"20'- 9"23'- 9"26'- 9"9'- 0"
12'- 0"15'- 11"20'- 0"23'- 8"27'- 1"30'- 7"12'- 11"16'- 3"19'- 3"22'- 1"24'- 10"8'- 4"
11'- 2"14'- 9"18'- 6"21'- 11"25'- 2"28'- 4"12'- 2"15'- 4"18'- 1"20'- 9"20'- 11"7'- 10"10'- 5"13'- 10"17'- 5"20'- 7"23'- 8"26'- 8"11'- 7"14'- 6"17'- 2"17'- 11"17'- 11"
7'- 5"
9'- 11"13'- 1"16'- 6"19'- 7"22'- 5"25'- 3"11'- 0"13'- 10"15'- 7"15'- 7"15'- 7"7'- 1"
9'- 5"
12'- 6"15'- 9"18'- 8"21'- 5"23'- 5"10'- 7"13'- 4"13'- 10"13'- 10"13'- 10"
6'- 9"
9'- 1"
12'- 0"15'- 2"17'- 11"20'- 7"20'- 9"10'- 3"12'- 5"12'- 5"12'- 5"12'- 5"6'- 6"
8'- 9"
11'- 7"14'- 7"17'- 4"18'- 8"18'- 8"

Important!
PWT Treated LVL may be used in severe above-ground UC3B applications. PWT Treated LVL has a moisture content of
6-8% when it leaves the factory. It is imperative that PWT Treated LVL remains protected from precipitation and high humidity until it is installed.
Once installed and flashed as stated in the installation guidelines, it will remain dimensionally stable for many years to come.

pacificwoodtech.com|

page 5PWT Treated LVL

Columns
DRY USE — ALLOWABLE AXIAL LOAD [LB]
Load Duration

100%

115%

125%

Column Length (ft)

3½" x 3½"

3½" x 3½"

3½" x 3½"

6'-0"
7'-0"
8'-0"
9'-0"
10'-0"
11'-0"
12'-0"

10,500
8,825
7,450
6,350
5,450
4,725
4,125

11,200
9,325
7,800
6,600
5,650
4,875
4,225

11,625
9,600
8,000
6,750
5,750
4,950
4,300

Notes:
1. Table values are based on:• Solid, one-piece column• Axial loads only
• Load eccentricity of either 1/6 column width or thickness• Bracing in both directions at column ends
2.	For all other conditions, such as side loads and multiple-ply columns, consult a registered,professional engineer.
3.	Column capacity may be limited by the capacity of wood plates, the slab, column caps/
bases, etc.
4.	No drilling except for column cap or base installation. Follow hardware manufacturer's
instructions.
5. Calculations based on ANSI/AWC NDS-2015.
Columns — Reference Design Values(1)True (Shear-Free) Modulus of Elasticity, E = 2,000,000 psi (1)(3)Apparent Modulus of Elasticity, E = 1,900,000 psi (1)MOE for Stability Calculations, Emin = 985,000 psi (1)(4)
Bending (beam), Fb = 2,800 psi x (12/d1)0.2 (2)d1 = wide-face dimension [inches]
Bending (plank), Fb = 2,800 psi x (12/d2)0.33 (2)d2 = narrow-face dimension [inches]
Compression Parallel to Grain, Fc = 2,500 psi
Compression perpendicular to grain [psi], Fc = 850 psi (1)Coefficient of Variation, COVE = 0.10
(1) Do not adjust for load duration.
(2) Adjust by 1.04 for repetitive members as defined in the NDS.
(3) True (Shear-Free) modulus of elasticity does not account for shear deformation.
(4) Emin is calculated using the Apparent Modulus of Elasticity in accordance with the NDS.
(5) See Product Reports PR-L329, ESR-2909, and FL 39762.
T

Sill Plate• All the features and benefits of PWT Treated LVL• Long, straight, and true for quick installation and minimal waste• Non-corrosive—does not require special galvanized hardware

REFERENCE DESIGN VALUES (DRY USE — 100% LOAD DURATION)
Beam Orientation Plank Orientation
Modulus of Elasticity, E(1)(4) = 2,000,000 psi
2,000,000 psi
Adjusted Modulus of Elasticity, Emin(1)(5) = 985,000 psi
985,000 psi
Bending Stress, Fb(2)(3) = 2,800 psi
2,800 psi
Compression Perpendicular to Grain, Fc (1) = 850 psi
650 psiCompression Parallel to Grain, Fc|| = 2,500 psi
2,500 psi
Horizontal Shear, Fv = 285 psi
150 psi(1) Do not adjust for load duration.
(2) Adjust by (12/d)0.2, where d is the depth of the member [inches].
(3) Adjust by 1.04 for repetitive members as defined in the NDS.
(4) True (Shear-Free) modulus of elasticity does not account for shear deformation.
(5)	Reference modulus of elasticity for beam & column stability calculations in accordance with
the NDS.
(6) PWT Treated used as sill plate requires gasket seal.
(7)	See APA Product Reports PR-L329 and ESR-2909 for additional design criteria.
T

PWT Treated LVL

pacificwoodtech.com|

page 6

PWT Treated LVL

Beams 100%
DRY USE — ALLOWABLE UNIFORM LOADS* – POUNDS PER LINEAL FOOT
Span (ft)
8

10

12

14

16

18

20

DRY USE

22

24

26

28

30

32

34

36

38

40

Key
LL
TL
BRG
LL
TL
BRG
LL
TL
BRG
LL
TL
BRG
LL
TL
BRG
LL
TL
BRG
LL
TL
BRG
LL
TL
BRG
LL
TL
BRG
LL
TL
BRG
LL
TL
BRG
LL
TL
BRG
LL
TL
BRG
LL
TL
BRG
LL
TL
BRG
LL
TL
BRG
LL
TL
BRG

9½"
687
746
2/5
352
511
1.7 / 4.3
204301
1.5 / 3.1
128
188
1.5 / 386
125
1.5 / 360
86
1.5 / 3

1¾" Beam
11⅞"979
2.6 / 6.6687
745
2.5 / 6.3
398
529
2.2 / 5.4251
370
1.8 / 4.4
168
246
1.5 / 3.4118
171
1.5 / 386
123
1.5 / 365
91
1.5 / 3

* Can be applied to the beam in addition to its own weight.
Simple or multiple beam spans.
Beam load values developed with apparent E.

