SAN FRANCISCO UNIFIED SCHOOL DISTRICT FACILITIES, DESIGN AND CONSTRUCTION ADDENDUM NO. 1

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1 SAN FRANCISCO UNIFIED SCHOOL DISTRICT FACILITIES, DESIGN AND CONSTRUCTION ADDENDUM NO. 1 PROJECT: PROPOSITION 39, ENERGY MEASURE PROJECT PACKAGE 1B DATE: March 20, 2017 San Francisco, CA SFUSD Project No , 11875, OWNER: San Francisco Unified School District DSA FILE NO.: n/a 135 Van Ness Avenue San Francisco, CA DSA APP. NO.: n/a Notice is hereby given to all prospective bidders that plans and specifications on the subject project are modified as hereinafter set forth. This Addendum shall be attached to and form a part of the plans and specifications. All bidders must acknowledge receipt of this addendum on the Bid Form. In case of difference with previous addenda or communications, this addendum takes precedence. It is the responsibility of all bidders to notify all subcontractors from whom they request bids and from whom they accept bids of all changes contained in this addendum. PROJECT MANUAL 1. Item No. PM-1 Section Existing Hazardous Materials Conditions Revise Article 1.02 (C.) (1.) (a.) (3)) to read as follows: 3) Roof Parapet flashing at the Main Administration Building Roof. 2. Item No. PM-2 Section Summary of Hazardous Materials Work Revise Article 1.03 (A.) (1.) (c.) to read as follows: c. Remove and recycle all coolant gasses from HVAC equipment at the roof of the Main Administration Building scheduled for removal. 3. Item No. PM-3 4. Item No. PM-4 5. Item No. PM-5 Section Roofing Repair Added specification section. Section Control Systems General conditions Removed. Section Building Management System (BMS) Removed. Page 1 of 6

2 6. Item No. PM-6 7. Item No. PM-7 Section Building Management System Field Devices Removed. Section Sequence of Operation Removed. DRAWINGS 1. Item No. AD Item No. AD1-2 COVER SHEET (PACKAGE 1B) G Deleted drawings, refer to sheet SKM-1. COVER SHEET (PACKAGE 1B) G Deleted drawings, refer to sheet SKM Item No. AD Item No. AD Item No. AD Item No. AD Item No. AD Item No. AD1-8 FIRST FLOOR PLAN M Removed Eco Bee thermostat and revised to read manufacturer recommended, refer to sheet SKM-3. SECOND FLOOR PLAN M Removed Eco Bee thermostat and revised to read manufacturer recommended, refer to sheet SKM-4. ROOF PLAN M Added smoke detector compatibility requirements, refer to sheet SKM-5. DETAILS M Water heater nomenclature corrected, refer to sheet SKM-6. SCHEDULES M Added smoke detector compatibility requirement, refer to sheet SKM-7. CONTROL DIAGRAMS M Removed note 6 from sequence of operation. Removed Internet connection to thermostat in diagram. Removed in note 1 the Eco-Bee thermostat and replaced with smart programmable thermostat per unit manufacturer, refer to sheet SKM-8. Page 2 of 6

3 9. Item No. AD Item No. AD Item No. AD Item No. AD Item No. AD Item No. AD Item No. AD Item No. AD Item No. AD Item No. AD Item No. AD Item No. AD Item No. AD1-21 UPPER LEVEL PLAN, WEST WING-DEMO M5.1.02D Displaying new demo requirements for legacy thermostat, refer to sheet SKM-9. UPPER LEVEL PLAN, WEST WING-DEMO M5.1.03D Displaying area with no mechanical work, refer to sheet SKM-10. DETAILS M Details removed, refer to sheet SKM-11. SCHEDULES M Mechanical schedules deleted, refer to sheet SKM-12. PARTIAL FLOOR PLAN A - HVAC M VFD-related controls removed from the scope, refer to sheet SKM-13. PARTIAL MECHANICAL MEZZANINE PLAN A M VFD and VFD-compatible fan motor removed from the scope, refer to sheet SKM-14. PARTIAL MECHANICAL BASEMENT PLAN A M VFD and VFD-compatible fan motor removed from the scope, refer to sheet SKM-15. SCHEDULES M VFD-related schedules removed from the scope, refer to sheet SKM-16. LEGEND, SYMBOLS AND GENERAL NOTES M Added general note, refer to sheet SKM-17. ROOF PLAN HVAC DEMOLITON M4.1.03D Added sheet note, refer to sheet SKM-18. COVER SHEET (PACKAGE 1B) G Deleted drawings, refer to sheet SKE-1. SITE PLAN DEMOLITION E4.1.01D Deleted scope of work, refer to sheet SKE-2. SITE PLAN ELECTRICAL E Deleted scope of work and sheet notes, refer to sheet SKE-3. Page 3 of 6

