Structural Steel Specification - Paine Substation

TO: Steel Fabricators

FROM: City of Idaho Falls Power

DATE: November 2020

SUBJECT: Bid Invitation for Structural Steel for the Paine Substation

Bidders:

Idaho Fall Power requests your Sealed Bid for the structural steel structures for the Paine Substation. Attached here are technical specifications and the following specification drawings:

Drawing No. Title Qty.

SS-01 Structural Steel – Plan View

SS-02 Sht. 1-3 161kV A-Frame Line Deadend w/ Switch – DE1

1

SS-03 Sht. 1-3 46kV A-Frame Breaker Bypass Deadend w/ Switches – DE2

1

SS-04 161kV 1Ф Low Bus Support – BS1 12


SS-06 161kV 3Ф High Bus Switch Stand – BS3 2

SS-07 161kV 3Ф Low Bus Switch Stand – SS1 4

SS-08 161kV 3Ф High Bus Switch Stand – SS2 2

SS-09 Sht. 1-3 15kV H-Frame Breaker Bypass w/ Switches – BB1

1

SS-10 Sht. 1-5 15kV Distribution Structure – DS1 1

SS-11 15kV Termination Structure – TS1 4

SS-12 Static Mast – Direct Embed – SM1 2

SS-13 5’x4’ Ground Platform – SP1 22


SS-13 Steel Details – Anchor Bolts & Templates Lot

Bids shall include delivery as follows:

Steel delivery shall be F.O.B. job site. The Paine Substation site is located four miles northwest of the City of Idaho Falls on North River Road. The substation address is 6210 North River Road, Idaho Falls, ID 83402. Steel delivery shall be made on or before Monday, June 14, 2021. If this delivery date is unobtainable, then please state with your bid when the earliest delivery date to the project site can be met.

Anchor bolt delivery shall be made F.O.B. job site. Latest acceptable delivery date for anchor bolts is Monday, May 17, 2021.

Two (2) full size hard copy sets, or an electronic set, of approval drawings, as described in the written specifications, are required three weeks after receipt of order.

Four (4) full size hard copy sets of construction drawings, and parts lists are to be sent to the Owner, per the written specification, no later than one week prior to steel shipment.

Please submit your Sealed Bid to:

IF-21-13 Paine Substation Steel BidCity of Idaho FallsC/o Lisa Lathouris, Purchasing AgentPO Box 50220Idaho Falls, ID 83405

Sealed Bid must be marked with expected steel delivery dates. Sealed Bid must be received by December 21, 2020 by 11:00 A.M. MST. Bid shall be marked“IF-21-13 Paine Substation Steel”

Please direct any questions regarding this request to Richard Malloy (208-612-8428 or to the Engineer, Chris Wallace (406-651-6647). Sincerely,

Richard Malloy City of Idaho Falls Engineering Manager

Enclosure(s)

SPECIFICATION

FOR

PAINE SUBSTATION

STRUCTURAL STEEL

IDAHO FALLS POWER IDAHO FALLS, ID

NOVEMBER 2020

Prepared by: HDR Engineering, Inc. 970 S. 29th St. W Billings, MT 59102-7444

Page 2 of 9

Table of Contents

Requirements .................................................................................... 3

1.1 General ................................................................................................... 3

1.2 Definition of Terms ................................................................................. 3

Engineer Designed Structures ......................................................... 4

2.1 Owner Supplied Drawings ...................................................................... 4

2.2 Materials ................................................................................................. 4

2.3 Codes and Standards ............................................................................. 5

2.4 Fabrication .............................................................................................. 5

2.5 Shop Assembly ....................................................................................... 6

2.6 Galvanizing ............................................................................................. 6

2.7 Marking ................................................................................................... 7

2.8 Delivery and Shipment............................................................................ 7

2.9 Structural Steel Shop Drawings .............................................................. 7

Shop Drawings Submittals ............................................................... 8

Appendix B – Vicinity Map ................... Error! Bookmark not defined.

Page 3 of 9

REQUIREMENTS

1.1 GENERAL

These specifications cover materials, fabrication, hot dip galvanizing after fabrication, inspection, and delivery of complete standard shape steel structures. Furnish steel structure package complete with fasteners, anchor bolts, and hardware necessary to complete all support stands as shown on drawings. Structure types and quantities are designated on the Steel Drawings. Fasteners shall be furnished in a quantity 5 percent over actual requirements with a minimum of one (1) extra per structure.

If galvanizing is done outside the Supplier’s plant, the Supplier shall be entirely responsible for compliance with these specifications.

1.2 DEFINITION OF TERMS

"Supplier" shall mean person, firm, or corporation with whom Owner may enter into contract for execution of work specified.

