22_05_48.00_20_AM_9.pdf

AM#9 READY TO ADVERTISE CLR039a LRDR Construction Package #1 - Clear AFS, Alaska

SECTION 22 05 48.01 20

MECHANICAL SOUND, VIBRATION, AND SEISMIC CONTROL

PART 1 GENERAL

1.1 REFERENCES

The publications listed below form a part of this specification to the extent referenced. The publications are referred to within the text by the basic designation only.

AMERICAN INSTITUTE OF STEEL CONSTRUCTION (AISC)

AISC 360 (2010) Specification for Structural Steel Buildings

AMERICAN WELDING SOCIETY (AWS)

AWS D1.1/D1.1M (2015; Errata 2015) Structural Welding Code - Steel

ASTM INTERNATIONAL (ASTM)

ASTM A123/A123M (2013) Standard Specification for Zinc (Hot-Dip Galvanized) Coatings on Iron and Steel Products

ASTM A36/A36M (2014) Standard Specification for Carbon Structural Steel

ASTM A653/A653M (2015) Standard Specification for Steel Sheet, Zinc-Coated (Galvanized) or Zinc-Iron Alloy-Coated (Galvannealed) by the Hot-Dip Process

ASTM C94/C94M (2015) Standard Specification for Ready-Mixed Concrete

ASTM D2240 (2005; R 2010) Standard Test Method for Rubber Property - Durometer Hardness

ASTM D471 (2012a) Standard Test Method for Rubber Property - Effect of Liquids

ASTM E84 (2015a) Standard Test Method for Surface Burning Characteristics of Building Materials

SHEET METAL AND AIR CONDITIONING CONTRACTORS' NATIONAL ASSOCIATION

(SMACNA)

SMACNA 1793 (2012) Architectural Sheet Metal Manual, 7th Edition

SMACNA 1981 (2008) Seismic Restraint Manual Guidelines for Mechanical Systems, 3rd Edition

SECTION 22 05 48.01 20 Page 1

READY TO ADVERTISE

1.2 RELATED REQUIREMENTS

The provisions of Section 23 03 00.01 20 BASIC MECHANICAL MATERIALS AND METHODS apply to this section.

1.3 DEFINITIONS

1.3.1 Decibels dB

Measure of sound level. Decibels are referenced to either 20 uPa for sound pressure levels or one pW for sound power levels. dBA is the overall "A" weighted sound level.

1.3.2 Machinery

The vibration or noise producing equipment that must be isolated.

1.3.3 Manufacturer

The fabricator or supplier of vibration-isolation or seismic-protection materials and equipment. For mechanical equipment and machinery the term machinery manufacturer will be used.

1.3.4 Micropascal uPa

10 to the minus 6 power newtons per square meter.

1.3.5 Picowatt pW

10 to the minus 12 power watts.

1.4 SYSTEM DESCRIPTION

1.4.1 Spring Isolator Data

For each type and size of spring isolator, submit the spring outside diameter, deflection, operating spring height, unloaded spring height, solid spring height, the ratio of the outside diameter to the operating spring height, the load to deflection ratio of the springs, and weight and sizes of structural steel members.

1.4.2 Machinery Manufacturer's Sound Data

For each piece of indicated machinery to be vibration isolated, the calculated sound power test data or sound pressure test data as levels in dB in the eight octave bands between 63 and 8,000 Hz. Refer sound power levels to one pW and sound pressure levels to 20 uPa. Submit the overall "A" weighted scale sound pressure level in dB. Submit the standard test procedure used to obtain the sound power or pressure data for the applicable vibration isolation equipment size.

1.4.3 Machinery

For each item of machinery, compare spring static deflections with the specified minimum static deflection, to show that the calculated spring static deflections are not less than the minimum static deflections specified. Rated spring static deflections are not acceptable in lieu of calculated spring static deflections. When seismic protection is required, SECTION 22 05 48.01 20 Page 2 substantiating calculations are required.

1.4.4 Machinery Over 300 Pounds

For machinery items over 300 pounds, provide calculations for shear, pull-up, primary overturning, and secondary overturning.

1.4.5 Machinery Vibration Criteria

TABLE 1A

Vibration Isolator Types and Minimum Static Deflection

(MSD, inches) for 4-8 inch slab on grade and column supported.

