Friday December 9, 2016 at 11AM has changed until Wednesday December 14, 2016 at 11AM

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1 December 6, 2016 Dear Sir/Madam: Attached is Addendum No. 1 for SEPTA's Sealed Bid Number AJEB General Contractor Services Callowhill Garage Installation of New HVAC Systems Project. The bid opening date and time scheduled for Friday December 9, 2016 at 11AM has changed until Wednesday December 14, 2016 at 11AM. The bids will be opened in Conference Room 11-B of SEPTA's General Offices, 1234 Market Street, 11th Floor Philadelphia, Pennsylvania Any inquiries regarding this bid must be directed to Justin Benante of the Procurement and Supply Chain Management Department at (215) Sincerely, X Justin Benante Sr. Contract Administrator Procurement & Supply Chain Management Dept.

2 Addendum #1 December 6, 2016 SEALED BID No AJEB General Contractor Services Callowhill Garage Installation of New HVAC Systems ADDENDUM No. 1 To All Bidders: The following constitutes Addendum No.1 to SEPTA's Sealed Bid No AJEB General Contractor Services Callowhill Garage Installation of New HVAC Systems. The Bid Due Date has changed from Friday December 9, 2016 at 11AM until Wednesday December 14, 2016 at 11AM. Addendum No. 1 must be acknowledged by inserting the date of the Addendum on Page 15 of the Bid Form. Failure to do so may render a bidder's proposal as nonresponsive. Questions and Answers issued with this Addendum No. 1 are hereby incorporated by reference and made part of the Terms and Conditions of this project A. General 1. Bid due date has changed from Friday December 9, 2016 at 11AM until Wednesday December 14, 2016 at 11AM. B. Specifications 1. Please replace original Specification Section Metal Stairs and Platforms with attached revised Specification Section Metal Stairs and Platforms Revised 11/30/16 C. Drawings 1. Please replace original Drawing Sheet A100 with attached revised Drawing Sheet A100 Dated 11/30/16 2. Please replace original Drawing Sheet A102 with attached revised Drawing Sheet A102 Dated 3/25/16 D. Questions and Answers GENERAL/ARCHITECTURAL Q1) Specification Section Section 3.06: Please confirm that SEPTA forces will perform the offloading and installation of the stairs and platforms A1) Installation is by the Contractor. See revised Specification Section Q2) Specification Section calls for steel and stainless steel construction of the Stairs and Platforms but Notes 11 to 14 on Drawing A100 call for aluminum construction. Please confirm the use of steel construction for the platforms and stairs. 1 P a g e

3 Addendum #1 December 6, 2016 A2) Stairs and platforms shall be galvanized steel. See revised Drawing A100 and Specification Section Q3) Specification Section Section 3.02 B. calls for stainless steel grating with bar centers at 11/16 bar centers. The modular stair and platform manufacturer does not provide a stainless steel option. May galvanized steel bar gratings at standard non-ada grating bar widths (as the alternate tread portion of the stair run is definitely not ADA) be provided at the stair treads and may galvanized diamond plate steel floor be provided at the platforms? A3) Stairs and platforms shall be galvanized steel. See revised Drawing A100 and Specification Section Q4) Specification Section Section 3.03 Stair Railing B. Steel Tube Railing calls for wire mesh infill but Drawing`A102 shows vertical pickets. The modular stair and platform manufacturer does not provide a wire mesh infill option. May the manufacturer standard galvanized steel tube railing system be used that follows the 21 diameter ball safety rule that would apply to industrial, factory and warehousing occupancies or will the 4 diameter ball safety rule need to be followed? A4) Railings shall be galvanized steel tube, designed to limit the passage of a 21 sphere. See revised drawing A100, A102 and Specification Section Q5) Specification Section Section 1.02 Summary A. 3.: Where is the railing gate to be installed as it is not shown on Drawing A102? A5) Gate is not required. See revised Specification Section Q6) Specification Section 05510: If the modular stair and platform are provided galvanized, will powder coated finished be required on the framing and/or railing system? A6) Galvanized finish is required on stairs and platform. See revised Specification Section Q7) Specification Section 05510: Did SEPTA have a specific modular stair and platform manufactured in mind when preparing the bid documents? A7) Design is based on a FS Industries customizable stairs and platforms. See revised Specification Section Q8) Drawing A100 Note 20.2: Please provide manufacturer and manufacturer s epoxy floor system that is to be matched at the removed radiators. Second, which contractor will do this patching: Mechanical Contractor or General Contractor? A8) The flooring patching will be the responsibility of the General Contractor. The flooring is a Sherwin Williams/General Polymers epoxy system, also noted on revised drawing A100: i) Base Coat: General Polymers #3479, waterborne 2-part epoxy ii) Flake Chip: Sherwin Williams Vinyl Chip iii) Top Coat: General Polymers #4844 solvent borne polyaspartic 2-part epoxy Q9) When the existing railing at the window well is replaced by 42 high estate fencing, will SEPTA raise and support the existing refrigerant lines between the building and the existing outdoor HVAC units as needed? 2 P a g e

