Q26 - 13 05 41 - SEISMIC RESTRAINT REQUIREMENTS FOR NON-STRUCTURAL COMPONENTS.pdf

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SEISMIC RESTRAINT REQUIREMENTS

FOR NON-STRUCTURAL COMPONENTS

SECTION 13 05 41

SEISMIC RESTRAINT REQUIREMENTS FOR NON-STRUCTURAL COMPONENTS

PART 1 - GENERAL

1.1 DESCRIPTION

A. Provide seismic restraint in accordance with the requirements of this section in order to maintain the integrity of nonstructural components of the building so that they remain safe and functional in case of seismic event.

B. The design of seismic restraints of non-structural components to resist seismic load shall be based on Seismic Design parameters indicated below in accordance with VA H-18-8 in conjunction with ASCE 7, as specified in H-18-8 Section 4.0, for existing building retrofit projects. Specific requirements for Critical and Essential facilities are covered in Section 4.0 of H-18-8, including applying Ip = 1.5 for all nonstructural components in Critical facilities.

1. International Building Code 2021 Edition

2. American Society of Civil Engineers Minimum Design Loads and Associated Criteria for Buildings and Other Structures (ASCE 7)

3. Facility Occupancy Category per VA H-18-8: Critical Facility

4. Site Class: C

5. Building Risk Category: III

6. Mapped MCER 0.2 s period Spectral Response Acceleration Parameter (Ss): 0.247 g

7. Mapped MCER 1.0 s period Spectral Response Acceleration Parameter (S1): 0.124 g

8. Short period Spectral Response Acceleration Parameter (Sds):

0.214 g

9. Short period Spectral Response Acceleration Parameter (Sd1):

0.124 g

10. Building Seismic Design Category: C

11. Component Importance Factor (Ip): 1.5

12. Component Response Modification Factor (Rp): Varies, per ASCE 7-16 Chapter 13

13. Component Overstrength Factor: Varies, per ASCE 7-16 Chapter

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C. Definitions: Non-structural building components are components or systems that are not part of the building’s structural system whether inside or outside, above or below grade. Non-structural components of buildings include but are not limited to (Refer to VA H-18-8 and ASCE 7 for additional examples):

1. Architectural Elements: glazing, nonbearing partitions, suspended ceilings, cabinets, bookshelves, medical equipment, and storage racks, etc.

2. Electrical Elements: Power systems, lighting systems, switchgear and switchboards, transfer switches, motor generators, selector and controller panels, fire protection and alarm systems, special life support systems, and telephone and communication systems, etc.

3. Mechanical Elements: Heating, ventilating, and air-conditioning systems and plumbing systems, etc.

4. Fire Protection Elements: Sprinkler systems and inert agent fire suppression systems, etc.

1.2 RELATED WORK

A. Related specifications include but are not limited to those shown below. Coordinate all work with the applicable specification for that work.

B. Section 05 50 00, METAL FABRICATIONS

C. Section 21 13 13, WET-PIPE SPRINKER SYSTEMS

E. Section 21 22 00, CLEAN AGENT FIRE SUPPRESSION SYSTEMS

F. Section 22 11 00, FACILITY WATER DISTRIBUTION

G. Section 22 13 00, FACILITY SANITARY AND VENT PIPING

H. Section 22 14 00, FACILITY STORM DRAINAGE

I. Section 23 10 00, FACILITY FUEL SYSTEMS

J. Section 23 21 13, HYDRONIC PIPING

K. Section 23 31 00, HVAC DUCTS AND CASINGS

L. Section 26 51 00, INTERIOR LIGHTING

1.3 QUALITY CONTROL

A. Shop-Drawing Preparation:

1. Non-structural seismic restraint systems shop drawings and delegated design calculations shall be prepared by a professional structural engineer with a minimum of 5 years’ experience in the design and detailing of seismic force restraints. The professional structural engineer shall be

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2. Submit design tables and information used for the design-force levels, stamped and signed by a professional structural engineer registered in the State where project is located.

B. Coordination:

1. Do not install seismic restraints until seismic restraint submittals are approved by the COR.

2. Coordinate trapezes or other multi-pipe hanger systems prior to submission of shop drawings for review.

C. Seismic Certification:

1. In structures assigned to Seismic Design Category C, D, E, or F, permanent equipment and components are to have Special Seismic Certification in accordance with requirements of section 13.2.2 of ASCE 7 except for equipment and components that are considered inherently rugged as listed in Section

4.2.2 of VA H18-8, and shall comply with section 13.2.6 of

ASCE 7.

1.4 SUBMITTALS

A. Submit a complete and coordinated set of bracing and signed and sealed anchorage drawings and calculations for all non-structural elements requiring seismic restraint by the delegated professional structural engineer mentioned in Section 1.3.A.1 for review prior to installation including:

1. Description, layout, and location of all items to be anchored or braced with anchorage or brace points noted and dimensioned.

