13 48 00.00 26 Am-0002.pdf

Switchyard Disconnect Switch Replacement Oahe Dam OAA2

SECTION TABLE OF CONTENTS

DIVISION 13 - SPECIAL CONSTRUCTION

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SEISMIC RESTRAINT FOR MECHANICAL AND ELECTRICAL EQUIPMENT

PART 1 GENERAL

1.1 SCOPE OF WORK

1.2 REFERENCES

1.3 SUBMITTALS

1.4 DESIGN OF SEISMIC RESTRAINT

1.4.1 General Requirements

1.4.2 Code Requirements for Equipment Restraint

1.4.3 Requirements for Equipment Certification

1.5 EQUIPMENT

PART 2 PRODUCTS

PART 3 EXECUTION

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Am-0002

SECTION 13 48 00.00 26

SEISMIC RESTRAINT FOR MECHANICAL AND ELECTRICAL EQUIPMENT

PART 1 GENERAL

1.1 SCOPE OF WORK

The work covered in this section consists of furnishing all labor, equipment and materials to select, design, and provide seismic restraints for new switches provided as part of work performed for Oahe Dam.

1.2 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 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

INSTITUTE OF ELECTRICAL AND ELECTRONICS ENGINEERS (IEEE)

IEEE 693 (2018) Recommended Practice for Seismic Design of Substations

1.3 SUBMITTALS

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

submittals not having a "G" designation are for information only or as otherwise designated. When used, a designation following the "G" designation identifies the office that will review the submittal for the Government. Submit the following in accordance with SECTION 01 33 00

SUBMITTAL PROCEDURES:

SD-02 Shop Drawings

Detail Drawings; G, HDC

SD-03 Product Data

Seismic Equipment Certification; G, HDC

SD-05 Design Data

Structural Design Calculations for Seismic Restraints; G, HDC

1.4 DESIGN OF SEISMIC RESTRAINT

1.4.1 General Requirements

Apply the requirements for seismic protection measures described in this section to the equipment and systems below. Accomplish resistance to lateral forces induced by earthquakes without consideration of friction

SECTION 13 48 00.00 26 Page 2 resulting from gravity loads. Existing concrete strength is taken as f'c = 3,000 pounds per square inch (psi).

Submit detail drawings as per paragraphs "EQUIPMENT" and "SYSTEMS" within 90 calendar days prior to installation. Submit together with Structural Design Calculations for Seismic Restraints.

For detail drawings include catalog cuts, templates, anchorage system including mechanical specifications of anchor bolts, erection and installation details for the items listed. Provide submittals complete in detail; indicate thickness, type, grade, class of metal, and dimensions;

and show construction details, anchorage, and installation. Stamp all drawings with the Professional Engineer (PE) stamp who performs and stamps the calculations required above.

Submit structural design calculations performed by a qualified civil or structural engineer who is presently a registered professional engineers (PE). The calculations verify the capability of the seismic restraints and of structural members to which seismic restraint are attached for carrying the seismic design loads. The design includes seismic anchorage design and details. Provide all calculations stamped and signed by a PE.

1.4.2 Code Requirements for Equipment Restraint

Complete seismic design for all equipment restraint in accordance with Chapter 13, "Seismic Design Requirements for Nonstructural Components," of ASCE 7-16 with the seismic design force computed as per Section 13.3 "Seismic Demands on Nonstructural Components" at minimum. For electrical equipment restraint, design in accordance with the applicable provisions in IEEE 693 , or Section 13.3 of ASCE 7-16 whichever produces the more adverse seismic effects. For ASCE 7-16 , use a spectral acceleration S DS = 0.113, I P = 1.50, and z/h=1. For IEEE 693 , use a seismic qualification level of *Am-2 moderate low **Am-2 .

1.4.3 Requirements for Equipment Certification

Design, construct, and assemble all equipment listed in paragraph "Equipment", to be provided under this contract to withstand the seismic forces specified in paragraph "Code Requirements for Equipment Restraint." Provide Seismic Equipment Certification supported by testing or analysis stating the seismic capability of the equipment.

1.5 EQUIPMENT

Develop the structural design calculations for seismic restraints and detail drawings for mounting the following new equipment provided under this contract to existing structures in accordance with the requirements of this specification:

(a) Electrical Switches

PART 2 PRODUCTS

NOT USED

PART 3 EXECUTION

NOT USED

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