4 22. Item No. AD1-22 FIRST FLOOR PLAN DEMOLITION E4.2.01D Added sheet note and tag, refer to sheet SKE Item No. AD1-23 SYMBOLS AND ABBREVIATIONS E Revised occupancy sensor symbol description, refer to sheet SKE Item No. AD Item No. AD Item No. AD Item No. AD Item No. AD1-28 GROUND LEVEL PLAN WEST WING- DEMOLITION E5.2.01D Deleted mechanical/plumbing scope of work, refer to sheet SKE-6 GROUND LEVEL PLAN WEST WING, ELECTRICAL E Deleted mechanical/plumbing scope of work, refer to sheet SKE-7 PARTIAL FLOOR PLAN A - DEMOLITION E6.2.01D Deleted mechanical/plumbing scope of work, refer to sheets SKE-8, and SKE-9. PARTIAL FLOOR PLAN A - ELECTRICAL E Deleted mechanical/plumbing scope of work, refer to sheets SKE-10 and SKE-11. FLOOR PLAN C SECURITY VIDEO ENTRY TS Revised location of device, refer to sheet SKT-1. Page 4 of 6

5 RFI REPONSES 1. Question: Do you have the model numbers of the existing A/C units to be replaced at Ulloa ES and Chief Academic Offices? Response: Ulloa ES: Carrier Model 50HJQ SN: 1705G40471 Chief Academic Offices: AAON 10 TON SN: A Question: Who is existing EMS system provider/contractor? Response: Controls contractor will be selected through bid process. 3. Question: The electrical symbol for wall mounted occupancy sensor tells us to see Sheet E2.15 for specification, but which is not existed. Please specify this product. Response: Updated symbol to indicate specified occupancy sensor, refer to sheet SKE-5 ATTACHMENTS: Project Manual: Division Drawings: AD1-SKM1 AD2-SKM2 AD3-SKM3 AD4-SKM4 AD5-SKM5 AD6-SKM6 AD7-SKM7 AD8-SKM8 AD9-SKM9 AD10-SKM10 AD11-SKM11 AD12-SKM12 AD13-SKM13 AD14-SKM14 AD15-SKM15 AD16-SKM16 AD17-SKM17 AD18-SKM18 AD19-SKE1 AD20-SKE2 AD21-SKE3 AD22-SKE4 AD23-SKE5 AD24-SKE6 AD25-SKE7 AD26-SKE8, SKE9 AD27-SKE10, SKE11 4 Pages 2 Pages 2 Pages Page 5 of 6