4 Addendum #1 December 6, 2016 A9) SEPTA will relocate refrigerant lines as necessary MECHANICAL Q10) Drawing M206 Detail 8 Wall Louver: Which contractor will provide and install the wall louver: Mechanical Contractor per Specification Section Item 9 or General Contractor as the louver is specified in Specification Division 10? A10) General Contractor to provide and install louver as part of building envelope restoration work. Q11) Drawing M103 Detail 5: 1) Is this the detail at the 3 new unit heaters? and 2) If these vents are to be provided at the unit heaters, please provide a roof opening and roof penetration detail including framing that may be used as a basis of our GC bid. A11) Detail 5/M103 is of the unit heater venting roof penetration, to follow manufacturer requirements. Roof opening to follow typical structural detail 7/S102 unless smaller than indicated at which point opening can be core drilled. Q12) Drawing A100 Notes 20, 20.1, 20.2, 20.3 and 22: Confirm that the work required by these Notes despite being made on an A-series Architectural Drawing will be performed by the Mechanical Contractor per Specification Section Section 2.04 Paragraph A. A12) Work described in drawing A100 notes shall be performed by the GC. Q13) Drawing S102 Hanging Details 8 and 9 for the Unit Heaters: Will the hanger shown on Details 8 and 9 be the responsibility of the HVAC prime contractor? A13) GC to provide hangers as shown in drawing S102, coordinate with MC. Q14) Drawing A100 show exit signs that do not appear on the electrical drawings. Please confirm that the Electrical Prime Contractor will remove exit signs and provide and install any new exit signs. A14) Exit signs are on Electrical drawings E104-5 and specified as EC work in spec B.6. 3 P a g e

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6 REVISED 11/30/16 SECTION METAL STAIRS AND PLATFORMS 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. Preassembled industrial-type, galvanized steel stairs, platforms, alternating tread device, guardrails and handrails, engineered by a licensed engineer in the Commonwealth of PA. B. Reference Standards: 1. American Disability Act (ADA) a. ADA-ABA Accessibility Guidelines and ICC/ANSI A American Institute of Steel Construction a. Manual of Steel Construction b. Code of Standard Practice 3. American Iron and Steel Institute (AISI): a. AISI 121: Standard Definitions for Use in the Design of Steel Structures. 4. American National Standards Institute (ANSI): a. ANSI A117.1: Accessible and Usable Buildings and Facilities Standards. 5. ASTM International formerly American Standards for Testing and Materials (ASTM): a. ASTM 1008: Standard Specification for Steel, Sheet, Cold-Rolled, Carbon, Structural, High-Strength Low-Alloy and High- Strength Low-Alloy with Improved Formability, Solution Hardened, and Bake Hardened. b. ASTM A 1011/A 1011M: Standard Specification for Steel, Carbon, Hot-Rolled Sheet and Strip, Hot-Rolled, Carbon, Structural, High- Strength Low-Alloy and High-Strength Low-Alloy with Improved Formability. Metal Stairs and Platforms _ REVISED