14"
1208
3.3 / 8.2909
3.1 / 7.7652
712
2.9 / 7.2410
522
2.5 / 6.2275
398
2.2 / 5.4
193283
1.8 / 4.4141
205
1.5 / 3.6
106152
1.5 / 381
116
1.5 / 364
90
1.5 / 351
71
1.5 / 3

9½"
1374
1492
2/5
704
1022
1.7 / 4.3
408
602
1.5 / 3.1256376
1.5 / 3172250
1.5 / 3120
172
1.5 / 3

3½" Beam or 2-ply
11⅞"
14"
16"
1958
2416
2888
2.6 / 6.6 3.3 / 8.2 3.9 / 9.8
1374
1490
1818
2150
2.5 / 6.3 3.1 / 7.7 3.6 / 9.1
796
1304
1058
1424
1710
2.2 / 5.4 2.9 / 7.2 3.5 / 8.7
502
820
1226
740
1044
1328
1.8 / 4.4 2.5 / 6.2 3.2 / 7.9
336
550
820
492
796
1014
1.5 / 3.4 2.2 / 5.4 2.8 / 6.9
236
386
576
342
566
798
1.5 / 3
1.8 / 4.4 2.5 / 6.1
172
282
420
246
410
616
1.5 / 3
1.5 / 3.6 2.1 / 5.3
130
212
316
182
304
460
1.5 / 3
1.5 / 3
1.8 / 4.4
162
244
232
350
1.5 / 3
1.5 / 3.7
128
192
180
272
1.5 / 3
1.5 / 3.1
102
154
142
216
1.5 / 3
1.5 / 3124
172
1.5 / 3102
140
1.5 / 318"3404
4.6 / 11.52504
4.2 / 10.6
1978
4 / 10.11634
3.9 / 9.71168
1254
3.4 / 8.5
820
988
3 / 7.6598796
2.7 / 6.8450656
2.5 / 6.2346
504
2.1 / 5.2272
392
1.8 / 4.5218
310
1.5 / 3.8178250
1.5 / 3.4
146
202
1.5 / 3122
166
1.5 / 3102
138
1.5 / 3

9½"
2061
2238
2/5
1056
1533
1.7 / 4.3612
903
1.5 / 3.1384
564
1.5 / 3258
375
1.5 / 3180258
1.5 / 3

5¼" Beam or 3-ply
11⅞"
14"
16"
2937
3624
4332
2.6 / 6.6 3.3 / 8.2 3.9 / 9.8
2061
2235
2727
3225
2.5 / 6.3 3.1 / 7.7 3.6 / 9.1
1194
1956
1587
2136
2565
2.2 / 5.4 2.9 / 7.2 3.5 / 8.7
753
1230
1839
1110
1566
1992
1.8 / 4.4 2.5 / 6.2 3.2 / 7.9
504
825
1230
738
1194
1521
1.5 / 3.4 2.2 / 5.4 2.8 / 6.9
354
579
864
513
849
1197
1.5 / 3
1.8 / 4.4 2.5 / 6.1
258
423
630
369
615
924
1.5 / 3
1.5 / 3.6 2.1 / 5.3
195
318
474
273
456
690
1.5 / 3
1.5 / 3
1.8 / 4.4
243
366
348
525
1.5 / 3
1.5 / 3.7
192
288
270
408
1.5 / 3
1.5 / 3.1
153
231
213
324
1.5 / 3
1.5 / 3186
258
1.5 / 3153
210
1.5 / 318"5106
4.6 / 11.53756
4.2 / 10.6
2967
4 / 10.1
2451
3.9 / 9.71752
1881
3.4 / 8.5
1230
1482
3 / 7.6897
1194
2.7 / 6.8675984
2.5 / 6.2519
756
2.1 / 5.2
408
588
1.8 / 4.5327
465
1.5 / 3.8267375
1.5 / 3.4219
303
1.5 / 3183
249
1.5 / 3153
207
1.5 / 3

Key to Table:
LL = Maximum live load – limits deflection to L/360
TL = Maximum total load – limits deflections to L/240 (or a maximum of 0.3125" for beams
7¼" deep or less)
BRG = Required end / intermediate bearing length (inches), based on bearing stress of 850 psi.

pacificwoodtech.com|

page 7

PWT Treated LVL

Beams 115%
DRY USE — ALLOWABLE UNIFORM LOADS* — POUNDS PER LINEAL FOOT
Span (ft)
8

10

12

14

16

18

20

DRY USE

22

24

26

28

30

32

34

36

38

40

Key
LL
TL
BRG
LL
TL
BRG
LL
TL
BRG
LL
TL
BRG
LL
TL
BRG
LL
TL
BRG
LL
TL
BRG
LL
TL
BRG
LL
TL
BRG
LL
TL
BRG
LL
TL
BRG
LL
TL
BRG
LL
TL
BRG
LL
TL
BRG
LL
TL
BRG
LL
TL
BRG
LL
TL
BRG

9½"
859
2.3 / 5.8
528
588
2/5
306
403
1.6 / 4.1
192
252
1.5 / 3129
168
1.5 / 391
116
1.5 / 3

1¾" Beam
11⅞"
1127
3 / 7.6858
2.9 / 7.3597
609
2.5 / 6.2376
446
2.1 / 5.3
252
330
1.8 / 4.5
177
230
1.5 / 3.6129
166
1.5 / 397
124
1.5 / 3

* Can be applied to the beam in addition to its own weight.
Simple or multiple beam spans.
Beam load values developed with apparent E.

