This Addendum includes the following changes and clarifications to the Contract Documents:

Transcription

1 August 17, 2018 IFB#: IFB Closing on: August 28, 2018 ADDENDUM NO. FIVE TO THE CONTRACT DRAWINGS AND SPECIFICATIONS FOR THE REFERENCED PROJECT, DATED JULY 11, 2018, AS PREPARED BY GRIMM + PARKER ARCHITECTS, 123 EAST MAIN STREET, 2 ND FLOOR, CHARLOTTESVILLE, VA and as previously amended, This Addendum includes the following changes and clarifications to the Contract Documents: CHANGES TO SPECIFICATIONS: ITEM NO. 1: MODIFY: TABLE OF CONTENTS Add the following entry to the Table of Contents: IT CABLE SYSTEM ITEM NO. 2: SECTION EMERGENCY GENERATOR Entire section Section attached. ITEM NO. 3: SECTION EMPTY CONDUIT SYSTEM Entire section Section attached. ITEM NO. 4: ADD: SECTION IT CABLE SYSTEM Section attached CHANGES TO DRAWINGS: ITEM NO. 5: SHEET M101 FIRST FLOOR PART A & SECOND FLOOR HVAC PLANS

2 Shenandoah County Sheriff s Office Addendum No. 5 Page 2 of 3 Sheet M101. Revisions are clouded and identified as Add 5 to include: - Ductwork revisions for ceiling height and wall location coordination. - Additional fire damper location. - Mounting height clarification at FCU. ITEM NO. 6: SHEET P101 1ST FLOOR PART SANITARY/STORM - AREA A Sheet P101. Revisions are clouded and identified as Add 5 to include: - Pipe relocations for coordination with existing construction and architectural plan. - Addition of air admittance valve (AAV). - Connection for sink at room 160. ITEM NO. 7: SHEET P102 1ST FLOOR WATER PLAN - AREA A Sheet P102. Revisions are clouded and identified as Add 5 to include: - Pipe relocations for coordination with existing construction and architectural plan. - Connection for sink at room Addition of yard hydrant on site. - Addition of fire system audible alarm at Sprinkler Room. ITEM NO. 8: SHEET P103 1ST FLOOR GAS PLAN - AREA A Sheet P103. Revisions are clouded and identified as Add 5 to include: - Pipe routing change to avoid stairwell. ITEM NO. 9: SHEET P201 ROOF STORM PLAN Sheet P201. Revisions are clouded and identified as Add 5 to include: - Overflow roof drain line relocations to coordinate with architectural. ITEM NO. 10: SHEET P301 PLUMBING RISERS Sheet P301. Revisions are clouded and identified as Add 5 to include: - Coordination of floor drain sizes and site hydrant. ITEM NO. 11: SHEET E001 ELECTRICAL SCHEDULES, DIAGRAMS & RISER

3 Shenandoah County Sheriff s Office Addendum No. 5 Page 3 of 3 Sheet E001. Revisions are clouded and identified as Add 5 to include: - Power Riser Diagram updates. ITEM NO. 12: SHEET E002 ELECTRICAL PANEL SCHEDULES Sheet E002. Revisions are clouded and identified as Add 5 to include: - Panel Schedule updates ITEM NO. 13: SHEET E101 FIRST FLOOR AREA A POWER PLAN Sheet E101. Revisions are clouded and identified as Add 5 to include: - Power and cable/data location changes. ITEM NO. 14: SHEET E102 FIRST FLOOR AREA B AND SECOND FLOOR POWER PLANS Sheet E102. Revisions are clouded and identified as Add 5 to include: - Power and cable/data location changes. ITEM NO. 15: SHEET E201 FIRST FLOOR AREA A SYSTEMS PLAN Sheet E201. Revisions are clouded and identified as Add 5 to include: - Additional system connections. ITEM NO. 16: SHEET E401 FIRST FLOOR AREA A LIGHTING PLAN Sheet E401. Revisions are clouded and identified as Add 5 to include: - Additional lights at EC07. ITEM NO. 17: SHEET E501 SITE ELEC. & PHOTOMETRIC PLAN Sheet E501. Revisions are clouded and identified as Add 5 to include: - Revised exterior lighting at building entry. - Revised information for future shed power and for transformer coordination. END OF ADDENDUM NO. 5

