Firestation Addition/Repair Building 1950 XDQU029237 & XDQU042859

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Firestation Addition/Repair

Building 1950

XDQU029237 & XDQU042859





MECHANICAL SOUND, VIBRATION AND SEISMIC CONTROL 15200
-

1

SECTION 15200
-

MECHANICAL SOUND, VIBRATION AND SEISMIC CONTROL



PART 1
-

GENERAL:



1.01

SCOPE OF WORK


A.

Furnish all labor, materials, tools and equipment and perform all work necessary to
complete the installation of the Mechanical sound, vibration, and seism
ic control
systems required by these specifications and as detailed on the drawings.


B.

All foundations and supports required for the installation of Division 15 equipment
shall be furnished by the Division 15 contractor shall unless specifically specified
o
therwise.


C.

All concrete work, forming, framing, pouring and materials shall be furnished under
Division 1 General Trades Portion of the contract documents.



1.02

RELATED DOCUMENTS


A.

The drawings and general provisions of this division of the Contract, including

the
General and Special Conditions and Division 1 Specifications, apply to this Section.


B.

Additionally, the following sections apply to this section:


1.

Concrete Se
ction of the contract documents

2.

Section
15000


General Provisions

3.

Section 15
094


Hangers an
d Supports

4.

Division 16

-

Electrical



1.03

QUALITY ASSURANCE


A.

Codes & Standards:

The installation of the Mechanical systems (HVAC, Plumbing,
and Fire Protection) shall be installed in accordance with the following codes and
standards. All seismic restraint sy
stems such as sway bracing, cable restraints,
seismic snubbers, seismic restraints, and vibration isolators shall also meet the
requirements as set forth in the following standards and codes:



Firestation Addition/Repair

Building 1950

XDQU029237 & XDQU042859





MECHANICAL SOUND, VIBRATION AND SEISMIC CONTROL 15200
-

2

1.

2006

International Building Code

(IBC)

2.

ASHRAE

3.

SMACNA Seismic Re
straint Manual

4.

ASTM 488 Anchor locations

5.

FEMA Standards


B.

The mechanical sound, vibration, and seismic control equipment and products shall
be sized and provided by one of the manufacturers listed below. The manufacturer
shall have tested all seismic produ
cts provided for the specific intended use and
installation.


C.

The following list of manufacturers are acceptable manufacturers:


1.

Amber/Booth

2.

Kinetics Noise Control

3.

Mason

4.

Vibration Mountings and Controls


D.

The manufacturer and/or his representative shall sel
ect all vibration isolation products
in
-
accordance with the Vibration Isolation Schedule listed in these specifications. All
products shall provide the specified deflection as indicated based on the actual
equipment weights and installation requirements o
f the approved equipment. The
manufacturer shall provide installation instructions for all provided isolators and
seismic restraints and bracing. Locations of vibration isolation products shall be
coordinated with equipment details shown on the drawings
and also as specified in
these specifications for maximum support locations for piping and other equipment.


E.

Submittals


1.

The contractor shall submit for approval by the engineer all products intended to
be used to meet the requirements of these specificati
ons. Submittal data shall
include a proposed schedule for vibration isolation products, manufacturer’s data
and cut sheets of the specific vibration isolation, seismic control or sound barrier
materials. Proposed vibration isolation schedule shall list a
ll equipment specified
to be isolated, the equipment weight, proposed isolator type or base type, number
of isolators required, spring or isolator color, and deflection of the spring or
vibration isolator based on the equipments weight.

2.

The contractor shal
l submit for approval by the engineer, seismic anchorage
requirements for all equipment. Anchorage calculations shall be prepared by a
registered engineer and in the state where the project will be constructed. The
engineer shall stamp calculations. Anc
horage requirements shall be submitted for

Firestation Addition/Repair

Building 1950

XDQU029237 & XDQU042859





MECHANICAL SOUND, VIBRATION AND SEISMIC CONTROL 15200
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all base mounted equipment, suspended equipment, & roof mounted equipment.
Seismic anchorage calculations shall include an “anchorage schedule” for the
contractor’s use. Anchorage schedule shall list the equipme
nt, the size and
quantity of fasteners and the minimum embedment depth of anchors.
Calculations may be combined for similar types of equipment provided the size
and weight does not vary more than 15% and the installation manner are similar.

PART 2
-

PROD
UCTS



2.01

GENERAL


A.

