Attachment O - Section 13 48 73 SEISMIC CONTROL FOR NON-STRUCTURAL.pdf

P131 Communications Center eProjects No.: 1615269 NSA Souda Bay, Greece

SECTION 13 48 73

SEISMIC CONTROL FOR NON-STRUCTURAL COMPONENTS

05/ 20, CHG 1: 08/ 20

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 325 (2017) Steel Construction Manual

AMERICAN SOCIETY OF CIVIL ENGINEERS (ASCE)

ASCE 7-16 (2017; Errata 2018; Supp 1 2018) Minimum Design Loads and Associated Criteria for Buildings and Other Structures

AMERICAN WATER WORKS ASSOCIATION (AWWA)

AWWA C105/A21.5 (2010) Polyethylene Encasement for Ductile-Iron Pipe Systems

AWWA C116/A21.16 (2015) Protective Fusion-Bonded Coatings for the Interior and Exterior Surfaces of Ductile-Iron and Gray Iron Fittings

AWWA C153/A21.53 (2011) Ductile-Iron Compact Fittings for Water Service

AWWA C213 (2015) Fusion-Bonded Epoxy Coating for the Interior and Exterior of Steel Water Pipelines

ASTM INTERNATIONAL (ASTM)

ASTM A36/A36M (2019) Standard Specification for Carbon Structural Steel

ASTM A53/A53M (2020) Standard Specification for Pipe, Steel, Black and Hot-Dipped, Zinc-Coated, Welded and Seamless

ASTM A153/A153M (2016a) Standard Specification for Zinc Coating (Hot-Dip) on Iron and Steel Hardware

ASTM A500/A500M (2020) Standard Specification for Cold-Formed Welded and Seamless Carbon Steel Structural Tubing in Rounds and Shapes

SECTION 13 48 73 Page 1 14 September 2021

ASTM A563 (2015) Standard Specification for Carbon and Alloy Steel Nuts

ASTM A603 (2019) Standard Specification for Zinc-Coated Steel Structural Wire Rope

ASTM D1785 (2015; E 2018) Standard Specification for Poly(Vinyl Chloride) (PVC), Plastic Pipe, Schedules 40, 80, and 120

ASTM D2665 (2014) Standard Specification for Poly(Vinyl Chloride) (PVC) Plastic Drain, Waste, and Vent Pipe and Fittings

ASTM E488/E488M (2015) Standard Test Methods for Strength of Anchors in Concrete and Masonry Elements

ASTM E580/E580M (2017) Standard Practice for Installation of Ceiling Suspension Systems for Acoustical Tile and Lay-in Panels in Areas Subject to Earthquake Ground Motions

ASTM F891 (2016) Standard Specification for Coextruded Poly (Vinyl Chloride) (PVC) Plastic Pipe with a Cellular Core

ASTM F1554 (2018) Standard Specification for Anchor Bolts, Steel, 36, 55, and 105-ksi Yield Strength

EUROPEAN COMMITTEE FOR STANDARDIZATION (CEN/CENELEC)

EN 545 (2010) Ductile iron pipes, fittings, accessories and their joints for water pipelines. Requirements and test methods

EN 10264-1 (2012) Steel wire and wire products - Steel wire for ropes - Part 1: General requirements

EN 12385-1 (2002+A1:2008) Steel wire ropes - Safety - Part 1: General requirements

EN 12385-10 (2003+A1:2008) Steel wire ropes - Safety - Part 10: Spiral ropes for general structural applications

EN 14628-1 (2020) Ductile iron pipes, fittings and accessories - Requirements and test methods - Part 1: PE coatings

EN 14901-1 (2014+A1:2019) Ductile iron pipes, fittings and accessories - Requirements and test methods for organic coatings of ductile iron fittings and accessories - Part 1: Epoxy coating (heavy duty)

EN 15189 (2006) Ductile iron pipes, fittings and accessories - External polyurethane

SECTION 13 48 73 Page 2 coating for pipes - Requirements and test methods

EN ISO 3506-2 (2020) Fasteners - Mechanical properties of corrosion-resistant stainless steel fasteners - Part 2: Nuts with specified grades and property classes

EUROCODE 3 EN 1993 Design of Steel Structures

EUROCODE 8 EN 1998 Design of structures for earthquake resistance

FEDERAL EMERGENCY MANAGEMENT AGENCY (FEMA)

FEMA P-414 (January 2004) Installing Seismic Restraints for Duct and Pipe

HELLENIC ORGANIZATION FOR STANDARDIZATION (ELOT)(ELOT EN)

ELOT 496 Steel tubes – Wall thickness

ELOT 497 Steel tubes – Outside diameters

ELOT 541 Steel tubes – Tolerance systems

ELOT TS 1501-04-01-02-00 Building piping systems under pressure with seamless steel tubes

ELOT TS 1501-04-01-06-00 Building piping system under pressure with seamless, galvanized steel tudes

ICC EVALUATION SERVICE, INC. (ICC-ES)

ICC ES AC156 (2012) Acceptable Criteria for Seismic Certification by Shake-Table Testing of Nonstructural Components

ICC-ES AC23 (2012; R 2016) Acceptance Criteria for Sprayed Fire-resistant Materials (SFRMs), Intumescent Fire-resistant Coatings and Mastic Fire-resistant Coatings Used to Protect Structural Steel Members

