ICC-ES Legacy Report
ER-2100
Issued April 1984
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www.icc-es.org | (800) 423-6587 | (562) 699-0543
A Subsidiary of the International Code Council ®
Legacy report on the 1982 Uniform Building Code™
DIVISION: 09—FINISHES
Section: 09260—Gypsum Board Assemblies
ULTRAWALL PARTITION SYSTEMS AND SMR
DELTA/GAMMA AND SDF-370 20-MINUTE FIRE DOOR
FRAMES AND SIDE-LIGHT ASSEMBLY
UNITED STATES GYPSUM COMPANY, DEPT 133
101 SOUTH WACKER DRIVE
CHICAGO, ILLINOIS 60606
1.0
SUBJECT
®
ULTRAWALL Partition Systems and SMR Delta/Gamma
and SDF-370 20-Minute Fire Door Frames and Side-light
Assembly.
2.0
DESCRIPTION
The studs are cut 3 to 6 inches shorter than the wall
panel. The “H” stud is inserted into the kerfs in the edges
of both wall panels. The entire wall is then built
progressively, both sides at the same time. The “T” stud is
inserted into the kerf of one panel only so that one face of
the wall can be progressively constructed independent of
the second face. The edge of the wall panel in the opposite
face is offset with respect to the first panel so it can be
erected later in a similar sequence. The return flange of the
“T” stud is located against the back of the opposite panel
and requires no additional attachment.
Sectional properties of the ULTRAWALL components are
shown in tables accompanying this report.
2.1 One-hour Fire-resistive Nonbearing Partition:
The Ultrawall Partition System is a nonbearing
noncombustible wall construction, utilizing steel studs
3
faced on each side with one layer of /4-inch-thick Ultrawall,
Type X gypsum wallboard panels, plain or with Textone
vinyl, 24 inches to 30 inches in width.
For erection at ceiling and terminals, either a one-piece
1
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extruded aluminum flanged runner cap (1 /4 inches × 3 /8
inches) or a one-piece 23 gauge steel flanged runner cap
may be used to receive the face panels; or a 24 or 20
gauge steel C-shaped runner track (17/8 inches × 1 inch)
may be used to anchor the face panels (with screws — see
below). Any of these three top or terminal assemblies are
attached to the supporting perimeter framework with nails,
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screws or other approved fasteners. A /4-inch-thick wall
panel is placed at one end of the abutting wall either
against each side of the track, or into each flange of the
end runner cap members.
The wall panels are inserted into the flanges of the onepiece aluminum top runner cap or the one-piece steel top
runner cap, or are secured to the C-shaped top runner
track with two 1-inch-long Type S screws, one applied near
each corner of each panel. The exposed screws are
covered with a 11/4-inch-wide strip of aluminum trim
attached with an adhesive, drive-in connectors or screws.
The base attachment consists of one 1-inch-long Type S
screw at the center of each panel. The base may be
finished with a vinyl or rubber top set adhesively-applied or
an aluminum snap-on base.
1.
3
2.
H Stud
3.
T Stud
/4-inch ULTRAWALL Gypsum Panel.
The uncoated minimum steel thickness of the coldformed product as delivered to the job site shall not at any
location be less than 95 percent of the thickness, t, used in
the design. However, the thickness may be less at bends,
such as corners, due to cold-forming effects.
2.2 Two-hour Fire-resistive Nonbearing Partition: The
two-hour Ultrawall Partition System is similar to the
previously described one-hour system except that an
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additional layer of /4-inch Ultrawall Panel is attached on Z
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Splines to one side and the stud cavity contains a 1 /2-inch
THERMAFIBER S.A.B.
1.
3
2.
H Stud.
3.
11/2-inch THERMAFIBER Sound Attenuation Blanket.
4.
SBS 153 Clips at 24 inches on center.
/4-inch Ultrawall Gypsum Panel.
ICC-ES Evaluation Reports are not to be construed as representing aesthetics or any other attributes not specifically addressed, nor are they to be construed
as an endorsement of the subject of the report or a recommendation for its use. There is no warranty by ICC Evaluation Service, LLC, express or implied, as
to any finding or other matter in this report, or as to any product covered by the report.
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Page 1 of 4
ER-2100 | Most Widely Accepted and Trusted
5.