All equipment shall be mounted or suspended from approved foundations and
supports as specified herein or as detailed on the drawings.


B.

The vibration isolation products and systems shall have a deflection as recommended
by the manufacturer
but not less than the deflection indicated in the Vibration
Isolation Schedule.


C.

The vibration isolation manufacturer may select and propose non
-
seismic type
isolators, provided snubbers are furnished and installed to limit the horizontal
movement of equip
ment. Snubbers shall be selected to resist the maximum
calculated lateral force of the equipment. Calculations shall be submitted and sealed
by the professional engineer certifying the snubber’s selection and anchorage
requirements.



2.02

ISOLATOR TYPES


A.

Typ
e 1



Floor

Mounted Equipment (non seismic)
:
Vibration isolators shall be pre
-
compressed molded fiberglass pads individually coated with a flexible, moisture
impervious elastomeric membrane. Vibration isolation pads shall be molded from
glass fibers with
fiber diameters not exceeding .00027 in. and with a modulus of
elasticity of 10.5 million PSI. Natural frequency of fiberglass vibration isolators shall
be essentially constant for the operating load range of the supported equipment.
Vibration isolators s
hall be color coded or otherwise identified to indicate the load
capacity. Fiberglass pads shall be Kinetics Model KIP.


B.

Type 2

-

Floor Mounted Equipment (non seismic)
:
Vibration isolators shall be
neoprene, molded from oil
-
resistant compounds. Isolator
s shall consist of two layers
of neoprene material. Top and bottom surfaces of each layer shall have molded ribs.
Each layer shall be separated by a 16 gauge galvanized steel load plate bonded to

Firestation Addition/Repair

Building 1950

XDQU029237 & XDQU042859





MECHANICAL SOUND, VIBRATION AND SEISMIC CONTROL 15200
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each neoprene layer to form a sandwich arrangement. Vibrat
ion isolator size shall be
coordinated with the equipment supports. Minimum size shall be 2”x2”.

Isolators
shall be Kinetics Model NPD.


C.

Type 3
-

Floor Mounted Equipment (non
-
seismic)
:
Vibration isolators shall be
neoprene, molded from oil
-
resistant co
mpounds, with a cast
-
in
-
the top steel load
transfer plate for bolting and leveling equipment. Isolator shall have an integral
molded support foot for bolting the isolator to the supporting structure.

Neoprene
isolator shall have a minimum deflection of 0
.4”.

Isolators shall be Kinetics Model
RD


D.

Type 4

-

Floor
-
Mounted Equipment (non seismic)
:
Vibration isolators shall be free
standing, un
-
housed, laterally stable springs wound from high strength spring steel.
Springs shall have a lateral stiffness great
er than 0.8 times the rated vertical stiffness
and shall be designed to provide up to 50% overload capacity. Springs shall be
selected to provide operating static deflections shown on the Vibration Isolation
Schedule or as indicated on the project document
s. Springs shall be color coded or
otherwise identified to indicate load capacity. In capacities up to 5,000 lbs., springs
shall be replaceable. In capacities over 5,000 lbs., springs shall be welded to the top
and bottom load plate assemblies. Springs sha
ll be assembled between a top and
bottom steel load plate. The upper load plate shall be provided with steel leveling bolt
lock nut and washer for attachment to the supported equipment. The lower load plate
shall have a non
-
skid noise isolation pad bonded
to the bottom and have provisions
for bolting the isolator to the supporting structure.

Isolators shall be Kinetics Model
FDS


E.

Type 5

-

Floor Mounted Equipment (seismic)
:
Vibration isolators shall be
seismically rated and consist of large diameter later
ally stable steel springs assembled
into formed or welded steel housing assemblies designed to limit vertical movement
of the supported equipment and the horizontal movement.

Housing assembly shall be
formed or fabricated steel members and shall consist o
f a top
-
load plate complete
with adjusting and leveling bolts, isolation washers and a bottom plate with non
-
skid
noise stop pads and holes provided for anchoring to supporting structure.

Springs
shall have a lateral stiffness greater than 0.8 times the r
ated vertical stiffness and shall
be designed to provide up to 50% overload capacity.

Isolator shall be designed to
allow replacement of the spring element without removing the spring isolator
housing.

Vibration isolators shall be Kinetics Model FHS


F.