Column Spacing Slab on earth and 0-30 feet

31-40 feet 41-50 feet

Equipment Type (Note (1))

MSD (Note (1))

Type (Note (1))

MSD (Note (1))

Type (Note (1))

MSD (Note (1))

Reciprocating Air or Refrigeration Compressors

500 to 750 rpm S-R 1.75 S-R 2.5 S-R 3.5

751 rpm and up S-R 1.5 S-R 2.5 S-R 3.5

Closed Coupled Pumps

Up to 7-1/2 hp S-I 1.0 S-I 1.0 S-I 1.0

Over 7-1/2 hp S-I 1.5 S-I 2.5 S-I 2.5

Base Mounted Pumps

Up to 20 hp S-I 1.5 S-I 2.5 S-I 2.5

TABLE 1B

Class II Vibration Isolator Types and Minimum Static Deflection

(MSD, inches) for basements below grade and floor slabs on earth

Equipment Type (Note (1)) MSD

Reciprocating Air or Refrigeration Compressors

SECTION 22 05 48.01 20 Page 3

TABLE 1B

Class II Vibration Isolator Types and Minimum Static Deflection

(MSD, inches) for basements below grade and floor slabs on earth

Equipment Type (Note (1)) MSD

500 to 750 rpm S 1.0

751 rpm and up S 1.0

Pumps

Closed Coupled NP 0.25

Up to 7 1/2 hp NM 0.35

Over 7 1/2 hp S-I 1.0

Base Mounted

Up to 20 hp S-I 1.0

20 to 75 hp S-I 1.0

Over 75 hp S-I 1.0

Provide vibration isolators and seismic snubbers for mechanical and electrical machinery and associated piping and ductwork, to minimize transmission of vibrations and structure borne noise to the building structure or spaces or from the building structure to the machinery.

Comply with the following vibration schedule.

1.4.6 Machinery Airborne Sound Level Criteria

TABLE 2A

Sound Data Schedule

Equipment Maximum Sound Power Level (dB)

Octave Band Level Center Frequency (Hz)

63 125 250 500 1000 2000 4000 8000

Air Compressor 90 89 92 93 92 92 90 81

Pump 85 80 82 82 80 77 74 72

1.4.6.1 Basic Criteria

For each piece of machinery in the human work environment, do not exceed the maximum airborne sound levels 84 dB A-weighted scale, continuous or

SECTION 22 05 48.01 20 Page 4 intermittent, or 140 dB peak sound pressure-level, impact or impulse, noise.

1.4.6.2 Sound Data Schedule

TABLE 2A

Sound Data Schedule

Equipment Maximum Sound Power Level (dB)

Octave Band Level Center Frequency (Hz)

63 125 250 500 1000 2000 4000 8000

Air Compressor 90 89 92 93 92 92 90 81

Pump 85 80 82 82 80 77

1.4.7 Seismic Protection Criteria

Use a Horizontal Force Factor minimum 100 percent of the machinery weight considered passing through the machinery center of gravity in any horizontal direction. Unless vibration isolation is required to protect machinery against unacceptable structure transmitted noise or vibration, protect the structure or machinery from earthquakes by rigid structurally sound attachment to the load-supporting structure. Protect each piece of vibration-isolated machinery with protected spring isolators or separate seismic restraint devices. Determine by calculations the number and size of seismic restraints needed for each machinery. Verify seismic restraint vendor's calculations by a registered professional engineer. Provide seismic snubbers and protected spring isolators rated in three principle axes. Verify ratings by independent laboratory testing, by analysis of an independent licensed structural engineer, or by R-number ratings by California State.

1.4.8 Welding

AWS D1.1/D1.1M.

1.5 SUBMITTALS

Government approval is required for submittals with a "G" designation;

submittals not having a "G" designation are for information only.

