SECTION ADDENDA ADDENDUM NUMBER 2

Transcription

1 SECTION ADDENDA ADDENDUM NUMBER 2 DATE: March 3, 2015 PROJECT TITLE: Terminal 3 M&R Facility PROJECT NUMBER: 305.T3 OWNER: Mississippi State Port Authority ENGINEER OF RECORD: Neel-Schaffer, Inc. TO: Prospective Bidders This Addendum forms a part of the Contract Documents and modifies the February 4, 2015 Issued For Bid documents with amendments and additions noted below. Acknowledge receipt of this Addendum in the space provided in the Bid Form. Failure to do so may disqualify the Bidder. This Addendum consists of 4 pages and 4 attachments as follows: 1. Section NONLOAD BEARING METAL STUDS 2. Section COLD FORMED STEEL FRAMING 3. Section SHEATHING 4. Sheet No. 6-S100 CLARIFICATIONS: Specification paragraph 1.5-A.2 architecturally exposed structural steel in this section is structural steel located on the outside of the building (exterior). Anchor rods referred to in Section paragraph 2.3-G, and sheets 0-S001 and shall be F1554 GR 36 or better. On Sheet 6-A200, the columns along grid line 6.1 are to be considered as interior to the building and do not require a hot dipped galvanized coating. On Sheets 6-S301 and 6-S302, members identified as C8 x 13.7 and C8 x 18.5 are correct as called out (new designation). Members indentified as MC8 x 18.5 should be MC8 x Structural steel shall conform to Section paragraph 2.7-B with SSPC Paint 15, Type 1, red oxide primer. Addenda No. 2 PGRP Project Title: Terminal 3 M&R Facility Issued - March 3, 2015

2 SPECIFICATION CHANGES: Specification sections and are part of the contract documents and are included in the table of contents. The disk provided to plan holders that contains the project specification sections inadvertently excluded these sections. Specification Section is a new section and should be added to the Table of Contents. These two sections are included as an attachment to this addendum CAST-IN-PLACE CONCRETE 1. Add paragraph 2.3-B.1.e as follows: e. Extreme Vapor Barriers mil Class A, by Tex-Trude LP STRUCTURAL STEEL FRAMING 1. Paragraph 2.3-G: Edit Grade 55 to read Grade 36 or better METAL FABRICATIONS 1. Paragraph 1.6-A: Omit reference to alternating tread devices. 2. Paragraph 1.6-B: Omit paragraph in its entirety. There are no alternating tread devices in the project. 3. Paragraph 1.7 MOCKUPS: Omit paragraph in its entirety. Mock-ups are not required for items under this section SHEATHING 1. Add section in its entirety CANOPIES 1. Paragraph 2.1 MANUFACTURERS: Add following paragraph; B. Peachtree Protective Covers or equal PLUMBING SPECIALTIES 1. Add paragraph 2.02-A.1 as follows: 1. Acceptable manufacturers: MiFab or Eric Sons. DRAWING CHANGES: END OF SPECIFICATION CHANGES FOR ADDENDUM NO. 2 Sheet 0-A004, MATERIALS REFERENCING 1. Material Note G2 5/8 Exterior Grade Plywood Edit to read, /8 Exterior Grade Gypsum Sheathing. 2. Material Note H3 Building Wrap Edit to read, Vapor Retarder. Sheet 0-A005, Drawing 1 EXTERIOR WALLS TYPES, Wall Type B Addenda No. 2 PGRP Project Title: Terminal 3 M&R Facility Issued - March 3, 2015

3 3. Material Note G2 5/8 Exterior Grade Plywood Edit to read, /8 Exterior Grade Gypsum Sheathing. 4. Material Note H3 Building Wrap Edit to read, Vapor Retarder. Sheet No. 0-A500, Detail 4 M&R TRENCH DRAIN 1. Material Note A15 Embed Angle - Edit to read, Embed Angle. Sheet No. 0-S031, dated February 4, Delete Typical section 1/0-S031 and Typical section 2/0-S031. Refer to drawings 0-A500, 6-A200 and 6-P100 for trench drain locations and details. Sheet No. 6-S100, dated February 4, Replace sheet in its entirety with the attached revised Sheet 6-S100, revised to February 24, Sheet No. 6-S301, dated February 4, Edit members called out as MC8 x 18.5 to read MC8 x Sheet No. 6-S302, dated February 4, Edit members called out as MC8 x 18.5 to read MC8 x END OF DRAWING CHANGES FOR ADDENDUM NO. 2 END OF DOCUMENT Addenda No. 2 PGRP Project Title: Terminal 3 M&R Facility Issued - March 3, 2015