6 AD28-SKT1 END OF ADDENDUM ITEMS Page 6 of 6

7 PART 1 GENERAL SECTION ROOFING REPAIR 1.01 SECTION INCLUDES A. Provide all labor, equipment, and materials to maintain and protect the existing roof system RELATED SECTIONS A. Section Sheet Metal Flashing and Trim: Sheet metal flashing and trim SYSTEM DESCRIPTION A. Roofing work including but not limited to: 1. Flashing installation at new penetrations. 2. Repair of damaged or deteriorated flashing. 3. Install fill insulation where needed, one ply of base sheet and modified cap sheet per detail. 4. All flashings to consist of one ply of base sheet set in mastic covered by an additional layer of modified bitumen membrane. 5. Flood and gravel PERFORMANCE REQUIREMENTS A. Make roof weathertight and watertight. All drainage to flow off roof, do not permit standing water SUBMITTALS A. See Section Submittals, for submittal procedures. B. Product Data: Provide manufacturer's data sheets documenting conformance with specified requirements. C. Manufacturer's Field Reports: Indicate deviations or deficiencies observed during site visits, record method of resolution. D. Warranty: Submit manufacturer warranty and ensure that forms have been completed in Owner's name and registered with manufacturer QUALITY ASSURANCE A. Manufacturer Qualifications: Company specializing in manufacturing products specified in this section, with not less than five years of documented experience. 1. Manufacturer will inspect completed work. B. Installer Qualifications: Company specializing in performing the work of this section and approved by manufacturer. 1. Installer's Field Supervision: Require Installer to maintain a full-time Supervisor/Foreman on job site during all phases of bituminous sheet roofing work and at any time roofing work is in progress, proper supervision of workmen shall be maintained. A copy of the specification shall be in the possession of the Supervisor/Foremen and on the roof at all times. C. Respond immediately to correction of roof leakage during construction. If the contractor does not respond within 24 hours, the Owner has the right to hire a qualified contractor and backcharge the original contractor PRE-INSTALLATION MEETING A. Convene two weeks before starting work of this section. Meet at Project site with Installer, installer of each component of associated work, installers of deck or substrate construction to receive roofing work, installers of rooftop units and other work in the around roofing that must precede or follow roofing work (including mechanical work if any), Architect/Owner, roofing system manufacturer's representative, and other representatives directly concerned with performance of the Work, including (where applicable) Owner's insurers, test agencies, and governing authorities. Objectives to include: ROOFING REPAIR

8 B. Review preparation and installation procedures and coordinating and scheduling required with related work. 1. Review methods and procedures related to roofing work. 2. Review structural loading limitations of deck. 3. Review roofing systems requirements (drawings, specifications, and other contract documents). 4. Review required submittals, both completed and yet to be completed. 5. Review and finalize construction schedule related to roofing work and verify availability of materials, Installer's personnel, equipment, and facilities needed to make progress and avoid delays. 6. Review required inspection, testing, certifying, and material usage accounting procedures. 7. Review weather and forecasted weather conditions and procedures for coping with unfavorable conditions, including provision of temporary roofing over occupied spaces. 8. Record discussion of conference, including decisions and agreements (or disagreements) reached, and furnish copy of record to each party attending. If substantial disagreements exist at conclusion of conference, determine how disagreements will be resolved and set date for reconvening conference. 9. Review notification procedures for weather or non-working days DELIVERY, STORAGE, AND PROTECTION A. Deliver products to site with seals and labels intact, in manufacturer's original containers, dry and undamaged. B. Store and handle roofing materials in a dry, well-ventilated, weather-tight place to ensure no possibility of significant moisture exposure. Store rolls of felt and other sheet materials on pallets or other raised surface. Stand all roll materials on end. Cover roll goods with a canvas tarpaulin or other breathable material (not polyethylene). C. Do not leave unused rolled goods on the roof overnight or when roofing work is not in progress unless protected from weather and other moisture sources. D. Contractor shall secure all material and equipment on the job site. If material or equipment is stored on the roof, the contractor shall ensure that the integrity of the deck is not compromised at any time. Damage to the deck caused by the contractor will be the sole responsibility of the contractor and will be repaired or replaced at his expense PROJECT CONDITIONS A. Coordinate roof repair installation with size, location and installation of roof mounted work ENVIRONMENTAL REQUIREMENTS A. Weather Condition Limitations: Do not apply materials during inclement weather or when a 40% chance of precipitation is expected. B. Materials shall be stored at room temperature until immediately prior to application when the ambient temperature is 40 F or below. Discontinue the application if the material can not be stored at a temperature which permits even distribution during application. C. Do not expose materials vulnerable to water or sun damage in quantities greater than can be weatherproofed during same day WARRANTY A. Correct defective Work within two year period after Date of Substantial Completion. B. Provide two year contractor warranty for roof repair. C. Provide letter from manufacturer with original warranty number and approval of repair work. PART 2 PRODUCTS 2.01 MATERIALS as Manufactured by The Garland Company, A. Base Ply and Base Flashing Ply: Stressbase 80. B. Field membrane: Stressply Plus, 105 mil SBS (Styrene-Butadiene-Styrene) smooth surfaced rubber modified roofing membrane reinforced with a dual fiberglass scrim and polyester mat, ASTM D-6162 Type III Grade G ROOFING REPAIR