3
6.
3
7.
STL 361 Strut Runners.
/4-inch Z Spline 24 inches on center.
/8-inch by 2-inch gypsum board filler strips at
perimeter.
Erection: The floor, ceiling and end wall runners are
attached as noted in A above. The additional layer of 3/43
inch gypsum panel is attached on /4-inch Z Splines
installed vertically on 24-inch centers. The Z Splines are
attached with clips spaced vertically 24 inches on center
secured to the studs with 1-inch
Page 2 of 4
1
/2-inch machine screws on the jamb. Frames over 7 feet 6
inches in height require four full-mortise template steel
hinges.
The door frame header may be an extruded aluminum
member a minimum of 0.080 inch thick that snaps into the
ULTRAWALL ARL 300 flanged rail or it may be a milled
butt or mitered section of the same shape as the jamb
members.
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Type S screws, a maximum of 5 inches from the top and
bottom of the wall. The periphery of the wall is treated with
gypsum board strips, 3/8 inches thick by 2 inches wide,
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secured with 1 /8-inch Type S screws 24 inches on center.
The extra gypsum panel is secured with 23/8-inch Type S
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screws through No. 12 gauge 1 /4-inch-wide metal trim on
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top and sides. Spacing of 2 /8-inch screws is 12 inches on
center along sides and 11 inches on center top and
bottom. Screws are 1-inch from panel joints.
2.3 Noncombustible Nonbearing Partition:
The Nonrated Ultrawall Noncombustible Partition is
identical to the one-hour partition except no screws are
required in the top or bottom of the panel. Installation is
also the same. THERMAFIBER Sound Attenuation Batts
may be installed in the cavity of the partition.
The side-light assembly consists of AGL340 glazing rail
attached to the wall edge with Durabond joint compound
(all-purpose, taping or Type 90) at quarter points and a
1
minimum /4-inch-thick approved wired glass inserted into
the frame opening resting on 3/8-inch-square by 21/2-inchlong neoprene pads located approximately 6 inches on
center. AGL341 glazing rail cover is snapped into the side3
light jamb of the door frame. Four /16-inch-diameter steel
bolts spaced equally along the height of the door frame are
installed to provide added rigidity. (See Figure No. 1.)
The double side light shall be constructed in the same
manner as the single light in the preceding paragraph, with
the following exception:
a.
Both the hinge and strike jambs shall be as per
Section C in Figure No. 1
b.
A section of STL 361 (20 or 24 gauge) must be
installed vertically under the center of each side light
for additional support.
2.5 ULTRAWALL SDF-370 20-Minute Door Frame:
2.5.1 General: The SDF-370 door frame, reversible and
flush mortising, consists of two 22 gauge electrogavanized
jambs, .062-inch snapover vinyl jamb covers and a .062
vinyl snap-in header.
Alternate Nonrated Nonbearing Accessible Security
System. H-R studs may be installed exactly as the “H”
studs described in paragraph A. They can be used for a
single panel, a series or an entire installation. Opposite
panels cannot be removed but alternate opposite panels
are easily removable and replaceable. All other
components remain the same except for the stud.
Sectional properties of the ULTRAWALL components are
shown in tables accompanying this report.
2.4 ULTRAWALL Rated SMR 20-Minute Door Frame
(Delta/Gamma) and Side-light Assembly:
2.4.1 General: The assembly consists of aluminum frame
sections, snap-on closure members, strike plate and
components for a rated side-light assembly. The frame is
manufactured from 6063-T5 aluminum having a minimum
thickness of 0.080 inch excluding trim members.
The frame is designed for use in conjunction with tightfitting smoke- or draft-stop doors described in Section 3304
(h) of the code. The door size shall not exceed 48 by 120
inches and the side light shall not exceed 24 inches by 120
inches.
Where a double side-light assembly is desired, the
maximum door size shall be 36 inches by 130 inches and
each side light shall not exceed 24 inches by 120 inches.
2.4.2 Installation: The frame is designed for use in steel
stud partitions, 33/8 inches thick. The frame is provided with
vinyl gasketing complying with Section 43.209 (c) 4 of UBC
Standard No. 43-2 field installed on the jambs and the
header. Frames up to 7 feet 6 inches in height require
three 41/2 by 41/2- by 0.130-inch full-mortise template steel
hinges per door. Each hinge is installed using four No. 12,
11/4-inch-long wood screws on the door and four No. 10 by
The frame is designed for use with the ULTRAWALL
partition system in conjunction with tight-fitting smoke or
draft-stop doors described in Section 3305 (h) of the code.