4 SECTION EMERGENCY GENERATOR 1. GENERAL 1.1 WORK INCLUDED A. Emergency Generator 1.2 RELATED WORK A. Concrete B. Automatic Transfer Switch 1.3 QUALITY ASSURANCE A. Installer Qualifications: Manufacturer's authorized representative who is trained and approved for installation of units required for this Project. 1. Maintenance Proximity: Not more than four hours' normal travel time from Installer's place of business to Project site. B. Manufacturer Qualifications: A qualified manufacturer. Maintain, within 200 miles of Project site, a service center capable of providing training, parts, and emergency maintenance repairs. C. Source Limitations: Obtain packaged generator sets and auxiliary components through one source from a single manufacturer. D. Electrical Components, Devices, and Accessories: Listed and labeled as defined in NFPA 70, Article 100, by a testing agency acceptable to authorities having jurisdiction, and marked for intended use. E. Comply with ASME B15.1. F. Comply with NFPA 37. G. Comply with NFPA 70. H. Comply with NFPA 99. I. Comply with NFPA 110 requirements for Level 1 emergency power supply system. J. Comply with UL K. Engine Exhaust Emissions: Comply with applicable state and local government requirements. L. Noise Emission: Comply with applicable state and local government requirements for maximum noise level at adjacent property boundaries due to sound emitted by generator set including engine, engine exhaust, engine cooling-air intake and discharge, and other components of installation. M. The supplier shall provide all installation and test supervision necessary for final approval and acceptance. N. Generator shall meet all EPA requirements for emissions at the time of installation. 2. PRODUCTS 2.1 EMERGENCY GENERATOR A. Provide standby power systems for the supply of power in the event of failure of normal supply, consisting of diesel engine-driven generator set of the latest commercial type and design. All material and equipment shall be new and undamaged and shall meet the requirements of NFPA-110 standards. Install generator set and accessories outside and shall be weather enclosed. B. Provide fully automatic operation so that unit takes full load within 10 seconds after power failure per NFPA 110 for Level 1 Applications. On resumption of normal power after time delay on transfer switch, automatically retransfer load to normal power and automatically shut down generator, load to normal power and automatically shut down generator, returning to starting condition ready for another operating cycle. EMERGENCY GENERATOR

5 C. Generator shall not extend beyond the foot print as shown on the current architectural drawings. Fuel tank shall be constructed as to provide a walkway for accessing the generator enclosure. D. Provide the engines with antifreeze (a solution of 50% ethylene glycol) and suitable unit mounted immersion type 1500W jacket water heater(s) incorporating a thermostatic switch to maintain engine jacket water at 90 degrees F, in an ambient temperature of 0 degrees F. E. The unit shall be equipped with two main line molded case, three-pole, single throw circuit breakers rated at 104 degree F (40 degree C) ambient temperature. The breakers shall be installed for three phase overloads and/or short circuit protection. They shall operate both manually for normal switching functions and automatically during overload and short circuit conditions. The trip unit for each pole shall have elements providing inverse time delay during overload conditions and instantaneous magnetic tripping for short circuit protection. The circuit breaker shall meet standards established by Underwriter Laboratories (UL), National Electric Manufacturers Association, and National Electric Code. The breakers shall be sized per drawings and 100% rated. F. Standby KW rating as shown on the plans and equipped with: 1. Rated for 130 degree C rise HZ, 3 phase, 4 wire, 120/208 volts hour runtime at full load minimum belly tank with extra capacity for testing. a. Fuel tank shall comply with all applicable codes and standards. 4. Load bank testing breakers as required for full testing operations. 5. Level 2 sound attenuated enclosure. 6. All accessories required or recommended by the references or the manufacturer shall be provided. G. Engine shall be stationary, liquid cooled, Diesel fired with the following: volt, solenoid shift electric starter. 2. Positive displacement oil pump, replaceable oil filter elements, pressure relief valve, dipstick and oil drain valve with extension hose. 3. Replaceable heavy duty air cleaner. 4. Mechanical governing system to control system frequency. 5. Thermostatically controlled jacket heater. 6. Engine starter battery charging alternator and solid state voltage regulator. 7. Engine mounted radiator with belt driven fan, coolant pump and thermostatic temperature control. 8. Exhaust muffler with critical silencer and flexible connectors. 9. Manual reset exciter field circuit breaker. 10. Battery rack with 12 volt starting batteries, cables and connectors. Alternator strip heater. 11. Engine mounted vibration isolators. 12. Outdoor protective housing with removable side panels and hinged door for instrument panel access. Sound attenuated enclosure, 75DBA at 23'-0" under 100% load. 13. Incoming mainline circuit disconnect switches as shown on plans. 14. Fuel regulators. H. Generator Control Panel: 1. Enclose the generator control panel in a generator mounted unit interwired with automatic start. The instruments and control shall include the following: a. Digital instruments, including ammeter, voltmeter, frequency meter, tachometer, and hour meter. Auto start stop control module with cycle crank and cooldown. Phase selector switch. Engine control switch for auto, start/run, off/reset, stop. Digital oil pressure and water temperature gauges. Shutoffs with indicators for low oil pressure, high water temperature, overspeed, overcrank, and emergency stop pushbutton. Voltage adjust rheostat. System diagnostic codes digital readout. Lamp display. D.C. panel illumination lights with switch. Connections for remote annunciation of low oil pressure prealarm, high water temperature prealarm, low EMERGENCY GENERATOR

