Acknowledge receipt of this addendum in the space provided in the bid form. Failure to do so may render the bid unresponsive.

Transcription

1 ADDENDUM NO. 1 Project: SCGSAH Music Building Addition 15 University Street Greenville, SC State Project No: H MJ DP3 Project No: Date: 23 February 2019 To: All Bid Document Holders This Addendum, consisting of 4 pages, forms a part of the contract documents dated 6 February 2018 and modifies the bidding 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 render the bid unresponsive. GENERAL 1. The mandatory pre-bid conference was held at the SCGSAH Visitor s Center on 22 February The list of attendees is attached to this addendum. 2. The OSE representative reviewed the bidding and insurance requirements per the current Manual for Planning and Execution of State Permanent Improvements. 3. The SCGSAH project manager reviewed the nature of the residential school in conjunction with safety and site concerns. 4. A site map showing available layout area at County Square is attached to this addendum. 5. The architectural representative generally reviewed special requirements of the specifications as far as tree protection, rock removal and testing and inspections. Refer to the project manual s individual sections for specifics. 6. The last addendum will be issued no later than March 2nd at the end of the day. All attendees will receive all addenda electronically. The last day for contractors to submit questions is March 1st at 5:00 pm. The last day for substitution requests is February 26 th at 5:00 pm. All requests and questions are to be sent to lcardenas@dp3architects.com. 7. There will be an opportunity to do an additional escorted site walk on Tuesday February 27 th at 10 am or Thursday February 29 th at 1 pm. Meet at the Visitors Center to sign in. PROJECT MANUAL 1. TOC- Table of Contents REVISE TOC 1, Table of Contents to 5 instead of 1 page. DP3 Architects, Ltd. 15 South Main Street Suite 400 Greenville, SC PEOPLE PLACES PURPOSE

2 REISSUE pages 2, 4 & 5 in its entirety for numerical corrections with technical specification sections. 2. Section Summary REVISE paragraph 1.03 Description of Alterations Work sentence A to read Modification of the existing music building roof: provide up to 40 of gutter and a downspout to match new downspouts. 3. Section Allowances REISSUE section in its entirety to correct a numerical error. 4. Section Execution and Closeout Requirements ADD C. Acoustical consultant will perform acoustical testing of HVAC equipment installation after TAB has occurred. Equipment will be adjusted or modified as required to provide required NC values. 5. Section Sheet Waterproofing REVISE paragraph 3.05 Field Quality Control: A. Manufacturer to do visual inspection and provide report after installation of membrane prior to installation of protection board. 6. Section Asphalt Shingles ISSUE Architectural Laminated Shingles Roofing Warranty that was omitted from print files. 7. Section Foamed-In-Place Acoustical Masonry Insulation REVISE 3.03 to read Testing Agency: Owner will engage a qualified testing agency to do infrared photography of the foamed in place insulation to be consistent with the drawing requirements. 8. Sections Steel Sound Control Door Assemblies, Sound Control Wood Door Assemblies ADD 1.09 Warranties: Provide manufacturer s standard ten year warranty. DELETE 3.04 Field Quality Control paragraph B. An independent testing agency is not required. The field services representative from the manufacturer indicated in paragraph A is acceptable. 9. Section Steel Acoustical Window Frames ADD 1.09 Warranties: Provide manufacturer s standard ten year warranty. REPLACE in paragraph 3.03 Field Quality Control paragraph A with: Engage and pay for the field services of manufacturer's authorized representative to: 1. Inspect completed installation of door and frame assemblies. SCGSAH Music Building Addition Page - 2

