Division 7 - Thermal and Moisture Protection
Division 7 - Thermal and Moisture Protection
7.01 Firestopping
PART A - GENERAL
1.1 One Sub-contractor shall be responsible for the furnishing and
installation of all building firestopping. This includes, but
is not limited to, the following:
A. Through-penetration firestopping in fire-rated
construction.
B. Construction-gap firestopping at connections of the same
or different materials in fire rated construction.
C. Construction-gap firestopping occurring within fire rated
wall, floor or floor-ceiling assemblies.
D. Construction-gap firestopping occurring at the top of
fire rated walls.
E. Through-penetration smoke-stopping in smoke partitions.
F. Construction-gap smoke-stopping in smoke partitions.
1.2 The latest editions to the following publications shall apply
as a minimum but not be all inclusive to the design and
installation of firestopping.
A. Underwriters Laboratories (UL)
1. UL Fire Resistance Directory (ULFRD)
2. Surface Burning Characteristics of Building
Materials (UL 723)
3. Fire Tests of Through-Penetration Firestops (UL
1479).
B. American Society For Testing And Materials Standards:
ASTM E-814: Standard Test Method For Fire Tests of
Through-Penetration Firestops.
C. Factory Mutual Engineering and Research Corporation (FM),
Approval Guide.
D. National Fire Protection Association (NFPA).
1. NFPA 101 -- Life Safety Code
2. NFPA 70 -- National Electric Code
3. NFPA 1 National Fire Prevention Code
E. Maryland State Fire Prevention Code (COMAR 12.03.01 and
12.03.02)
F. Building Officials and Code Administrators International,
INC. (BOCA).
1. BOCA National Building Code
Part B - PRODUCTS
2.1 THROUGH-PENETRATION FIRESTOPPING OF FIRE-RATED CONSTRUCTION
A. Systems or devices listed in the U.L. Fire Resistance
Directory under categories XHCR and XHEZ may be used,
providing that it conforms to the construction type,
penetrant type, annular space requirements, and fire
rating involved in each separate instance, and that the
system be symmetrical for wall applications. Systems or
devices must be asbestos-free.
B. Only systems listed in the U.L. Fire Resistance directory
for the U.L. System involved are acceptable.
C. All firestopping products must be from a single
manufacturer.
2.2 CONSTRUCTION-GAP FIRESTOPPING OF FIRE-RATED CONSTRUCTION
A. Firestopping at construction gaps between edges of floor
slabs and exterior wall construction.
B. Firestopping at construction gaps between tops of
partitions and underside of structural systems.
C. Firestopping at construction gaps between tops of
partitions and underside of ceiling or ceiling assembly.
D. Firestopping of control joints in fire-rated masonry
partitions.
E. Firestopping expansion joints.
F. Acceptable manufacturers and products - those listed in
the U.L. Fire Resistance Directory for the U.L. System
involved.
2.3 SMOKE-STOPPING AT SMOKE PARTITIONS
A. Through-penetration smoke-stopping: Any system complying
with the requirements for through-penetration
firestopping in fire-rated construction provided that the
system includes the specified smoke seal or will provide
a smoke seal. The length of time of the fire resistance
may be disregarded.
B. Construction-gap smoke-stopping: Any system complying
with the requirements for construction-gap firestopping
in fire-rated construction, is acceptable, provided that
the system includes the specified smoke seal or will
provide a smoke seal. The length of time of the fire
resistance may be disregarded.
Part C - INSTALLATION
A. Install penetration seal materials in accordance with
printed instructions of the U.L. Fire Resistance
Directory and in accordance with manufacturer's
instruction.
B. Place firestopping in annular space around fire dampers
before installation of damper's anchoring flanges which
are installed in accordance with fire damper
manufacturers recommendations.
C. Insulated Pipes and Ducts: Cut and remove thermal
insulation where pipes or ducts pass through firestopping
material. Replace thermal insulation with a material of
equal thermal insulating characteristics and equal
firestopping characteristics.
7.02 Joint Sealants
All joint sealant materials shall be of the highest quality
and shall meet the qualifications for the intended use.
7.03 Roofs and Moisture Control
Tailoring of this guide specification is required to fit the
type of roof designated to meet the specific design
conditions. Additional data and specific guidance for a
project shall be obtained from the various manufacturers
specified. One copy of the contractor's submittal will be
forwarded to Facilities Management through the Department of
Architecture, Engineering, and Construction.
A. General
1. Specify copper or stainless steel flashing.
2. Specify sloped metal caps on parapet walls. Coping
shall be minimum 20 oz. copper or 32 gage factory
finish aluminum, installed with continuous cleats.
Each roof shall be covered by a 20 year, no dollar
limit, manufacturer's renewable guarantee covering
the complete roofing system including flashing.
Longer warranties may be appropriate depending upon
the type of roof specified and accepted by FM.
