BU 1 FINALS
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| RAINWATER PIPES | downspouts or conductor pipes, gutter, roof drains
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| rainwater piping shall not be used as... | soil, waste and vent pipes
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| downspout and gutter sizes are based upon the... | maximum depth of rainfall per hour falling upon a given roof area in square meters
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| average of rainfall intensity used around metro manila | 102mm/hr
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| shapes of rainwater pipes may be used for downspouts | round, square, rectangular
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| Downspouts for high-rise buildings shall be of stronger pipe materials to resist the... | high hydrostatic pressure
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| downspouts for high-rise buildings shall be installed within a... | a pipe chase, and have no intermediate branch from the roof to the ground level.
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| roof drains shall be equipped with (blank) strainers extending 102mm above the surface of the roof surface | dome type
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| roof drains has a minimum total net inlet area of (blank) times the area of the outlet pipe to which it is connected | 1 to 1/2
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| roof drains passing through building interiors shall be made watertight by the use of... | c.i. drain
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| 3 major systems of collecting storm water | independent system, combined system, natural system
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| also known as the separate system | independent system
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| brings collected water directly to the water reservoirs | independent sytem
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| combines storm water with sanitary waste | combined syst em
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| without using any roof gutters or downspouts | natural system
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| when rainwater is collected in cisterns | natural system
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| roofing elements to collect rainwater | gutter, downspout, strianer or roof drain, the shoe, the catch basin, the storm line
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| usually located along the entire perimeter of the roof | gutter
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| located every 8 to 10 meters and at every corner of the roof | downspout
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| it is also best to locate them evvery 4 to 6 meters to avoid clogging of pipes | downspout
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| it is designed to receive water collecting on the surface of a roof and to discharge it into a downspout | strainer or roof drain
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| designed to prevent clogging | strainer or roof drain
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| at the bottom of the roof leader to direct rain water towards the nearest catch basin | the shoe
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| downspouts should terminate in it | catch basin
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| it delivers water to the sewers in the street via gravity | catch basin
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| it also collects surface water | area drain catch basin
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| connects to each catch basin | storm line
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| carries only rainwater collected from the storm drain or from the streets | storm water
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| terminates at natural drainage areas | storm water
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| natural drainage areas | lakes, rivers, and water reservoirs
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| storm sewer require manholes to serve as... | clean outs and to make sewers accessible for inspection and repair
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| storm sewer is built at depths of about (blank); diameter randing from (blank) | depths 2 to 3 meters; diameter ranging from 0.6 to 1.2 meters
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| review the commercial/industrial special liquid waste disposal system requirements | page 221
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| review the location of sewage disposal system | page 221
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| features of sewage treatment plan | An aeration system within the tank, A submersible mixer to mix the waste, A sludge waste pump that aids in clarifying, A decanter, Blowers, A fully electronic control system.
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| 2 most common types of municipal sewage treatment | the activated sludge process, the trickling process
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| Involves a series of stations where the raw sewage must pass through | the activated sludge process
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| the activated sludge process phases | first phase, second phase, third phase
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| the activated sludge process phases wherein it gets rid of heavy materials with the use of three different filter houses | first phase
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| the activated sludge process phases wherein it clarifies the effluent | second phase
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| the activated sludge process phases wherein it hardens the sludge and converts it to fertilizers | third phase
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| Produces water with 99 | 99.5% purit
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| a.k.a 'Percolating or Sprinkling Filter System' | THE TRICKLING PROCESS
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| Requires less mechanical elements and less stages | THE TRICKLING PROCESS
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| Produces water with 95% purity | THE TRICKLING PROCESS
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| Requires a large ground area for its building | THE TRICKLING PROCESS
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| components of fire protection system | standpipes, outlets, pump, fire hose cabinet, elevated water tank, underground water reservoir
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| Water is pumped up to it and preserved for emergency uses | elevated water tank
