HomeMy WebLinkAboutCode Review Report 11.06.2018GA,1
GARNER ASSOCIATES, INC.
4181 County Road 311
New Castle, Colorado 81647
970.876.2210 Office
970.876.2209 Fax
970.379.8345 Cell
e-mail: garner_harry@msn.com
November 6„ 2018
RECEIVED
NOV 0 7 2018
GARFIELD COUNTY
COMMUNITY DEVELOPMENT
John Parrington
Tally Ho Construction
145 County Road 225
Rifle, Colorado 81650
Re: Code Review Report for Prefabricated Metal Buildings A and D for Rudd LLC, 0062 County Road
113, Carbondale
Mr. Parrington:
As you have requested, this report determines the fire wall requirements for the prefabricated metal
building as designed by Sentinel Building Systems proposed to be built as Building A and Building D
0062 County Road 113 in Garfield County, Colorado. The evaluation is based on the 2015
international Building Code (IBC) as adopted by Garfield County, Colorado and the 2009 International
Fire Code adopted by the Carbondale Fire District.
DESCRIPTION OF THE PROJECT
The proposed structures are prefabricated metal buildings designed by Sentinel Building Systems with
construction documents produced by Jeff Johnson Architectural PC dated September 9, 2018. The
structure is proposed to be approximately 125 feet x 75 feet (9,375 square feet). Single -fixture toilets
will be provided in each bay of the buildings. The exact location of the toilets will be field determined.
The proposed structure will be constructed of prefabricated steel frames with ribbed steel wall panels
over steel girls and steel roof panels over steel purlins. The toilets will be constructed with light gage
steel framing with gypsum board each side. Roof insulation will be R-38 batts and wall insulation will
be R-20 batts.
OCCUPANCY GROUP
The proposed buildings have been classified as an F1 Occupancy (warehousing) on the construction
documents.
CONSTRUCTION TYPE
The Construction Type has been determined to be Type II -B on the construction documents.
MAXIMUM ALLOWABLE BUILDING HEIGHT FOR CONSTRUCTION TYPE II -B (IBC Table 504.3)
55 feet
ACTUAL. BUILDING HEIGHT
14'-101/4' at the eaves, 18'-0" at the ridge
FIRE RESISTANCE REQUIREMENTS FOR BUILDING ELEMENTS TYPE II -B (IBC Table 601)
Zero for all elements
FIRE RESISTANCE RATING OF EXTERIOR WALLS BASED ON FIRE SEPARATION DISTANCE
(Table 602) (Fire Separation distance is distance to interior lot line or center of street)
Group F1
Less than 5 feet 2 -hour
5 feet to 10 feet 1 -hour
10 feet to 30 feet 0
Greater than 30 feet 0
The new building will have separation on all sides greater than 10' and, therefore, all exterior walls may
be non -rated construction.
AUTOMATIC SPRINKLER SYSTEM (IBC Section 903)
An automatic sprinkler system is required in the F-1 Occupancy exceeding 12,000 square feet
(IBC Section 903.2.4(1)) If the F1 Occupancy is for the manufacture of upholstered furniture or
mattresses (IBC Section 903.2.4(4)) or woodworking operations (IBC Section 903.2.4.1),
square footage exceeding 2500 square feet must provide a sprinkler system.
In addition, Garfield County has amended the 2009 IFC to require an automatic sprinkler
system in any building of Type IIB construction over 9000 square feet.(Amended IFC section
903.2, Table A). Therefore, a fire wall will be built centered under the structural frame at grid
line 4 to create two separate buildings under the provisions of IBC 706.1; one 5625 square feet
and the other 3750 square feet. IBC Table 706.4 requires the fire wall to be 3 -hour fire rated
construction built to be structurally stable under fire conditions to allow collapse of construction
on either side without collapse of the wall. The wall will be built tight to the underside of the
main structural bent and continue around each side of the structural bent to the underside of
the noncombustible roof sheathing and Class B roof covering (IBC 706.6, Exception 3). The
fire wall shall terminate horizontally at the interior face of the noncombustible wall sheathing
(IBC Section 706.5, Exception 2). There shall not be any wall openings within 4 feet to either
side of the fire wall. This may require the doors and or windows to either side of Rrid line 4 to
be relocated, The fire wall shall be built to the requirements of one of the 3 -hour fire wall types
listed below. Openings in the fire wall shall be protected and limited to a maximum of 156
square feet (IBC 706.8). Any doors in the fire wall shall have a 3 -hour fire door assembly
rating. There shall be no roof penetrations within 4 feet of either side of the fire wall. The fire
wall shall extend to the outer edge of horizontal projections except the fire wall may terminate
at the interior surface of the exterior wall where the roof overhang has no concealed spaces
and the exterior wall behind and below the overhang for the depth of the overhang is 1 -hour fire
rated construction. Openings is such walls shall have a fire rating of not less than 3/4 —hour
(IBC Section 706.5.2, Exception 1).