3. Roof top equipment shall be raised a minimum of 18"
from top of finished roof to bottom of unit for
access during roof replacement.
4. Provide minimum 30# live load for roofs.
5. Metal Coping
a. Specify a slope of one (1) inch slope per foot
(to the roof side) on the top of coping.
b. If parapet wall is to be covered by a metal
coping, specify a continuous treated wood
blocking, covered by a layer of building paper
and metal coping to be cleated on both sides.
6. Gravel Stop and Counter-Cap Flashing
a. Specify copper or lead coated copper, all
seams and miters to be soldered.
b. Face of metal flashing to be cleated 30 inches
on center.
7. Roof Drains, Through-Wall Scuppers and Overflow
Drainage Systems
a. Specify all roof drains and through - wall
scuppers (not overflow scuppers) to be sloped
2 ft. on center using taper insulation or
taper edge strip for positive drainage.
However, through-wall scuppers are not
encouraged.
b. Install a copper gravel stop 1 inch x 4 inches
and 36 inches square minimum, set in flashing
cement around roof drains on built-up
aggregate roofing systems. Apply a reflective
aluminum coating from gravel stop to drain
clamping ring.
c. All through wall scuppers shall empty into a
conductor head and downspout.
d. All overflow scuppers shall be set high enough
above the finished roof to ensured that water
doesn't drain through the overflow with a
normal rainfall.
B. Built-up Roofing Specifications
1. Substrate
a. Provide a minimum roof slope of 1/4" to 1/2"
per foot using light weight fill or taper
insulation toward drainage system (gutters,
roof drains, or through wall scuppers).
b. Slope built-up roof 6' square with taper
insulation toward roof drain and install
gravel stop 3' square minimum.
c. Specify conventional standard 4 ply fiberglass
felt built-up roof system with an aggregate
finished surface using #7 stone conforming to
ASTM # A - 4/7, minimum.
d. Provide walk out access to all roof levels for
maintenance personnel by use of penthouse
stairs or scuttle trap doors and stairway.
Access ladders from one level to another are
required.
2. Insulation
a. The thickness shall be such that the
insulation's only value is equivalent to a
minimum of a R-18 value. This value is for
the insulation only, not the complete roofing
system value.
b. All insulation shall be installed conforming
to U.L./F.M class 1/90 approval guide.
3. Base Flashing
a. All base flashing, shall be a minimum of 8
inches high from the finished roof surface.
b. Mechanically fasten top of base flashing, and
seal the top of all base flashing with
approved roofing cement and fabric before
applying metal counter flashing or metal cap
flashing.
4. Finished Surface
a. Clean gravel or slag (embed in bitumen flood
coat) meeting ASTM D 1863, which applies to
aggregates specified for use in bituminous
roofing.
b. White mineral surfaced cap sheet over ply
sheets of the built-up roofing system.
5. Guarantee
a. The contractor shall provide the University
with a written standard roofer's guarantee,
applicable to any leaks or failures due to
defective materials or workmanship, occurring
in the roof system or flashing within two
years from date of completion of the roof
work. This does not include any limiting
penal sum.
b. The material's manufacturer shall provide the
University with a 20 year unlimited labor and
material guarantee similar to that offered by
Schuller in its "Signature Series, No Dollar
Limit, (NDL) Watertite Roofing System".
6. Access
a. Provide access to all roof levels by means of
penthouse doors, access ladders, or roof
hatch.
C. Slate Roofing System
1. Slate shall be 1/4 inch thick Buckingham, Vermont,
Evergreen or equal and shall conform to physical
requirements of grade S1 classifications.
2. Winter/Guard or equal shall be installed on hips,
ridges, rakes, roof penetrations, eaves, and low
pitched roof slopes (between 2/12 and 4/12).
3. Install snow guards on all "A" frame substrate
roofing systems to protect entrances and gutters.
4. Guarantee
A written guarantee shall be furnished that states
the materials used are in strict accordance with
the specifications, and that any and all repairs
required on the roof due to defective materials or
workmanship furnished under the contract shall be
made without cost to the owner for a period of five
years.
D. Shingle Roofing System
1. Shingle shall be 25 year class A fiber glass
composition.
2. Winter/Guard or equal shall be installed on hips,
ridges, rakes, roof penetrations, eaves, and low
pitched roof slopes (2/12 and 4/12).
3. Install snow guards on all "A" frame substrate
roofing systems to protect entrances and gutters.
4. The contractor shall provide the University with a
written standard roofer's guarantee, applicable to
any leaks or failures due to defective materials or
workmanship, occurring in the roof system or
flashing within two years from date of completion
of the roof work. This does not include any
limiting penal sum.
5. The material's manufacturer shall provide the
University with a 25 year unlimited labor and
material guarantee for a Watertite Roofing System.