3 2. Test all components through a minimum of ten complete cycles of operation. 3. Verify each component is correctly installed. 4. Direct installer in adjusting components for correct operation. 5. Issue certified statement of compliance of installed door and frame assemblies to Architect-approved shop drawings. 6. Instruct Owner's maintenance personnel in correct operation and maintenance procedures for components of door and frame assemblies 10. Section Gypsum Board Assemblies ADD: to 2.02 Board Materials F. Exterior Sheathing Board: Sizes to minimize joints in place; ends square cut. 1. Mold Resistance: Score of 10, when tested in accordance with ASTM D Glass Mat Faced Sheathing: Glass mat faced gypsum substrate as defined in ASTM C1177/C1177M. 3.Regular Board Thickness: 1/2 inch. 4.Edges: Square. 5.Glass Mat Faced Products: a. American Gypsum Company; M-Glass Exterior Sheathing. b. Continental Building Products; Weather Defense Platinum Exterior Sheathing. c. Georgia-Pacific Gypsum; DensGlass Sheathing. d. USG: Securerock Brand Glass Mat Sheathing. 11. Section Acoustical Vinyl Barriers REISSUE in its entirety for numerical correction. ISSUE Plenum Barrier Detail by Thorburn Associates that was omitted from print files. DRAWINGS 1. Drawing T1.1 Title Sheet DELETE S2.0 Walkway Plan and Details from the Drawing Index. 2. Drawings A7.1, A7.2, A7.3 MODIFY all wall exterior wall sections to show sheathing on closure stud wall on top of masonry to truss per sketch ASKA-1. QUESTIONS FROM THE CONTRACTORS 1. Detail 10/A302 shows a vinyl acoustical barrier detail. The drawings show a framed wall with batt insulation at the top of perimeter CMU walls to infill walls at the trusses. Is the vinyl barrier required at these locations? If this is not the SCGSAH Music Building Addition Page - 3

4 intended location confirm the required locations. If not will a 6 mil reinforced plastic be acceptable? RESPONSE: The intention of the vinyl acoustical barrier is to provide a methodology for the contractor to install a acoustical separation without extending the interior masonry walls up to the deck. There are multiple trusses, ducts, piping etc that would make a cmu wall to deck difficult to construct and seal. The contractor has the option to extend as many interior masonry walls as possible up to the deck. Refer to the drawings and Plenum detail for additional information on penetrations through the acoustical vinyl. At the exterior walls, there is no requirement for the vinyl acoustical barrier material. At the short infill walls at the exterior the weather barrier is to extend up the face of the masonry over the sheathing to the roof deck. ATTACHMENTS: Layout Area Available to Contractors at County Square 2 pages Sign- In sheets from Pre-bid conference 5 pages Table of Contents sheets reissued 3 pages Section Allowances 1 page Architectural Laminated Shingles Roof Warranty 2 pages Section Acoustical Vinyl Barriers and detail 3 pages Drawing Sketch ASKA-1 1 page END OF ADDENDUM SCGSAH Music Building Addition Page - 4

5 ! Map data 2018 City of Greenville, Google Imagery 2018, City of Greenville GIS, DigitalGlobe, U.S. Geological Survey, USDA Farm 50 m Report Service a map Agency error Output : Current Area m² 0.00 km² 0.22 acres 0.09 hectares feet² 0.00 square miles 0.00 square nautical miles Current Perimeter m OR feet

6 ! Map data 2018 City of Greenville, 5 m Google Imagery 2018, City Report of Greenville a map error GIS Output : Current Area m² 0.00 km² 0.22 acres 0.09 hectares feet² 0.00 square miles 0.00 square nautical miles Current Perimeter m OR feet

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12 TECHNICAL SPECIFICATIONS AVAILABLE PROJECT INFORMATION REPORT OF GEOTECHNICAL INFORMATION SUBSTITUTION REQUEST FORM - DURING PROCUREMENT DIVISION 01 - GENERAL REQUIREMENTS SUMMARY PRICE AND PAYMENT PROCEDURES ALLOWANCES UNIT PRICES ADMINISTRATIVE REQUIREMENTS CONSTRUCTION PROGRESS SCHEDULE QUALITY REQUIREMENTS TEMPORARY FACILITIES AND CONTROLS TREE PROTECTION ZONE TREE PROTECTION SCHEDULE PRODUCT REQUIREMENTS EXECUTION AND CLOSEOUT REQUIREMENTS CLOSEOUT SUBMITTALS DEMONSTRATION AND TRAINING DIVISION 03 - CONCRETE CAST IN PLACE CONCRETE PRECAST ARCHITECTURAL CONCRETE DIVISION 04 - MASONRY MAINTENANCE OF MASONRY UNIT MASONRY DIVISION 05 - METALS STRUCTURAL STEEL FRAMING STEEL DECKING COLD FORMED METAL TRUSSES METAL FABRICATIONS METAL STAIRS ALUMINUM HANDRAILS AND RAILINGS PIPE AND TUBE RAILINGS STATEMENT OF SPECIAL INSPECTIONS DIVISION 06 - WOOD, PLASTICS, AND COMPOSITES ROUGH CARPENTRY ARCHITECTURAL WOOD CASEWORK DIVISION 07 - THERMAL AND MOISTURE PROTECTION SHEET WATERPROOFING THERMAL INSULATION FOAM-IN_PLACE ACOUSTICAL MASONRY INSULATION ROOF AND DECK INSULATION WEATHER BARRIERS TOC-2