Typ
e 6

-

Restrained Spring Isolators (non seismic)
:
Vibration isolators shall be
galvanized coated and consist of large diameter laterally stable steel springs
assembled into formed or welded steel housing assemblies designed to limit vertical

Firestation Addition/Repair

Building 1950

XDQU029237 & XDQU042859





MECHANICAL SOUND, VIBRATION AND SEISMIC CONTROL 15200
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5

movement of th
e supported equipment.

Housing assembly shall be formed or
fabricated steel members and shall consist of a top
-
load plate complete with adjusting
and leveling bolts, vertical restraints, isolation washers and a bottom plate with non
-
skid noise stop pads a
nd holes provided for anchoring to supporting structure.

Springs shall have a lateral stiffness greater than 0.8 times the rated vertical stiffness
and shall be designed to provide up to 50% overload capacity.

Vibration isolators
shall be Kinetics Model
FLS.


G.

Type 7

-

Restrained Spring Isolators (seismic)
:
Vibration isolators shall be
galvanized coated and consist of large diameter laterally stable steel springs
assembled into formed or welded steel housing assemblies designed to limit vertical
movement
of the supported equipment.

Housing assembly shall be formed or
fabricated steel members and shall consist of a top
-
load plate complete with adjusting
and leveling bolts, vertical restraints, isolation washers and a bottom plate with non
-
skid noise stop p
ads and holes provided for anchoring to supporting structure.

Springs shall have a lateral stiffness greater than 0.8 times the rated vertical stiffness
and shall be designed to provide up to 50% overload capacity.

Vibration isolators
shall be Kinetics M
odel FLSS.


H.

Type 8

-

Suspended Equipment

and
Ductwork
:
Vibration isolator
s

shall be a hanger
s

consisting of an elastomer
-
in
-
shear insert encased in a welded steel bracket and
provided with a stamped load transfer cap.

The elastomer insert shall be neopre
ne,
molded from oil resistant compounds and shall be color coded to indicate load
capacity and selected to operate within its published load range.

The hanger bracket
shall be designed to carry a 500% overload without failure and to allow a support rod
mi
salignment through a 30
-
degree arc without metal
-
to
-
metal contact or other short
circuit.

Vibration isolation shall be Kinetics Model RH.


I.

Type 9

-

Suspended Equipment, Piping

and

Ductwork
:
Vibration isolators shall be
hangers consisting of a freestandin
g, laterally stable steel spring and elastomeric
washer in series, assembled with load transfer plates in a stamped or welded steel
bracket. Springs shall have a lateral stiffness greater than 0.8 times the rated vertical
stiffness and shall be designed
to provide up to 50% overload capacity.

Vibration
isolation hangers shall be Kinetics Model SH.


J.

Type 10

-

Suspended Equipment, Piping

and

Ductwork
:
Vibration Isolators shall
consist of a steel spring and neoprene element in series mounted in a stamped o
r
welded steel bracket for insertion into the hanger rod assembly.

The elastomer insert
shall be neoprene, molded from oil resistant compounds and shall be color coded to
indicate load capacity and selected to operate within its published load range.

The

steel spring shall consist of large diameter laterally stable steel springs assembled into

Firestation Addition/Repair

Building 1950

XDQU029237 & XDQU042859





MECHANICAL SOUND, VIBRATION AND SEISMIC CONTROL 15200
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6

formed or welded steel housing assemblies designed to limit movement. Springs
shall have a lateral stiffness greater than 0.8 times the rated vertical stiffness an
d shall
be designed to provide up to 50% overload capacity.

The steel bracket shall be
fabricated from steel and provided with a corrosion resistance finished. The hanger
bracket shall be designed to carry a 500% overload without failure and to allow a
s
upport rod misalignment through a 30
-
degree arc without metal
-
to
-
metal contact or
other short circuit. The hanger bracket shall incorporate spring caps with indexed
steps, which correspond to the washer diameter of the hanger rod to keep the rod
centered
in the spring cap.

Vibration isolation hangers shall be Kinetics Model SRH


K.

Type 11

-

Suspended Equipment, Piping

and

Ductwork: Vibration Isolators shall
consist of a steel spring and fiberglass element in series mounted in a stamped or
welded steel brac
ket for insertion into the hanger rod assembly. Fiberglass element
shall be a pre
-
compressed molded fiberglass pad coated with a flexible, moisture
impervious elastomeric membrane. Vibration isolation pad shall be molded from
glass fibers with fiber diame
ters not exceeding .00027 in. and with a modulus of
elasticity of 10.5 million PSI. Natural frequency of fiberglass pad shall be essentially
constant for the operating load range of the supported equipment. Fiberglass pad shall
be color coded or otherwise

identified to indicate the load capacity. The steel spring
shall consist of large diameter laterally stable steel springs assembled into formed or
welded steel housing assemblies designed to limit

movement.