9 C. Modified Flashing Ply: 135 mil SBS (Styrene-Butadiene-Styrene) mineral surfaced rubber modified roofing membrane reinforced with a dual fiberglass scrim and polyester mat, ASTM D-6162 Type III Grade G. D. Asphalt Primer: V.O.C. compliant, ASTM D-41. E. Roofing Mastic: V.O.C. compliant, Greenlock Flashing Adhesive. F. Reinforcing Fabric: Fiberglass Mesh G. Flood coat adhesive: White Star. H. Gravel: 3/8 white spar from A-1 Grit. I. Insulation: ½ DensDeck Prime from Georgia Pacific. K. Insulation adhesive: Insul-Lock II urethane foam adhesive. PART 3 EXECUTION 3.01 EXAMINATION A. Examine substrate surfaces to receive roofing system and associated work and conditions under which roofing will be installed. Do not proceed with roofing until unsatisfactory conditions have been corrected in a manner acceptable to Roof System Manufacturer and Installer INSTALLATION A. Spud gravel back from edge of cut in existing roof a minimum of 18. B. All plies will be adhered with the following: 1. With mastic. The base flashing and the modified membrane will be used as the flashing and nailed off 8" O.C. at all vertical surfaces. D. The entire sheet of the base flashing and the flashing membrane must be solidly adhered to the substrate. E. Seal all vertical laps of flashing membrane with a three-course application of Greenlock Flashing Adhesive and fiberglass mesh. F. Seal junction of flashing membrane and roof with a three-course application of Greenlock Flashing Adhesive and mesh. G. Install all work in accordance with manufacturer's instructions. H. Flood and gravel up to the base of the cant INTERFACE WITH OTHER WORK A. Coordinate with roof accessories, miscellaneous sheet metal accessory items, including piping vents and other devices to be coordinated with the roofing work as specified in other sections to avoid conflict or omission in waterproofing systems and to provide watertight installation FIELD QUALITY CONTROL A. At completion of roofing installation and associated work, meet with Installer, installer of associated work, Owner, roofing system manufacturer's representative, and other representatives directly concerned with performance of roofing system. B. Walk roof surface areas of the building, inspect perimeter building edges as well as flashing of roof penetrations, walls, curbs and other equipment. List all items requiring correction or completion and furnish copy of list to each parting attending. C. The Roofing System Manufacturer reserves the right to request a thermographic scan of the roof during final inspection to determine if any damp or wet materials have been installed. The thermographic scan shall be provided by the Roofing Contractor at a negotiated price. D. If core cuts verify the presence of damp or wet materials, the Roofing Contractor shall be required to replace the ROOFING REPAIR

10 damaged areas at his own expense. E. Repair or replace (as required) deteriorated or defective work found at time above inspection to a condition free of damage and deterioration at time of Substantial Completion and according to warranty requirements. F. The Contractor is to notify the Owner upon completion of corrections. G. Following the final inspection, acceptance will be made in writing by the material manufacturer CLEANING and PROTECTION A. Clean roof and surrounding surfaces. B. Protect installed work from subsequent construction operations. C. Do not permit traffic over unprotected roof surface. END OF SECTION ROOFING REPAIR

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39 FILE No REFERENCE DWG: TS SCALE SITE NO. SFUSD FACILITIES DESIGN & CONSTRUCTION 135 Van Ness Avenue San Francisco, California TEL. (415) FAX (415) PROJECT ADDRESS DATE S.F.U.S.D. PROJECT NUMBER SHEET NUMBER SKT-1