INTERNATIONAL ORGANIZATION FOR STANDARDIZATION (ISO)

ISO 898-1 (2013) Mechanical Properties of Fasteners Made of Carbon Steel and Alloy Steel — Part 1: Bolts, Screws and Studs with Specified Property Classes — Coarse Thread and Fine Pitch Thread

ISO 1461 (2009) Hot dip galvanized coatings on fabricated iron and steel articles — Specifications and test methods

ISO 2531 (2009) Ductile iron pipes, fittings, accessories and their joints for water applications

SECTION 13 48 73 Page 3

ISO 7378 (1983) Fasteners -- Bolts, screws and studs -- Split pin holes and wire holes

ISO 7411 High-strength Structural Bolts

ISO 8180 (2020) Ductile iron pipelines -- Polyethylene sleeving for site application

ISO 18468 (2017) Ductile iron fittings, accessories and their joints and valves -- Epoxy coating

SHEET METAL AND AIR CONDITIONING CONTRACTORS' NATIONAL ASSOCIATION

(SMACNA)

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

U.S. DEPARTMENT OF DEFENSE (DOD)

UFC 3-301-01 (2019) Structural Engineering

UFC 3-301-02 (2020) Design of Risk Category V Structures, National Strategic Military Assets

UFC 4-010-01 (2018) DoD Minimum Antiterrorism Standards for Buildings

VIBRATION ISOLATION AND SEISMIC CONTROL MANUFACTURERS ASSOCIATION

(VISCMA)

VISCMA 412 (2014) Installing Seismic Restraints for Mechanical Equipment

1.2 SYSTEM DESCRIPTION

1.2.1 General Requirements

Apply the requirements for seismic protection measures, described in this section and on the drawings, for the equipment and systems listed below, in accordance with UFC 3-301-01 , ASCE 7-16 or relevant EUROCODES and additional data furnished by the Contracting Officer. Provide seismic protection measures in addition to any other requirements called for in other documents. Where there is a conflict between the specifications and the drawings, the specifications will take precedence. Accomplish resistance to lateral forces induced by earthquakes without consideration of friction resulting from gravity loads.

1.2.1.1 Miscellaneous Equipment and Systems

Provide bracing and attachment for the following miscellaneous equipment and components in accordance with the requirements of this specification.

SECTION 13 48 73 Page 4

1.2.1.1.1 Miscellaneous Equipment/Components with Ip = 1.5 (Designated Seismic System)

Storage Cabinets Storage Racks Signs and Billboards Shelving Furnishings Partitions Suspended Ceilings

And are in or associated with the following critical rooms:

125 N6 Equipment Room 126 Demarc 2

132 UPS

134 UPS

133 Elec 141 Demarc 1

143 TRG-1

237 Network Dist Area

238 TR1-1

308 N9 Equipment Room 338 Fleet Cyber-Equip

341 TR2-1

Corridors 110, 201, 301 Stairs 1, 2 Generator Building

Bracing and attachments for all Designated Seismic Systems shall be designed and provided by the Contractor in accordance with UFC 3-301-01 and ASCE 7-16 using an Importance Factor, Ip, equal to 1.5. Alternative rel evant Eurocodes may be used with a building importance factor of 1.4.

The Designated Seismic Systems shall have special certifications per UFC 3-301-01 . Active mechanical and electrical equipment that are part of a designated seismic system must be certified by the manufacturer in accordance with UFC 3-301-01 Section 3-6.2. The equipment must be qualified by shake table testing.

1.2.1.1.2 Miscellaneous Equipment/Components with Ip = 1.0

All other systems which do not have an Ip = 1.5 with the following exceptions:

a. Furniture, except storage cabinets and steel shelving.

b. Temporary or moveable equipment.

1.2.1.2 Mechanical Equipment and Systems

Provide bracing and attachment for the following mechanical equipment and systems in accordance with the requirements of this specification.

1.2.1.2.1 Mechanical Equipment and Systems with Ip = 1.5 (Designated Seismic System)

Domestic Water:

BP- 1,2

SECTION 13 48 73 Page 5

Chilled Water System:

CH- 01,02

CWP- 01,02

Computer Room Air Conditioning:

CRAC- 03A,03B,04A,04B,05A,05B,06A,06B,09A,09B,10A,10B

CU- 03A,03B,04A,04B,05A,05B,06A,06B,09A,09B,10A,10B

Computer Room Air Handling Units:

CRAHU- 01A,01B,08A,08B,08C,08D

Direct Expansion Fan Coil Units:

DXFCU- 01A,01B,02A,02B,03A,03B,04A,04B

CU- 07A,07B,11A,11B

Fuel Oil Pumps & Control Exhaust Fans:

EF- 03,04,08,18,19,20

All of the associated appurtenances (piping, equipment, ductwork, pumps, etc)for the systems listed above are also considered Designated Seismic Systems with an Ip=1.5.

Bracing and attachments for all Designated Seismic Systems shall be designed and provided by the Contractor in accordance with UFC 3-301-01 and ASCE 7-16 using an Importance Factor, Ip, equal to 1.5. Alternative relevant Eurocodes may be used with a building importance factor of 1.4.

