Fontana Wholesale Lumber

D-Blaze® fire retardant treated wood is available for interior applications where fire retardant construction materials are specified by building codes. D-Blaze® treated lumber and plywood is highly effective in controlling the spread of flame, smoke and devastation caused by fire.

D-Blaze® treated products show no evidence of significant progressive combustion at 30 minutes exposure to flame. In most applications, D-Blaze® treated products offer a lower in-place cost than noncombustible classified materials.

Product features
Fire retardant
Durable
Low-corrosive
Low-hygroscopicity
Non-blooming
No VOC’s or Formaldehyde
Paintable
Stainable
Easy to handle
Workable with common wood working tools

D-Blaze® treated products are:

Approved by major building codes and insurance rating bureaus
Tested and certified by Underwriters Laboratories (UL)
Tested and certified by third party inspection agencies TP and SPIB
UL classified with an FRS rating for the species listed in Table 5 below,
exhibiting a flame spread and smoke developed index of 25 or less under
ASTM E-84 flame tunnel testing of a 30 minute duration.
Certified under ICC-ES ESR 2645 for the species listed in Table 6 with a
flame spread index of 25 or less when subjected to ASTM E-84 flame tunnel
testing of 30 minute duration without evidence of significant progressive
combustion.
ASTM D-3201 tested for hygroscopicity, resulting in D-Blaze®
classification as an interior Type A (HT) fire retardant defined in AWPA
Standards U1, UCFA.

Common applications

Roof trusses
Floor trusses
Roof decks and sheathing
Subflooring
Beams and purlins
Blocking and furring
Interior non-load bearing partitions
Studs
Paneling
Joists
Architectural millwork and trim
Exterior load-bearing walls

Strength

D-Blaze® FRT wood has been tested by independent laboratories following
industry standards ASTM 5516 & ASTM 5564 to develop strength reduction
factors for various use conditions, including roof temperatures of up to
150° F for lumber and 170° F for plywood. Consult Table 1 (D-Blaze® Lumber
Strength Design Factors) and Table 2, 3 and 4 (D-Blaze® Plywood Span
Rating Adjustments) for specific adjustment factors.

Approvals and Testing

D-Blaze® FRT wood meets or exceeds the guidelines for testing construction
materials as set forth and/or established by the:

CC-ES ESR 2645
City of Los Angeles RR 24502
New York City Building Code (MEA Numbers 406-87 and 407-87)
ASTM D5516
ASTM D5564
ASTM E-84
ASTM D-3201
Insurance Rating Bureaus
National Fire Protection Association (255)
CAN/ULC S102
CAN/ULC S102.2
National Building Code of Canada

Table 1
STRENGTH DESIGN ADJUSTMENT FACTORS
FOR D-BLAZE® FIRE RETARDANT LUMBER COMPARED TO UNTREATED LUMBER
Property SERVICE TEMPERATURE
< 100 ºF
(38 ºC) D-BLAZE® LUMBER
ROOF FRAMING,
CLIMATE ZONE1,2
1A 1B 2
Compression Parallel, Fc 0.935 0.935 0.935 0.935
Horizontal Shear 0.985 0.838 0.894 0.964
Tension Parallel 0.874 0.625 0.775 0.905
Bending:
Modulus of Elasticity, E 1.000 0.977 0.986 0.997
Bending:
Extreme Fiber Stress, Fb 0.972 0.740 0.828 0.939
Fasteners/Connectors 0.900 0.900 0.900 0.900

1Climate Zone definition:
     Zone 1 – Minimum design roof live load or maximum ground snow load
≤ 20 psf (960 Pa)
     Zone 1A – SouthWest Arizona, South East Nevada
                 (area bounded by Las Vegas- Yuma- Phoenix- Tucson)
     Zone 1B – All other qualifying areas of the United States
     Zone 2 – Maximum ground snow load ≥ 20 psf (960 Pa)

2Duration of load adjustments for snow loads, 7-day (construction) loads,
and wind loads as given in the National Design Specifications for Wood
Construction apply.