6 water temperature, battery charger malfunction, low fuel level, and engine running in accordance with NFPA Provide automatic engine starting controls to meet the following: a. To automatically start and stop the engine generator plant. b. When engine fires, starting control shall automatically disconnect cranking controls. The cranking disconnect means shall be electrically self regulating to a low level. If engine fails to start, or any safety device should operate while engine is running, engine shall be stopped immediately and the starting controls locked out, requiring manual resetting. c. Arrange starting controls so that cranking shall start immediately upon closing of a single pole contact in the automatic transfer switch. I. Generac or the equivalent by: 1. Kohler 2. Cat 3. Onan 4. MTU 5. Detroit Diesel 2.2 REMOTE ANNUNCIATOR A. Provide a 21-Light NFPA99/110 Approved Remote Annunciator for the Generator. Annunciator must be able to be placed up to 500 feet from generator. Installation to be the responsibility of the installing contractor. Setup and Programming by Generator Supplier personnel. B. Audio/visual alarm remote annunciator with the following: 1. Alarm silence and lamp test switch. 2. LED annunciator lamps as follows: a. High battery voltage. b. Low battery voltage. c. Normal battery voltage. d. Generator running. e. Normal utility power. f. Genset supplying power. g. Pre-low oil pressure. h. Low oil pressure. i. Pre-high coolant temperature. j. High coolant temperature. k. Low engine temperature. l. Overspeed. m. Overcrank. n. Not in automatic. o. Battery charger malfunction. p. Low fuel. q. Owner selected fault. 3. EXECUTION 3.1 INSTALLATION A. Install emergency generator and accessories in accordance with the manufacturer's requirements. Installation: Install unit complete and make operational. B. Generator shall be completely field wired and connected. C. Coordinate routing of feeder and branch circuits with other trades to provide an efficient and wellcoordinated layout. D. Wiring and Connections: 1. Provide conduit, wiring and connections required and recommended by unit supplier. 2. Install all power and alarm wiring in rigid metal conduit. EMERGENCY GENERATOR

7 3. Provide grounding at generator. Where 4-pole automatic transfer switches are utilized, connect neutral point of generator by green insulated copper conductor. Installation shall be in conformance with the currently enforced NEC, Article 250, for grounding of separately derived system. E. Provide a sign at the service entrance equipment indicating the type and location of on-site emergency power sources per NEC F. Where the grounded circuit conductor connected to the emergency source is connected to a grounding electrode conductor at a location remote from the emergency source, provide a sign at the grounding location that shall identify all emergency and normal sources connected at that location. Provide this sign for generator installations where the neutral conductor is not switched by the transfer switch. G. Provide rebar reinforced concrete pad for emergency generator as recommended by the manufacturer. H. Fill all engine fluids. I. Leave generator with full tank of fuel. J. All materials, equipment and parts comprising the units shall be new and unused, of current manufacturer and of highest grade, free from all defects or imperfections affecting performance. Workmanship shall be of the highest grade in accordance with modern practice. K. The design and construction of the electric set shall be such that it is neat and clean in appearance, and the normal adjustments and maintenance can be effected without the use of special tools. 3.2 START-UP AND TESTING A. Initial start-up shall be performed by a factory-trained representative of the emergency generator manufacturer. B. Provide the manufacturer's standard certified testing at the factory. Prior to acceptance of the installation, field test the equipment to demonstrate it will start automatically, and subject it to a full load test, shut down and reset as indicated herein. C. Correct, prior to acceptance, any defect that becomes evident during this test. Perform the test in accordance with the following requirements and include any other tests that may be recommended by the manufacturer for the purpose of evaluation. 1. Load Bank Testing shall be per NFPA 110 Standards. The Resistive Loadbank shall be furnished by the provider of the Generator. 2. Fuel for Testing is the responsibility of the Contractor. 3. Submit a full written certified test report indicating BHP developed, KW output, voltage, current and frequency variations to the Engineer for evaluation and disposition. Perform all tests in the presence of the Owner's authorized representatives and the manufacturer's representative, who both shall validate the report. D. Engine generator set shall have sufficient capacity to pick up the specified full load and stabilize within +5% of rated frequency within 10 seconds after loss of normal power. E. Visit installation prior to the required start-up and testing. Review installation for pressure, pipe sizes and proper regulator installation. Contractor is fully responsible for any changes or modifications in fuel system prior to start-up and testing. 3.3 DEMONSTRATION A. Engage a factory-authorized service representative to train Owner's maintenance personnel to adjust, operate, and maintain packaged engine generators. B. On completion of the installation, provide the initial start up by a factory-trained representative of the engine supplier. At the time of start up, explain operating instructions and maintenance procedures to the Owner's operating personnel. The factory-trained representative shall provide a minimum of 4 hour of operating and maintenance instructions to the Owner's operating personnel, which shall include the generator and associated equipment. END OF SECTION EMERGENCY GENERATOR

