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Home My WebLink About11-1350-Projection-Screens_Rev_1Dennis Yarmouth Intermediate Middle School January 19, 2021 Dennis Yarmouth Regional School District 100% Construction Documents Perkins Eastman DPC, project #71011 11 1350 Projection Screens 1 of 5 Section 11 1350 PROJECTION SCREENS PART 1 - GENERAL 1.1 GENERAL PROVISIONS A. Attention is directed to the CONTRACT AND GENERAL CONDITIONS and all Sections within DIVISION 01 - GENERAL REQUIREMENTS which are hereby made a part of this Section of the Specifications. B. Examine all other Sections of the Specifications for requirements that affect work of this Section whether or not such work is specifically mentioned in this Section. C. Coordinate work with that of all other trades affecting or affected by work of this Section. Cooperate with such trades to assure the steady progress of all work under the Contract. 1.2 EXAMINATION OF SITE AND DOCUMENTS A. Bidders are expected to examine and to be thoroughly familiar with all contract documents and with the conditions under which work will be carried out. The Awarding Authority (Owner) will not be responsible for errors, omissions and/or charges for extra work arising from General Contractor's or Trade Contractor's failure to familiarize themselves with the Contract Documents or existing conditions. By submitting a bid, the Bidder agrees and warrants that he has had the opportunity to examine the site and the Contract Documents, that he is familiar with the conditions and requirements of both and where they require, in any part of the work a given result to be produced, that the Contract Documents are adequate and that he will produce the required results. 1.3 RELATED DOCUMENTS A. Refer to AV series drawings and project architectural, structural and electrical drawings for information related to the work specified herein. B. Examine all Drawings and other Sections of the Specifications for requirements therein affecting the work of this trade. 1.4 SECTION INCLUDES A. Electrically operated projection screen, controls, accessories and mounting hardware. B. Fixed, recessed, electrically operated projection screen, controls, accessories and mounting hardware. Dennis Yarmouth Intermediate Middle School January 19, 2021 Dennis Yarmouth Regional School District 100% Construction Documents Perkins Eastman DPC, project #71011 11 1350 Projection Screens 2 of 5 1.5 RELATED SECTIONS: A. Section 27 4116 - Integrated Audio-Visual Systems and Equipment B. Division 26 – Electrical Work 1.6 REFERENCES A. Society of Motion Picture and Television Engineers (SMPTE): 1. SMPTE RP 94-2000 - Gain Determination of Front Projection Screens. 1.7 DEFINITIONS A. Gain: Indication of screen's luminance or brightness measured perpendicular of screen center and measured relative to a block of magnesium carbonate which serves as the standard for 1.0 gain. Higher numbers indicate greater brightness. Gain shall be determined in accordance with SMPTE RP 94-2000. B. Viewing angle: Angle from perpendicular center of screen at which the gain or brightness is decreased by 50 percent. C. Keystone: Distortion of projected image when screen is not perpendicular with center line of projected image. 1.8 COORDINATION A. Employ labor compatible with all on-site trades. B. Attend regular project meetings as scheduled by the General Contractor or Architect. C. Coordinate with the schedule of general construction work by others. 1.9 SUBMITTALS A. Provide submittals in accordance with requirements of Section 01 3300 – Submittal Procedures and as detailed herein. 1. Product data for projection screens and accessories. 2. Shop drawings: Indicate dimensions, fabrication and installation details, and electric wiring diagrams. 3. Samples: a. Finishes for selection by Architect. b. Viewing surface: 6 by 6 inches minimum size. 4. Manufacturer's installation, operation, maintenance, and cleaning instructions. 5. Site-specific installation and suspension details. 1.10 QUALITY ASSURANCE A. Manufacturer qualifications: Firm with 30 years minimum successful experience manufacturing electric projection screens. Dennis Yarmouth Intermediate Middle School January 19, 2021 Dennis Yarmouth Regional School District 100% Construction Documents Perkins Eastman DPC, project #71011 11 1350 Projection Screens 3 of 5 B. Motors for electric screens shall be certified by Underwriters Laboratory (UL), Inc. and shall bear UL label. 1.11 DELIVERY, STORAGE, AND HANDLING A. Deliver projection screens after building is enclosed and construction in rooms where screens will be installed is substantially complete. B. Deliver screens in manufacturer's undamaged, labeled packaging. PART 2 - PRODUCTS 2.1 GENERAL A. All equipment and materials shall be new, latest version at time of bid, and shall conform to applicable UL, CSA or ANSI provisions. Re-manufactured or “B” stock equipment will not be accepted without prior written consent from the Owner. Evidence of unauthorized re- manufactured, or “B” stock equipment on the project site will be deemed evidence of the Contractor’s Failure to Perform the Work. Care should be taken during installation to prevent damage (scratches, dents, chips, and disfiguration) to the equipment. B. Accessories 1. Installation hardware: Provide all additional attachment hardware, fasteners, and other components of type, size, and spacing recommended by manufacturer for complete, functional, secure installation of electric screen. 2.2 LARGE MOTORIZED FRONT PROJECTION SCREEN A. Acceptable Manufacturers 1. Da-Lite, Inc. 2. Draper 3. Stewart Filmscreen B. Screen 1. Type: Electrically operated, tensioned, retractable, projection screen for recessed use a. Model: Tensioned Large Advantage Electrol 1) Mounting: Recessed in proscenium 2) Permanently attach screen fabric to roller. 3) Motor Option: Silent motor 4) Closure doors: none 5) Viewing surface: HD Progressive 1.1 a) Gain: 1.1 b) Viewing Half Angle: 85 degrees c) Size: per Drawings d) Provide with black masking bottom and sides: 3 inches e) Black drop: per drawings C. Control 1. Provide with low-voltage control option Dennis Yarmouth Intermediate Middle School January 19, 2021 Dennis Yarmouth Regional School District 100% Construction Documents Perkins Eastman DPC, project #71011 11 1350 Projection Screens 4 of 5 D. Coordinate room control system interface with Audiovisual Systems Contractor. 1. Up/down/stop control switch. PART 3 - EXECUTION 3.1 COORDINATION A. Coordinate provision of electric screens with locations of other wall and ceiling mounted components such as visual display boards, casework, structural framing, light fixtures, air diffusers, ducts, and fire sprinklers to eliminate potential conflicts. B. Coordinate requirements for blocking and auxiliary structural supports to ensure adequate means for installation of screens. C. Coordinate requirements for power supply, conduit, and wiring required for electric screen and controls. D. Prior to installation, verify type and location of power supply. 3.2 INSTALLATION A. Install screens in accordance with approved shop drawings and manufacturer's installation instructions. B. Install projection screens at locations and heights indicated on Drawings. Verify locations in field with Architect. C. Install screens securely to supporting substrate so that screens are level and back of case is plumb. D. Adjust screen to be perpendicular to centerline of video projector beam. E. Set limit switches to position screen as shown on the Drawings. 3.3 TESTING AND PROTECTING A. Operate each screen three times minimum. Ensure screens properly extend and retract and that screen is level and viewing surface plumb when extended. Verify controls, limit switches, and other operating components are functional. Adjust to correct deficiencies. B. Projection surfaces shall be free from wrinkles. C. Protect projection screens from damage during subsequent construction activities. Remove and replace damaged screens. End of Section Dennis Yarmouth Intermediate Middle School January 19, 2021 Dennis Yarmouth Regional School District 100% Construction Documents Perkins Eastman DPC, project #71011 11 1350 Projection Screens 5 of 5 (THIS PAGE IS BLANK)