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Programming Documents for Pre-K for SA - The City of San Antonio

Programming Documents for Pre-K for SA - The City of San Antonio

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finished floor level. Fire rated Plywood backboard should never be painted and the fire rated<br />

stamps shall be visible after installation. In the event that non fire-rated backboard is used, two<br />

coats <strong>of</strong> flame-retardant paint shall be used to paint the plywood.<br />

Plywood backboards shall be used <strong>for</strong> installing AT&T, Time Warner, Grande and other<br />

service providers and other equipment requiring wall mounting. Any riser/backbone cable that<br />

may require lightning protection/bonding and should also be mounted on the wall<br />

5.2.2 Cable Entry<br />

Backbone and Riser Cable entry – floor/ceiling – should be located on the plywood covered<br />

wall starting on the left side <strong>of</strong> the wall. Protectors shall be terminated on this wall converting<br />

from underground cable to inside cable and extended into the data cabinet. This installation is<br />

pre-engineered and the work done by contractors.<br />

Conduit or sleeve should penetrate the walls 6”, with ends protected by plastic, or other<br />

appropriate bushings, to prevent cable abrasion during installation.<br />

5.2.3 Fire Stopping<br />

Fire stopping material shall be in place after all cable and wire construction involving<br />

penetration through fire barriers.<br />

5.2.4 Grounding<br />

Grounding is the electrical connection to earth, normally through the earth electrode system and<br />

must comply with local fire code.<br />

Aluminum cable sheath as well as protectors shall be grounded using #6 copper running to the<br />

building ground (Electrical ground, or a ground rod, specified on the original engineering<br />

drawings).<br />

Additionally, all racks, cable trays, and shelving shall be grounded using #6 copper running to<br />

building ground when compatible with required electrical codes, the grounding instructions and<br />

requirements <strong>of</strong> the equipment manufacturer should also be followed. Cable tray that is bolted<br />

together (metal-to-metal connection) needs to be grounded with grounds straps after bonding<br />

has occurred.<br />

5.2.5 Bonding<br />

Bonding is the electrical connection between two metallic surfaces to provide a low resistance<br />

path between them.<br />

Bonding shall be by #6 copper, cabinet to cabinet or cable tray to cable tray. Paint will have to<br />

be removed on painted surfaces to ensure a good connection.<br />

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