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5 SECTION NONLOAD BEARING METAL STUDS PART 1 GENERAL 1.1 SUMMARY A. Section includes: 1. Furnishing and installation of light gauge steel studs and track system for nonload bearing walls and curtain walls indicated on Drawings. B. Related Sections: 1. Section Metal Fabrications. 1.2 SUBMITTALS A. Shop Drawings: 1. Submit shop drawings detailing both fabrication and erection procedures. Fabrication drawings shall show locations, sizes, and styles of all framing components. Erection drawings shall show sequence and methods of erection and details of all connection of light gauge steel framing to other elements of the building structure. B. Product Data: Descriptive data illustrating framing system components including fasteners and accessories, erection instructions containing sequence of operations and requirements for temporary bracing. C. Quality Assurance 1. Component Design: Submit for approval structural properties of studs and tracks in accordance with American Iron and Steel Institute (AISI) "Specification for Design of Cold- Formed Steel Structural Members". 2. Welding: Use qualified welders and comply with American Welding Society (AWS) D1.3, "Structural Welding Code - Sheet Steel". Welder shall be certified within previous 12 months. PART 2 PRODUCTS 2.1 MATERIALS A. System Components. Manufacturer's standard nonload bearing steel studs, tracks and angles, size, shape, and gauge indicated. Provide manufacturer's standard steel runners, blocking, lintels, clip angles, shoes, reinforcements, fasteners, and accessories as recommended by manufacturer for applications indicated, as needed to provide a complete metal framing system. B. Steel Sheet. 50,000 psi minimum yield strength. ASTM A653, Grade 50. C. Steel Gauges. Steel gauges and member sizes shall be as indicated on Drawings; where not specifically indicated on Drawings, 20 gauge studs shall be minimum thickness. Nonload Bearing Metal Studs PGRP Project Title: Terminal 3 M&R Facility Document Status: IFB - February 4, 2015

6 D. Coating. Galvanized in accordance with ASTM A924, G 60 minimum (Paint primer conforming to SSPC Paint 4-64T (iron zinc chromate)). Volume solids shall be 55 percent minimum. E. Fasteners. As recommended by framing manufacturer. Fasteners shall meet or exceed prescribed loads where indicated on the plans. Field welding shall be permitted in lieu of mechanical fasteners and required where indicated on Drawings. F. Fabrication. Framing components may be prefabricated into assemblies before erection. Fabricate panels plumb, square, true to line, and braced against racking with joints welded. Perform lifting of prefabricated units to prevent damage or distortion. Fabricate units in jig templates to hold members in proper alignment and position and to assure consistent component placement. PART 3 EXECUTION 3.1 PREFABRICATION A. At Contractor's option, framing components may be prefabricated into panels either on or off the site to erection or field assembled. 3.2 ERECTION A. General. Erect framing in accordance with manufacturer's written instructions and as specified herein. All work shall be installed plumb, level, and to dimensions and elevations indicated on Drawings. B. Tracks shall be securely attached 24 inches o.c. to concrete with power-driven anchors unless indicated otherwise. Tracks shall be in longest possible length with butt joints between lengths. C. Studs shall be installed vertically at 12 inches o.c. unless indicated otherwise. Secure studs that abut masonry or concrete walls, 48 inches o.c. maximum. Secure studs to top and bottom tracks, bridging, and adjoining metal framing with screws, bolts, clips, or welding at both flanges. Studs shall be continuous (no splices) from floor to structure above. D. Multiple Studs. Double studs on each side of openings. At corners of walls, provide 3 studs located so as to provide surfaces for facing attachment. E. Headers shall be installed over all wall openings. 3.3 SUPPLEMENTARY FRAMING A. Install blocking and bracing in metal framing system wherever walls or partitions are indicated to support fixtures, equipment, services, casework, heavy trim and furnishing, and similar work requiring attachment to the wall or partition. Where type of supplementary support is not otherwise indicated, comply with stud manufacturer's recommendations and industry standards in each case, considering weight or loading resulting from item supported. END OF SECTION Nonload Bearing Metal Studs PGRP Project Title: Terminal 3 M&R Facility Document Status: IFB - February 4, 2015