The Designated Seismic Systems shall have special certifications per UFC 3-301-01. Active mechanical and electrical equipment that are part of a designated seismic system must be certified by the manufacturer in accordance with UFC 3-301-01 Section 3-6.2. The equipment must be qualified by shake table testing.

1.2.1.2.2 Mechanical Equipment/Components with Ip = 1.0

All other mechanical equipment and systems which do not have an Ip = 1.5

1.2.1.3 Electrical Equipment and Systems

Provide bracing and attachment for the following electrical equipment and systems developed by the A-E in accordance with the requirements of this specification.

1.2.1.3.1 Electrical Equipment with Ip = 1.5 (Designated Seismic System)

Panel Boards:

Panels 1EPA,2EPA,3EPA,1EPB,2EPB,3EPB,GEN,1EL,2EL,3EL Panels 1TRA,1TRB,2TRA,2TRB,3TRA,3TRB

CP- DB-A,DB-B, N6A,N6B,N9A,N9B,FLTA,FLTB,D1A,D1B

HVAC Control Panels Switchgear:

MSG-A, MSG-B

Unit Substations Transformers Generators Uninterruptible Power Supply:

UPS- A,B (including batteries and bypass) Lighting in the following critical rooms:

125 N6 Equipment Room 126 Demarc 2

132 UPS

SECTION 13 48 73 Page 6

134 UPS

133 Elec 141 Demarc 1

143 TRG-1

237 Network Dist Area

238 TR1-1

308 N9 Equipment Room 338 Fleet Cyber-Equip

341 TR2-1

Corridors 110, 201, 301 Stairs 1, 2 Generator Building

Bracing and attachments for all Designated Seismic Systems shall be designed and provided by the Contractor in accordance with UFC 3-301-01 and ASCE 7-16 using an Importance Factor, Ip, equal to 1.5. Alternative relevant Eurocodes may be used with a building importance factor of 1.4.

The Designated Seismic Systems shall have special certifications per UFC 3-301-01. Active mechanical and electrical equipment that are part of a designated seismic system must be certified by the manufacturer in accordance with UFC 3-301-01 Section 3-6.2. The equipment must be qualified by shake table testing.

1.2.1.3.2 Electrical Equipment/Components with Ip = 1.0

All other electrical equipment and systems which do not have an Ip = 1.5

1.2.2 Contractor Designed Bracing

Submit copies of the design calculations with the drawings. Calculations must be approved, certified, stamped and signed by a registered Professional Structural Engineer. Calculations must verify the capability of structural members to which bracing is attached for carrying the load from the brace. Design the bracing in accordance with UFC 3-301-01 , ASCE 7-16 , UFC 4-010-01 or relevant EUROCODES and additional data furnished by the Contracting Officer. Resistance to lateral forces induced by earthquakes must be accomplished without consideration of friction resulting from gravity loads. UFC 3-301-01 uses parameters for the building, not for the equipment in the building; therefore, corresponding adjustments to the formulas must be required. Loadings determined using UFC 3-301-01 are based on strength design; therefore, AISC 325 or EUROCODE 3 EN 1993 Specifications must be used for the design. The bracing and attachment for all equipment and systems must be developed by the Contractor.

1.3 SUBMITTALS

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

submittals not having a "G" designation are for Contractor Quality Control approval. Submittals with an "S" are for inclusion in the Sustainability eNotebook, in conformance to Section 01 33 29 SUSTAINABILITY REPORTING.

When shown in this specification, detailed shop drawings for all required equipment, piping and ductwork with calculations certified by a registered structural engineer will be provided. Submit the following in accordance with Section 01 33 00 SUBMITTAL PROCEDURES:

SD-02 Shop Drawings

SECTION 13 48 73 Page 7

Bracing; G

Resilient Vibration Isolation Devices; G

Equipment Requirements; G

DSS plan drawings; G

Name Plate Drawings; G

SD-03 Product Data

Couplings and Bracing; G

Equipment Requirements; G

Flexible Couplings or Joints; G

Anchor Bolts; G

Vibration Isolators; G

Snubbers; G

SD-05 Design Data

Design Calculations; G

SD-06 Test Reports

Anchor Bolts; G

SD-07 Certificates

ICC ES AC156 Shake Table Test; G

PART 2 PRODUCTS

2.1 EQUIPMENT REQUIREMENTS

Submit detail drawings of bracing along with calculations, catalog cuts, templates, and erection and installation details, as appropriate, for every piece of equipment and system. Label the equipment and systems on plan drawings and details or otherwise identify on the plan where each proposed component and equipment support will be installed, including the locations of name plate installation. Indicate thickness, type, grade, class of metal, and dimensions; and show construction details, reinforcement, anchorage, and installation with relation to the building construction. Provide calculations and drawings that are stamped by a registered structural engineer, and that verify the capability of structural members to which bracing is attached for carrying the load from the brace. Design must be based on actual equipment and system layout.

Design must include calculated dead loads, static seismic loads and capacity of materials utilized for the connection of the equipment or system to the structure. Analysis must detail anchoring methods.

Equipment must be rigidly or flexibly mounted as indicated in the specifications and/or drawings depending on vibration isolation requirements as follows below. Roof mounted equipment both vibration

SECTION 13 48 73 Page 8 isolated and non-isolated, must have support members designed and anchored to building structural concrete as required for seismic restraint and wind loads.

