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MULTI-PURPOSE SOUND SYSTEM Section 16780 15-1207 4. Care shall be required during the mounting of any device located overhead. A structural engineer shall verify the quantity and quality of all components required to construct the speaker mounts. The mounting details shall be provided by the audiovisual contractor. A structural engineer shall review the grade of hardware including bolts, gauge of all steel plates, and size of Uni-Strut required for proper speaker mounting. E. Equipment installation: 1. At each rack, provide a full -height Multi -circuit ISOLATED GROUND outlet strip with outlets ready to be served by there own branch circuits via a junction box in the bottom of the rack. The outlet strip and box shall be electrically continuous within the rack. Isolate all conduits entering the rack with plastic couplings. The rack must not be connected to the building conduit system in any way. 2. Firmly secure all equipment racks to the wall or floor. Conform to local building codes for seismic safety requirements. Restraining devices shall in no way provide an electrical and or signal ground for the -equipment rack. 3. Where accessible, provide each equipment rack with a locking rear door, including retaining devices and protective plastic covers for run sheets, rack elevation and single line drawings. 4. Install matching blank panels in all spare rack spaces, and matching ventilation type panels between all power amplifiers. 5. Install access covers, hinged panels, or pull out drawers to insure complete access to terminals and interior components. Access shall not require removing or de -energizing the equipment. 6. Fasten removable covers containing any wired component with a continuous hinge along one side, with associated wiring secured and dressed to provide an adequate service loop. Provide an appropriate stop lock to hold all hinged panels and drawers in a serviceable position. 7. Key each grouping of equipment racks identically, with the appropriate designation stamped into each associated key, as indicated on the shop drawings. v. II 1 %J lde a per �111a1 Ilei It label bei of lI the ie front /t of each e^yuipl i I^ci It r Qik Ii Iiiildii Ig the I rack designation, and the circuit breaker number and associated electrical distribution panel designation servicing same. 9.. Provide permanent labels on all equipment and devices. 10. Group all microphone level, line level and loudspeaker level circuit patching not associated with adjacent equipment, respective of the associated signal circuit classifications. The latter patching facilities shall be positioned as shown on the drawings. 11. Unassigned devices and equipment as herein scheduled shall be located in equipment rack positions as shown -on the drawings. F. Speaker Installation Spectator's speaker element has been selected to provide good speech intelligibility and shall, be adjustable to provide the necessary directivity for smooth coverage of Ll le seating areas. A minimum of i 10° horizontal by i G°- i 5° vertical audio coverage can be expected from each speaker element. A speaker element shall be installed at each location per plans and specifications. A speaker mounting frame, constructed of P-1000 Uni-Strut or custom steel work shall be provided by the audiovisual 20