Springs shall have a
lateral stiffness greater

than 0.8 times the rated vertical stiffness and shall be designed
to provide up to 50% overload capacity. The steel bracket shall be fabricated from
steel and provided with a corrosion resistance finished. The hanger bracket shall be
designed to carry a

500% overload without failure and to allow a support rod
misalignment through a 30
-
degree arc without metal
-
to
-
metal contact or other short
circuit. The hanger bracket shall incorporate spring caps with indexed steps, which
correspond to the washer diame
ter of the hanger rod to keep the rod centered in the
spring cap. Vibration isolation hangers shall be Kinetics Model SFH.



2.03

BASES, RAILS AND CURBS
:
All bases, rails and curbs shall be rated to withstand a wind loading
of 130
-
MPH.


A.

Type A

-

Structural St
eel Isolation Bases: Bases shall be fabricated from structural
steel beam sections with welded construction forming a structural base for the
equipment supported. Structural steel sections shall consist of wide flange beam
sections, channels, and/or angl
es. Bases shall have welded isolator support brackets
and pre
-
located and drilled anchorbolt holes for the supported equipment. Isolator
support brackets shall be located along the support beams as required to maintain the
lowest mounting height for the
supported equipment. Lateral cross members shall be

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Building 1950

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MECHANICAL SOUND, VIBRATION AND SEISMIC CONTROL 15200
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provided to add structural integrity to the welded frame and to provide a rigid and
distortion free common frame. Isolation bases shall be Kinetics Model SFB.


B.

Type B

-

Concrete Inertia Bases: Bases sh
all consist of a concrete base cast into a
welded galvanized steel
-
pouring frame with welded isolator brackets and steel
reinforcing rods. Minimum depth shall be 6”. Bases shall be specifically designed
and fabricated to receive poured concrete for use i
n supporting the intended
equipment. The concrete pouring frame shall contain ½” reinforcing rods on 8”
centers each way. The isolator brackets shall be located on each corner of the pouring
frame and be located so that a minimum of 1” clearance is provi
ded in an operating
condition between the bottom of the base and the support floor or base. Pouring
frame shall contain a template for locating the anchor bolts for the supported
equipment. Concrete inertia bases shall be Kinetics Model CIB
-
L.


C.

Type C

-

Roof Mounted Equipment Vibration Isolation Rails
:
Vibration isolation
rails shall consist of an extruded aluminum lower support rail, extruded aluminum
upper support rail, steel springs located between the support rail and a continuous
weatherproof seal l
ocated between the upper and lower support rails.

Vibration
isolation rails shall be fabricated and designed to be installed and secured on top of
the standard manufacturers roof curb furnished with the equipment.

Isolation rails
shall provide continuous

support for the roof
-
mounted equipment.

Isolation rails
shall be designed and engineered to provide isolation against casing radiated vibration
and structure born vibration from rotating equipment.

The steel springs shall consist
of large diameter later
ally stable steel springs that have a lateral stiffness greater than
1.0 times the rated vertical stiffness and shall be designed to provide up to 50%
overload capacity.

Isolation rails shall have seismic restraints fabricated and attached
to the isolatio
n rail assembly to resist the horizontal forces. Seismic restraints shall
be certified by the manufacturer and stamped by a registered engineer.

Isolation rail
assemblies shall include supply and return duct block
-
outs as an integral part of the
isolatio
n rail assembly.

Isolation rails shall be Kinetics Model KSR.


D.

Type D

-

Roof Mounted Vibration Isolation Curbs
:
All roof top air conditioning units
shall be mounted and installed on vibration isolation curbs. The vibration isolation
curbs shall be a com
plete assembly designed to resiliently support the equipment with
a minimum operating height of 21” and shall be fully enclosed and weather tight.
The isolation curb shall consist of an upper support rail with supply and return air
duct supports and a low
er support curb that is attached to the supporting roof
structure. The upper and lower supports shall be separated by free
-

standing un
-
housed, laterally stable spring isolators. Access ports shall be provided in the curb to
access spring isolators.