7 REVISED 11/30/16 c. ASTM A 283/A 283M: Standard Specification for Low and Intermediate Tensile Strength Carbon Steel Plates. a. ASTM A 36/A 36M: Standard Specification for Carbon Structural Steel. a. ASTM F 436: Standard Specification for Hardened Steel Washers b. ASTM A 563: Standard Specification for Carbon and Alloy Steel Nuts c. ASTM A 513: Standard Specification for Electric-Resistance-Welded Carbon and Alloy Mechanical Tubing. d. ASTM A 53: Standard Specification for Pipe, Steel, Black and Hot Dipped, Zinc-Coated, Welded and Seamless. e. ASTM A 6/A 6M: Standard specification for General Requirements for Rolled Structural Steel Bars, Plates, Shapes, and Sheet Piling. f. ASTM A 786: Standard Specification for Hot-Rolled Carbon, Low-Alloy, High-Strength Low-Alloy, and Alloy Steel Floor Plates. g. ASTM E 894: Standard Test Method for Anchorage of Permanent Metal Railing Systems and Rails for Buildings. h. ASTM E 935: Standard Test Method for Performance of Permanent Metal Railing Systems and Rails for Buildings. i. ASTM F 1554: Standard Specification for Anchor Bolts, Steel, 36, 55, and 105-ksi Yield Strength 6. American Welding Society (AWS): a. AWS D1.1/D1.1M: Structural Welding Code - Steel. b. AWS D1.3: Structural Welding Code - Sheet Steel. 7. International Code Council International Building Code 8. National Association of Architectural Metal Manufacturers (NAAMM): a. AMP : Metal Finishes Manual b. AMP : Metal Stair Manual c. MBG : Metal Bar Grating Manual 1.3 SUBMITTALS A. Shop drawings showing layout, anchoring and attachment details to be signed and sealed by a professional engineer in the Commonwealth of PA. B. Shop drawings shall be drawn to scale and clearly shall accurately show all dimensions, materials, connections. 1.4 PERFORMANCE REQUIREMENTS A. Delegated Design: Design metal stairs and platforms, including comprehensive engineering analysis by a qualified Professional Engineer, using performance requirements and design criteria indicated. The details shown on the Drawing do not indicate the required section sizes or quantities or required Metal Stairs and Platforms _ REVISED

8 REVISED 11/30/16 connections unless specifically noted. Use rational engineering design and standard practice in detailing to develop the preliminary design shown. B. Structural Performance of Stairs and Platforms: Metal stairs and platforms shall withstand the effects of gravity loads and the following loads and stresses within limits and under conditions indicated. 1. Wind Loads; Basic Wind Speed, Importance Factor and Exposure Category. Comply with IBC. 2. Walking Surface: The stair and platform walking surfaces shall be capable of withstanding 100 pounds per square foot or a 300 pound load on an area of 4 square inches without exceeding the allowable working stress of the material; or a single concentrated 1000 pound load without permanent deformation. 3. Structural Support System: The stair and platform support system shall be capable of withstanding a uniform live loading of 100 pounds per square foot applied in a downward direction to all stair and platform surfaces, or a 300 pound load on an area of 4 square inches without exceeding the allowable working stress of the material; or a single concentrated 1000 pound load without permanent deformation. System shall also be capable of withstanding stresses resulting from railing loads in addition to loads specified above. 4. Locate columns and design column bases such that column reactions can be adequately supported on an 8-inch thick reinforced concrete slab. 5. Limit deflection of treads, platforms, and framing members to L/360 or 1/4 inch, whichever is less. C. Structural Performance of Railings: Railings shall withstand the effects of gravity loads and the following loads and stresses within limits and under conditions indicated. 1. Handrails and Top Rails of Guards: a. Uniform load of 50 lbf/ ft. applied in any direction. b. Concentrated load of 200 lbf applied in any direction. c. Uniform and concentrated loads need not be assumed to act concurrently. 2. Infill of Guards: a. Concentrated load of 50 lbf applied horizontally on an area of 1 sq. ft. b. Infill load and other loads need not be assumed to act concurrently. D. Thermal Movements: Allow for thermal movements from ambient and surface temperature changes acting on exterior metal fabrications by preventing buckling, opening of joints, overstressing of components, failure of connections, and other detrimental effects. 1. Temperature Change: 120 deg F, ambient; 180 deg F, material surfaces. 1.5 QUALITY ASSURANCE A. Manufacturer Qualifications: Manufacturer shall have produced the types of stair, platforms, alternating tread device, and railing systems specified in this section. B. NAAMM Stair Standard: Comply with "Recommended Voluntary Minimum Standards for Fixed Metal Stairs" in NAAMM AMP 510, "Metal Stairs Manual," for class of stair designated, unless more stringent requirements are indicated. 1. Provide construction type, details, and finish for a Pre-assembled Industrial stair. Metal Stairs and Platforms _ REVISED