2. Details of all anchorage and bracing at large scale with all members, parts brackets shown, together with all connections, bolts, welds etc. clearly identified and specified. Details shall be coordinated with all project conditions and trades prior to shop drawing submission for review.

3. Complete calculations including but not limited to seismic design criteria, computer model input and output, seismic design forces and capacities, design tables and information used for all proprietary design elements such as post installed anchors, stamped and signed by a professional structural engineer specified in section 1.3 A.1.

4. For all post installed anchorages submit the appropriate International Code Council Engineering Service (ICC-ES)

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5. Delegated professional structural engineer qualifications.

B. Submit for review prior to installation, the following for seismic protection of piping in addition to items noted in Section 1.4.A:

1. Single-line piping diagrams on a floor-by-floor basis. Show all suspended piping for a given floor on the same plain.

2. Type of pipe (Copper, steel, cast iron, insulated, non-insulated, etc.).

3. Pipe contents.

4. Structural framing for the seismic and gravity support and the main superstructure for which the bracing and or anchorage is attached.

5. Location of all gravity load pipe supports and spacing requirements.

6. Numerical value of gravity load reactions.

7. Location of all seismic bracing.

8. Numerical value of applied seismic brace loads.

9. Type of connection (Vertical support, vertical support with seismic brace etc.).

10. Seismic brace reaction type (tension or compression):

Details illustrating all support and bracing components, methods of connections, and specific anchors to be used.

C. Submit for review prior to installation, the following items for seismic protection of suspended ductwork and suspended electrical and communication cables, in addition to items noted in Section 1.4.A:

1. Details illustrating all support and bracing components, methods of connection, and specific anchors to be used.

2. Numerical value of applied gravity and seismic loads and seismic loads acting on support and bracing components.

3. Maximum spacing of hangers and bracing.

1.5 APPLICABLE PUBLICATIONS

A. The Publications listed below (including amendments, addenda revisions, supplements and errata) form a part of this

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B. American Concrete Institute (ACI):

1. 355.2-19 Qualification for Post-Installed Mechanical Anchors in Concrete and Commentary

C. American Institute of Steel Construction (AISC):

1. Load and Resistance Factor Design, Volume 1, Second Edition

D. ASTM International (ASTM):

1. A36/A36M-19 Standard Specification for Carbon Structural Steel

2. A53/A53M-18 Standard Specification for Pipe, Steel, Black and Hot-Dipped, Zinc-Coated, Welded and Seamless

3. A307-14e1 Standard Specification for Carbon Steel Bolts and Studs; 60,000 PSI Tensile Strength.

4. A325-14 Standard Specification for Structural Bolts, Steel, Heat Treated, 120/105 ksi Minimum Tensile Strength

5. A325M-14 Standard Specification for High-Strength Bolts for Structural Steel Joints [Metric]

6. A490-14a Standard Specification for Heat-Treated Steel Structural Bolts, 150 ksi Minimum Tensile Strength

7. A490M-14a Standard Specification for High-Strength Steel Bolts, Classes 10.9 and 10.9.3, for Structural Steel Joints [Metric]

8. A500/A500M-18 Standard Specification for Cold-Formed Welded and Seamless Carbon Steel Structural Tubing in Rounds and Shapes

9. A501/A501M-14 Standard Specification for Hot-Formed Welded and Seamless Carbon Steel Structural Tubing

10. A615/A615M-20 Standard Specification for Deformed and Plain Carbon-Steel Bars for Concrete Reinforcement

11. A992/A992M-15 Standard Specification for Steel for Structural Shapes for Use in Building Framing

12. A996/A996M-16 Standard Specification for Rail-Steel and Axle-Steel Deformed Bars for Concrete Reinforcement

13. E488-18 Standard Test Methods for Strength of Anchors in Concrete Elements

E. American Society of Civil Engineers: (ASCE 7) Latest Edition.

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1. ASCE 7 Minimum Design Loads and Associated Criteria for Buildings and Other Structures

F. National Fire Protection Association (NFPA):

1. 13-2021 Standard for the Installation of Sprinkler Systems.