The

upper support rail shall be fabricated from a structural
channel with sufficient elevation above the springs to preclude interference with the

Firestation Addition/Repair

Building 1950

XDQU029237 & XDQU042859





MECHANICAL SOUND, VIBRATION AND SEISMIC CONTROL 15200
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8

rooftop equipment and permit access to inspect the spring isolators.

The lower
support curb shall be a formed g
alvanized steel channel with a 1 ½” wood nailer
around the perimeter of the supporting upper rail. The lower support curb shall be a
minimum of 14” high.

An ozone and UV resistant weather seal shall be installed
between the upper and lower supports to pr
ovide a weatherproof installation.

Spring
isolators shall be selected to provide 1” deflection for the equipment installed. Steel
springs shall be free standing, un
-
housed, laterally stable. Springs shall have a
minimum lateral stiffness of 1.2 times th
e rated vertical stiffness, and shall be
designed for a 50% overload to solid height.

Curb shall be insulated with a minimum
of 1” fiberglass insulation.

Curb shall be engineered and certified to meet the seismic
requirements of the location installed.
A licensed registered engineer shall stamp
curb design and engineering calculations to show compliance to the International
Building Code.

Curbs shall be Kinetics Model ESR.


E.

Type E

-

Roof Curbs
:
Roof curbs for roof mounted equipment shall be a minimum

of 1 ½” wide and 14” high and be fabricated from G 90 galvanized steel fully welded
at each corner. Curbs shall be fabricated from a minimum of 18
-
gage steel or heavier
as required to support the intended equipment

and

shall have fully mitered corners
an
d base plates to secure curb to the support roof steel.

Curbs shall be reinforced
with internal steel angles to provide a rigid support for the equipment

and

shall be
insulated with a minimum of 1 ½” thick 3# density, fiberglass insulation.

Curbs shall
h
ave a 2”x2” wood nailer attached to the curb top for securing the equipment.

Curbs
shall be seismically rated for the installation in accordance with the International
Building Code. A registered engineer shall stamp submittals.

Curbs shall be Curbs
Plu
s Model CPC
-
3.

Kitchen hood exhaust fan curbs shall be seismically rated and
shall meet requirements of NFPA 96.



2.04

SOUND CONTROL PRODUCTS


A.

Duct Sound Attenuators
:


1.

Sound attenuators shall be rectangular or round as indicated on the schedule.

2.

Attenuators s
hall be double wall construction with the outer shell being fabricated
from 22 gage galvanized steel and the inner shell fabricated from 24 ga
u
ge
perforated galvanized steel. Interior steel partitions shall be double wall
construction fabricated from 24 g
a
u
ge perforated galvanized steel.

3.

Acoustic fill material shall be installed between the inner and outer shell and also
in the interior partitions. Acoustic fill shall be fiberglass.

4.

Sound attenuators shall provide the dynamic insertion loss indicated on t
he
drawings in all octave bands.


Firestation Addition/Repair

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MECHANICAL SOUND, VIBRATION AND SEISMIC CONTROL 15200
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5.

Duct sound attenuators shall meet the fire hazard classification ratings in
accordance with ASTM
-
E84. Fire hazard ratings shall be a flame spread of 25
and smoke development of 20.

6.

Duct sound attenuators shall be Vibron Pr
oducts Group, Semco, or Vibro
-
Acoustics.


B.

Acoustical Sound Barrier
:


1.

Acoustical sound barrier material shall be installed within the curb area of all roof
top units.

2.

Barrier material shall be constructed of a vinyl material with a reinforced
fiberglass scr
een loaded with barium sulfate, 1.0 lb per square foot. Tensile
strength shall be 300 lbs per inch and tear strength shall be 100 lbs per in.

3.

Install 2 layers of acoustical barrier material inside the roof curb. Barrier
material shall be cut and uniform
ed installed inside the curb area on top of the
metal roof deck and around the supply and return air ducts.

4.

Barrier material shall be Kinetics KNM
-
100 RB.


C.

Acoustical Duct Wrap Barrier
:


1.

Acoustic duct wrap barrier shall be fabricated of a composite materia
l consisting
of an acoustic barrier material bonded to a thin layer of aluminum foil on one side
and a decoupling layer of fiberglass batting material.

2.

Acoustic barrier shall be constructed of 0.10” thick barium sulphate loaded limp
vinyl.

3.

Barrier materi
al shall have a “K” value of 0.29 and STC rating of 28.

4.