14"
1390
3.8 / 9.41047
3.5 / 8.9820
3.3 / 8.3
601
2.9 / 7.1412
458
2.5 / 6.2290
361
2.2 / 5.6
211
275
1.9 / 4.7
159
205
1.6 / 3.9
122157
1.5 / 3.3
96122
1.5 / 377
96
1.5 / 39½"
1718
2.3 / 5.8
1056
1176
2/5
612
806
1.6 / 4.1384
504
1.5 / 3258
336
1.5 / 3182
232
1.5 / 3

3½" Beam or 2-ply
11⅞"
14"
16"
2254
2780
3322
3 / 7.6
3.8 / 9.4 4.5 / 11.2
1716
2094
2474
2.9 / 7.3 3.5 / 8.9 4.2 / 10.5
1194
1218
1640
1970
2.5 / 6.2 3.3 / 8.3
4 / 10
752
892
1202
1530
2.1 / 5.3 2.9 / 7.1 3.6 / 9.1
504
824
660
916
1168
1.8 / 4.5 2.5 / 6.2 3.2 / 7.9
354
580
864
460
722
920
1.5 / 3.6 2.2 / 5.6 2.8 / 7.1
258
422
630
332
550
742
1.5 / 3
1.9 / 4.7 2.5 / 6.4
194
318
474
248
410
610
1.5 / 3
1.6 / 3.9 2.3 / 5.8
244
364
314
472
1.5 / 3.3
2 / 4.9
192
286
244
368
1.5 / 3
1.7 / 4.2
154
230
192
292
1.5 / 3
1.5 / 3.6
186
234
1.5 / 3.1
154
190
1.5 / 318"3916
5.3 / 13.2
2882
4.9 / 12.2
2278
4.6 / 11.6
1882
4.5 / 11.2
1446
3.9 / 9.81138
3.5 / 8.7
898
918
3.1 / 7.9674756
2.9 / 7.1
520634
2.6 / 6.6408
528
2.4 / 5.9328420
2.1 / 5.1
266
338
1.8 / 4.5220276
1.6 / 3.9
182
228
1.5 / 3.5154
188
1.5 / 3.1

9½"
2577
2.3 / 5.8
1584
1764
2/5
918
1209
1.6 / 4.1
576
756
1.5 / 3387
504
1.5 / 3273
348
1.5 / 3

5¼" Beam or 3-ply
11⅞"
14"
16"
3381
4170
4983
3 / 7.6
3.8 / 9.4 4.5 / 11.2
2574
3141
3711
2.9 / 7.3 3.5 / 8.9 4.2 / 10.5
1791
1827
2460
2955
2.5 / 6.2 3.3 / 8.3
4 / 10
1128
1338
1803
2295
2.1 / 5.3 2.9 / 7.1 3.6 / 9.1
756
1236
990
1374
1752
1.8 / 4.5 2.5 / 6.2 3.2 / 7.9
531
870
1296
690
1083
1380
1.5 / 3.6 2.2 / 5.6 2.8 / 7.1
387
633
945
498
825
1113
1.5 / 3
1.9 / 4.7 2.5 / 6.4
291
477
711
372
615
915
1.5 / 3
1.6 / 3.9 2.3 / 5.8
366
546
471
708
1.5 / 3.3
2 / 4.9
288
429
366
552
1.5 / 3
1.7 / 4.2
231
345
288
438
1.5 / 3
1.5 / 3.6279
351
1.5 / 3.1231285
1.5 / 318"5874
5.3 / 13.24323
4.9 / 12.23417
4.6 / 11.62823
4.5 / 11.2
2169
3.9 / 9.81707
3.5 / 8.71347
1377
3.1 / 7.91011
1134
2.9 / 7.1780
951
2.6 / 6.6
612
792
2.4 / 5.9492630
2.1 / 5.1399
507
1.8 / 4.5330414
1.6 / 3.9273
342
1.5 / 3.5231282
1.5 / 3.1

Key to Table:
LL = Maximum live load – limits deflection to L/360
TL = Maximum total load – limits deflections to L/240 (or a maximum of 0.3125" for beams
7¼" deep or less)
BRG = Required end / intermediate bearing length (inches), based on bearing stress of 850 psi.

pacificwoodtech.com|

page 8PWT Treated LVL

Beams 125%
DRY USE — ALLOWABLE UNIFORM LOADS* — POUNDS PER LINEAL FOOT
Span (ft)
8

10

12

14

16

18

20

DRY USE

22

24

26

28

30

32

34

36

38

40

Key
LL
TL
BRG
LL
TL
BRG
LL
TL
BRG
LL
TL
BRG
LL
TL
BRG
LL
TL
BRG
LL
TL
BRG
LL
TL
BRG
LL
TL
BRG
LL
TL
BRG
LL
TL
BRG
LL
TL
BRG
LL
TL
BRG
LL
TL
BRG
LL
TL
BRG
LL
TL
BRG
LL
TL
BRG

9½"
934
2.5 / 6.3
528
639
2.2 / 5.4306403
1.6 / 4.1
192
252
1.5 / 3129
168
1.5 / 391
116
1.5 / 3

1¾" Beam
11⅞"
14"
1225
1512
3.3 / 8.3 4.1 / 10.2933
1138
3.2 / 7.9 3.8 / 9.6
597
662
892
2.7 / 6.7 3.6 / 9.1
376
616
485
654
2.3 / 5.8 3.1 / 7.8
252
412
330
499
1.8 / 4.5 2.7 / 6.8
177
290
230
380
1.5 / 3.6 2.3 / 5.8
129
211
166
275
1.5 / 3
1.9 / 4.7
97
159
124
205
1.5 / 3
1.6 / 3.9
122157
1.5 / 3.3
96122
1.5 / 377
96
1.5 / 3

* Can be applied to the beam in addition to its own weight.
Simple or multiple beam spans.
Beam load values developed with apparent E.

