Relatively clean cuts can be obtained with a small amount of care.

Avoid forcing bit through I-joist too quickly.

Fire Membrane Joist (AJS® 24 FMJ) One-Step Fire Solution

FEATURES BENEFITS

CONSTRUCTION-FRIENDLY

• No specific top and bottom orientation to help assure correct framing every time. • Web holes may be cut the same as with non-protected joists. • Non-corrosive to fasteners. • Has met stringent durability standards required by the building code. • 2x4 flange means longer, stronger spans; wider nailing surface.

ARRIVES AT THE JOBSITE READY TO INSTALL AJS® 24 FMJ is ready to be installed when delivered.

MET ICC-ES® ACCEPTANCE CRITERIAMet ICC-ES® acceptance criteria for fire protection of residential floors. Code approved thru ICC-ES® ESR 1144. AJS® 24 FMJ has passed the E119 fire test as required to establish equivalency to dimension lumber joists.

LIGHTER THAN DIMENSION LUMBER AJS® 24 FMJ is lighter than the equivalent 2x10 or 2x12.

IN STOCK AT LUMBERYARDS Contact your dealer for pricing and other product details.

®

BOISE CASCADE FIRE JOIST SOLUTIONS FOR BASEMENTS

AJS® 24 FMJ Design Properties End Reaction [lbs] Intermediate Reaction [lbs]

Joist Series

Joist Depth

[inches]Weight

[plf]Moment [ft-lbs]

El x 106 [lb-in2]

K x 106 [lbs]

Shear [lbs]

1½" Bearing 3½" Bearing 3½" Bearing 5¼" Bearing

No WS(1) WS(2) No WS(1) WS(2) No WS(1) WS(2) No WS(1) WS(2)

AJS® 24

9½" 3.4 4005 270 5.3 1160 950 1240 1175 1480 2600 2850 2600 2850

11⅞" 3.7 5190 457 6.7 1490 955 1335 1215 1595 2690 3190 2690 3190

14" 4.0 6250 670 7.9 1790 960 1420 1250 1700 2770 3500 2770 3500

16" 4.3 7245 911 9.1 2065 970 1500 1285 1800 2850 3800 2850 3800Notes: (1) No web stiffeners required. (2) Web stiffeners required.

AJS® 24 FMJ Residential Floor Span Table (40/10 psf Loading)

Joist Depth

THREE STAR L/480 FOUR STAR L/960+ CAUTION MINIMUM STIFFNESSALLOWED BY CODE L/360

12" o.c. 16" o.c. 19.2"o.c. 24" o.c. 12"o.c. 16"o.c. 19.2"o.c. 24"o.c. 12"o.c. 16"o.c. 19.2"o.c. 24"o.c.

9½" 19'–11" 18'–2" 17'–2" 15'–11" 15'–6" 14'–1" 13'–3" 12'–4" 22'–0" 20'–1" 19'–0" 17'–5"

11⅞" 23'–8" 21'–7" 20'–4" 18'–3" 18'–6" 16'–10" 15'–10" 14'–8" 26'–2" 23'–11" 22'–2" 18'–3"

14" 26'–10" 24'–6" 22'–11" 18'–4" 21'–0" 19'–1" 18'–0" 16'–8" 29'–8" 26'–9" 22'–11" 18'–4"

16" 29'–9" 27'–2" 23'–2" 18'–6" 23'–3" 21'–2" 19'–11" 18'–6" 32'–11" 27'–10" 23'–2" 18'–6"AJS 24 FMJ plus options 11/27/2017

AND OTHER BOISE CASCADE OPTIONS:Drywall the ceiling with gypsum to BCI® or AJS® Joists

GYPSUM DRYWALL CEILINGS nailed to AJS® or BCI® joists provide about 3x longer fire resistance than 2x10" dimension lumber joists not covered by gypsum.

Installation of Mineral Wool Insulation Between BCI® or AJS® Joists

MINERAL WOOL INSULATION has been in use for decades and installs easily by quickly dropping batts into place between AJS® or BCI® 5000 and larger series, no stapling or nailing.

© 2017 Boise Cascade Wood Products, L.L.C. BOISE CASCADE, the TREE-IN-A CIRCLE symbol, BCI, AJS, and “Great products are only the beginning.” are trademarks of Boise Cascade Company or its affiliates.

Drop drywall in to BCI® or AJS® Joists with no nailing or screwing

DROP-IN-DRYWALL FIRE PROTECTION with easy access to plumbing, heating and electrical. Uses ½" or ⅝" gypsum — quick and easy to install with no nailing or screwing.

www.BC.com/ewp

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63B Bedford StLakeville, MA 02347(800) 752-0121®

BCI® or AJS® Joists with partial sprinkler systems (part of the residential cold water system)

PARTIAL SPRINKLER SYSTEM installed with AJS® or BCI® joists is part of a residential cold water system protecting certain zones of the home.