Barrier material shall have a nominal density of 1 psf.

5.

Barrier material shall be Kinetics Model 100 ALQ
-
1.


D.

Floating Floors
:


1.

Provide a floating floor system in areas where indicated on the drawings.


2.

Floating floors shall be designed and fabricated at the facilities of a nationally
recognized manufacturer, and the system shall be installed by the manufacturer.
Floating floor systems shall include isolation pads, perimeter isolation, duct and
pipe
penetration isolation, low density sound absorption acoustical material,
concrete pouring form and stiffeners, temporary waterproofing, floor drains,
adhesive, and perimeter caulking.

3.

The isolation system shall have been tested for acoustical performance b
y an
independent testing Laboratory, and the rating shall exceed STC 72 and INR + 18.
Dynamic natural frequency of the isolators shall be 15 Hz or lower, and shall be

Firestation Addition/Repair

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XDQU029237 & XDQU042859





MECHANICAL SOUND, VIBRATION AND SEISMIC CONTROL 15200
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10

constant with 2 Hz over the entire load range of the floor system. The floor
system sha
ll be designed to safely withstand an imposed load of 200 PSF in the
open areas and a minimum overload capacity of 100% in the high load areas.
Isolators shall be molded fiberglass pads, individually coated with a flexible
elastomeric membrane. Isolation

pads shall be 2” thick and shall be spaced as
recommended by the manufacturer but not greater than 24” o.c. each way. Pads
shall be of glass fibers produced by a multiple flame attenuation process which
generates nominal fiber diameters not exceeding .00
018 inches, stabilized by pre
-
compression. Pads shall have satisfactorily passed WMATA Section 3.49
dynamic test for isolator perm
a
nence.

4.

1
-
1/2” thick low
-
density fiberglass noise absorption material, with an NRC rating
of
0
.87, shall be bonded to the iso
lation pads, and shall cover a minimum of 95%
of the area between the isolation pads.

5.

The concrete pouring forms shall be 1/2” thick, exterior grade plywood.

6.

Perimeter isolation shall be 3/4” thick resilient material as recommended by the
manufacturer.

7.

Per
manent waterproofing, reinforcing, concrete, and miscellaneous ironwork shall
be covered under other sections. Factory engineering submittal shall include, but
not limited to: (a) isolation pad material, density, dynamic stiffness, dynamic
natural freque
ncy under all load conditions, (b) coating material, (c) certification
showing satisfactory compliance with WMATA Section 3.49 dynamic test, (d)
low density material, (e) pouring form sizes, (f) perimeter board material, density,
and size, (g) completely d
imensioned layout for the specified area, based on
verified field conditions, (h) certified independent Laboratory test report, (I)
clearly defined installation instructions, indicating sequence of operation, trades
required, etc., (j) samples of all mater
ials submitted.

8.

Floating floor shall be Kinetics Model RIM.



2.05

FLEXIBLE PIPE CONNECTORS:


A.

Type F
-
1
:


1.

Flexible pipe connectors shall be single sphere type with floating flanges.
Connectors shall meet the specification requirements of the Rubber Expansion
Jo
int Division of the Fluid Sealing Association.

2.

Connectors shall be fabricated from molded neoprene reinforced with nylon tire
cord and shall have mild steel floating flanges. The cover and liner elastomer
shall be EPDM. Flanges shall be flat
-
faced type.

3.

Flexible connectors shall have an operating pressure rating of 225 psig at a
temperature of 225 F.


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MECHANICAL SOUND, VIBRATION AND SEISMIC CONTROL 15200
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4.

Flexible pipe connectors shall be furnished with control rods to limit the
expansion and contraction.

5.

Flexible connectors shall be Proco Model 240 AV/EE, Kin
etics Noise Control
Model FC, or Engineered Flexible Products.


B.

Type F
-
2
:


1.

Flexible pipe connectors shall be double sphere type with floating flanges.
Connectors shall meet the specification requirements of the Rubber Expansion
Joint Division of the Fluid

Sealing Association.

2.

Connectors shall be fabricated from molded neoprene reinforced with nylon tire
cord and shall have mild steel floating flanges. The cover and liner elastomer
shall be EPDM. Flanges shall be rated for 150 # and be the flat
-
faced type
.

3.

Flexible connectors shall have an operating pressure rating of 225 psig at a
temperature of 225 F.

4.

Flexible pipe connectors shall be furnished with control rods to limit the
expansion and contraction.