Submittals with an "S" designation following the "G" are for inclusion in the Sustainability Notebook, in conformance to Section 01 33 29.01 00 SUSTAINABILITY REPORTING. Other designations following the "G" designation identify the office that will review the submittal for the Government. Submit the following in accordance with Section 01 33 00.01 00

SUBMITTAL PROCEDURES:

SD-02 Shop Drawings

Inertia Bases; G J

Machinery Bases; G J

SECTION 22 05 48.01 20 Page 5

SD-03 Product Data

Isolators; G J

Flexible Connectors

Pipe Guides

Vertical Stops

Thrust Restraints

Inertia Bases

Machinery Bases; G J

Machinery Foundations and Subbases

Machinery Manufacturer's Sound Data

SD-05 Design Data

Inertia Bases

Machinery Bases

Each Item of Machinery

Each Item of Machinery Over 300 Pounds; G JC

Submit design calculations for inertia bases, machinery bases, and saddles, either by the machinery manufacturer for the recommended machinery mounting or by the vibration-isolation equipment manufacturer.

SD-06 Test Reports

Protected Spring Isolators

Submit seismic protection rating in three principal axes certified by an independent laboratory or analyzed by an independent licensed structural engineer.

SD-08 Manufacturer's Instructions

Vibration and Noise Isolation Components

Seismic Protection Components

1.6 QUALITY ASSURANCE

1.6.1 Vibration Isolator Procurement

For each piece of machinery to be isolated from vibration, supply the vibration isolators, and other associated materials and equipment as a coordinated package by a single manufacturer or by the machinery manufacturer. Select isolators that provide uniform deflection even when machinery weight is not evenly distributed. This requirement does not

SECTION 22 05 48.01 20 Page 6 include the flexible connectors or the hangers for the associated piping and ductwork.

1.6.2 Unitized Machinery Assemblies

Mounting of unitized assemblies directly on vibration isolation springs is acceptable if machinery manufacturer certifies that the end supports of the assemblies have been designed for such installation.

PART 2 PRODUCTS

2.1 CORROSION PROTECTION FOR STEEL PARTS

ASTM A123/A123M or ASTM A653/A653M hot-dipped galvanized, or equivalent manufacturer standard coatings. Where steel parts are exposed to the weather, provide galvanized coating of at least 2 ounces of zinc per square foot of surface. Coat springs with neoprene.

2.2 NEOPRENE

ASTM D471 and ASTM D2240, Grade Durometer 40, 50, or 60, and oil resistant.

2.3 FLOOR-MOUNTED ISOLATORS

2.3.1 Neoprene Isolation Pads

Provide pads at least 1/4 inch thick with cross-ribbed or waffle design.

For concentrated loads, provide steel bearing plates bonded or cold cemented to the pads.

2.3.2 Neoprene Isolators

Provide molded neoprene isolators having steel base plates with mounting holes and, at the top, steel mounting plates with mounting holes or threaded inserts. Provide elements of type and size coded with molded letters or color-coded for capacity identification. Embed metal parts completely in neoprene.

2.4 SPRING ISOLATORS AND PROTECTED SPRING ISOLATORS

Provide spring isolators or protected spring isolators that are adjustable and laterally stable with free-standing springs of horizontal stiffness at minimum 80 percent of the vertical (axial) stiffness. For machine-attached and floor-attached restraining elements, separate from metal-to-metal contact by neoprene cushions 1/8 inch thick minimum. Provide neoprene acoustic friction pads at least 1/4 inch thick.

2.4.1 Springs

Provide springs with base and compression plates, to keep spring ends parallel during and after deflection to operating height. Provide outside coil diameters at least 0.8 of the operating height. At operating height, springs shall have additional travel to complete (solid) compression equal to at least 50 percent of the operating deflection.

2.4.2 Mounting and Adjustment

Provide base and compression plates with mounting holes or threaded fittings. Bolt leveling adjustment bolts to machinery or base.

SECTION 22 05 48.01 20 Page 7

2.5 SUSPENSION ISOLATORS

Provide hangers with suspension isolators encased in open steel brackets.

Isolate hanger rods from isolator steel brackets with neoprene-lined opening.

2.5.1 Suspension Neoprene Isolators

Provide double-deflection elements with minimum 3/8 inch deflection.

2.5.2 Suspension Spring Isolators

Provide hangers with springs and molded neoprene elements in series.

Provide isolators with adjustable spring-preloading devices where required to maintain constant pipe elevations during installation and when pipe operational loads are transferred to the springs.

2.6 MACHINERY BASES

ASTM A36/A36M and AISC 360.

