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throughout the building is 150 pounds live load per square foot. <br />Floors should be leveled to close tolerance to facilitate <br />shelving interface flexibility. <br />b. Electrical requirements <br />Convenience outlets should be provided for standard <br />electrical equipments floor vacuums. scrubbers, polishers, <br />clocks, computer terminals, microform readers, and audio-visual <br />equipment. Outlets away from walls and pillars should he flush - <br />floor mounted and capped. Floor monuments are not acceptable. <br />Major equipment such as copy machines will require 220 <br />volt service. This equipment must be located during final <br />electrial drawings and the staff must be consulted for exact <br />needs. <br />Underfloor duct will be required to circulation desk, <br />information desk, children's service desk and work room. The <br />exact type of system and location must reviewed with library <br />staff. <br />C. Illumination Requirement <br />Lighting remains one of the major concerns in library <br />planning. The requirements set forth below provide reasonable <br />standards within efficient energy demands. Task lighting as a <br />light source' should be carefuly considered in view of its <br />advantages but care must be taken to also consider its <br />significant limitations in most library applications. All <br />lighting selections must be carefuly determined to avoid glare at <br />table and counter tops and to consider both day and night <br />variations. The quality of the lighting is as important as the <br />specifications for foot candles. <br />The lighting level in the building shold be as follows: <br />Reading areas-- public and staff: a minimum of 70 <br />foot candles sustained at table level. <br />Book stacksstorage and non -assigned soacest a <br />minimum of 40 foot candlesi sustained uniformly at floor level. <br />Lighting fixtures in public areas should be of .such <br />type and so arranged that light levels as requested can be <br />achieved regardless of the arrangement of shelving and/or <br />seating. <br />The number of different types of lightinq fixtures <br />must be kept to a minimum and the ease of re -tubing must be a <br />major consideration in fixture selection. <br />F1'borescent fixtures with lenses and providing_ uniform <br />overall lighting should be the primary light source. Special <br />:i <br />8 <br />