The door opening shall not exceed 48 inches by 120
inches. The assembly is designed for use with full-height
partition height door openings.
The ULTRAWALL partition is erected with rough door
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opening /4 to 1 inch greater than door width, with STL 361
strut runners framing the vertical sides of opening, as
shown in Figure No. 2. The 3/4-inch gypsum panels are
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attached to the strut runner with 1 /4-inch USG Type S
drywall screws 24 inches on center on each side of the
ULTRAWALL partition. The SDF 370 door jambs are
installed on each side of vertical opening with 11/4-inch
Type S drywall screws through predrilled holes into the
gypsum panel and the strut on 18-inch centers. The STL
362 ceiling runner above the door opening is packed with
USG THERMAFIBER mineral fiber insulation, and the vinyl
snap-in header is installed. The rigid-vinyl snap-on jamb
covers are snapped over the vertical sections. The hinges
are installed, latch cutouts made and door installed. Vinylfilled pieces are adhesively installed to complete the
installation.
2.5.2 Identification: Plain ULTRAWALL partition panels
are identified by a stamp containing an 8- to 10-digit Arabic
numeral code designating the plant, date and production
shift, etc. The vinyl-faced ULTRAWALL panels are bundled
two pieces to a bundle with an identification label
containing the information shown above.
The fire door frames are identified by a label containing
the manufacturer’s name, address, ICBO report number,
type of wall assembly suitable for the fire-resistive rating
and the name of the inspection agency.
ER-2100 | Most Widely Accepted and Trusted
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The SDF-370 20-minute Fire Door Frames are identified
in a similar manner, with the exception that the labels carry
the Warnock Hersey International Inc. (NRB-219) name.
3.0
EVIDENCE SUBMITTED
Report of fire tests conducted in accordance with U.B.C.
Standards Nos. 43-1 and 43-2, results of load tests,
engineering analysis quality control manuals and
brochures are submitted.
4.0
FINDINGS
4.2 That the SMR 20-minute fire Door Frame
(Delta/Gamma type) and Side-light Assembly are
recognized for use in steel stud walls in
conjunction with tight-fitting smoke or draft-stop
doors as described in Section 3305 (h) of the 1982
code.
4.3 That the SDF-370 20-minute fire door frame
complies with Section 3305 (h) of the 1982
Uniform Building Code for installation in steel
stud walls.
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4.1 That the ULTRAWALL® Partition systems comply
with the 1982 Uniform Building Code for nonloadbearing interior partitions, provided construction
complies with this report and the manufacturer’s
instructions.
This report is subject to re-examination in one year.
TABLE 1—ULTRAWALL ELECTRO-GALVANIZED STUD PROPERTIES
STUD SHAPE
H
T
H-R
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METAL THICKNESS
1
0.027
0.027
A
WIDTH
(inches)
2.625
2.155
B
FLANGE
(inches)
0.688
0.688
C
FLANGE
(inches)
—
0.220
0.027
2.625
0.688
0.329
The uncoated minimum steel thickness of the cold-formed product as delivered to the job site shall not at any location be less than 95 percent
of the thickness, t, used in the design. However, the thickness may be less at bends, such as corners, due to cold-forming effects.
TABLE 2—MAXIMUM ULTRAWALL PARTITION HEIGHTS
STUD SPACING
24"
30"
H
13'-4"
12'-6"
STUD CONFIGURATION
T
H-R
12'-6"
11'-7"
11'-6"
10'-9"
T & C COMBINATION
12'-6"
11'-6"
ER-2100 | Most Widely Accepted and Trusted
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Installation of Delta frame and side-light in steel stud walls.
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NOTE: The frame is attached to the steel studs with 1 /4-inch-long USC screws spaced 2 inches from the top and bottom and 8 inches on
center in between. Double 20 gauge runners are used at Detail F when side-light is installed with SMR door frame.
FIGURE 1—SMR FRAMES
FIGURE 2—SDF-370 FRAMES