2.7 INERTIA BASES

ASTM A36/A36M steel, ASTM C94/C94M ( 2,500 psi) concrete.

2.8 FLEXIBLE CONNECTORS FOR PIPING

Straight or elbow flexible connectors rated for temperatures, pressures, and fluids to be conveyed. Provide flexible connectors with the strength 4 times operating pressure at highest system operating temperature. Provide elbow flexible connectors with a permanently set angle.

AM#9... ...AM#9

2.8.1 Metal Flexible Connectors

Fabricated of Grade E phosphor bronze, monel or corrugated stainless steel tube covered with comparable bronze or stainless steel braid restraining and pressure cover.

2.9 PIPE GUIDES

Factory-fabricated. Weld steel bar guides to the pipe at a maximum radial spacing of 60 degrees. The outside diameter around the guide bars shall be smaller than the inside diameter of the guide sleeve in accordance with standard field construction practice. For pipe temperatures below 60 degrees F, provide metal sleeve, minimum one pound per cubic foot density insulation.

2.10 THRUST RESTRAINTS

Adjustable spring thrust restraints, able to resist the thrust force with at least 25 percent unused capacity. The operating spring deflection shall be not less than 50 percent of the static deflection of the isolation supporting the machinery.

SECTION 22 05 48.01 20 Page 8

2.11 SEISMIC PROTECTION COMPONENTS FOR PIPING

Section 23 03 00.01 20 BASIC MECHANICAL MATERIALS AND METHODS.

PART 3 EXECUTION

3.1 INSTALLATION

3.1.1 Vibration and Noise Isolation Components

Install vibration-and-noise isolation materials and equipment in accordance with machinery manufacturer's instructions.

3.1.2 Suspension Vibration Isolators

Provide suspension isolation hangers for piping, suspended equipment, and suspended equipment platforms in mechanical equipment rooms, as specified.

For operating load static deflections of 1/4 inch or less, provide neoprene pads or single deflection neoprene isolators. For operating load static deflections over 5/16 to 3/8 inch, provide double-deflection neoprene element isolators. For operating load static deflections over 3/8 inch, provide isolators with spring and neoprene elements in series.

3.1.3 Vertical Stops

For machinery affected by wind pressure or having an operational weight different from installed weight, provide resilient vertical limit stops which prevent spring extension when weight is removed. Provide vertical stops for machinery containing liquid, such as water chillers, evaporative coolers, boilers, and cooling towers. Spring isolated or protected spring isolated machinery must rock and move freely within limits of stops or seismic restraint devices.

3.1.4 Thrust Restraints

Where required, provide pairs of thrust restraints, symmetrically installed on both sides of the steady state line of thrust.

3.1.5 Flexible Pipe Connectors

Install flexible connectors in accordance with the manufacturer's instructions. When liquid pulsation dampening is required, flexible connectors with spherical configuration may be used. Provide restraints for pipe connectors at pumps to prevent connector failure upon pump startup.

3.1.6 Seismic Snubbers

Provide snubbers as close as possible to each vibration isolator as indicated. After installing and leveling of the machinery, adjust snubbers in accordance with the snubber manufacturer's instructions.

3.1.7 Machinery

Provide vibration isolators, flexible connectors and seismic snubbers in accordance with manufacturer's recommendations. Machinery with spring isolators or protected spring isolators shall rock or move freely within limits of stops or seismic snubber restraints.

SECTION 22 05 48.01 20 Page 9

3.1.7.1 Stability

Isolators shall be stable during starting and stopping of machinery without traverse and eccentric movement of machinery that would damage or adversely affect the machinery or attachments.

3.1.7.2 Lateral Motion

The installed vibration isolation system for each piece of floor or ceiling mounted machinery shall have a maximum lateral motion under machinery start up and shut down conditions of not more than 1/4 inch. Restrain motions in excess by approved spring mountings.

3.1.7.3 Unbalanced Machinery

Provide foundation suspension systems specifically designed to resist horizontal forces for machinery with large unbalanced horizontal forces.

Vibration isolator systems shall conform to the machinery manufacturer's recommendations.