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| It should not be connected to the water distribution line of the building | elevated water tank
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| A cistern | underground water reservoir
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| Water is usually provided from the main water line, But sometimes collected rain | underground water reservoir
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| TYPES OF STANDPIPES FOR FIRE PROTECTION SYSTEM | dry standpipes, wet standpipes, wet standpipes with siamese connection, combination
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| No longer being utilized in new buildings, provided other systems are employed (otherwise must be installed in buildings 4 levels or more) | dry standpipes
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| a pipe installed in buildings not as part of the water supply or waste disposal system but primarily for use as water conveyor in case of fire | standpipe
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| A standpipe is connected to the exterior of the building via fire department connections. (max height= 1220mm) | working principle of dry standpipes
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| types of dry standpipes | DRY STANDPIPE WITH AUTOMATIC DRY PIPE VALVE, DRY STANDPIPE WITH MANUAL CONTROL VALVE, DRY STANDPIPE WITH NO PERMANENT WATER SUPPLY
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| No water under normal conditions, With pressurized air, Water comes in via public utility connection | DRY STANDPIPE WITH AUTOMATIC DRY PIPE VALVE
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| Dry pipe valve is designed to open when there is air pressure drop in the system | DRY STANDPIPE WITH AUTOMATIC DRY PIPE VALVE
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| No water under normal conditions, Water enters after opening of manual valve, Water comes in via public utility | DRY STANDPIPE WITH MANUAL CONTROL VALVE
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| Water is pumped into the system by the fire department | DRY STANDPIPE WITH NO PERMANENT WATER SUPPLY
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| Most common dry standpipe | DRY STANDPIPE WITH NO PERMANENT WATER SUPPLY
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| A piping network (line is directly connected to the main water line) connects to all levels of a building (at least 1 standpipe outlet on each level) | working principle of wet standpipes
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| The number of wet standpipes shall be determined so that all portions of the building are within... | 6 meter of a nozzle attached to a hose 23 meters long
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| Wet standpipes shall be constructed of... | wrought iron or galvanized steel
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| it is located outside the building for additional water supply (connects to fire truck hose) | Siamese Connection
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| The minimum diameter for a wet standpipe is (blank) for those less than 15 meters from the fire service connection | 51mm (For those more than 15 meters from the fire service connection, the minimum diameter is 64mm)
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| TWO TYPES OF SPRINKLERS SYSTEMS | AUTOMATIC WET, AUTOMATIC DRY
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| Lines are constantly filled with water | AUTOMATIC WET
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| Valves and censors trigger the water to fill up the lines at the slightest hint of fire 25 gals. Per minute/ 1 sprinkler head | AUTOMATIC DRY
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| TYPES OF SPRINKLER HEADS | UPRIGHT, PENDENT, SIDE THROW/ SIDE WALL
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| use above piping when piping is exposed; this type is safer against damage | UPRIGHT
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| projects through a finished ceiling when piping is concealed | PENDENT
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| SPACING OF SPRINKLER HEADS (Branch) | 15 feet
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| SPACING OF SPRINKLER HEADS (Heads) | 4 to 10 feet
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| SPACING OF SPRINKLER HEADS (From wall) | 4 inches
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| LIGHT HAZARD OCCUPANCY (Coverage of one sprinkler head) | 20sqm
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| EXTRA HAZARD OCCUPANCY (Coverage of one sprinkler head) | 10sqm
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| ALTERNATIVE FIRE SUPPRESSION SYSTEM | CLEAN AGENT GAS FSS, CARBON DIOXIDE FFS, FOAM FFS, KITCHEN FFS
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| discharges inert gas (halon) on the surface of combusting materials | CLEAN AGENT GAS FSS
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| consists of cylinders of agents, heat/smoke detectors, piping and discharge nozzles | CLEAN AGENT GAS FSS
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| doesn't leave any residue but do little harm to firefighters, occupants and equipment | CLEAN AGENT GAS FSS
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| alternative to Halon: FM200 (heptaflouropropane), FE | 13 (Triflouromethane), NERGEN (mixture of nitrogen, argon and carbon)
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| discharge carbon dioxide gas that extinguishes fire by displacing oxygen or taking oxygen away from the fire | CARBON DIOXIDE FFS
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| consists of cylinders of agents, heat/smoke detectors, piping and discharge nozzles | CARBON DIOXIDE FFS
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| can't be used with occupants being present | CARBON DIOXIDE FFS
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| discharge a high volume of gas filled bubbles that rapidly fills the space; bubbles float on the surface | FOAM FFS
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| consists of foam generators, heat/smoke detectors and a blower system that distributes the foam | FOAM FFS
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| When liquid wastes containing excessive amounts of grease, garbage, flammable wastes, sand, or other ingredients which may affect the operation of a private sewage disposal system, an interceptor for such waste shall be installed. | COMMERCIAL/INDUSTRIAL SPECIAL LIQUID WASTE DISPOSAL SYSTEM REQUIREMENTS
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| Waste from interceptors may be discharged to a septic tank or other primary system or into a separate disposal system | DISPOSAL
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