Notes for Tables 3 and 4:

SI Units Conversion: 1 inch = 25.4 mm, 1 psf = 48 N/m2

All loads are based on two-span condition with panels 24 inches wide or

wider, strength axis perpendicular to supports.

Fastener size and spacing must be as required in the applicable building

code for untreated plywood of the same thickness.

Roof spans and loads apply to roof systems having the minimum ventilation

areas required by the applicable building code. Fifty percent of required
vent area must be located on upper portion of sloped roofs to provide
natural air flow.

For low-sloped or flat roofs with membrane or built-up roofing having a

perm rating less than 0.2, use rigid insulation having a minimum R value
of 4.0 between sheathing and roofing, or use next thicker panel than
tabulated for the span and load (e.g., 19/32 for 24 inches, 23/32 for 32
inches); and use a continuous ceiling air barrier and vapor retarder with
a perm rating less than 0.2 on the bottom of the roof framing above the
ceiling finish.

For unblocked roof diaphragms panel edge clips are required for roof

sheathing: one midway between supports for 24-inch and 32-inch spans, two
at 1/3 points between supports for 48-inch span. Clips must be
specifically manufactured for the plywood thickness used.

Tabulated loads for Zone 1A are based on a duration of load adjustment

for 7-day (construction) loads of 1.25. Tabulated loads for Zone 1B and
Zone 2 are based on a duration of load adjustment for snow of 1.15. All
values within the table are based on a dead load (DL) of 8 psf. If the DL
is less than or greater than 8 psf, the tabulated live load may be
increased or decreased by the difference. Applicable material weights,
psf: asphalt shingles - 2.0, 1/2-inch plywood - 1.5, 5/8-inch plywood -
1.8, 3/4-inch plywood - 2.2.
7. Climate Zone definition:
     ZONE 1 – Minimum design roof live load or maximum ground snow load
≤ 20 psf (960 Pa)
     ZONE 1A – SouthWest Arizona, South East Nevada
                  (area Bounded by Las Vegas- Yuma- Phoenix- Tucson)
     ZONE 1B – All other qualifying areas of the United States
     ZONE 2 – Maximum ground snow load ≥ 20 psf (960 Pa)

Duration of load adjustments for snow loads, 7-day (construction) loads,

and wind loads as given in the National Design Specifications for Wood
Construction apply.

D-Blaze treated plywood must not be used as roof sheathing if a radiant

shield is used beneath the roof sheathing.

The 19/32-inch and 5/8-inch thickness are limited to performance rated

4-ply or 5-ply. 23/32- and 3/4-inch thicknesses are limited to performance
rated 5-ply or 7-ply.

Deflection of roof sheathing at tabulated maximum live load is less than

1/240 of the span, and under maximum live load plus dead load is less than
1/180 of the span.

Staples used to attach asphalt shingles must be minimum 15/16-inch crown

and minimum 1-inch leg, or otherwise comply with the applicable code, with
the quantity of fasteners adjusted in accordance with Table 1 of this
report.

Table 4
PLYWOOD
THICKNESS
(INCHES) Southern Pine Douglas Fir
Allowable Span
(Inches)1,2 Allowable Span
(Inches)1,2
3/8" (0.375) 12 12
15/32" (0.469) 16 16
1/2" (0.500) 16 16
19/32" (0.594) 19.2 19.2
5/8" (0.625) 19.2 19.2
23/32" (0.719) 24 24
3/4" (0.750) 24 24
7/8" (0.875) 24 24
1 (1.000) 32 32
1 1/8" (1.125) 32 32

SI Units Conversion: 1 inch = 25.4 mm, 1 psf = 48 N/m2

Uniform live load = 100 psf and Dead load = 10 psf, LL deflection ≤

L/360, LL+ DL deflection ≤L/240

Fastener size and spacing must be as required in the applicable building

code for untreated plywood of the same thickness.