3.1.7.4 Nonrotating Machinery

Mount nonrotating machinery in systems which includes rotating or vibrating machinery on isolators having the same deflection as the hangers and supports for the pipe connected to.

3.1.7.5 Unitized Machinery Assemblies

TABLE 3A

Vibration Isolator Types and Minimum Static Deflection

(MSD, inches) for 4-8 inch slab on grade and column supported.

Column Spacing Slab on earth and 0-30 feet

31-40 feet 41-50 feet

Equipment Type (Note (1))

MSD (Note (1))

Type (Note (1))

MSD (Note (1))

Type (Note (1))

MSD (Note (1))

Reciprocating Air or Refrigeration Compressors

500 to 750 rpm S-R 1.75 S-R 2.5 S-R 3.5

751 rpm and up S-R 1.5 S-R 2.5 S-R 3.5

Closed Coupled Pumps

Up to 7-1/2 hp S-I 1.0 S-I 1.0 S-I 1.0

SECTION 22 05 48.01 20 Page 10

TABLE 3A

Vibration Isolator Types and Minimum Static Deflection

(MSD, inches) for 4-8 inch slab on grade and column supported.

Column Spacing Slab on earth and 0-30 feet

31-40 feet 41-50 feet

Equipment Type (Note (1))

MSD (Note (1))

Type (Note (1))

MSD (Note (1))

Type (Note (1))

MSD (Note (1))

Over 7-1/2 hp S-I 1.5 S-I 2.5 S-I 2.5

NOTES:

(1) Equipment Vibration Isolation Schedule Designations (Hyphenated designations are combinations of the following:)

B - Welded structural steel bases.

H - Spring isolators (suspended equipment and piping). Where required, provide with adjustable preloading devices.

HR - Thrust restraints

I - Concrete inertia bases with steel forms.

NM - Neoprene mounts.

NP - Neoprene pads.

R - Structural steel rail for equipment mounts.

S - Freestanding spring isolators (floor-mounted equipment).

SV - Freestanding spring isolators (floor-mounted equipment).

SX - Freestanding spring isolators with adjustable cushioned vertical stops and cushioned horizontal stops (floor-mounted equipment. Protected spring isolators SX may be substituted wherever S or SV is specified and shall meet all requirements.

Unitized assemblies such as chillers with evaporator and condenser, and top mounted centrifugal compressor or unitized absorption refrigeration machines, structurally designed with end supports, may be mounted on steel rails and springs in lieu of steel bases and springs. Where the slab or deck is less than 4 inches thick, provide spring isolation units with the deflection double that of the vibration isolation schedule, up to a maximum static deflection of 5 inches.

SECTION 22 05 48.01 20 Page 11

3.1.7.6 Roof and Upper Floor Mounted Machinery

TABLE 3A

Vibration Isolator Types and Minimum Static Deflection

(MSD, inches) for 4-8 inch slab on grade and column supported.

Column Spacing

Slab on earth and 0-30 feet

31-40 feet 41-50 feet

Equipment Type (Note (1))

MSD (Note (1))

Type (Note (1))

MSD (Note (1))

Type (Note (1))

MSD (Note (1))

Reciprocating Air or Refrigeration Compressors

500 to 750 rpm

S-R 1.75 S-R 2.5 S-R 3.5

751 rpm and up

S-R 1.5 S-R 2.5 S-R 3.5

Closed Coupled Pumps

Up to 7-1/2 hp

S-I 1.0 S-I 1.0 S-I 1.0

Over 7-1/2 hp

S-I 1.5 S-I 2.5 S-I 2.5

NOTES:

(1) Equipment Vibration Isolation Schedule Designations (Hyphenated designations are combinations of the following:)

B - Welded structural steel bases.

H - Spring isolators (suspended equipment and piping). Where required, provide with adjustable preloading devices.

HR - Thrust restraints

I - Concrete inertia bases with steel forms.

NM - Neoprene mounts.

NP - Neoprene pads.

R - Structural steel rail for equipment mounts.

S - Freestanding spring isolators (floor-mounted equipment).

SV - Freestanding spring isolators (floor-mounted equipment).

SECTION 22 05 48.01 20 Page 12

TABLE 3A

Vibration Isolator Types and Minimum Static Deflection

(MSD, inches) for 4-8 inch slab on grade and column supported.