2.1.1 Rigidly (Base and Suspended) Mounted Equipment

Equipment furnished under this contract must be rigidly mounted using cast-in-place anchor bolts to anchor them or post-installed anchors that are qualified for earthquake loading in accordance with EUROCODE 8 EN 1998 and EUROCODE 3 EN 1993. Anchor bolts must conform to ASTM F1554-07ae1 or ISO 7411 , ISO 898-1 , ISO 7378 . For any rigid equipment which is rigidly anchored, provide flexible joints for piping, electrical conduit, etc., that are capable of accommodating displacements equal to the full width of the joint in both orthogonal directions. Suspended equipment bracing attachments should be located just above the center of gravity to minimize swinging. Designated Seismic Systems (DSS) needed for continued operation after an earthquake must have two nuts provided on each anchor bolt.

2.1.2 Nonrigid or Flexibly-Mounted Equipment

Where the need for vibration isolation devices is determined based on the magnitude of the design seismic forces or is indicated on the Drawings, select anchor bolts for vibration isolation devices and/or snubbers for equipment base and foundations that follow the same procedure as in paragraph ANCHOR BOLTS, except use an equipment weight equal to five times the actual equipment weight.

2.2 BOLTS AND NUTS

Hex head bolts, and heavy hexagon nuts must be ISO 7411 , ISO 898-1 or EN ISO 3506-2 nuts. Provide bolts and nuts galvanized in accordance with ASTM A153/A153M or ISO 1461 when used underground or exposed to weather.

2.3 FLEXIBLE JOINTS

Flexible joints must have same pressure and temperature ratings as adjoining pipe. Braided hoses must not be used where there is torsional or axial movement unless the manufacturer allows it.

2.3.1 Braided Hose Expansion Joint

Braided hose expansion joints must be installed in the locations indicated on the drawings and as required to accommodate any thermal expansion, contraction or seismic movement of the piping system. Joints must consist of two parallel sections of corrugated metal hose, compatible braid, and 180 degree return bend with inlet and outlet connections. Field fabricated loops are not acceptable. Braided hose expansion joints must be installed in the locations indicated on the drawings and as required to accommodate any thermal expansion, contraction or seismic movement of the piping system. Braided hose in a 60 degree flexible V loop arrangement must be used for small diameter pipe connections to coils in variable-air-volume (VAV)terminal units and fan coil units installed in suspended ductwork whether braced or unbraced.

All braided hose expansion joints must be manufactured in accordance with the documented manufacturers weld procedure specifications. The procedure qualification record must be used to document the execution of this procedure and must follow the general "guidelines" of ASME Section IX.

Each individual welder must conform to the in-house procedure

SECTION 13 48 73 Page 9 qualification record and be qualified prior to each production lot. The testing of each individual welder must be documented in a welding procedure qualification record.

2.3.1.1 Corrugated Hose

Corrugated hose must be Type 304, 316 stainless steel or bronze.

Braid must be Type 304 stainless steel for any series 300 stainless steel hose or bronze for any bronze hose. Fittings materials of construction and end fitting type must be consistent with pipe material and equipment/ pipe connection fittings. Copper fittings must not be attached to stainless steel hose.

2.3.1.2 Flexible Hose Expansion Loops

Flexible hose expansion loops must have a factory supplied, hanger / support lug located at the bottom of the 180 degree return. Flexible hose expansion loops must be rated with an operating pressure which is the same as the adjoining pipe. The operating pressure must be based on burst pressure with a 4 to 1 safety factor.

2.3.2 Double Ball Flexible Expansion Joint

Install flexible expansion joints manufactured of ductile iron conforming to the material requirements of ASTM A563 and AWWA C153/A21.53 or equivalent EN 545 , ISO 2531 in the locations indicated on the drawings.

Provide foundry certification of material upon request. Each flexible expansion joint must be pressure tested prior to shipment against its own restraint to a minimum of 2.4 MPa (1.7 MPa for flexible expansion joints 50 mm and 760 mm diameter and larger). A minimum 2:1 safety factor, determined from the published pressure rating, must apply. Factory Mutual Approval for the 50 mm through 300 mm sizes is required. Each flexible expansion joint must consist of an expansion joint designed and cast as an integral part of a ball and socket type flexible joint, having a minimum per ball deflection of: 20 degrees, 50 mm - 300 mm; 15 degrees, 350 mm - 900 mm; 12 degrees, 1070 mm - 1220 mm and 100 mm minimum expansion.

Additional expansion sleeves must be available and easily added or removed at the factory or in the field. Both standardized mechanical joint and flange end connections must be available.

2.3.2.1 Internal Surfaces

Line all internal surfaces (wetted parts) with a minimum of 15 mils of fusion bonded epoxy conforming to the applicable requirements of AWWA C213.

Sealing gaskets must be constructed of EPDM. The coating must meet

NSF/ANSI 61.

2.3.2.2 Exterior Surfaces

Coat exterior surfaces with a minimum of 6 mils of fusion bonded epoxy conforming to the applicable requirements of AWWA C116/A21.16 or equivalent EN 14901-1 , ISO 18468 , EN 14628-1 . Include appropriately sized polyethylene sleeves, meeting AWWA C105/A21.5 or equivalent ISO 8180 , EN 15189 , EN 14628-1 , for direct buried applications.