9½"
1868
2.5 / 6.3
1056
1278
2.2 / 5.4612
806
1.6 / 4.1384
504
1.5 / 3258
336
1.5 / 3182
232
1.5 / 3

3½" Beam or 2-ply
11⅞"
14"
16"
2450
3024
3612
3.3 / 8.3 4.1 / 10.2 4.9 / 12.2
1866
2276
2690
3.2 / 7.9 3.8 / 9.6 4.5 / 11.4
1194
1324
1784
2142
2.7 / 6.7 3.6 / 9.1 4.3 / 10.9
752
1232
970
1308
1664
2.3 / 5.8 3.1 / 7.8 3.9 / 9.9
504
824
1232
660
998
1270
1.8 / 4.5 2.7 / 6.8 3.5 / 8.6
354
580
864
460
760
1000
1.5 / 3.6 2.3 / 5.8 3.1 / 7.7
258
422
630
332
550
808
1.5 / 3
1.9 / 4.7 2.8 / 6.9
194
318
474
248
410
618
1.5 / 3
1.6 / 3.9 2.3 / 5.8
244
364
314
472
1.5 / 3.3
2 / 4.9
192
286
244
368
1.5 / 3
1.7 / 4.2
154
230
192
292
1.5 / 3
1.5 / 3.6
186
234
1.5 / 3.1
154
190
1.5 / 318"4258
5.7 / 14.43134
5.3 / 13.2
2478
5 / 12.62048
4.9 / 12.1
1572
4.3 / 10.7
1232
1238
3.8 / 9.5898
1000
3.4 / 8.5674
824
3.1 / 7.8520676
2.8 / 7408
528
2.4 / 5.9328420
2.1 / 5.1
266
338
1.8 / 4.5220276
1.6 / 3.9
182
228
1.5 / 3.5154
188
1.5 / 3.1

9½"
2802
2.5 / 6.3
1584
1917
2.2 / 5.4918
1209
1.6 / 4.1
576
756
1.5 / 3387
504
1.5 / 3273
348
1.5 / 3

5¼" Beam or 3-ply
11⅞"
14"
16"
3675
4536
5418
3.3 / 8.3 4.1 / 10.2 4.9 / 12.2
2799
3414
4035
3.2 / 7.9 3.8 / 9.6 4.5 / 11.4
1791
1986
2676
3213
2.7 / 6.7 3.6 / 9.1 4.3 / 10.9
1128
1848
1455
1962
2496
2.3 / 5.8 3.1 / 7.8 3.9 / 9.9
756
1236
1848
990
1497
1905
1.8 / 4.5 2.7 / 6.8 3.5 / 8.6
531
870
1296
690
1140
1500
1.5 / 3.6 2.3 / 5.8 3.1 / 7.7
387
633
945
498
825
1212
1.5 / 3
1.9 / 4.7 2.8 / 6.9
291
477
711
372
615
927
1.5 / 3
1.6 / 3.9 2.3 / 5.8
366
546
471
708
1.5 / 3.3
2 / 4.9
288
429
366
552
1.5 / 3
1.7 / 4.2
231
345
288
438
1.5 / 3
1.5 / 3.6279
351
1.5 / 3.1231285
1.5 / 318"6387
5.7 / 14.44701
5.3 / 13.2
3717
5 / 12.63072
4.9 / 12.1
2358
4.3 / 10.7
1848
1857
3.8 / 9.51347
1500
3.4 / 8.51011
1236
3.1 / 7.8780
1014
2.8 / 7612
792
2.4 / 5.9492630
2.1 / 5.1399
507
1.8 / 4.5330414
1.6 / 3.9273
342
1.5 / 3.5231282
1.5 / 3.1

Key to Table:
LL = Maximum live load – limits deflection to L/360
TL = Maximum total load – limits deflections to L/240 (or a maximum of 0.3125" for beams
7¼" deep or less)
BRG = Required end / intermediate bearing length (inches), based on bearing stress of 850 psi.

pacificwoodtech.com|

page 9

PWT Treated LVL

Stair Stringers
Improved Performance
MAXIMUM STRINGER RUN
DRY USE — 40 PSF LIVE LOAD AND 12 PSF DEAD LOAD
Tread Width

36"

MAXIMUM STRINGER RUN
DRY USE — 60 PSF LIVE LOAD AND 12 PSF DEAD LOAD

42"

44"

48"

Stringer Depth

2
Stringers

3
Stringers

3
Stringers

3
Stringers

3
Stringers

Tread Width

42"

44"

48"

2
Stringers

Stringer Depth

2-ply 1½" x 11¼"

10'-10''12'-6''

11'-8''

11'-8''

10'-10''2-ply 1¾" x 11⅞"

12'-6''

14'-2''

14'-2''

13'-4''

13'-4''

2-ply 1¾" x 14"14'-2''

14'-2''