Column Spacing

Slab on earth and 0-30 feet

31-40 feet 41-50 feet

Equipment Type (Note (1))

MSD (Note (1))

Type (Note (1))

MSD (Note (1))

Type (Note (1))

MSD (Note (1))

SX - Freestanding spring isolators with adjustable cushioned vertical stops and cushioned horizontal stops (floor-mounted equipment. Protected spring isolators SX may be substituted wherever S or SV is specified and shall meet all requirements.

TABLE 3B

Class II Vibration Isolator Types and Minimum Static Deflection

(MSD, inches) for basements below grade and floor slabs on earth

Equipment Type (Note (1)) MSD

Reciprocating Air or Refrigeration Compressors

500 to 750 rpm S 1.0

751 rpm and up S 1.0

Pumps

Closed Coupled NP 0.25

Up to 7 1/2 hp NM 0.35

Over 7 1/2 hp S-I 1.0

AM#7...Rotary Air Compressor

Up to 200 hp NP 0.25"...AM#7

NOTES: Note (1) and Note (2) are same as for TABLE 3A.

On the roof or upper floors, mount machinery on isolators with vertical stops. Rest isolators on beams or structures designed and installed in accordance with the SMACNA 1793, Plate 61.

3.1.8 Piping

Provide vibration isolation for piping. AM#7... ...AM#7 The isolator deflections shall be equal to or greater than the static deflection of the vibration isolators provided for the connected machinery as follows:

SECTION 22 05 48.01 20 Page 13

3.1.8.1 Piping Connected to Vibration Isolated Machinery

For a distance of 50 feet or 50 pipe diameters, whichever is greater.

3.1.8.2 Condenser Water

For the full length of the piping.

3.1.8.3 Hot, and Dual Temperature Piping

For risers from pumps and for the first 20 feet of the branch connection of the main supply and return piping at each floor.

3.1.9 Water Piping Application

Resiliently support piping with combination spring and neoprene isolation hangers. Provide spring elements with 5/8 inch static deflection; install the hanger with spacing so that the first harmonic natural frequency is not less than 360 Hz. Provide double-deflection neoprene elements. For the first two isolation hangers from the rotating equipment of 3 1/2 inch and smaller piping systems, ensure a deflection equal to the equipment-isolation static deflection. For the first four piping isolation hanger supports from rotating equipment of 4 inch and larger piping systems, use resilient hanger-rod isolators at a fixed elevation regardless of load changes. Incorporate an adjustable preloading device to transfer the load to the spring element within the hanger mounting after the piping system has been filled with water.

3.1.10 Pipe Hanger and Support Installation

3.1.10.1 Pipe Hangers

Provide eye-bolts or swivel joints for pipe hangers to permit pipe thermal or mechanical movement without angular misalignment of hanger vibration isolator.

3.1.10.2 Valves

Provide vibration isolation hangers and supports at modulating, pressure reducing, or control valves which will induce fluid pulsations. When required or indicated, isolate valves with flexible connectors.

3.1.10.3 Machinery Without Flexible Connections

When piping is not connected to vibrating machinery with flexible connectors, provide the first four hangers with isolation elements designed for deflections equal to equipment vibration isolator deflections (including static, operating, and start-up).

3.1.10.4 Pipe Risers

Provide pipe riser supports with bearing plates and two layers of 1/4 inch thick ribbed or waffled neoprene pad loaded to not more than 50 psi.

Separate isolation pads with 1/4 inch steel plate. Weld pipe riser clamps at anchor points to the pipe and to pairs of vertical acoustical pipe anchor mountings which shall be rigidly fastened to the steel framing.

SECTION 22 05 48.01 20 Page 14

3.1.10.5 Supports at Base of Pipe Risers

Piping isolation supports at the base of risers shall be two layers of 1/2 inch thick heavy-duty neoprene pad separated by 1/4 inch thick steel plate. Use bearing plates sized to provide a pad loading of not more than 500 psi. Weld the stanchion between the pipe and isolation support to the pipe and weld or bolt to the isolation support. Bolt isolation support to the floor slab with resilient sleeves and washers. Where supplementary steel is required to support piping, provide a maximum deflection of 0.08 inches at the mid-span of this steel under the load. Rigidly support piping from the supplementary steel with the supplementary steel isolated from the building structure with isolators.