13 PIPING PIPE HANGARS AND SEISMIC CONTROLS FOR FIRE SUPPRESSION PIPING AND EQUIPMENT WET AND DRY FIRE SPRINKLER SYSTEMS FIRE SPRINKLER SYSTEM SPECIFICATION SHEET DIVISION 22 PLUMBING SYSTEMS MECHANICAL GENERAL PROVISIONS PIPE, TUBE AND FITTINGS PIPING ACCESSORIES VALVES SYSTEMS INSULATION DOMESTIC WATER PIPING SYSTEMS SOIL AND WASTE PIPING SYSTEMS PLUMBING FIXTURES DIVISION 23 - HVAC HANGERS, SUPPORTS AND ANCHORS SEISMIC PROTECTION FOR MECHANICAL SYSTEMS MECHANICAL GENERAL PROVISIONS PIPE, TUBE AND FITTINGS PIPING ACCESSORIES HANGER, SUPPORTS AND ANCHORS SEISMIC PROTECTION FOR MECHANICAL SYSTEMS SYSTEMS INSULATIONS AIR DISTRIBUTION SPLIT SYSTEM HEAT PUMPS DIVISION 26 ELECTRICAL TESTING/ADJUSTING/BALANCING: HEATING/VENTILATION/COOLING SYSTEMS BUILDING MANAGEMENT SYSTEM (BMS) LOW-VOLTAGE ELECTRICAL POWER CONDUCTORS AND CABLES GROUNDING AND BONDING FOR ELECTRICAL SYSTEMS HANGERS AND SUPPORTS FOR ELECTRICAL SYSTEMS RACEWAYS AND BOCES FOR ELECTRICAL SYSTEMS IDENTIFICATION FOR ELECTRICAL SYSTEMS SHORT-CIRCUIT STUDIES COORDINATION STUDIES ARC-FLASH WIZARD ANALYSIS LIGHTING CONTROL DEVICES RELAY BASED LIGHTING CONTROLS PANELBOARDS WIRING DEVICES FUSES MANUAL AND MAGNETIC MOTOR CONTROLLERS DIESEL EMERGENCY ENGINE GENERATORS TRANSFER SWITCHES LED INTERIOR LIGHTING LED EXTERIOR LIGHTING DIVISION 28 - FIRE ALARM ADDRESSABLE FIRE ALARM SYSTEMS TOC-4

14 DIVISION 31 - EARTHWORK SITE CLEARING AND EROSION CONTROL EARTH MOVING TERMITE PROTECTION DIVISION 32 EXTERIOR IMPROVEMENTS ASPHALT PAVING CONCRETE PAVING TURF AND GRASSES PLANTS DIVISION 33 SITE IMPROVEMENTS WATER DISTRIBUTION SYSTEM GRAVITY FLOW SANITARY SEWERAGE SYSTEM STORM DRAINAGE SYSTEM TOC-5

15 PART 1 GENERAL 1.01 SECTION INCLUDES A. Cash allowances. SECTION ALLOWANCES B. Payment and modification procedures relating to allowances CASH ALLOWANCES A. Costs Included in Cash Allowances: Cost of removal of rock and haul off to Contractor or subcontractor, less applicable trade discounts. B. The Allowance will be quantified by the unit price listed under section Unit Prices for Mass Rock Removal (Blast & Haul Off) and Trench Rock (Hammer & Haul Off). C. Modifications to the Allowance will be adjusted based on the Unit Prices for Mass Rock Removal (Blast & Haul Off) and Trench Rock (Hammer & Haul Off) ALLOWANCES SCHEDULE A. Section : EARTH MOVING: Include the stipulated sum of $215, for removal and haul off of mass and trench rock. PART 2 PRODUCTS - NOT USED PART 3 EXECUTION - NOT USED END OF SECTION State Project No. H MJ Arch. Project No ALLOWANCES