9 REVISED 11/30/16 C. Welding Qualifications: Qualify procedures and personnel according to AWS D1.1/D1.1M, "Structural Welding Code - Steel." D. Welding Qualifications: Qualify procedures and personnel according to the following: 1. AWS D1.1/D1.1M, "Structural Welding Code - Steel." 2. AWS D1.3, "Structural Welding Code - Sheet Steel." 1.6 COORDINATION A. Provide all anchors for metal stair erection. Furnish setting drawings, templates, and directions for installing anchorages, including sleeves, concrete inserts, anchor bolts, and items with integral anchors, that are to be embedded in concrete slab. PART 2 - PRODUCTS 2.1 MANUFACTURER A. FS Industries, (800) , PO Box 72659, Providence, RI B. Approved Equal 2.2 METALS, GENERAL A. Metal Surfaces, General: Provide materials with smooth, flat surfaces unless otherwise indicated. For components exposed to view in the completed Work, provide materials without seam marks, roller marks, rolled trade names, or blemishes. 2.3 METALS A. Steel Plates, Shapes, and Bars: ASTM A 36. B. Steel Tubing: ASTM A FASTENERS A. Bolts: ASTM A 325. B. Carriage Bolts: ASTM A 307, Gr. A. C. Nuts: ASTM A 563. D. Washers: ASTM F 436. E. Anchor Rods: ASTM F Metal Stairs and Platforms _ REVISED

10 REVISED 11/30/16 PART 3 - EXECUTION 3.1 FABRICATION, GENERAL A. Stringers shall be cut and formed from a single piece of stock for the full, design length. Splicing shall not be permitted. B. Risers shall be equally spaced to within 3/16 of any adjacent riser and within 3/8 of any two non-adjacent risers on the stair. C. Provide complete stair assemblies, including metal framing, struts, railings, clips, brackets, bearing plates, kick plates, and other components necessary to support and anchor stairs and platforms on concrete slab. 1. Join components by welding unless otherwise indicated. 2. Use connections that maintain structural value of joined pieces. D. Pre-assembled Stairs: Assemble stairs in shop to greatest extent possible. Disassemble units only as necessary for shipping and handling limitations. Clearly mark units for reassembly and coordinated installation. Pre-assembled Stairs come either treads to stringers or rail to stringer with bolt in treads. E. Cut, drill, and punch metals cleanly and accurately. Remove burrs and ease edges to a radius of approximately 1/32 inch unless otherwise indicated. Remove sharp or rough areas on exposed surfaces. F. Form bent-metal corners to smallest radius possible without causing grain separation or otherwise impairing work. G. Form exposed work with accurate angles and surfaces and straight edges. H. Weld connections to comply with the following: 1. Use materials and methods that minimize distortion and develop strength and corrosion resistance of base metals. 2. Obtain fusion without undercut or overlap. 3. Remove welding flux immediately. 4. Weld exposed corners and seams continuously unless otherwise indicated. 5. At exposed connections, finish exposed welds to comply with NOMMA's "Voluntary Joint Finish Standards" for Type 2 welds: completely sanded joint, some undercutting and pinholes okay. I. Form exposed connections with hairline joints, flush and smooth, using concealed fasteners where possible. Where exposed fasteners are required, use carriage bolts unless otherwise indicated. Locate joints where least conspicuous. 3.2 STEEL-FRAMED STAIRS AND PLATFORMS A. Stair and Platform Framing: 1. Weld stringers to headers; weld framing members to stringers and headers. 2. Framing shall be hot dip galvanized. B. Tread and Platform Material: 1. Form treads and platforms to configurations shown from hot dip galvanized metal bar grating or diamond plate steel. a. Metal Bar Grating 1) Metal bar grating to comply with NAAMM MBG 531, "Metal Bar Grating Manual." 2) Grating shall have bar centers no more than 11/16 inch in least dimension. 3) Surface: Serrated. Metal Stairs and Platforms _ REVISED