8 SECTION EMPTY CONDUIT / CABLE TRAY SYSTEMS 1. GENERAL 1.1 WORK INCLUDED A. Equipment Spaces B. Conduit for cable systems C. Cable tray systems 1.2 RELATED WORK A. Raceways and Fittings 2. PRODUCTS 2.1 COMPONENTS A. Conduit and Boxes 1. Refer to appropriate Sections. B. Pull cord 1. Polypropylene rope. C. Equipment Space 1. 3/4", fire rated plywood, smooth one side, full 8'-0" high, width as shown on the drawings. D. Cable Tray 1. B-line flextray system or equal, basket type tray, 4 deep, width as indicated on the plans. 2. Center post type supporting. 3. Electroplated zinc galvanized finish 3. EXECUTION 3.1 CONDUIT INSTALLATION A. Install as shown on plans. B. Provide pull string in conduits. C. Paint all sides and edges of equipment space with 2 coats of gray enamel paint prior to installation. D. At project closeout, provide blank coverplates for rough-ins not utilized by the Owners cabling contractors. 3.2 CABLE TRAY INSTALLATION A. Run #4 ground wire alongside of tray and attach to each section and on each side of cut in accordance with NEMA standards. B. Install in strict accordance with the manufacturer s recommendations. C. Support at a minimum of 5-0 on center. D. Coordinate with sprinkler piping, ductwork, and structural members that may be encountered. Cable tray shall be routed to be as accessible as possible below all other trades. END OF SECTION EMPTY CONDUIT / CABLE TRAY SYSTEMS

9 SECTION IT CABLE SYSTEM 1. GENERAL 1.1 WORK INCLUDED A. Category 6E Cable B. Coax Cable C. Fiber Cable D. Jacks and Trim E. Labeling F. Testing 1.2 RELATED WORK A. Section Raceways and Fittings B. Section Wire and Cable C. Section Boxes D. Section Empty Conduit/Cable Tray System 2. PRODUCTS 2.1 VOICE AND DATA A. Category 6E Cable and 24 strand single mode fiber cables. B. All equipment required for a complete turnkey system Provide all equipment required for a complete system, including but not limited to bulk cable, patch panels, patch cables, wiring blocks and jacks. C. Jacks shall be category 6, dual or quad port wall or in floor box as detailed below. 2.2 TELEVISION A. RG-6 low loss coax 3. EXECUTION 3.1 INSTALLATION A. ECC Server Room EC15 serves only the rooms which are part of the ECC suite. All other areas of the building shall be served from Server Room 115B. B. Pull Cat. 6E cables from the respective server room serving that area to the communications outlets. C. In general pull (2) Cat. 6E cables to each communications outlet except as follows: a. Pull (4) Cat. 6E cables to each low wall outlet in Dispatch Room EC09, IT Office EC14, and Supervisor Office EC09A. b. Pull (3) Cat. 6E and (1) Coax cable to each high wall display/monitor outlets. D. Pull fiber from main wiring backboard in Elec 146U to each server room. E. Pull (1) coax and (3) Cat. 6 cables from each television outlet to the wiring backboard serving that area, provide coax between server room boards and on to the main board in Elec. 146U. F. Cabling system shall be fully tested and certified. G. Provide and install coverplates for all communications outlets matching terminations present at each outlet. H. Label each coverplate and each end of cable for easy identification. I. Provide an additional 5 feet of wiring at each cable pull end, neatly coiled and tied. J. Provide all plugs, accessories, etc. as required for connecting to owner s patch-thru boxes. K. Provide HDMI cable from each projector location and wall monitor location to multi-media box. (1) multi-media box shall be located in the following rooms: Command Conference Room, ECC Conference Room, and Training Room. Verify the location of multi-media box in the room with the owner prior to rough-in. IT CABLE SYSTEM

10 END OF SECTION IT CABLE SYSTEM