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18 SECTION ACOUSTICAL VINYL BARRIERS 1.01 PART 1 GENERAL A. SUMMARY 1. This section includes the following: a. Acoustical Vinyl Barriers B. SUBMITTALS 1. Shop Drawings: Show fabrication and installation details for Vinyl Barriers. 2. Submittals: Furnish 8 1/2 x 11 samples. 3. Product Test Report: From a qualified testing agency indicating Vinyl Barriers comply with requirements. 4. Product Certificates: Signed by manufacturer certifying that the products furnished comply with requirements. C. QUALITY ASSURANCE 1. Manufacturer Qualification: Manufacture shall have a minimum of 5 years experience in production of specified products and shall furnish supporting documentation showing completed jobs of approximately the same size and scope. 2. Strength Reports: Provide Noise Barriers with the following characteristics as per ASTM D412 and D1004. a. Tensile Strength: at least 220 Lb/in 2 b. Elongation: at least 140% c. Tear Strength: 40Lb/in 3. Acoustical Test Report: Provide acoustical test report from a qualified testing agency indicating the Noise Barrier meets a STC value of at least 25 per ASTM E-90 & E 413. D. DELIVERY, STORAGE, AND HANDLING 1. Protect Vinyl Barriers from excessive moisture when shipping, storing, and handling. Deliver in unopened skids and store in a dry place with adequate air circulation. Do not deliver material until all wet-work has been completed. State Project No. H MJ Arch. Project No ACOUSTICAL VINYL BARRIERS

19 2.01 PART 2 PRODUCTS A. Vinyl Barriers, General 1. Noise Barriers shall be nominally 0.1 thick 1.0 lb. Per square foot density. B. Products: Basis of Design; B-10R by Sound Seal. a. Reinforced loaded vinyl barrier b. STC: 26 c. Standard Width: 54 inches d. Length: As indicated, up to 60 feet long CONSTRUCTION A. The Vinyl Barrier product shall be supplied in 54 wide panels or rolls with lengths as required. a. Sound Transmission loss: Per ASTM E-90 & E-413 Octave Band Center Frequency (Hz) STC b. Flammability Rating 3.01 PART 3 EXECUTION A. INSTALLATION 1) Material shall pass UL 94 HB 1. Install Vinyl Barrier on top of all masonry walls that do not extent to metal deck, at all locations around bearing beams that interrupt sand filled cmu walls and other locations as required to separate sound activities in practice rooms, teaching studios, ensemble, percussion and rehearsal rooms. Refer to Detail in Project Manual following this section. 2. Comply with manufactures written instructions for installation of rolled goods using type of mounting accessories as recommended by manufacturer. 3. Install Acoustical sealant at perimeter of Vinyl Barrier and adjacent materials. B. CLEANING 1. After completion of installation rolled goods, remove dust and other foreign material according to manufactures written instructions. 2. Remove surplus material, rubbish, and debris resulting from Vinyl Barrier Composite installation, on completion of the work, and leave areas of installation in a neat and clean condition. END OF SECTION State Project No. H MJ Arch. Project No ACOUSTICAL VINYL BARRIERS

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21 SKETCH NO.: ASKA-1 DETAIL MODIFICATION SKETCH PROJECT: H MJ/ SCGSAH MUSIC BUILDING ADDITION ISSUE DATE: 02/23/18 KEYNOTES INCH X 8 INCH X 16 INCH CONCRETE MASONRY UNIT, RUNNING BOND. REFER TO STRUCTURAL DRAWINGS FOR REINFORCING AND BOND BEAM LOCATIONS REQUIRED TRUSS ATTACHMENT. REFER TO STRUCTURAL DRAWINGS BATT INSULATION. REFER TO SPECIFICATIONS INCH METAL STUD FRAMING SYSTEM. REFER TO STRUCTURAL DRAWINGS ACOUSTICAL CEILING TILE. REFER TO FINISH SCHEDULE GLASS MATTE FACED SHEATHING. 1 2' - 9 5/8" OUTRIGGER EXTENSION 5 A7.3 SIM MAIN TRUSS BEARING 11' - 4" 6 3/4" 8" 4" " DETAIL - TYPICAL AT ALL WALL SECTIONS