fire department siamese intake (fire dept. network) //water mains (public works water network)
Al principio, al leer rápido, pensé que se trataba de los tipos de extinción: por polvo o gas (FE13, Halón, etc.) o por agua/espuma.
Ahora que lo he leido bien, te cuento. Hay dos tipos de redes en lo que se refiere a la exitinción de incendios en edificios (torres):
Red húmeda: red de agua, exclusivamente para apagar incendios, con salida en todos los pisos.
Red seca: red de agua sin suministro normal, para ser alimentada y usada exclusivamente por el Cuerpo de Bomberos.
Ésta última esta muy avanzada en San Francisco:
Auxiliary Water Supply System (AWSS) for fire protection – a separate and distinct water supply system for fire protection use only – with the Fire Department solely responsible for its maintenance, operation and development.
Te doy sólo una alternativa, no sé cual es el término exacto.
Esta presentación, te resultara útil...:-))
file:///C:/WINDOWS/Archivos%20temporales%20de%20Internet/Content.IE5/N81O3UZ8/266,8,IV. WET SYSTEMS
4.4 Dual water distribution
As the name implies, dual distribution systems involve the use of water supplies from two different sources in two separate distribution networks. The two systems work independently of each other within the same service area. Dual distribution systems are usually used to supply potable water through one distribution network and non-potable water through the other. The systems would be used to augment public water supplies by providing untreated, or poorly treated, water for purposes other than drinking. Such purposes could include fire-fighting, sanitary flushing, street cleaning, or irrigation of ornamental gardens or lawns.
Water Mains - The minimum size of water distribution mains on which fire hydrants are located should be 8 inches in a system designed to permit circulating water flow.
Fire Hydrants - The size, type and location of fire hydrants should meet the approval of the responsible fire authority and of applicable state and county regulations, with a minimum size of waterway not smaller than the size of the street main, up to a nominal 8-inch size. A 6-inch lateral to the hydrant is allowed.
Dry barrel hydrants should conform to American Water Works Association (AWWA) standard C-502. Wet barrel hydrants should conform to AWWA standard C-503.
All hydrants should be designed for a working pressure of 150 psi (pounds per square inch.) A gate valve should be placed on the connection between the main and hydrants.
Hydrant spacing should not exceed 660 feet, with minimum fire flow of 750 gpm required for population densities of one or two single family residences per acre. For population densities of more than two dwellings per acre, hydrant spacing should not exceed 330 feet, with a minimum fire flow of 1,000 gpm, and more where structural conditions require. Fire flow quantities should be available at 30 psi residual pressure in extreme fire hazard areas and 20 psi residual in low, moderate or high fire hazard areas.
Water source facilities should have the capacity to support the required fire flow for a minimum duration of two hours, in addition to the maximum daily flow requirements for other consumptive uses.
Fire and Life Safety Issues
Fire suppression system design review:
Hydrant type and locations
Water flow (supply) and pressure requirements
Sprinkler and standpipe systems
Type and locations of fire extinguishers
Specialized extinguishing systems (halon, carbon dioxide, dry chemical)
Fire detection system design review:
Smoke and heat detector type and locations
Manual-pull station locations
Monitor performance tests of fire and life safety systems
Building access for fire apparatus including road layout and locations of hydrants and fire department connections to standpipe and sprinkler systems
Construction and design requirements for laboratory or hazardous materials storage and handling areas including flammable liquid storage cabinets and compressed gas cylinder storage areas
Review of construction plans for general safety requirements including access, handrails, trench shoring, parapets (building roofs), stairs, lighting, and other items unique to the proposed project
Review of ventilation systems for smoke control systems, ducting, and dampers
Exits and egress, corridor, and stairway requirements
Emergency lighting requirements
Compliance with fire and building codes for specific building type and construction including review for required setbacks from other buildings, etc.
Compliance with fire and building codes and standards for interior finish materials and coverings for walls and ceilings
Consultation on seismic safety requirements
Compliance with emergency planning, evacuation, and public safety requirements in buildings (signage design and location)
Compliance with various fire codes, Cal-OSHA, OSHPD (health care facilities only), and Facility fire safety standards for new furnishings, fabric, and carpet purchases
Note added at 2002-03-30 19:20:21 (GMT)
Cuando se habla de \'wet and dry hydrants\' se refieren a las que tiene las tomas arriba o abajo. Unas resisten temperaturas extremas bajo cero y otras no. En climas donde el hielo es comun, se hace necesario su uso. Es como los reguladores de buceo, los hay para aguas frías y \'normales\' :-))