14'-2''

14'-2''

14'-2''

36"
3
Stringers

3
Stringers

3
Stringers

3
Stringers

2-ply 1½" x 11¼"

9'-2''

10'-10''10'-0''

10'-0''

10'-0''

2-ply 1¾" x 11⅞"

10'-10''12'-6''

12'-6''

11'-8''

11'-8''

2-ply 1¾" x 14"14'-2''

14'-2''

14'-2''

14'-2''

14'-2''

42"

44"

48"

3
Stringers

3
Stringers

3
Stringers
7'-6''

Code Minimums
MAXIMUM STRINGER RUN
DRY USE — 40 PSF LIVE LOAD AND 12 PSF DEAD LOAD
Tread Width

36"

MAXIMUM STRINGER RUN
DRY USE — 60 PSF LIVE LOAD AND 12 PSF DEAD LOAD

42"

44"

48"

3
Stringers

3
Stringers

3
Stringers

Stringer Depth

2
Stringers

9'-2''

9'-2''

1½" x 11¼"

7'-6''

8'-4''

8'-4''

8'-4''

10'-10''10'-10''

1¾" x 11⅞"

9'-2''

10'-0''

10'-0''

9'-2''

9'-2''

14'-2''

1¾" x 14"12'-6''

14'-2''

13'-4''

13'-4''

13'-4''

2
Stringers

3
Stringers

1½" x 11¼"

8'-4''

10'-0''

9'-2''

1¾" x 11⅞"

10'-0''

11'-8''

10'-10''

1¾" x 14"14'-2''

14'-2''

14'-2''

14'-2''

Stringer Depth

Stair Stringer Notes:
1. Table values are based on a maximum step rise of 7¾'' and a minimum step run of 10''.
2. Verify compliance with the local building code.
3. Table values are limited by deflection equal to L/360 at live load or L/240 at total load.
4. Stringer runs are based on 100% duration of load.
5.	For other design loads, stair constructions, or attachment details, consult with the design
professional.
6. Stringers are unstable until treads are installed.

Tread Width

36"
3Stringers

7. To minimize squeaks, install treads with panel adhesive in addition to nails or screws.
8.	Stringers shall be separated from concrete or masonry with 1" stand-off.
9. If only cut stringers are used, a minimum of three stringers are required.
10. Stringer run refers to the horizontal projection of the stairs.
11.	Single ply stringers are acceptable; however, 3" minimum stringer width isrecommended. Use appropriate thickness based upon in-use exposure and climate.
12. Stringer run values developed with apparent E.

Laying out the bottom of a stair stringer with building hardware
Installation recommendations:
1.	Place the finished stair stringer into its proper position, without nailing it (this may require
two or more people or in some cases, a crane, to lift the heavy objects).
2.	Place the hardware or base plate below the stringer and mark its exact location.
3.	Remove the stair stringer and fasten the base plate securely to the concrete foundation.
4. Install stair stringer.
Note:
A raised base plate will inhibit moisture in the concrete slab (or surrounding area) fromabsorbing into and eventually destroying the wooden stringer.

1" min. offset required

For details on holes in LVL beams see pacificwoodtech.com.
pacificwoodtech.com|

page 10PWT Treated Multiple-Ply

All fasteners and carrying hardware must be
exterior type and code accepted.
See strongtie.com/deckcenter for more information.

Beam Assembly
Combinations of 1¾" Plies
NAILS

STRONG-DRIVE® SDWS TIMBER SCREWS

3-Ply

2-Ply

4-Ply

2-Ply
6" min. end
distance

Nail Spacing

3-Ply

4-Ply

8" min. between
fasteners
17⁄16" min. edge distance⅝" min. stagger

⅝" min.
betweenstaggeredrows

4" min.
betweennon-staggeredrows

Spacing Requirements

ALLOWABLE UNIFORM SIDE LOAD (PLF)

ALLOWABLE UNIFORM LOAD APPLIED TO EITHER OUTSIDE MEMBER (PLF)

16d Common Nails
3¼" x 0.131" Nails
3½" x 0.162"
2 Rows3 Rows2 Rows3 Rows
at 12" o.c.
at 12" o.c.
at 12" o.c.
at 12" o.c.
390
585
565
845
290
435
425
635
Use bolts for this condition (see note 1).

Structural Composite Lumber
NominalScrew SDWS Timber Screws SDWS Timber Screws SDWS Timber Screws
Length@ 12" o.c.
@ 16" o.c.
@ 24" o.c.
[in]
2 Rows3 Rows2 Rows3 Rows2 Rows 3 Rows
3½
1020
1530
765
1148
510
765
3½
765
1148
574
861
383
574
5
1215
1823
911
1367
608
911
6
1080
1620
810
1215
540
810

2-Ply (2–1¾")
3-Ply (3–1¾")
4-Ply (4–1¾")
Notes:
1. Minimum fastener schedule for smaller side loads and top-loaded beams:
2-ply and 3-ply beams 12" deep or less:2 rows 3¼" x 0.131" at 12" o.c.
2-ply and 3-ply beams deeper than 12":3 rows 3¼" x 0.131" at 12" o.c.
4-ply, all beam depths:
2 rows ½" bolts at 24" o.c.
2. The table values for nails may be doubled for 6" o.c. and tripled for 4" o.c. nail spacings.
3. The nail schedules shown apply to both sides of a three-ply beam.

2-ply
3-ply
3-ply
4-ply
Notes:
1. Each ply is assumed to carry load in proportion to its width.
2. Loads may be applied to either the head side and/or point side concurrently.
3. Tables are based on Simpson Strong-Tie Fastening Systems Catalog C-F-2019TECHSUP.
4. Please consult strongtie.com for the latest fastener details and data.