7 SECTION COLD FORMED STEEL FRAMING PART 1 GENERAL 1.1 SUMMARY A. Section includes: 1. Furnishing and installation of light gauge steel framing for roof and wall support system. 1.2 SUBMITTALS A. Shop Drawings: 1. Submit shop drawings detailing both fabrication and erection procedures. Fabrication drawings shall show locations, sizes, and styles of all framing components. Erection drawings shall show sequence and methods of erection and details of all connection of light gauge steel framing to other elements of the building structure. B. Product Data: Descriptive data illustrating framing system components including fasteners and accessories, erection instructions containing sequence of operations and requirements for temporary bracing. C. Quality Assurance 1. Component Design: Submit structural properties of purlins and girts in accordance with American Iron and Steel Institute (AISI) "Specification for Design of Cold-Formed Steel Structural Members". 2. Welding: Use qualified welders and comply with American Welding Society (AWS) D1.3, "Structural Welding Code - Sheet Steel". Welder shall be certified within previous 12 months. PART 2 PRODUCTS 2.1 MATERIALS A. System Components. Manufacturer's standard steel cees, zees, eave struts and angles of size, shape, and gauge indicated. Provide manufacturer's standard steel runners, blocking, lintels, clip angles, shoes, reinforcements, fasteners, and accessories as recommended by manufacturer for applications indicated, as needed to provide a complete metal framing system. B. Prime Painted Steel Sheet. ASTM A570, Grade 55, 55,000 psi minimum yield strength. C. Steel Gauges. Steel gauges and member sizes shall be as indicated on Drawings. D. Coating. Paint primer for all members conforming to SSPC Paint 4-64T (iron zinc chromate). Volume solids shall be 55 percent minimum. Exposed steel members to receive finish coat. Cold Formed Steel Framing PGRP Project Title: Terminal 3 M&R Facility Document Status: IFB - February 4, 2015

8 E. Fasteners. Standard bolts shall be 1/2 inch diameter ASTM A307 bolts. Other fasteners as recommended by framing manufacturer or as indicated on Drawings. Field welding shall be permitted in lieu of mechanical fasteners and required where indicated on Drawings. PART 3 EXECUTION 3.1 PURLIN AND GIRT INSTALLATION A. Install metal framing and accessories plumb, square, true to line, and with connections securely fastened according to manufacturer's recommendations and the Contract Documents. Cut framing members by sawing or shearing, do not torch cut. B. Fasten metal framing members by welding or bolting as standard with fabricator. Comply with AWS requirements and procedures for welding, appearance and quality of welds and methods used in correcting welding work. C. Install framing members in one piece lengths. Provide temporary bracing and leave in place until framing is permanently stabilized. END OF SECTION Cold Formed Steel Framing PGRP Project Title: Terminal 3 M&R Facility Document Status: IFB - February 4, 2015

9 Mississippi State Port Authority - Port of Gulfport Restoration Program SECTION SHEATHING PART 1 - GENERAL 1.1 RELATED DOCUMENTS A. Drawings and general provisions of the Contract, including General and Supplementary Conditions and Division 01 Specification Sections, apply to this Section. 1.2 SUMMARY A. Section Includes: 1. Wall sheathing. 2. Sheathing joint and penetration treatment. B. Related Requirements: 1. Section "Miscellaneous Rough Carpentry" for plywood backing panels. 2. Section Thermal Insulation for vapor barrier applied to exterior face of sheathing. 1.3 ACTION SUBMITTALS A. Product Data: For each type of process and factory-fabricated product. Indicate component materials and dimensions and include construction and application details. 1.4 DELIVERY, STORAGE, AND HANDLING A. Stack panels flat with spacers beneath and between each bundle to provide air circulation. Protect sheathing from weather by covering with waterproof sheeting, securely anchored. Provide for air circulation around stacks and under coverings. PART 2 - PRODUCTS 2.1 WALL SHEATHING A. Glass-Mat Gypsum Wall Sheathing: ASTM C 1177/1177M. 1. Products: Subject to compliance with requirements, provide one of the following: a. CertainTeed Corporation; GlasRoc. b. G-P Gypsum Corporation; Dens-Glass Gold. PGRP Project Title: Terminal 3 M&R Facility Issued March 2, 2015 Addenda No