2.3.3 Double Ball Flexible Expansion Joint Gravity Drain (Non-Pressurized)

Flexible expansion joints gravity drain must be installed in the locations indicated on the drawings and must be manufactured of pvc. All

SECTION 13 48 73 Page 10 connections whether solvent weld or mechanical must be restrained to allow movement to be transferred to expansion joint. Each ball must allow up to 15 degrees deflection.

End connection outside diameters must be compatible with ASTM D1785, ASTM D2665 and ASTM F891 PVC pipe and are to be solvent welded.

2.4 LIGHTING FIXTURES

Lighting fixtures and supports must conform to the requirements of

UFC 3-301-01 .

2.4.1 Recessed Fluorescent Fixtures

Recessed fluorescent individual or continuous-row mounted fixtures shall be supported by a seismic-resistant suspended ceiling support system built in accordance with ASTM E580/E580M , Section 09 51 00 ACOUSTICAL CEILINGS.

Seismic protection for the fixtures shall conform to the requirements of UFC 3-301-01 . Recessed lighting fixtures not over 25 kg in weight may be supported by and attached directly to the ceiling system runners using screws or bolts, number and size as required by the seismic design.

Fixture accessories, including louvers, diffusers, and lenses shall have lock or screw attachments.

2.4.2 Surface-Mounted Fluorescent Fixtures

Surface-mounted fluorescent individual or continuous-row fixtures shall be attached to a seismic-resistant ceiling support system built in accordance with ASTM E580/E580M , Section 09 51 00 ACOUSTICAL CEILINGS.

2.4.3 Assembly Mounted on Outlet Box

A supporting assembly, that is intended to be mounted on an outlet box, shall be designed to accommodate mounting features on 100 mm boxes, plaster rings, and fixture studs.

2.5 SWAY BRACING

Material used for members listed in this section and on the drawings, must be structural steel conforming with the following:

a. Plates, rods, and rolled shapes, ASTM A36/A36M or equivalent shapes per EUROCODE 3 EN 1993.

b. Wire rope, ASTM A603 or equivalent EN 12385-10 , EN 10264-1 , EN 12385-1 .

c. Tubes, ASTM A500/A500M , Grade C or equivalent ELOT 496 , ELOT 497 , ELOT 541 , ELOT TS 1501-04-01-02-00 .

d. Pipes, ASTM A53/A53M or equivalent ELOT TS 1501-04-01-06-00 , Grade B.

e. Angles and Channels, ASTM A36/A36M or equivalent shapes per

EUROCODE 3 EN 1993.

PART 3 EXECUTION

3.1 COUPLINGS AND BRACING

a. Submit detail drawings, as specified here and throughout this

SECTION 13 48 73 Page 11 specification, along with catalog cuts, templates, and erection and installation details, as appropriate, for the items listed.

Submittals must be complete in detail; must indicate thickness, type, grade, class of metal, and dimensions; and must show construction details, reinforcement, anchorage, and installation with relation to the building construction.

b. Provide coupling installation conforming to the details shown on the drawings. Provisions of this paragraph apply to all piping within a

1.5 m line around outside of building unless buried in the ground.

Piping grouped for support on trapeze-type hangers must be braced at the most frequent interval as determined by applying the requirements of this specification to each piping run on the common support.

c. Size bracing components as required for the total load carried by the common supports. Bracing rigidly attached to pipe flanges, or similar, must not be used where it would interfere with thermal expansion of piping.

d. Adjust isolators and restraints after piping systems has been filled and equipment is at its operating weight, following the manufacturer's written instructions.

e. Install cables at a 45-degree slope. Where interference is present, the slope may be minimum of 30 degrees or a maximum of 60 degrees per

VISCMA 412 .

3.2 BUILDING DRIFT

Provide joints capable of accommodating seismic displacements for vertical piping between floors of the building or where rigidly supported pipes connect to equipment with vibration isolators. For threaded piping, provide swing joints made of the same piping material. For piping with manufactured ball joints the seismic drift must be 0.015 meters per meter of height above the base where the seismic separation occurs; this drift value must be used in place of the expansion given in the manufacturer's selection table.

Do not attach sway braces for equipment to two dissimilar structural elements of a building that may respond differentially during an earthquake unless a flexible joint is provided. Bracing must be capable of accommodating building drift due to seismic displacements.

3.3 FLEXIBLE COUPLINGS OR JOINTS

3.3.1 Building Piping

Provide flexible couplings or joints in building piping at bottom of all pipe risers for pipe larger than 90 mm in diameter. Laterally brace flexible couplings or joints without interfering with the action of the flexible coupling or joint. Cast iron waste and vent piping need only comply with these provisions when caulked joints are used. Flexible bell and spigot pipe joints using rubber gaskets may be used at each branch adjacent to tees and elbows for underground waste piping inside of building to satisfy these requirements.

3.3.2 Underground Piping

Install flexible coupling in underground piping and 100 mm or larger

SECTION 13 48 73 Page 12 conduit, except heat distribution system, where the piping enters the building. Provide couplings that accommodate 50 mm of relative movement between the pipe and the building in any direction. Provide additional flexible couplings where shown on the drawings.