4.	The table values apply to bolts meeting the requirements of ANSI/ASME Standard B18.2.1.
A standard cut washer, or metal plate or strap of equal or greater dimensions, shall be
provided between the wood and the bolt head, and between the wood and the nut. The
distance from the edge of the beam to the bolt holes must be at least 2" for ½" bolts. Bolt
holes shall be the same diameter as the bolt.
5. 7" wide beams must be loaded from both sides and/or top-loaded.
6. Beams wider than 7" must be designed by the engineer of record.
7. Load duration factors may be applied to the table values.
8. For proprietary fastener alternatives, consult the manufacturer's literature.

SCREW DATA

How to Use the Maximum Uniform
Side Load Table
EXAMPLE: THREE 1¾" PLIES LOADED FROM BOTH SIDES AND ABOVE
1.	Use allowable load tables or sizing software
to size the beam to carry a total load of(300 + 610 + 550) = 1460 plf.
2.	Refer to the Condition B row in the table.
Scan across the row from left to right for atable value greater than 550 plf, which is
the greatest side load carried by the beam.
The fourth value in the row indicates that3 rows of 16d common nails at 12" o.c. willaccommodate a side load of 635 plf, whichis greater than the 550 plf required. Use 3
rows of 16d common nails at 12" o.c., fromboth sides, to assemble the beam.

		

610 plf

300 plf		

550 plf

Model No.

Nominal Screw Length [in]Thread Length [in]SDWS22312DBB
3½
2
SDWS22500DB
52¾
SDWS22600DB
62¾
Notes:
1.	The SDWS TIMBER screws listed are coated with double-barrier coating that provides
corrosion resistance equivalent to hot-dip galvanization, making them suitable forcertain exterior and preservative-treated wood applications as described in theevaluation report.

Installation•	SDWS TIMBER screws install best with a low speed ½" drill and a T-40 6-lobe bit. The
matched bit included with the screws is recommended for best results.
•	Screw heads that are countersunk flush to the wood surface are acceptable if the screw
has not spun out.
•	Individual screw locations may be adjusted up to 3" to avoid conflicts with otherhardware or to avoid lumber defects.

To review the PWT Treated Installation Guide, please visit
pacificwoodtech.com/treated.
pacificwoodtech.com|

page 11

Fastener Guidelines

Pre-drilling may reduce splitting.

Proper connectors and fasteners:

Appropriate connectors and fasteners must be used for the conditions-of-use to avoid failure due to corrosion or overloading.
In all exterior applications or any other conditions where excess moisture is present, high quality, exterior grade, stainless steel or hot dipped galvanized or durable grade
fasteners are required.
SCREWSLVL Thickness

1½"
Minimum

LVL DepthAll

LVL Orientation

7¼"
Minimum

Edge

1½"
Minimum

All

Face

1¾"
Minimum

All

#7
#8
#9
#10 SD Connector*

Edge

1¾"
Minimum

Shank Diameter[in]

Screw Size

#10 SD Connector#12LedgerLOK
0.25"*
0.27"*
⅜ x 4" Lag*
#8
#9
#10 SD Connector#12LedgerLOK
0.25"
0.27"*
⅜ x 4" Lag*

Face

Minimum End Distance
[in]

0.128
0.5
0.130
0.75
0.134
1.75
0.169
0.75
#12 and larger sizes not recommended
0.169
3
0.175
3
0.230
3
0.250
3
0.270
3
0.375
3
0.130
0.75
0.134
1.75
0.169
2.5
0.175
2.5
predrilling recommended for larger sizes
0.230
2.5
0.250
2.5
0.276
2.5
0.375
3

Minimum Screw
Spacing [in]
1
1.5
3
2
3
3
3
3
3
3
2
3
5
4
3
2
3
4

Notes:
1. Edge distance shall be sufficient to prevent splitting.
2. Fastener sizes and closest on-center spacing not specifically described above are beyond the scope of this publication.
3. Assumes self-tapping heads.
*predrilling required

NAILS
LVL Thickness

1½"
Minimum

LVL Depth

LVL Orientation

7¼"
Minimum

Edge

All

Face

Nail Size

Nail Diameter[in]

Minimum End Distance[in]

Minimum Nail
Spacing [in]8d & smaller
10d & 12d
16d
12d & smaller
16d

0.131
0.148
0.162
0.148
0.162

2.5
3.5
3.5
1.5
1.5

3
4
5
3
5

Notes:
1. Minimum fastener spacing values apply to a single row of nails driven into the edge of LVL.
2. Edge distance shall be sufficient to prevent splitting
3. Fastener sizes and closest on-center spacing not specifically described above are beyond the scope of this publication.
4. 	Tabulated closest on-center spacing for face orientation is applicable to nails that are installed in rows parallel to the grain (length) of the LVL. For nails installed in rows perpendicular
to the direction of grain (width/depth) of the LVL, the closest on-center spacing for face orientation shall be sufficient to prevent splitting of the LVL.

pacificwoodtech.com|

page 12PWT Treated LVL Requirements for

Installation & Maintenancesubstitutions for flashing on the joists and beams. Proper flashing is required
over ledger boards to meet code. Failure to use proper flashing, approved
flashing tape, and/or proper deck drainage systems will void the warranty.
Failure to apply flashing in accordance with the manufacturers’ written
installation instructions and as required by code will void the warranty.