Penetrations through and joints in the fire wall shall be protected by a system tested and have
an F -rating of not Tess than 3 -hours.
DESIGNS FOR 3 -HOUR FIRE WALL
The National Gypsum Association Fire Resistance Design Manual, 2151 Edition, has several
proprietary 3 -hour fire rated wall assemblies that meet the requirements for the fire wall. In a
proprietary design all proprietary materials must be used as specified without substitution with
the exception of steel stud depth and gage. General Explanatory Note 18 allows greater stud
size (depth) and/or heavier gage of steel to be substituted for the steel stud specified in the
design. The stud spacing indicated is the maximum allowed. Any of the following systems can
be used for the 3 -hour rated fire wall:
GA File #WP 2751
GA File #WP 2800
GA File #WP 2921
GA File #WP 2922
GA File #WP 2924
GA File #WP 2925
GA File #WP 2930
See the attached Gypsum Board Partition descriptions.
Penetrations in the fire barrier shall be protected by an approved penetration firestop system
complying with IBC Section 713.3.12.
Horizontal joints at the underside of the roof deck and vertical joints at the connection between
the fire barrier and exterior wall panels shall be protected by an approved fire-resistant
joint system designed to resist the passage of fire for a time period equal to the fire
resistance rating of the wall. (IBC Section 715).
If you have any questions regarding this report please do not hesitate to contact me.
Respectfully,
1
Harry Garner, Registered Architect
President
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GA -600-2015 FIRE RESISTANCE DESIGN MANUAL
79
WALLS AND INTERIOR PARTITIONS, NONCOMBUSTIBLE
3 HOUR
FIRE
PROPRIETARY*
GYPSUM WALLBOARD, STEEL STUDS
Base layer 5/8' proprietary type X gypsum wallboard applied parallel or at righ-
angles to each side of 1-518", 18 mil (25 ga.), steel studs 24" o.c. with 1" Type
5 drywall screws 24' c.c. Second layer 5/8- proprietary type X gypsum,
wallboard applied parallel or at right angles to each side with 1-5/8" Type 5
drywall screws 24" o.c. Face layer 5/8' proprietary type X gypsum wallboard
applied parallel or at right angles to each side with 2-518' Type S drywall
screws 12° o.c.
Vertical Joints staggered 24" each layer and side. Horizontal joints need not be
staggered_
Sound tested using 2-1/2" steel studs with 2-1/2" glass fiber insulation friction fit in
stud space. (NLB)
PROPRIETARY GYPSUM BOARD
American Gypsum Company LLC. 5/8" FireBloc® Type X Gypsum Board
GA FILE NO. WP 2800
PROPRIETARY*
v.,
55 to 59 STC
SOUND
Thickness: 6-1/8"
Approx. Weight. 14 psf
Fire Test: UL R14196, 09CA11604
2-13-10,
UL Design V489, system F
Sound Test: RAL TL10-276, 8-17-10
GYPSUM WALLBOARD, STEEL STUDS
Base layer 1/2" proprietary type X gypsum wallboard or gypsum veneer base
applied parallel to each side of 1-5/8", 18 mil (25 ga.), steel studs 24" o.c. with
1° Type S drywall screws 24° o.c. Second layer 1/2" proprietary type X gypsum
wallboard or gypsum veneer base applied parallel to each side with 1-5/8'
Type S drywall screws 24" o.c. Face layer 1/2" proprietary type X gypsum
wallboard or gypsum veneer base applied parallel or at right angles to each
side with 2-1/4" Type S drywall screws 12" o.c. and 1-112° Type G drywall
screws midway between studs 1" above and below horizontal joints for right
angle application.
Joints staggered 24" each layer and side. Sound tested with 1-1/2" mineral fiber
insulation friction fit in stud space. (NLB)
PROPRIETARY GYPSUM BOARD
United States Gypsum Company... ..... ,1/2" SHEETROCK® Brand FIRECODE® C
Core Gypsum Panels
3 HOUR
FIRE
55 to 59 STC
SOUND
Thickness:
Approx. Weight:
Fire Test:
Field Sound Test:
4-5/8"
13 psf
UL R1319-138, 139,
5-27-82,
UL Design U435
SA -830112, 1-12-83
Njr
* Contact the manufacturer for more detailed information on proprietary products.