G. National Uniform Seismic Installation Guidelines (NUSIG)

H. International Code Council (ICC):

1. IBC-2021 International Building Code

I. Sheet Metal and Air Conditioning Contractors National Association (SMACNA):

1. Seismic Restraint Manual - Guidelines for Mechanical Systems, 2008 Edition and Addendum

J. US Department of Veterans Affairs (VA):

1. H-18-8-2021 Seismic Design Requirements

1.6 REGULATORY REQUIREMENT

A. IBC as shown in Section 1.1 B of this specification.

B. Exceptions: The omission of seismic restraints shall be allowed only in accordance with VA H-18-8 and ASCE 7.

C. For fire sprinkler systems, refer to NFPA requirements and Division 21 specifications.

PART 2 - PRODUCTS

2.1 STEEL:

A. Structural Steel: ASTM A36, A36M, or A992.

B. Structural Tubing: ASTM A500, Grade B.

C. Structural Tubing: ASTM A501.

D. Steel Pipe: ASTM A53/A53M, Grade B.

E. Bolts & Nuts: ASTM A307, A325, A325M, A490, or A490M.

2.2 CAST-IN-PLACE CONCRETE

A. Concrete: 28 day strength, f’c = 20.7 MPa (3,000 psi), 27.5 MPa (4,000 psi), or 34.5 MPa (5,000 psi)

B. Reinforcing Steel: ASTM A615/615M or ASTM A996/A996M deformed.

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PART 3 - EXECUTION

3.1 CONSTRUCTION, GENERAL

A. Provide equipment supports and anchoring devices to withstand the seismic design forces, so that when seismic design forces are applied, the equipment cannot displace, overturn, or become inoperable.

B. Provide anchorages in conformance with recommendations of the equipment manufacturer and as shown on approved shop drawings and calculations.

C. Construct seismic restraints and anchorage to allow for thermal expansion.

D. Testing Before Final Inspection:

1. Test 10-percent of anchors in masonry and concrete per ASTM E488, and ACI 355.2 to determine that they meet the required load capacity. If any anchor fails to meet the required load, test the next 20 consecutive anchors, which are required to have zero failure, before resuming the 10-percent testing frequency.

2. Before scheduling Final Inspection, submit a report on this testing indicating the number and location of testing, and what anchor-loads were obtained.

3. Construct seismic restraints and anchorages to not interfere with other trades or damage existing or in-situ elements of the constructed building.

3.2 EQUIPMENT RESTRAINT AND BRACING

A. All mechanical and other equipment not supported with isolators external to the unit shall be securely anchored to the structure. Such equipment shall be properly supported to resist a horizontal force of 50 percent of the weight of the equipment furnished.

B. All mechanical and other equipment mounted on vibration isolators shall be provided with seismic restraints capable of resisting a horizontal force of 100 percent of the weight of the equipment furnished.

3.3 MECHANICAL DUCTWORK AND PIPING, ELECTRICAL BUSWAYS, CONDUITS, AND

CABLE TRAYS, AND TELECOMMUNICATION WIRES AND CABLE TRAYS

A. Support and brace the following item(s) to resist directional forces (lateral, longitudinal and vertical).

1. Mechanical ductwork and piping.

2. Electrical busways, conduits, and cable trays.

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3. Telecommunications wires and cable trays.

B. Provide supports and anchoring so that, upon application of seismic forces, piping remains fully connected as operable systems which will not displace sufficiently to damage adjacent or connecting equipment, or building members.

C. Piping Connections: Provide flexible connections where pipes connect to equipment. Make the connections capable of accommodating relative differential movements between the pipe and equipment under conditions of earthquake shaking.

3.4 PARTITIONS

A. In buildings with flexible structural frames, anchor partitions to only structural element, such as a floor slab, and separate such partition by a physical gap from all other structural elements.

B. Properly anchor masonry walls to the structure for restraint, so as to carry lateral loads imposed due to earthquake along with their own weight and other lateral forces.

3.5 CEILINGS AND LIGHTING FIXTURES

A. At intervals required to meet the seismic demand forces, laterally brace suspended ceilings against lateral and vertical movements, and provide with a physical separation at the walls.

B. Independently support and laterally brace all lighting fixtures.

Refer to applicable portion of lighting specification, Section

26 51 00, INTERIOR LIGHTING.

3.6 FACADES AND GLAZING

A. Do not install concrete masonry unit filler walls in a manner that can restrain the lateral deflection of the building frame.

Provide a gap with adequately sized resilient filler to separate the structural frame from the non-structural filler wall.

B. Tie brick veneers to a separate wall that is independent of the steel frame as shown on construction drawings to ensure strength against applicable seismic forces at the project location.

C. Install attachments to structure for all façade materials as shown on construction drawings to ensure strength against applicable seismic forces at the project location.

3.7 STORAGE RACKS, CABINETS, AND BOOKCASES

A. Install storage racks to withstand earthquake forces and anchored to the floor or laterally braced from the top to the structural elements.

B. Anchor medical supply cabinets to the floor or walls and equip them with properly engaged, lockable latches.

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C. Anchor filing cabinets that are more than 2 drawers high to the floor or walls, and equip all drawers with properly engaged, lockable latches.

D. Anchor bookcases that are more than 30 inches high to the floor or walls, and equip any doors with properly engaged, lockable latches.

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