11 REVISED 11/30/16 4) Fabricate grating treads from galvanized steel grating with checkered plate or abrasive nosing and with steel angle or steel plate carrier at each end for stringer connections. Secure treads to stringers with bolts. 5) Fabricate grating platforms with nosing matching that on grating treads. Provide kick plates at open-sided edges of grating platforms. Attach grating to platform framing. b. Diamond Plate Steel 1) Diamond plate steel shall be 11 ga minimum with abrasive finish. 2) Diamond plate shall be reinforced at edges and other locations as required. 2. All risers to be solid. 3.3 STAIR RAILINGS A. Rails may be bent or welded corners and rail returns. B. Connect posts to stair framing by direct welding unless otherwise indicated. C. Steel Tube Railings: Fabricate railings to comply with requirements indicated for design, dimensions, details, finish, and member sizes, including wall thickness of tube, post spacings, and anchorage, but not less than that needed to withstand indicated loads. 1. Rails and Posts: 1-1/4 minimum diameter,.074 min thickness. D. Railings shall be 42 tall and designed to prevent the passage of a 21 sphere, per IBC E. Handrails shall be provided for all stairs per IBC 1012 and include extensions at the top and bottom of stairs. F. Welded Connections: Fabricate railings with welded connections. Cope components at connections to provide close fit, or use fittings designed for this purpose. Weld all around at connections, including at fittings. 1. Finish welds to comply with NOMMA's "Voluntary Joint Finish Standards" for Type 1 welds: no evidence of a welded joint. G. Form simple and compound curves by bending members in jigs to produce uniform curvature for each repetitive configuration required; maintain cross section of member throughout entire bend without buckling, twisting, cracking, or otherwise deforming exposed surfaces of components. H. Close exposed ends of railing members with prefabricated end fittings. I. Close ends of returns. J. Cap handrail return if exposed. K. Brackets, Flanges, Fittings, and Anchors: Provide end closures, flanges, and miscellaneous fittings for interconnecting components and for attaching to other work. Furnish inserts and other anchorage devices for connecting to concrete. 1. Connect posts to stair framing by direct welding or bolted connections. Metal Stairs and Platforms _ REVISED

12 REVISED 11/30/ FINISHES A. Comply with NAAMM's "Metal Finishes Manual for Architectural and Metal Products" for recommendations for applying and designating finishes. B. Finish metal stairs after assembly. C. Galvanize railings and provide touch up galvanizing spray 1. Thickness provide a 2.0 oz/sq. ft. zinc coating 2. Coating to meet ASTM A123 and ASTM D6386 standards 3. Visible drips splatters and runs shall not be accepted. 3.5 HANDLING AND DELIVERY A. Material shall be stored out of contact with the ground in such a manner and location as will minimize deterioration. B. Handle fabricated assembly in a manner that will not overstress or damage the steel and coatings. Repair all damaged steel and coatings to the satisfaction of SEPTA. 3.6 INSTALLATION A. Install per manufacturer s instructions and to all tolerances required by code. END OF SECTION Metal Stairs and Platforms _ REVISED

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