3.4 PIPE SLEEVES

Size pipe sleeves in interior non-fire rated walls as indicated on the drawings to provide clearances that will permit differential movement of piping without the piping striking the pipe sleeve. Pipe sleeves in fire rated walls must conform to the requirements in Section 07 84 00

FIRESTOPPING.

3.5 SPREADERS

Provide spreaders between adjacent piping runs to prevent contact during seismic activity whenever pipe or insulated pipe surfaces are less than 100 mm apart. Apply spreaders at same interval as sway braces at an equal distance between the sway braces. If rack type hangers are used where the pipes are restrained from contact by mounting to the rack, spreaders are not required for pipes mounted in the rack. Apply spreaders to surface of bare pipe and over insulation on insulated pipes utilizing high-density inserts and pipe protection shields in accordance with the requirements of Section 23 07 00 THERMAL INSULATION FOR MECHANICAL SYSTEMS.

3.6 EQUIPMENT SWAY BRACING

3.6.1 Miscellaneous Suspended Equipment

Provide equipment sway bracing for items supported from floor, overhead floor or roof structural systems. Provide braces that consist of angles, rods, wire rope, bars, channels (struts) or pipes arranged as shown in bracing submittals and secured at both ends with not less than 13 mm bolts. Provide sufficient braces for equipment to resist a horizontal force as specified in UFC 3-301-01 without exceeding safe working stress of bracing components. Provide, for approval, specific force calculations in accordance with UFC 3-301-01 for the equipment in the project. Submit details of equipment bracing for acceptance. In lieu of bracing with vertical supports, these items may be supported with hangers inclined at 45 degrees directed up and radially away from equipment and oriented symmetrically in 90-degree intervals on the horizontal plane, bisecting the angles of each corner of the equipment, provided that supporting members are properly sized to support operating weight of equipment when hangers are inclined at a 45-degree angle.

3.6.2 Piping and Electrical Conduit

Provide sway braces to prevent movement of the pipes and electrical conduit under seismic loading. Provide braces in both the longitudinal and transverse directions, relative to the axis of the pipe or conduit.

Provide sufficient braces for equipment to resist a horizontal force as specified in UFC 3-301-01 without exceeding safe working stress of bracing components. Provide bracing that does not interfere with thermal expansion requirements for the pipes as described in other sections of these specifications. For seismic analysis of horizontal pipes and conduits, the equivalent static force should be considered to act concurrently with the full dead load of the pipe or conduit, including contents.

SECTION 13 48 73 Page 13

3.6.2.1 Transverse Sway Bracing

Provide transverse sway bracing for steel and copper. All runs (length of pipe between end joints) must have a minimum of transverse bracing at each end. Provide transverse sway bracing for pipes of materials other than steel and copper at intervals not to exceed the hanger spacing as specified in Section 22 00 00 PLUMBING, GENERAL PURPOSE.

3.6.2.2 Longitudinal Sway Bracing

Provide longitudinal sway bracing at 12 m intervals unless otherwise indicated. All runs (length of pipe between end joints) must have one longitudinal brace minimum. Do not use branch lines, walls, or floors as sway braces.

3.6.2.3 Vertical Runs

Run is defined as length of pipe between end joints. Brace vertical runs of piping no more than 3 m vertical intervals. Braces for vertical runs must be above the center of gravity of the segment being braced. Flexible couplings should be provided at the bottoms of risers for pipes larger than 90 mm in diameter. Flexible couplings and expansion joints should be braced laterally and longitudinally unless such bracing would interfere with the action of the couplings or joints. When pipes enter buildings, flexible couplings should be provided to allow for relative movement between the soil and building. Construct all sway braces in accordance with the drawings. Attach sway braces to the structural system. Do not connect to branch lines, walls, or floors.

3.6.2.4 Clamps and Hangers

Apply clamps or hangers on uninsulated pipes directly to pipe. Insulated piping must have clamps or hangers applied over insulation in accordance with Section 23 07 00 THERMAL INSULATION FOR MECHANICAL SYSTEMS. Hanger rod stiffener angle or channel bracing must be securely attached by a series of attachment clamps manufactured from a one piece metal stamping and must include all required attachment hardware and locking nuts.

Attachment clamps made from aluminum or cast iron must not be used in seismic applications. Do not weld vertical braces to hanger rods.

3.6.3 Ducts

3.6.3.1 Braced Ducts

Provide bracing details and spacing for rectangular and round ducts in accordance with SMACNA 1981. However, the design seismic loadings for these items must not be less than loadings obtained using the procedures in UFC 3-301-01 . Bracing must not attach to duct joints. Use shortest screws possible when penetrating ductwork to minimize airflow noise inside duct.

3.6.3.2 Unbraced Ducts

Attach hangers for unbraced ducts to the duct within 50 mm of the top of the duct with a minimum of two #10 sheet metal screws in accordance with FEMA P-414 4. Use shortest screws possible when penetrating ductwork to minimize airflow noise inside duct. Install unbraced ducts with a 150 mm minimum clearance to vertical ceiling hanger wires.

SECTION 13 48 73 Page 14

3.7 EQUIPMENT CONTROLS

Ensure that controls for critical equipment that must remain operational after an earthquake are certified per paragraph SPECIAL TESTING FOR SEISMIC-RESISTING EQUIPMENT and are served by emergency power as required.