Proper roof system ventilation shall be used to provide a uniform flow of
air over all interior surfaces of the plywood to prevent heat build-up and
sufficient to effectively remove moisture where the roof is warmed by
solar radiation.

D-Blaze Lumber and Plywood Approved Species
Table 5
Species awarded Underwriters Laboratories Inc "FRS" classification when
treated with D-Blaze® fire retardant treatment chemicals:

Softwood Lumber
*Jack Pine
*Lodgepole Pine
*Ponderosa Pine
*Southern Pine *Red Pine
*Alpine Fir
*Balsam Fir
*Douglas Fir *Hem-Fir
*Spruce-Pine-Fir (SPF)
*White Fir
*Western Hemlock *Black Spruce
*Englemann Spruce
*Red Spruce
*White Spruce

Plywood Hardwood Lumber
*Douglas Fir
*Lauan *Basswood
*Red Oak

Table 6
ICC-ES ESR 2645 Approved Species

Plywood Hardwood Lumber
*Douglas Fir
*Lauan

*Southern Pine

*Red Pine
*Basswood
*Red Oak

NOTE: From time to time, additional species will be tested. Check with
your supplier if the species desired are not shown.

How to specify D-Blaze® FRT lumber and plywood
To assure structural integrity in roof areas of high temperature and
humidity, D-Blaze® span and strength design adjustment factors have been
determined by independent third parties in accordance with ASTM D5516 for
plywood and ASTM D-5664 for lumber. Extended specifications can be found
in "Sweet's Catalog," "Sweet's Directory," "Architects First Source,"
"Spec Data." "ARCAT," "ManuSpec®" and "The Blue Book."

All D-Blaze® FRT lumber and plywood:
•shall be pressure-treated with D-Blaze® fire retardant to meet
Underwriters Laboratories FRS rating or a flame spread and smoke index
rating denoting a surface-burning characteristic rating of 25 or less for
flame spread and smoke developed.
•shall bear the Underwriters Laboratories label or stamp attesting to the
FRS rating or flame spread and smoke index rating, or the ESR 2645
Building Code Approval, and to the fact that it also meets the American
Wood Protection Association, (AWPA):P50, U1, UCFA for interior Type A (HT)
use.
•shall be kiln-dried to a maximum moisture content of 19% for lumber and
15% for plywood or less.* The fire retardant chemicals used shall be
halogen and sulfate free.
•shall be kept dry at all times during transit, job site storage and
erection. If material does become wet, it shall be replaced or permitted
to dry (maximum 19% MC for lumber and 15% MC for plywood) prior to
covering or enclosure by wallboard or other construction materials.
All structural design calculations shall be based on the D-Blaze® Strength
Design Factor Tables.

*Note: Designer may wish to specify lower moisture content for cabinet and
millwork.

Fire Retardant Wood
D-Blaze® fire retardant treated wood is available for interior
applications where fire retardant construction materials are specified.

D-Blaze® treated lumber and plywood is highly effective in controlling the
spread of flame, smoke and devastation caused by fire. In most
applications, D-Blaze® treated products offer a lower in-place cost than
noncombustible classified building materials.

Safety & Handling
D-Blaze® pressure-treated products do not contain any EPA-listed hazardous
chemicals and are easy to work with, requiring no special precautions
other than routine wood working safety procedures. When working with or
machining D-Blaze® pressure-treated wood, the following safety precautions
should be followed:

•Wear gloves to protect against splinters
•Wear a dust mask when machining any wood to reduce the inhalation of wood
dusts
•Wear appropriate eye protection to reduce the potential for eye injury
from wood particles and flying debris during machining
•Wash thoroughly with mild soap and water after working with treated wood
•Wood scraps can be disposed of by ordinary trash collection.
•Do not burn

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Table 1

Strength design factors of D-BLAZE Fire Retardant Treated Lumber as compared to untreated lumber:

Strength Design Factors	Applicable At Up To:
	80°F				150°F
	Southern Pine**	Douglas Fir**	Spruce**	Other Species*	Southern Pine	Other Species*
Compression Parallel, Fc	0.93	0.91	0.94	0.91	0.85	0.85
Horizontal Shear	1.00	0.97	1.00	0.97	0.86	0.86
Tension Parallel	0.77	0.91	0.96	0.77	0.65	0.65

Bending: Modulus of Elasticity, E	0.88	0.96	0.97	0.88	0.89	0.89
Extreme Fiber Stress, Fb	0.85	0.87	0.90	0.85	0.79	0.79

* Species awarded "FRS" classification by Underwriters Laboratories, Inc. when treated with D-BLAZE FRT chemicals are found in Figure 1. NOTE: Strength Design Factor of untreated lumber is 1.0.

** These design value adjustments were determined during a testing program conducted at the Mississippi State University Forest Products Utilization Laboratory. Tests were conducted in accordance with the National Forest Products Association policy on design values for fire retardant retardant treated lumber protocol.

The test materials were treated before testing in accordance with the Underwriters Laboratories, Inc. procedures for D-BLAZE FRT wood. The treated materials were kiln-dried after treatment per AWPA Standard C-20-84.

The design value factors are to be applied to those shown for untreated wood in the National Design Specification of Wood Construction published by the National Forest Products Association and apply only to lumber bearing an ALS approved grade mark. Use the design values for surfaced dry material at 19% moisture content.

Placement of insulation and airflow should be designed to maintain acceptable wood temperatures.

Good ventilation is essential in fire retardant wood construction to minimize excessive relative humidity and condensation. At relative humidity conditions when FRTW moisture content levels are expected to exceed 19%, appropriate design value adjustments for high moisture content should be made.

Span Rating Adjustments

D-Blaze interior FRT plywood has been tested and shown to meet the following plywood roof sheathing and subfloor spans when used with span rated plywood and/or plywood bearing the trademark of an approved inspection agency.

Table 2

A comparison, by panel thickness and at temperatures up to 170° F, of span ratings for D-BLAZE® Plywood, Sturd-I-Floor, and sheating with similar APA ratings:

APA Rating	Panel Thickness*	D-BLAZE Rating
12/0	5/16"	*12/0
16/0	5/16" 3/8"	*16/0
20/0	5/16" 3/8"	*20/0
24/0	7/16" 1/2"	*24/0
24/16	7/16" 1/2"	24/16
32/16	15/32" 1/2"	24/16
32/16	5/8"	32/16
40/20	5/8" 19/3"	32/20
40/20	3/4" 7/8"	40/20
48/24	23/32" 3/4"	40/24
48/24	7/8"	48/24

* The 5/16" or 3/8" plywood panel thicknesses are not permitted for roof applications. NOTE: Plywood shall be manufactured in accordance with PS 1-83 Specification, Group 1 species, stress level 2, with exterior gluelines and used in dry service conditions. Allowable uniformly distributed load for floors is 50 PSF live load and 5 PSF dead load or a 200 pound concentrated load. Roof loads are 30 PSF live load and 8.5 PSF dead load or a 200 pound concentrated load. Deflection based on 1/180 of the span.

Proper roof system ventilation shall be used to provide a uniform flow of air over all interior surfaces of the plywood to prevent heat build-up and sufficient to effectively remove moisture where the roof is warmed by solar radiation.

Species awarded Underwriters Laboratories Inc "FRS" classification when treated with D-Blaze fire retardant treatment chemicals:

Softwood Lumber
Jack Pine Lodgepole Pine Ponderosa Pine Southern Yellow Pine	Red Pine Alpine Fir Balsam Fir Douglas Fir	Hem-Fir Spruce-Pine-Fir (SPF) White Fir Western Hemlockr	Black Spruce Englemann Spruce Red Spruce White Spruce

Plywood Hardwood Lumber		Hardwood Lumber
Douglas Fir Lauan	Red Pine Southern Yellow Pine	Basswood Red Oak

NOTE: From time to time, additional species will be tested. Check with your supplier if the species desired are not shown.