“Owner" shall mean:

Idaho Falls Power Attn: Richard Malloy 140 South Capital Idaho Falls, ID 83402 Phone: 208-612-8428 Email: [email protected]

“Engineer" shall mean:

HDR Engineering, Inc. Chris Wallace, P.E. 970 S 29th St. WBillings, MT 59102 Phone: 406-656-8100 [email protected]

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ENGINEER DESIGNED STRUCTURES

2.1 OWNER SUPPLIED DRAWINGS

The following galvanized steel structures have been designed by the Owner:

Drawing No. Title Qty.

SS-01 Structural Steel – Plan View

SS-02 Sht. 1-3 161kV A-Frame Line Deadend w/ Switch – DE1

1

SS-03 Sht. 1-3 46kV A-Frame Breaker Bypass Deadend w/ Switches – DE2

1



SS-06 161kV 3Ф High Bus Switch Stand – BS3 2

SS-07 161kV 3Ф Low Bus Switch Stand – SS1 4

SS-08 161kV 3Ф High Bus Switch Stand – SS2 2

SS-09 Sht. 1-3 15kV H-Frame Breaker Bypass w/ Switches – BB1

1

SS-10 Sht. 1-5 15kV Distribution Structure – DS1 1

SS-11 15kV Termination Structure – TS1 4

SS-12 Static Mast – Direct Embed – SM1 2



SS-13 Steel Details – Anchor Bolts & Templates Lot

2.2 MATERIALS

Structural steel for standard shapes, plates and bars shall be as follows:

• Wide Flange Beams – ASTM A992, Fy=36ksi

• Miscellaneous Plates, Shapes, and Bars – ASTM A36, Fy=36ksi

• Hollow Structural Sections – ASTM A500 Grade B, Fy=46ksi

Erection bolts and nuts shall be high strength per ASTM A325 and ASTM A563 Type DH specifications, for bearing type connections and shall be hot dip galvanized. Washers shall be hardened steel washers in accordance with ASTM F436. All bolts shall be furnished with type “MF” locknuts.

Equipment bolts and nuts, if specified, shall be low carbon steel in accordance with ASTM A307. Bevel washers shall be supplied where required.

Page 5 of 9

Erection and equipment bolt and nut quantities shall be increased by 5 percent, unless otherwise specified on the drawings, to account for losses.

Standard anchor bolts shall be ASTM A36 or F1554, size and quantity as shown on the drawings. Anchor bolts shall be furnished with three (3) nuts (ASTM A563 Type DH), and two (2) flat washers (ASTM F436).

2.3 CODES AND STANDARDS

Structural steel shall be manufactured, fabricated, and assembled with best present-day manufacturing and installation practices.

Unless specifically noted to the contrary, steel structure design, fabrication, and erection shall comply with applicable section of latest revisions of the following codes and standards:

• “Specification for the Design, Fabrication, and Erection of

Structural Steel for Buildings” contained in “Steel Construction

Manual” of the American Institute of Steel Construction.

• “National Electric Safety Code” (Standard C2), American National

Standards Institute.

• “Code of Standard Practice” for the American Institute of Steel

Construction.

• “Specification for Structural Steel Joints Using A325 or A490 Bolts”

of the American Institute of Steel Construction.

Where conflicts are present between referenced codes and standards, the code or standard establishing more stringent requirements shall be followed.

2.4 FABRICATION

Steel structures shall be fabricated as shown on the drawings. Supplier shall assume responsibility as noted. Supplier shall verify all dimensions to verify proper fit up of structure connections prior to fabrication. Any deviation in dimension or materials from that shown on the drawings shall be submitted to the Engineer for his written approval prior to fabrication. Such submittals shall be in the form of shop fabrication drawings, per Section 2.10 of this specification.

Prior to being worked in any manner, structural materials shall be cleaned of all rust and foreign particles. Material shall be straight within the tolerance allowed by ASTM Specification A6. If straightening is necessary, it may be done by mechanical means or by application of a limited amount of localized heat. Straightening shall be done in a manner that will not injure the material.

Page 6 of 9

Punching and drilling shall be done accurately. Center to center distance between holes of a piece shall not vary more than 1/16 inch from the specified dimension. Holes other than those shown on the drawings and those required for the galvanizing process shall be approved by the Engineer. Burrs caused by drilling or punching shall be removed prior to galvanizing.

All connections shall be shop welded, except as noted below:

• Connections required or provided for disassembly and shipment of

structure. Field welding for reassembly will not be permitted.

• Bolted connections shown on the specification drawings or

approved on the supplier’s shop drawings.

Arc welding electrodes shall be in accordance with the requirements of the American Welding Society Specification D1.1, latest edition. Welding electrodes shall be E-70XX or equivalent wire if semi-automatic or automatic welding is used. Welding shall be performed by operators who have been qualified by tests as prescribed by AWS D1.1 to perform the type of welding required.