3.1.10.6 Pipe Anchors

Attach each end of the pipe anchor to an omni-directional pipe isolator which in turn shall be rigidly fastened to the steel framing or structural concrete. Provide a telescoping pipe isolator of two sizes of steel tubing separated by a minimum 1/2 inch thick pad of heavy-duty neoprene or heavy-duty neoprene and canvas. Provide vertical restraints by similar material to prevent vertical travel in either direction. The load on the isolation material shall not exceed 500 psi.

3.1.11 Equipment Room Sound Isolation

Do not allow direct contact between pipe or ducts and walls, floor slabs, roofs, ceilings or partitions of equipment rooms.

3.1.11.1 Pipe Penetrations

Provide galvanized Schedule 40 pipe sleeves and tightly pack annular space between sleeves and pipe with insulation having a flame spread rating not more than 25 and a smoke developed rating not more than 50 when tested in accordance with ASTM E84, maximum effective temperature 1000 degrees F, bulk density 6 pounds/cu. ft. minimum. Provide uninsulated pipe with a one inch thick mineral fiber sleeve the full length of the penetration and seal each end with an interior or exterior and weather resistant non-hardening compound. Provide sealant and mineral-fiber sleeve of a flame spread rating not more than 25 and a smoke developed rating not more than 50 when tested in accordance with ASTM E84.

3.1.12 Machinery Foundations and Subbases

Provide cast in place anchor bolts as recommended by the machinery manufacturer.

3.1.12.1 Common Machinery Foundations

Mount electrical motors on the same foundations as driven machinery.

Support piping connections, strainers, valves, and risers on the same foundation as the pumps.

3.1.12.2 Foundation and Subbase Concrete

Cast concrete foundations and subbases of ASTM C94/C94M 2500 psi concrete reinforced with steel bars as indicated or recommended by machinery manufacturer.

SECTION 22 05 48.01 20 Page 15

3.1.12.3 Anchor Bolts and Grout

Secure machinery to foundations and inertia bases with anchor bolts. Grout equipment with baseplates, the full area under baseplates with premixed non-shrinking grout. After grout has set, remove wedges, shims, and jack bolts and fill spaces with grout.

3.1.13 Inertia Bases

Install inertia bases in accordance with the recommendations of the machinery manufacturer or inertia base manufacturer, as applicable.

3.1.14 Seismic Restraints for Piping

Provide seismic restraints in accordance with SMACNA 1981.

3.1.15 Suspended Machinery Platforms

Provide with vibration-isolation hangers.

3.1.16 Electrical Connections

Provide flexible conduit or multiple conductor cable connections for machinery with sufficient extra length to permit 2 inch minimum displacement in any direction without damage.

3.1.17 Systems Not To Be Vibration Isolated

Do not provide vibration isolation for electrical raceways and conduits or for fire protection, storm, sanitary, and domestic water piping systems which do not include pumps or other vibrating, rotating, or pulsating equipment including control and pressure reducing valves.

3.2 FIELD QUALITY CONTROL

Provide equipment and apparatus required for performing inspections and tests. Notify Contracting Officer 14 days prior to machinery testing.

Rebalance, adjust, or replace machinery with noise or vibration levels in excess of those given in the machinery specifications, or machinery manufacturer's data.

3.2.1 Field Inspections

Prior to initial operation, inspect the vibration isolators and seismic snubbers for conformance to drawings, specifications, and manufacturer's data and instructions. Check for vibration and noise transmission through connections, piping, ductwork, foundations, and walls. Check connector alignment before and after filling of system and during operation. Correct misalignment without damage to connector and in accordance with manufacturer's recommendations.

3.2.2 Spring Isolator Inspection

After installation of spring isolators or protected spring isolators, and seismic restraint devices, the machinery shall rock freely on its spring isolators within limits of stops or seismic restraint devices. Eliminate or correct interferences.

SECTION 22 05 48.01 20 Page 16

3.2.3 Tests

Adjust, repair, or replace isolators as required to reduce vibration and noise transmissions to specified levels.

-- End of Section --

SECTION 22 05 48.01 20 Page 17