How to specify D-Blaze FRT lumber and plywood

To assure structural integrity in roof areas of high temperature and humidity, D-Blaze span and strength design adjustment factors have been determined by independent third parties in accordance with ASTM D5516 for plywood and ASTM D-5664 for lumber. Extended specifications can be found in "Sweet's Catalog," "Sweet's Directory," "Architects First Source," "Spec Data." "ARCAT," "ManuSpec®" and "The Blue Book."

All D-Blaze FRT lumber and plywood:

shall be pressure-treated with D-Blaze fire retardant to meet Underwriters Laboratories FRS rating denoting a surface-burning characteristic rating of 25 or less for flame spread and smoke developed in a test of 30-minute duration.
shall bear the Underwriters Laboratories label or stamp attesting to the FRS rating and to the fact that it also meets the AWPA Standard C20 and C27 for Type A use and Standard DB-90.
shall be kiln-dried to a maximum moisture content of 19% for lumber and 15% for plywood or less.* The fire retardant chemicals used shall be halogen and sulfate free.
shall be kept dry at all times during transit, job site storage and erection. If material does become wet, it shall be replaced or permitted to dry (maximum 19% MC for lumber and 15% MC for plywood) prior to covering or enclosure by wallboard or other construction materials.

All structural design calculations shall be based on the D-Blaze Strength Design Factor Tables.

*Note: Designer may wish to specify lower moisture content for cabinet and millwork.

Table 3

SPAN RATINGS FOR D-BLAZE® FIRE RETARDANT SOUTHERN PINE PLYWOOD FOR ROOF SHEATHING APPLICABLE AT A TEMPERATURE UP TO 170º F (77ºC) BASED ON UNIFORM LOADING, TWO SPAN CONSTRUCTION AND L/180 DEFLECTION LIMIT
PLYWOOD THICKNESS (INCHES)	D-BLAZE^{® 1,2,3,4,5,8,9,10,11,12} PLYWOOD ROOF SHEATHING SPAN RATINGS USED AT TEMPERATURES > 100° F AND <170° F
	CLIMATE ZONE^6,7
	1A	1B	2
³/₈" (0.375)	20	20	20
¹⁵/₃₂" (0.469)	24	24	24
¹/₂" (0.500)	24	24	24
¹⁹/₃₂" (0.594)	32	32	32
⁵/₈" (0.625)	32	32	32
²³/₃₂" (0.719)	40	32	40
³/₄" (0.750)	40	32	40
⁷/₈" (0.875)	40	40	48
1 (1.000)	48	48	48
1 ¹/₈" (1.125)	48	48	48

Table 4

SPAN RATINGS FOR D-BLAZE® FIRE RETARDANT DOUGLAS FIR AND OTHER SPECIES PLYWOOD FOR ROOF SHEATHING APPLICABLE AT A TEMPERATURE UP TO 170º F (77ºC) BASED ON UNIFORM LOADING, TWO SPAN CONSTRUCTION AND L/180 DEFLECTION LIMIT
PLYWOOD THICKNESS (INCHES)	D-BLAZE^{® 1,2,3,4,5,8,9,10,11,12} PLYWOOD ROOF SHEATHING SPAN RATINGS USED AT TEMPERATURES > 100° F AND <170° F
	CLIMATE ZONE^6,7
	1A	1B	2
³/₈" (0.375)	16	16	20
¹⁵/₃₂" (0.469)	20	20	24
¹/₂" (0.500)	20	20	24
¹⁹/₃₂" (0.594)	24	24	32
⁵/₈" (0.625)	24	24	32
²³/₃₂" (0.719)	32	32	32
³/₄" (0.750)	32	32	32
⁷/₈" (0.875)	40	32	40
1 (1.000)	40	40	48
1 ¹/₈" (1.125)	48	40	48