1. Observation and installation:	Before and during construction inspect all components for damage or
improper installation.
	Except for sill plates, stair stringers, ledgers and columns, the LVL must be
used for permanent construction applications only, above ground, at least
8 inches above the ground and/or ground cover and/or ground vegetation
and/or splash zone, completely separated from concrete and other porous
materials by using a barrier material impermeable to water in accordancewith PWT's Installation Guide. Sill plates must be separated by a sill plategasket in proper installations to avoid direct contact with concrete andthe ground. Ledger must be separated from concrete by sill gasket or selfadhering butyl or rubberized-asphalt flashing. Columns and stair stringers
must be installed with a 1" standoff or uplift post base to avoid direct contact
with concrete and the ground.
2. Preventing trapped moisture:	
Fully enclosed exterior structures or assemblies must allow for moisture toescape through proper ventilation. DO NOT wrap exterior PWT Treated LVL
with materials that may trap moisture, such as wood, metal, or plastic trim,
without proper ventilation and drainage.
3.	Flashing in exterior applications, including, but not limited to,
deck substructures:	Flashing or approved flashing tape is required on any upward horizontal
surfaces of the PWT Treated LVL. Flashing tape must have passed design
standard AAMA 711-13, Level 3, Class A, perform in high and low temperature
extremes, and have minimum UV protection of 90 days of exposure. Deckdrainage systems that cover upward horizontal surfaces of PWT Treated
LVL joists and beams, preventing wetting from occurring, are acceptable

4.	Maintenance in exterior applications, including, but not limited to,
deck substructures:	
PWT Treated LVL must not be installed or come in contact with the groundin use in a structure. Regular efforts must be made to remove debris buildup
around wood members and metal connectors and fasteners. Mold fungi andmildew cause discoloration of the wood surface, commonly appearing as
a colored, fuzzy or powdery surface growth that can quickly spread oversurfaces with high moisture levels. Mold and mildew will not impact thestrength or stiffness of a wood member, but the presence of mold indicatesa high-moisture condition. Excessive moisture content for long periods cancause damage to any exterior-use wood product.
5. Proper connectors and fasteners:
	Appropriate connectors and fasteners must be used for the conditionsof-use to avoid failure due to corrosion or overloading. In all exterior
applications or any other conditions where excess moisture is present,
high-quality, exterior-grade, stainless steel or hot-dipped galvanized or
durable grade fasteners are required.
6. See Installation Guide for additional installation information.
7.	PWT Treated LVL that is used in a way that does not satisfy all theabove requirements is not covered by this limited warranty.

PWT Treated™ LVL
25-Year Limited Warranty
Subject to the terms and conditions of this limited warranty, Pacific Woodtech Corporation (“PWT”) warrants to the original purchaser or a permitted
transferee (the “Purchaser”) that, during the warranty period, and when used under normal use and service conditions in connection with
(1) above-ground, interior or exterior LVL applications for permanent use in structures (residential, multifamily, or commercial) in the United States ofAmerica or Canada, and/or (2) for the adequacy of design values as published by PWT, PWT Treated LVL framing components shall be free from material
defects in workmanship and materials and will not become structurally unfit for the intended applications due to damage caused by termites or
as a result of fungal rot, decay, or damage from wood destroying insects. The term of this limited warranty shall be twenty-five (25) years from the dateof original purchase for permanent use in or attached to a house or other building structure.
Please see pacificwoodtech.com for details about PWT Treated’s 25-year warranty.

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page 13

PWT Treated LVL

Frequently Asked Questions
1.	What is PWT Treated LVL and how does the treatment get into the wood?
Pacific Woodtech has teamed up with Kop-Coat to create the only commerciallyavailable fully treated LVL. Called “TRU-CORE® technology,” this process wasdeveloped to move treatment chemicals through wood; the migration process is
accelerated when energy, such as heat from an LVL press, is added.
2.	What is the difference between PWT Treated LVL and traditional
treatment processes? The difference is that traditional processes use VOCs
and/or incising to drive treatment into only the outer 0.4" perimeter of a wood
member, while the patented TRU-CORE® technology can drive treatment into
the entire member (no gradient) without adding regulated mineral solventsor water-based drivers, which can affect strength and/or void warranties inengineered wood products.
3.	So you are saying that your process treats the entire wood member
uniformly throughout its cross section without adding VOCs or mineralsolvents AND retains the full strength of the wood fiber? Yes.
4.	What Use Category would this be per the AWPA? PWT Treated LVL canbe used in exterior construction above-ground applications (UC3B) and forcomponents that are difficult to maintain, repair or replace and are critical to theperformance and safety of the entire system.
5.	What type of applications do you see for PWT Treated LVL? Any aboveground interior or exterior use such as deck beams, deck joists, deck columns(when on piers of 8" or greater in height, with a 1" offset). It is also a great
product for treated sill plates, when used with a foam gasket for separation fromthe concrete, which is required by code. PWT Treated LVL should not be used in“ground contact.”
6.	I thought that Douglas-fir LVL does not accept treatment well; is thattrue? Many western species, including Douglas-fir, are “refractory species,”
which means they have different anatomical properties, such as pore size andstructure, making traditional treating processes difficult. However, when you
look at the physiology of dry Douglas-fir, you will see that with some modern
technology, it can be treated quite easily. Kop-Coat’s TRU-CORE® technology
offers full penetration of Douglas-fir using modern preservatives. See ESR-3834
for additional details.
7.	Is the treatment still “moving” through the wood member after the LVL
is shipped? No, the treatment continues to normalize for about
24 hours after the LVL is pressed. After that time, the process has stabilized
within the product.
8.	Why hasn’t anybody done this before?
Kop-Coat developed the technology and applied for its first patent on thistechnology in 2004. To date, there are over 90 commercial wood treatment
penetration programs across the globe. Other companies have tried to develop
similar penetration technologies but have failed.
9.	Do the active treatment chemicals degrade over time? All organic molecules
degrade over time — regardless of treatment process. The ones selected for
TRU-CORE® technology retain their strength for 30 to 60 years in use — this isa significant improvement over traditional treatment processes where only theouter layer of wood fiber is treated.
10.	How can I tell PWT Treated LVL from untreated LVL? The LVL will also be
stamped/marked “PWT TREATED” and will have a muted olive-colored sealer
that is different than the standard Pacific Woodtech “honey brown” sealer on
untreated LVL.
11.	Does PWT Treated LVL have an odor? There are no solvents or VOCs in thetreatment, so the genuine smell of wood is retained.