3.8 RESILIENT VIBRATION ISOLATION DEVICES

Where the need for these devices is determined based on the magnitude of the design seismic forces, select anchor bolts for vibration isolation devices and/or snubbers for equipment base and foundations that follow the same procedure as in paragraph ANCHOR BOLTS, except use an equipment weight equal to five times the actual equipment weight.

3.8.1 Spring-Type Vibration Devices

Select vibration isolation devices so that the maximum movement of equipment from the static deflection point is 13 mm. Equipment flexibly mounted on vibration isolators must have a bumper restraint or snubber in each horizontal direction and vertical restraints must be provided where required to resist overturning. Isolator housing and restraints must be constructed of ductile materials. A viscoelastic pad or similar material of appropriate thickness must be used between the bumper and components to limit the impact load. Restraints must be designed to resist the calculated horizontal lateral and vertical forces.

Spring vibration isolators must be seismically rated, restrained isolators for equipment subject to load variations and large external forces. The seismically rated housing must be sized to meet or exceed the force requirements applicable to the project and meet the required isolation criteria. Spring vibration isolator manufacturers will be a member of

VISCMA.

The design force Fp for vibration isolators must be doubled where maximum movement of equipment from static deflection point is greater than 6 mm as specified in ASCE 7-16 , Table 13.6-1, footnote b.

3.8.2 Multidirectional Seismic Snubbers

Install multidirectional seismic snubbers employing elastomeric pads on floor- or slab-mounted equipment and large piping. Use snubbers that provide 6 mm free vertical and horizontal movement from the static deflection point. Provide snubber medium consisting of multiple pads of cotton duct and neoprene or other suitable materials arranged around a flanged steel trunnion so both horizontal and vertical forces are resisted by the snubber medium.

The design force Fp for vibration isolators must be doubled where maximum movement of equipment from static deflection point is greater than 6 mm as specified in ASCE 7-16 , Table 13.6-1, footnote b.

3.9 FLOOR OR PAD MOUNTED EQUIPMENT

3.9.1 General

Ensure housekeeping pads have adequate space to mount equipment and seismic restraint devices allowing adequate edge distance and embedment depth for restraint anchor bolts. Identify position of reinforcing steel and other embedded items prior to drilling holes for anchors. Do not

SECTION 13 48 73 Page 15 drill holes in concrete until concrete has achieved full design strength.

Install neoprene grommet washers or till the gap with epoxy on equipment anchor bolts where clearance between anchor and equipment support hole exceeds 3 mm.

3.9.2 Shear Resistance

Bolt to the floor, floor mounted equipment. Provide the number and installation of bolts to resist shear forces in accordance with paragraph

ANCHOR BOLTS.

3.9.3 Overturning Resistance

Use the ratio of the overturning moment from seismic forces to the resisting moment due to gravity loads to determine if overturning forces need to be considered in the sizing of anchor bolts. Provide calculations to verify the adequacy of the anchor bolts for combined shear and overturning.

3.10 ANCHOR BOLTS

3.10.1 General

Submit copies of test results to verify the adequacy of the specific anchor and application, as specified.

3.10.2 Cast-In-Place

Where equipment foundations and anchor bolts are shown on the Drawings for pad-mounted or floor-mounted equipment, confirm all foundation sizes and anchor bolt dimeters, quantities, locations and edge distances are sufficient for the actual equipment. If the calculated seismic forces cause the a net uplift, the anchor bolts must be designed for combined shear and tension.

Use templates to locate cast-in-place bolts accurately and securely in formwork. Provide anchor bolts with an embedded straight length equal to at least 12 times nominal diameter of the bolt. Anchor bolts that exceed the normal depth of equipment foundation piers or pads must either extend into concrete floor or the foundation must be increased in depth to accommodate bolt lengths. Use templates to locate cast-in-place bolts accurately and securely in formwork.

3.10.3 Drilled-In Anchor Bolts

Drill holes with rotary impact hammer drills. Drill bits must be of diameters as specified by the anchor manufacturer. Unless otherwise shown on the drawings, all holes must be drilled perpendicular to the concrete surface. Where anchors are permitted to be installed in cored holes, use core bits with matched tolerances as specified by the manufacturer.

Properly clean cored hole per manufacturer's instructions. Identify position of reinforcing steel and other embedded items prior to drilling holes for anchors. Exercise care in coring or drilling to avoid damaging existing reinforcing or embedded items. Notify the Contracting Officer if reinforcing steel or other embedded items are encountered during drilling. Take precautions as necessary to avoid damaging electrical and telecommunications conduit and gas lines. Unless otherwise specified, do not drill holes in concrete until it has achieved full design strength.

Perform anchor installation in accordance with manufacturer instructions.

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For Wedge Anchors, Heavy-Duty Sleeve Anchors, and Undercut Anchors, protect threads from damage during anchor installation. Heavy-duty sleeve anchors must be installed with sleeve fully engaged in part to be fastened. Set anchors to manufacturer's recommended torque, using a torque wrench. Following attainment of 10 percent of the specified torque, 100 percent of the specified torque must be reached within 7 or fewer complete turns of the nut. If the specified torque is not achieved within the required number of turns, the anchor must be removed and replaced unless otherwise directed by the Contracting Officer.

