AWCI’s Member Products Catalog 2017 - Ce17

Overview | FAS Track HOW Products
DDA®-1 (Deflection Drift Angle®-1)

DDA-1 Fire Block
Up to 1" Overall Movement With No Fire
Spray Required Over Mineral Wool

SCALE 1 : 2

.625
SCALE 1 : 2

.625

.250

10' Lengths
Only

1.250
.313
.059
.250

Intumescent Tape

1.250

.313
.059

SCALE 2 : 1

Intumescent Tape

SCALE 1 : 2

SCALE 2 : 1
SCALE 1 : 2

DDA®
US Patent #8,595,999 B1 (Deflection Drift Angle®) is a composite steel
angle with intumescent tape factory applied to the inside leg of the
steel angle . The DDA is a fire-rated accessory that when combined with
slotted or deep leg track will offer 2" unencumbered movement at the
head-of-wall joint in accordance with UL-2079 " Test for Fire Resistance
of Building Joint Systems" . The 2-1/2" outside leg marked for proper
identification . The section is fabricated from minimum 0 .018-inch thick
hot-dipped red galvanized steel complying with ASTM A653 having
minimum G-40 coating .

Benefits
* The DDA provides a universal fit for any wall width, gauge, height,
radius, pitched, shaft wall or standard wall .
* Up to 1" movement with NO Fire Spray required over mineral
wool .
* Easy installation; DDA is tapped into place over the leg of the track,
the 3/4" leg is friction fit between the overhead structure and the
web of the header track .
* There is no need for mechanical fasteners as the DDA's friction fit
provides fire and smoke protection during both vertical and lateral
drift movement .
* The DDA comes in 10' lengths with 10 pieces per box, providing
up to 2" unencumbered movement with positive stud attachment .
DDA can be butt-joined or over-lapped .
* When fire spray is required for 2" movement, RectorSeal brand fire
sprays are required on ONLY ONE SIDE of the wall .
* Over 20 separate UL reports in accordance to UL2079 "Test for Fire
Resistance of Building Joints ."

* Maintains best possible LRating (smoke rating) and NO loss of STC
sound ratings at head-of-wall joint .
* Uses up to 75% less fire spray while the majority of the joint systems
requiring no fire spray at all .
* DDA and RectorSeal® brand fire spray offer an industry best
sustainable-life warranty .
* DDA and Rectorseal brand fire sprays and sealants are 100% made
in the USA .
* All Engineering Judgements utilizing fire spray or fire sealant are
provided by RectorSeal .

Sound Benefits
Whether the protection you need is Fire, Smoke, or Sound, DDA will
help you achieve your requirements . Sound tests were performed at
Western Electro-Acoustic Laboratory in Southern California to prove
that the DDA will maintain maximum STC ratings without secondary
acoustic sealant applications . In fact several sound tests were conducted both with a 1/2" to 3/4" open joint at the head-of-wall and
with a sealed head-of-wall joint on the same wall assembly . Both open
and closed joints rendered the exact same STC rating proving that no
sound transmission occurs through the open head of wall joint .
DDA will provide protection for the most extreme real life conditions and
allow your head-of-wall joint to freely move both lateral and vertically
without ever compromising the sound (STC) rating .

Technical Assistance
For technical questions and assistance please call 1 .800 .775 .2362 or
1 .800 .416 .2278, email dpilz@cemcosteel .com or visit our website at
www .cemcosteel .com .

Head of Wall Systems | www .cemcosteel .com | 800 .775 .2362

http://www.cemcosteel.com http://www.cemcosteel.com

Table of Contents for the Digital Edition of AWCI’s Member Products Catalog 2017