5.

Flexible connectors shall be Proco Model 242 A/EE, Ki
netics Model FTC, or
Engineered Flexible Products.


C.

Type F
-
3
:


1.

Flexible pipe connectors shall be the braided flexible metal type consisting of a
corrugated stainless steel inner liner and braided stainless steel outer jacket.
Flexible pipe connectors for
piping 2” and smaller shall have threaded male end
connectors. Flexible pipe connectors for piping 2 ½” and larger shall have 150 #
flat
-
faced flanges.

2.

Flexible pipe connectors shall have a minimum rating or 125 psig at 70 F.

3.

Flexible pipe connectors shal
l be Proco Series TTS
-
6201

or FF
-
6201, or Kinetics
Model
BFMC
-
FFF or BFMC
-
MTE, or Engineered Flexible Products.



2.06

SEISMIC CONTROL:


A.

The mechanical systems serving the building shall be installed to meet the minimum
requirements of the International Buildin
g Code regarding seismic protection and
control. These specifications and the drawings indicate the minimum requirements
and general intent. The actual requirements shall be determined by the seismic
engineer and supplier and submitted for approval by th
e Mechanical Engineer.



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MECHANICAL SOUND, VIBRATION AND SEISMIC CONTROL 15200
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B.

The seismic engineer shall be a registered engineer in the state in which the facility is
constructed and whose principal area of practice is seismic engineering and related
fields.


C.

All equipment installed either floor or pad mount
ed, suspended from the structure or
roof mounted on curbs shall be restrained and anchored unless exempt as hereinafter
indicated.


D.

The following criteria applies to this project: and the mechanical systems:


1.

The site cla
ssification will be:


D

2.

The Se
ismic

Design Category will be:

D

3.

The Seismic
Occupancy

Group will be:

IV

4.

The Importance

Factor for systems will be:

1.5


E.

Where pipes, ducts, conduits, or other mechanical systems cross the seismic isolation
interface between two seismically isolated structures,

the systems shall have flexible
connections to accommodate the seismic displacement of the two structures. Flexible
connectors shall be installed on one side of the interface.


F.

The following mechanical components are exempt from seismic bracing or restra
ints:


1.

All components in seismic design category D, E, & F, weighing 20 lbs or less
when the importance factor = 1.0.

2.

Ducts with a cross sectional area less than 6 square feet when the importance
factor =1.0
.

3.

All ducts installed 12” or less from the point
of connection to the supporting
structure and the top of the duct with an importance factor =1.0.

4.

Duct system components such as terminal air boxes having flexible duct
connectors on the inlet or outlet or both and weighing 20 lbs or less when the
importan
ce factor = 1.0.

5.

Duct system components such as terminal air boxes having no flexible duct
connectors and weighing less than 75 lbs when the importance factor = 1.0.
These items will be considered part of the duct system.

6.

Piping installed 12” or less from

the point of connection to the supporting
structure and the top of the pipe when the importance factor = 1.0.

7.

Equipment installed less than 4’
-
0” above the floor and weighing less than 400 lbs
when the importance factor = 1.0.

8.

Any ductwork and piping inst
alled in a structure when the Seismic Design
Category is A or B.


Firestation Addition/Repair

Building 1950

XDQU029237 & XDQU042859





MECHANICAL SOUND, VIBRATION AND SEISMIC CONTROL 15200
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13

9.

Any
ductwork and
piping installed in a structure
when the Seismic Design
Category is
C and
the

importance factor = 1.0.


G.

All life safety systems installed in the building such as fire protect
ion systems

and

smoke removal systems shall have an importance factor of 1.5. Systems having an
importance factor of 1.5 shall be restrained.


H.

Where systems are specified to have spring isolation hangers, the hangers shall be
installed as close as possibl
e to the supporting structure.


I.

Equipment installed on non
-
seismic type spring isolators shall have snubbers installed
to limit the horizontal movement of the equipment in any direction.


J.

Seismic restraint cables or seismic restraint braces shall be instal
led on piping
systems and suspended equipment. Seismic restraint cables shall be stranded steel
cable provided with mounting hardware for connection to the equipment hanger rod,
to the equipment housing or trapeze hangers. The stranded steel cables and h
ardware
shall be the product of a single manufacture and shall have been tested for the
intended use. Published data shall be available and submitted to identify the load
limitations of the proposed restraint hardware. As a minimum the following cable
si
zes shall be used on piping and equipment:


1.

