ARCHITECTURAL BUILDING UTILITIES

Teflon, a white soft, waxy and non adhesive polymer is used as a leak prevention material for threaded pipes.

What is the chemical name of teflon?

• Triflouroethane

• Polyethylene

• Tetrafluoroethylene

• Pentafluoroethylene

An engineered material created through a patented procedure that bonds glossy porcelain-enameled metal to a structural composite through an injection moulding process, used in manufacturing bathtubs. What is the designated name of this patented material used in market today?

• Xpelor

• Dacron

• Lucite

• Americast

Which type of pump is commonly used to convey or remove storm or underground water from a pit?

The unit is submerged under water with the discharged connected above it and into the drain located at the street level.

• Ejector pump

• Turbine pump

• Submersible pump

• Jet pump

What kind of plastic fitting can be used to connect galvanized iron pipe to a plastic pipe directly without the use of coupling?

• Union

• Female adaptor

• Male adaptor

• Bushing

When designing a septic tank, which of the following practices is NOT acceptable in so far as standard trade practice and code requirement is concerned?

• Vents not necessary

• Inlet pipe connected at the leaching chamber

• No airspace between underside of slab and scum line

• All of these

In waste disposal system, one of the concerns of sanitary engineers and public health officials is the spread of disease caused by bacteria found in sewage. What type of bacteria are present in feces excreted by man and animals?

• E.coli

• Salmonella

• Entamoeba histolytica

• Necator americanus

What material has that property that allows the smooth flow of wastewater due to its low flow resistance?

• Plastic pipe

• Galvanized steel pipe

• Concrete pipe

• Cast iron pipe

What kind of joint which utilizes heat as a means of bonding monolithically plastic pipes and fittings of homogenous composition?

• Heat bonding joint

• Heat fusion joint

• Fusion welding joint

• Plastic welding joint

The following are examples of drainage fittings EXCEPT ______

• Street tee

• 90° degree bend

• Sanitary tee

• Crawfoot

Which among the following classes of galvanized steel pipes has the thickest wall section?

• Schedule 80

• Schedule 60

• Schedule 40

• Schedile 10