2.5 SHOP ASSEMBLY

Bolted structures shall be shop assembled to an extent that insures the correct fit of parts, adequate bolt length, and proper field erection. The necessity of drifting shall be cause for rejection.

2.6 GALVANIZING

All structural members, hardware and locknuts shall be hot dip galvanized, in accordance with ASTM A123, A143, A153, A384, A385, A386. Steel to be galvanized shall be clean and free from welding slag. All burrs and sharp edges shall be ground smooth.

Material on which the galvanizing has been damaged may be redipped, unless the damage is local and can be satisfactorily repaired by applying two coats of zinc base paint. Any member which has the galvanized coat damaged after being dipped twice shall be rejected.

In order to accommodate the galvanizing process:

• All tubular column base plates and closed tubular beam end plates

shall have vent holes for pressure relief and drainage, or as

detailed on the drawings.

• All gussets shall be cropped on inside corners.

• All tubular columns with welded top plates shall have semi-circular

holes cut into the top of the tube.

Page 7 of 9

• All tubular columns with base plates to be grouted shall have semi-

circular holes cut into the bottom of the tube to serve as weep

holes, unless otherwise indicated on the drawings.

2.7 MARKING

Each structure shall be plainly marked or stamped with its substation name and its respective erection identification mark. Pieces longer than 18 feet shall be marked at each end.

2.8 DELIVERY AND SHIPMENT

Structural Steel, with all associated hardware and fasteners, shall be shipped in the least amount of shipments required, F.O.B. job site. The Paine Substation site is located four miles northwest of the City of Idaho Falls on North River Road. The substation address is 6210 North River Road, Idaho Falls, ID 83402. Structural steel delivery shall be made on or before Monday, June 14, 2021. If this delivery date is unobtainable, then please state with your bid when the earliest delivery date to the project site can be met.

Anchor Bolt delivery shall be made F.O.B. job site. Latest acceptable delivery date for anchor bolts is Monday, May 17, 2021.

2.9 STRUCTURAL STEEL SHOP DRAWINGS

Structural steel shop drawings, for all Supplier designed and/or detailed structures, showing all details necessary for fabrication and assembly shall be provided as follows:

The standard drawing size for shop drawings shall be 22” x 34”. Drawings shall only contain a single drawing per page and be laid out in legible, organized manner, with uniformity in appearance, style, contents, and dimensional proportions on good quality paper. Material lists shall be included on the shop drawings.

Electronic files of all shop drawings shall be AutoCAD “DWG” files or PDF files, and shall include all reference files that will enable Engineer and Owner to view and generate plot files that will result in an exact match of the submitted hard copy.

Approval Drawings

Provide three (3) sets of drawings prior to fabrication. The Engineer will return to the Supplier, within two weeks after receipt, one set of drawings marked “Resubmit”, “Approved”, or “Approved as Revised”, as the case might be. In the last case, all revisions will be clearly shown

Page 8 of 9

on the returned set, which shall be considered as an approved set. Design revisions, in accordance with corrections shown thereon, may be considered as ready for fabrication. Corrections or revisions shown on “Resubmit” set shall be made, and two revised sets furnished to the Engineer for his approval. Drawings shall be returned two weeks after notice of requiring resubmittal.

Construction Drawings

Supplier shall send to the owner, no later than one week prior to shipment, three (3) 22” x 34” sets of structural steel shop drawings for construction purposes and an electronic (AutoCAD and PDF) file on a CD of all shop drawings.

“As-Built” Drawings

If any changes are made to the structures after the Construction Drawings have been sent for construction, the Supplier shall furnish (1) set of 22” x 34” “As-Built” print of the changed drawing and a revised electronic (AutoCAD and PDF) file on CD of all shop drawings.

SHOP DRAWINGS SUBMITTALS

Shop drawings submittals shall be sent to the Owner:

Idaho Falls Power Attn: Richard Malloy 140 South Capital Idaho Falls, ID 83402 Phone: 208-612-8428 Email: [email protected]

The standard drawing size for shop drawings shall be 22” x 34”. Drawings shall be laid out in legible, organized manner, with uniformity in appearance, style, contents, and dimensional proportions. Material lists shall be included on the shop drawings.

Electronic files of all shop drawings shall be AutoCAD “DWG” files and shall include all reference files that will enable Engineer and Owner to view and generate plot files that will result in an exact match of the submitted hard copy.

Page 9 of 9

1.1 PAINE SUBSTATION VICINITY MAP

SW ¼ of NW ¼ S36, T3N, R38E

Lat/Long: 43.548, -112.062

Delivery Address: 6210 North River Road, Idaho Falls, ID 83402

Structural Steel Specification - Paine Substation

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