10 Mississippi State Port Authority - Port of Gulfport Restoration Program c. National Gypsum Company; Gold Bond e(2)xp. d. Temple-Inland Inc.; GreenGlass e. United States Gypsum Co.; Securock. f. Or Equal. 2. Type and Thickness: Type X, 5/8 inch thick. 3. Size: 48 by 120 inches for vertical installation. 2.2 FASTENERS A. General: Provide fasteners of size and type indicated that comply with requirements specified in this article for material and manufacture. 1. For wall sheathing, provide fasteners with hot-dip zinc coating complying with ASTM A 153/A 153M. B. Power-Driven Fasteners: NES NER-272. C. Screws for Fastening Gypsum Sheathing to Cold-Formed Metal Framing: Steel drill screws, in length recommended by sheathing manufacturer for thickness of sheathing to be attached, with organic-polymer or other corrosion-protective coating having a salt-spray resistance of more than 800 hours according to ASTM B For steel framing less than inch thick, use screws that comply with ASTM C For steel framing from to inch thick, use screws that comply with ASTM C SHEATHING JOINT-AND-PENETRATION TREATMENT MATERIALS A. Sealant for Glass-Mat Gypsum Sheathing: Silicone emulsion sealant complying with ASTM C 834, compatible with sheathing tape and sheathing and recommended by tape and sheathing manufacturers for use with glass-fiber sheathing tape and for covering exposed fasteners. 1. Sheathing Tape: Self-adhering glass-fiber tape, minimum 2 inches wide, 10 by 10 or 10 by 20 threads/inch, of type recommended by sheathing and tape manufacturers for use with silicone emulsion sealant in sealing joints in glass-mat gypsum sheathing and with a history of successful in-service use. PART 3 - EXECUTION 3.1 INSTALLATION, GENERAL A. Do not use materials with defects that impair quality of sheathing or pieces that are too small to use with minimum number of joints or optimum joint arrangement. Arrange joints so that pieces do not span between fewer than three support members. PGRP Project Title: Terminal 3 M&R Facility Issued March 2, 2015 Addenda No

11 Mississippi State Port Authority - Port of Gulfport Restoration Program B. Cut panels at penetrations, edges, and other obstructions of work; fit tightly against abutting construction unless otherwise indicated. C. Securely attach to substrate by fastening as indicated, complying with the following: 1. NES NER-272 for power-driven fasteners. 2. Table , "Fastening Schedule," in ICC's "International Building Code." 3. Table R602.3(1), "Fastener Schedule for Structural Members," and Table R602.3(2), "Alternate Attachments," in ICC's "International Residential Code for One- and Two-Family Dwellings." D. Use common wire nails unless otherwise indicated. Select fasteners of size that will not fully penetrate members where opposite side will be exposed to view or will receive finish materials. Make tight connections. Install fasteners without splitting wood. E. Coordinate wall sheathing installation with flashing and joint-sealant installation so these materials are installed in sequence and manner that prevent exterior moisture from passing through completed assembly. F. Do not bridge building expansion joints; cut and space edges of panels to match spacing of structural support elements. G. Coordinate sheathing installation with installation of materials installed over sheathing so sheathing is not exposed to precipitation or left exposed at end of the workday when rain is forecast. 3.2 GYPSUM SHEATHING INSTALLATION A. Comply with GA-253 and with manufacturer's written instructions. 1. Fasten gypsum sheathing to cold-formed metal framing with screws. 2. Install boards with a 3/8-inch gap where non-load-bearing construction abuts structural elements. B. Apply fasteners so heads bear tightly against face of sheathing, but do not cut into facing. C. Horizontal Installation: Install sheathing with V-grooved edge down and tongue edge up. Interlock tongue with groove to bring long edges in contact with edges of adjacent boards without forcing. Abut ends of boards over centers of studs, and stagger end joints of adjacent boards not less than one stud spacing. Attach boards at perimeter and within field of board to each steel stud. 1. Space fasteners approximately 8 inches o.c. and set back a minimum of 3/8 inch from edges and ends of boards. D. Vertical Installation: Install board vertical edges centered over studs. Abut ends and edges of each board with those of adjacent boards. Attach boards at perimeter and within field of board to each stud. PGRP Project Title: Terminal 3 M&R Facility Issued March 2, 2015 Addenda No

12 Mississippi State Port Authority - Port of Gulfport Restoration Program 1. Space fasteners approximately 8 inches o.c. and set back a minimum of 3/8 inch from edges and ends of boards. E. Seal sheathing joints according to sheathing manufacturer's written instructions. 1. Apply elastomeric sealant to joints and fasteners and trowel flat. Apply sufficient amount of sealant to completely cover joints and fasteners after troweling. Seal other penetrations and openings. 2. Apply glass-fiber sheathing tape to glass-mat gypsum sheathing joints and apply and trowel silicone emulsion sealant to embed entire face of tape in sealant. Apply sealant to exposed fasteners with a trowel so fasteners are completely covered. Seal other penetrations and openings. END OF SECTION PGRP Project Title: Terminal 3 M&R Facility Issued March 2, 2015 Addenda No

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