For Cartridge Injection Adhesive Anchors where approved for seismic application, clean all holes per manufacturer instructions to remove loose material and drilling dust prior to installation of adhesive. Inject adhesive into holes proceeding from the bottom of the hole and progressing toward the surface in such a manner as to avoid introduction of air pockets in the adhesive. Follow manufacturer recommendations to ensure proper mixing of adhesive components. Sufficient adhesive must be injected in the hole to ensure that the annular gap is filled to the surface. Remove excess adhesive from the surface. Shim anchors with suitable device to center the anchor in the hole. Do not disturb or load anchors before manufacturer specified cure time has elapsed. Observe manufacturer recommendations with respect to installation temperatures for cartridge injection adhesive anchors.

3.10.4 Anchor Bolt Testing

Test in place expansion and chemically bonded anchors not more than 24 hours after installation of the anchor, conducted by an independent testing agency; testing must be performed on random anchor bolts as described below.

3.10.4.1 Torque Wrench Testing

Perform torque wrench testing on not less than 25 percent of the total installed expansion anchors and at least one anchor for every piece of equipment containing more than two anchors. The test torque must equal the minimum required installation torque as required by the bolt manufacturer. Calibrate torque wrenches at the beginning of each day the torque tests are performed. Recalibrate torque wrenches for each bolt diameter whenever tests are run on bolts of various diameters. Apply torque between 20 and 100 percent of wrench capacity. Reach the test torque within one half turn of the nut, except for 9 mm sleeve anchors which must reach their torque by one quarter turn of the nut. If any anchor fails the test, test similar anchors not previously tested until 20 consecutive anchors pass. Failed anchors must be retightened and retested to the specified torque; if the anchor still fails the test it must be replaced.

3.10.4.2 Pullout Testing

Test expansion and chemically bonded anchors by applying a pullout load using a hydraulic ram attached to the anchor bolt. Testing must be done in accordance with ASTM E488/E488M or ICC-ES AC23 . At least 5 percent of the anchors, but not less than 3 per day must be tested. Apply the load to the anchor without removing the nut; when that is not possible, the nut must be removed and a threaded coupler must be installed of the same tightness as the original nut. Check the test setup to verify that the anchor is not restrained from withdrawing by the baseplate, the test fixture, or any other fixtures. The support for the testing apparatus

SECTION 13 48 73 Page 17 must be at least 1.5 times the embedment length away from the bolt being tested. Load each tested anchor to 1 times the design tension value for the anchor. The anchor must have no observable movement at the test load. If any anchor fails the test, similar anchors not previously tested must be tested until 10 consecutive anchors pass. Failed anchors must be retightened and retested to the specified load; if the anchor still fails the test it must be replaced.

3.11 SPECIAL REQUIREMENTS FOR DESIGNATED SEISMIC SYSTEMS AND COMPONENTS

Reference items identified as designated seismic systems and components above.

3.11.1 DSS Plan Drawings

Include DSS plan drawings for Designated Seismic System (DSS) Equipment layout, indicating the equipment location in the facility sufficient to be used for the government review and contractor installation. These drawings will also be used by the walk down special inspector and the final walk down inspector, identified in Specification 01 45 35 Special Inspections and the Statement of Special Inspections. The Drawings must include a method of identification to delineate each system clearly. For example, DSS1, DSS2, etc. Show the proposed supports on the plan and reference where details of these supports can be found for ease of review and installation.

3.11.2 Testing, Certification, and Documentation

Equipment and components (including controls) identified as Designated Seismic Systems required to remain operational after an earthquake will be seismic qualified by shake table testing conforming to ICC ES AC156 Shake Table Test procedures. The manufacturer is to provide a certification by a fully qualified testing agency for the specific equipment and/or components. Prequalified certifications are acceptable unless noted otherwise. Seismic component qualification documentation for each piece of equipment must contain the information required in UFC 3-301-02 , Section 2-17.2.5 Component Qualification Documentation.

Submit certifications and create an "Equipment Certification Documentation" file Per UFC 3-301-01, section 13.2.2.1. This file will be used by the periodic walk-down special inspector (per Specification 01 45 35 Special Inspections ) and the final walk-down inspector (per the schedule of special inspections) to verify compliance. This will also be used in the Operation and Maintenance Manual. The final walk-down inspector will request this file prior to final walk down inspection.

3.11.3 Component Identification Nameplates

Equipment and components (including controls) identified as Designated Seismic Systems must include a nameplate per UFC 3-301-01, section 13.2.2.2.

Provide name plate drawings of proposed name plate for review and fabrication. Include name plate locations for each specific piece of certified equipment and component in the shop drawing submittal.

3.12 SPECIAL INSPECTION FOR SEISMIC-RESISTING SYSTEMS AND EQUIPMENT

As specified in Section 01 45 35 SPECIAL INSPECTIONS.

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1.2.2 Contractor Designed Bracing

1.3 SUBMITTALS

2.3.3 Double Ball Flexible Expansion Joint Gravity Drain Non-Pressurized

2.5 SWAY BRACING

3.12 SPECIAL INSPECTION FOR SEISMIC-RESISTING SYSTEMS AND EQUIPMENT