80
GA -600-2015 FIRE RESISTANCE DESIGN MANUAL
4LLS AND INTERIOR PARTITIONS, NONCOMBUSTIBLE
GA FILE NO. WP 2921
PROPRIETARY*
GYPSUM WALLBOARD, STEEL STUDS
Base layer 1/2" proprietary type X gypsum wallboard or gypsum veneer base applied
parallel to each side of 1-5/8", 18 mil (25 ga.), steel studs 24' o.c. with 1' Type 8 drywall
screws 12" o.c, Joints staggered 24" an opposite sides. Second layer 112" proprietary
type X gypsum wallboard or gypsum veneer base applied parallel to each side with 1-
5/8" Type S drywall screws 30" o.c. and 1-112' Type 0 drywall screws 12" o.c. spaced
1-1/2" from vertical joints. Vertical joints located 8" from studs and staggered 24" on
opposite sides. Face layer 1/2" proprietary type X gypsum wallboard or gypsum veneer
base applied at right angles to each side with 2-1/4' Type S drywall screws 12" o.c. and
1-1/2 Type G drywall screws midway between studs 1-1/2" above and below horizontal
joints. Joints offset 24" from second layer joints.
Sound tested with 1-1/2" glass fiber insulation friction fit in stud space. (NLB)
PROPRIETARY GYPSUM BOARD
National Gypsum Company ........1/2" Gold Bond® Brand FIRE -SHIELD C'"Gypsum Board
GA FILE NO. WP 2922
PROPRIETARY*
GYPSUM WALLBOARD, STEEL STUDS
Base layer 1/2" proprietary type X gypsum wallboard applied parallel to each side
of 1-5/8', 18 mil (25 ga.), steel studs 24" o.c. with 1' Type 8 drywall screws 38'
o c. Second layer 1/2' proprietary type X gypsum wallboard applied parallel or at
right angles to each side with 1-5/8" Type S drywall screws 24" o.c. Face layer
112" proprietary type X gypsum wallboard applied a; right angles to each side
with 2-1/4" Type S drywall screws 12" o.c. and 1-1/2' Type G drywall screws
midway between studs 1-1/2" above and below horizontal joints.
Joints staggered 24" each layer and side. Sound tested with 1-1/2" glass fiber
insulation friction fit in stud space. (NLB)
PROPRIETARY GYPSUM BOARD
American Gypsum Company LLC 1/2" FireBloc® Type C Gypsum Board
CertainTeed Gypsum Inc. 1/2" CertainTeed® Type C Gypsum Board
Continental Building Products 1/2" Firecheck® Type C
Georgia-Pacific Gypsum LLC 112" ToughRock® Fireguard C® Gypsum Board
PABCO Gypsum . 1/2' FLAME CURB® Super 'C' Type PG -C
3 HOUR
FIRE
50 to 54 STC
SOUND
Thickness: 4-5/8"
Approx. Weight: 14 psf
Fire Test: UL R3501, 92NK28896,
9-15-93,
UL Design U435;
WHI-694-0084, 3-16-83
Sound Test: NGC 2636, 7-21-83
3 HOUR
FIRE
50 to 54 STC
SOUND
Thickness: 4-5/8"
Approx. Weight: 13 psf
Fire Test: WHI-495-0804, 11-19-86;
UL R7094, 90NK10635,
10-24-90,
UL Design U435
Sound Test: WEAL 87-118, 1-22-87
Contact the manufacturer for more detailed information on proprietary products.
GA -600-2015 FIRE RESISTANCE DESIGN MANUAL
GA FILE NO. WP 2924
81
WALLS AND INTERIOR PARTITIONS, NONCOMBUSTIBLE
PROPRIETARY" i
GYPSUM WALLBOARD, STEEL STUDS
Base layer 1/2" proprietary type X gypsum wallboard or gypsum veneer base applied
parallel to each side of 1-5/8", 18 mil (25 ga.), steel studs 24" o.c. with 1" Type S drywall
screws 12" o.c. Second layer 1/2" proprietary type X gypsum wallboard or gypsum
veneer base applied parallel to each side with 1-518" Type S drywall screws 12" o.c.
Face layer 112" proprietary type X gypsum wallboard or gypsum veneer base applied at
right angles to each side with 2-1/4" Type 5 drywall screws 12" o.c. and 1-1R' Type G
drywall screws 24" o.c. midway between studs and 1.1f4° above and below horizontal
joints.