12.	Can PWT Treated LVL be used indoors? Yes, the active chemicals used in thetreatment process are below EPA levels for indoor use.
13.	Do you have an SDS sheet for PWT Treated LVL? Yes, it is posted on
our website.
14.	Is there any risk when handling PWT Treated LVL? What precautions
should be taken? The risks associated with touching/handling PWT Treated
LVL are no worse than those of untreated LVL. Always wear proper PPE per
the safety data sheet:•	Handle in accordance with good industrial hygiene and safety practice.
•	Keep away from open flames, hot surfaces and sources of ignition.
•	Ensure adequate ventilation or use appropriate respiratory protection to
avoid wood dust inhalation.
•	Do not eat, drink or smoke when handling this product.
•	Remove and wash contaminated clothing before reuse.
15.	What would happen if someone were to ingest PWT Treated LVL? What
precautions should be taken after such exposure? The hazards are no worse
than those of untreated LVL. Per the SDS: Ingestion is not an expected route of
exposure. Rinse mouth. Immediate medical attention is not required.
16.	Do I have to re-treat cut ends, notches and holes? No, since PWT Treated
LVL is treated throughout the piece (no gradient), retreatment is not necessary.
However, it is recommended to recoat cuts with a sealer or paint to minimize
swelling, as moisture will wick into end-grain fibers more quickly than edges
and faces.
17. Can I stain or paint PWT Treated LVL? Yes, PWT Treated LVL can be stainedor painted.
18.	Do I need flashing? Proper flashing is required over ledger boards to meetcode. Refer to building code requirements for ledger boards. Flashing (metal orplastic) or approved flashing tape is required on any upward horizontal surfacesof the PWT Treated LVL to satisfy the warranty. Flashing tape must havepassed design standard AAMA 711-13, Level 3, Class A, perform in high- andlow-temperature extremes, and have minimum UV protection of 120 days of
exposure. Deck drainage systems that cover upward horizontal surfaces of PWTTreated LVL joists and beams, preventing wetting from occurring, are acceptable
substitutions for flashing on the joists and beams. Failure to use proper flashing,approved flashing tape and/or proper deck drainage systems will void thewarranty. Failure to apply flashing in accordance to the manufacturers’ written
installation instructions and as required by code will void the warranty.
19.	Can I put cladding over PWT Treated LVL beams and joists? Cladding isallowed if it will not trap moisture, as this will reduce the performance and life
expectancy of even treated wood products.
20.	How should I dispose of PWT Treated LVL? PWT Treated LVL can be disposedof in the same manner as untreated LVL.
21.	I have heard of ACQ (alkaline copper quaternary), copper azole (CA) andMCA (micronized copper azole) for pressure treated wood. What treatingchemicals are in PWT Treated LVL? ACQ, CA and MCA are chemicals used forpost-manufacture pressure treating of wood products. PWT Treated LVL uses
a PTI-based system. PTI stands for Propiconazole (fungicide), Tebuconazole(fungicide) and Imidacloprid (Insecticide). Our PWT Treated LVL has twice the PTI
retentions required for UC3B, with no gradient that you would see in pressuretreated lumber. PTI is very common. It has been around for over 20 years. ThesePTI protection systems are used for many types of wood products, including
decking, fencing, siding, windows, sheathing, flooring, framing and other woodand wood-based building materials.

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page 14

Software Tools
for PWT Treated LVL

The Most Powerful Software Tools in the Market
iStruct® software suite, featuring isPlan® and isDesign®
Pacific Woodtech Corporation provides customers with the best information services in theindustry—and supplies its customer base with software tools for performing daily engineeringand drawing functions required in today’s market.

isPlan® features:

Single-member sizing:• Draw and design floor, roof, and DECK framing plans with engineeredwood products• Beams, columns, and joists• Includes structural analysis and reporting, take-offs, quotes, and cutting
optimization with inventory integration• Concentrated loads— Hot tubs, planter boxes, etc.
• Improved system design•	Automatically develops loads and produces bold, color graphic layouts
in 2D and 3D

Deck framing layouts:• Specially engineered for companies with dedicated design staffs•	Complete materials list

• Supports the full Pacific Woodtech product line

• Design outputs for building officials•	Includes isDesign— the single-member beam design for custom orcomplex loading situations• 3D structure modelingpacificwoodtech.com|

page 15

The strength and uniformity of steel.
The workability of wood.
Featuring the world’s first manufacturer-treated LVL with protection
through every layer using innovative TRU-CORE® technology.
PWT Treated™ saves you time and materials because it’s straight, stable, and uniform-sized.
Plus, it’s stiffer and stronger with longer spans for better views—and it’s stainable!
Backed by a 25-year warranty, PWT Treated is quickly becoming the builder’s material of choice.
Find out how this premium, preferred framing system can be built
into your next project: sales@pacificwoodtech.com.

By

1850 Park Lane | Burlington, WA 98233
TF 888.707.2285 | O 360.707.2200 | F 360.395.7003

pacificwoodtech.com/treated

PW2028 21-1029