Piping 1” to 2 ½”:


1/16” steel cable

2.

Piping 3” to 8”:


3/16” steel cable

3.

Piping 10” and larger
:


1/4
” steel cable

4.

Equipment weighting 400 lbs or less:

3/16” steel cable

5.

Equipment weight 401 lbs and higher:

1/4

steel cable


K.

Anchorage of equipment to concrete floors and pads shall be in
-
accordance with the
submitted anchorage calculations.


L.

Connections of seismic restraint cable hardware shall be in
-
accordance with the
submitted anchorage calculations.


M.

Snubbers s
hall be installed for equipment installed on non
-
seismic type spring
isolators.


1.

Type S
-
1 snubbers shall be welded steel angles with mounting holes and a
resilient neoprene pad applied to the angle surface that faces the equipment.
Snubbers shall be insta
lled on all four (4) sides of the equipment and shall limit
the horizontal movement to
1/4
”. A minimum of (4) snubbers will be required.


Firestation Addition/Repair

Building 1950

XDQU029237 & XDQU042859





MECHANICAL SOUND, VIBRATION AND SEISMIC CONTROL 15200
-

14

Snubbers shall be attached to the floor or concrete pad with fasteners as indicated
in the submitted seismic anchorag
e calculations. Snubbers shall be Kinetics
Model HS
-
1.

2.

Type S
-
2 snubbers shall be multi
-
directional by design and consist of a base plate
with a welded cylinder and a mating seismic restraint angle with guide hole to
receive the seismic restraint cylinde
r. The seismic restraint cylinder shall have a
neoprene tube around the circumference of the cylinder and provide a maximum
of 1/8” horizontal movement of equipment. A minimum of (2) Type S
-
2 snubbers
shall be installed on any (1) piece of equipment. Sn
ubbers shall be Kinetics
Model HS
-
2.

3.

Type S
-
3 snubbers shall be multi
-
directional plus vertically restrained type
snubbers. Snubbers shall be fabricated of welded steel and consist of a base plate
with welded vertical cylinder and a mating seismic restrai
nt angle with guide hole
to receive the vertical restraint cylinder. Additionally, the vertical restraint
cylinder shall be threaded and provided with a limit bolt and washer that will limit
the vertical movement as well as the horizontal movement of the
equipment.
Snubbers shall be Kinetics Model HS
-
3.



2.07

SCHEDULE FOR MECHANICAL SYSTEMS:


Equipment Type


Isolator Type

Base Type

Deflection

Flex.
Pipe


Piping located in Mechanical Rooms

Type 10

None

1.0”

None


Ductwork in Mechanical Rooms

Type 8

None

0.4”

No
ne



PART 3
-

EXECUTION




3.01

GENERAL:


A.

If the equipment provided is not furnished with integral structural steel supports,
mounting feet or lifting lugs, the contractor shall provide miscellaneous steel shapes
as required to install or suspend the equipment

and attach the vibration isolation or
seismic restraints as specified herein.

B.

Support steel shall include but not be limited to rails, brackets, angles, channels, and
similar components.



Firestation Addition/Repair

Building 1950

XDQU029237 & XDQU042859





MECHANICAL SOUND, VIBRATION AND SEISMIC CONTROL 15200
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15

C.

All equipment specified to be isolated shall be installed and isola
tors shall be attached
to the building structure or floor and the vibration isolators shall be adjusted and
leveled so that the vibration isolators are performing properly.


D.

All vibration isolation products, seismic restraint products, flexible pipe connec
tors
and sound control products shall be installed as outlined in the manufacturer’s printed
installation instructions.



3.02

SEISMIC AND VIBRATION ISOLATION CERTIFICATE OF COMPLIANCE:


A.

The manufacturer’s representative shall be responsible for providing such
assistance
and supervision as necessary to assure a correct installation and adjustment of
vibration isolation products.


B.

The manufacturer’s representative shall visit the installation once all installed items
have been completed but prior to the installat
ion of ceilings or walls that may conceal
any devices and inspect the installation for compliance with the manufacturer’s
installation instructions. Upon satisfaction that all devices are installed correctly and
systems are isolated properly, the represen
tative shall submit a written report
outlining the installation as in compliance with these specifications and also the
manufacturer’s installation instructions.


C.

A separate report shall be prepared for the vibration isolation installation and the
seismic
installation.



END OF SECTION 15200