Joints staggered 24" each layer and side. Sound tested with 1-1/2" mineral fiber
insulation friction fit in stud space. (NLB)
PROPRIETARY GYPSUM BOARD
CertainTeed Gypsum Inc. 1/2" CertainTeed® Type C Gypsum Board
A FILE NO. WP 2925
PROPRIETARY*
GYPSUM WALLBOARD, STEEL STUDS
Base layer 5/8" proprietary type X gypsum wallboard or gypsum veneer base
applied parallel to each side of 1-5/8", 18 mil (25 ga.), steel studs 24" o.c. with 1"
Type S drywall screws 24" o.c. Second layer 5/8" proprietary type X gypsum
wallboard or gypsum veneer base applied parallel to each side with 1-5/8" Type
S drywall screws 24" o.c. Face layer 5/8" proprietary type X gypsum wallboard
or gypsum veneer base applied at right angles to each side with 2-5/8" Type S
drywall screws 12" o.c.
Joints staggered 24" on opposite sides and between layers. Screws offset 6"
between layers.
Sound tested with 1-1/2" glass fiber insulation friction fit in stud space. (NLB)
PROPRIETARY GYPSUM BOARD
National Gypsum Company......... 5/8" Gold Bond® Brand FIRE -SHIELD® Gypsum Board
3HOUR 50to54STC
FIRE SOUND
Thickness: 4-5/8"
Approx. Weight: 14 psf
Fire Test: ULC 85T381, 11-14-85,
ULC Design W418
Sound Test: NRCC 1073 -NV, 6-18-86
3 HOUR I 50 to 54 STC
FIRE l SOUND
Y'C'b .f
r
Thickness: 5-3/8"
Approx. Weight: 14 psf
Fire Test: UL R3501, 03NK32889,
10-30-03,
UL Design V438
Sound Test: NGC 2636, 7-21-83
* Contact the manufacturer for more detailed information on proprietary products.
82
GA -600-2015 FIRE RESISTANCE DESIGN MANUAL
WALLS AND INTERIOR PARTITIONS, NONCOMBUSTIBLE
10 GA FILE NO. WP 2930
PROPRIETARY*
GYPSUM WALLBOARD, STEEL STUDS
Base layer 3/4' proprietary type X gypsum wallboard applied parallel to each side of
1-5/8", 18 mil (25 ga.), steel studs 24" 0.0. with 1-1/4" Type S drywall screws 24"
o.c. Face layer 3/4° proprietary type X gypsum wallboard applied parallel or at
right angles to each side with 2-1/4" long Type S drywall screws 12" o.c. and 1-
1/2" Type G screws midway between studs along horizontal joints.
Joints staggered 24" each layer and side. (NLB)
PROPRIETARY GYPSUM BOARD
United States Gypsum Company 3/4" SHEETROCK® Brand ULTRACODE®
Core Gypsum Panels
3 HOUR
FIRE
Thickness: 4-5/8"
Approx. Weight: 11 psf
Fire Test: UL R1319-138-139,
81NK25510, 5-27-82;
UL R1319, 92NK18757,
8-17-92,
UL Design U435
ILE NO. WP 2931
PROPRIETARY*
3 HOUR
FIRE
GYPSUM WALLB s s, STRUCTURAL CEMENT PANELS, GLASS FIBER
ULATION, STEEL STUDS
Base layer 3/4' proprietary struchl cement panels applied at right angles to each
side of 3-1/2", 43 mil (18 ga.), stt tuds 16" o,c. with #8 by 1-5/8" self -drilling
wing screws 8" o.c. Face layer 5/8" p ^ 'etary type X gypsum wallboard applied
parallel or at right angles to each side wi , . by 2" Type S-12 drywall screws 8"
o.c. Face layer horizontal joints offset 2" $ base layer joints. Glass fiber
insulation, 3-1/2" thick, friction fit in stud space. ( ° • D -SEARING)
•
ALTERNATE INSTALLATION: Two layers of proprietary., tructural cement pane's
applied at the top of the wall with the base layer a minfr8 of 12" With and the
face layer a minimum of 10" wide. Remainder of the face lacer s,,5/8" proprietary
type X gypsum wallboard applied as described above. Glap: a insulation as
described above. (LOAD-BEARING)
•
Thickness: 6-114"
Approx. Weight: 10.5 psf
Fire Test: UL R25352, 07NK26195,
3-14-08: 11 N K12862,
G.y 10-12-11;
PROPRIETARY GYPSLIttel5ARD " , UL Design V471
United States Gypsum Company...... . ° SHEETROCK® Brand FIRECODE® �l
Core Gypsum Panels • �.
o,.
dookf'
* Contact the manufacturer for more detailed information on proprietary products.