Questions and Answers of Mechanical And Electrical Systems In Architecture Engineering And Construction

The following number and type of plumbing fixtures serve an apartment: one bathtub, one water closet, one lavatory, one kitchen sink, and one dishwasher. Assume the horizontal fixture branch serving
The following number and type of plumbing fixtures serve a condominium: two bathtubs, two water closets, two lavatories, one kitchen sink, and one dishwasher.Assume the horizontal fixture branch
The following number and type of plumbing fixtures serve a residence: two bathtubs, three water closets, three lavatories, one kitchen sink, and one dishwasher.The bathroom fixtures are served by one
A high-rise condominium building has condominium units stacked symmetrically from floor to floor. The following number and type of plumbing fixtures serve each condominium: one bathtub, two water
Design the plumbing drainage for the apartment building in Appendix B. Use acrylonitrile-butadiene-styrene copolymer (ABS) pipe and tubing for this design problem.Appendix B
A high-rise condominium building has condominium units stacked symmetrically from floor to floor. The following number and type of plumbing fixtures serve each condominium: one bathtub, two water
Describe gray water and black water.
Describe the constituents of wastewater.
Describe preliminary, primary, secondary, or tertiary wastewater treatment processes.
Describe where OSST systems are used.
Describe the components of a septic tank.
Describe the differences between a septic tank and aerobic tank.
Why do most codes set minimum distances between the parts of the sewage system and wells and streams?
How is the ability of the soil to absorb wastewater determined?
Design a private sewage system (septic tank and disposal field) for the building in Appendix C. In this design, use a percolation rate of 22 min.Appendix C 5 BRICKS ASPHALT SHINGLES
Why should the designer consider not connecting pipes carrying certain wastewater (such as water from dishwashing machines) to the private OSST system?
Design a private sewage system (septic tank and disposal field) for the apartment building in Appendix B. In this design, use a percolation rate of 16 min.Appendix B
Draw a sketch of the major parts of an individual OSST system (septic tank and absorption field) in relation to a residence. Show clearance and setback requirements.
Design a private sewage system (septic tank and disposal field) for the building in Appendix D. In this design, use a percolation rate of 32 min.Appendix D FRONT ELEVATION
Design a private sewage system for the apartment building in Appendix B. In this design, use a percolation rate of 16 min. Assume the maximum water table elevation is 2 ft (0.6 m) below
What methods may be used to dispose of the water from roofs, courtyards, and parking lots?
What is a combined sewer, and under what conditions should this system of storm drainage be used?
What methods are commonly used for roof drainage?
When the roof drainage water is run into roof drains or gutters, what solutions may be used to disperse the water at the end of the downspout?
What methods are commonly used for subsurface drainage?
Design the storm drainage system serving a 16 ft by 32 ft roof area with two downspouts. Assume a sloped roof with gutters (1⁄8 in per foot slope) and downspouts to the ground and a 4 in per hr
What is a semiconductor?
Why is overcurrent protection used on an electrical circuit?
Why is a control device used on an electrical circuit?
What are the differences between series and parallel circuits?
How do magnetism and electricity relate to each other?
How do DC and AC differ?
A 25 kVA closet transformer located inside a building is used to step down the voltage for the building. It is connected to a primary 7200 V AC power source. The ratio of the number of primary
A 20 kVA closet transformer located inside a building is used to step down the voltage for the building. It is connected to a primary 4800 V AC power source. The ratio of the number of primary
What types of fuses are used in building electrical systems?
Determine the volume of water contained in a 1⁄2 in diameter (nominal) cross-linked polyethylene (PEX) tube per foot of length. Use actual pipe dimensions.
Determine the volume of water contained in a 1 in diameter (nominal) chlorinated polyvinyl chloride (CPVC) pipe with a standard dimension ratio (SDR) of 13.5 per foot of length. Use actual pipe
Using a container with a known volume (e.g., 1 gal, 5 gal, and so on) and a watch with a second hand, determine the flow rate of the plumbing fixtures in your home or apartment (urinals, water
Using a container with a known volume (e.g., 1 L, 2 L, and so forth) and a watch with a second hand, determine the flow rate of the plumbing fixtures in your home or apartment (urinals, water closet,
Using a copy of the local plumbing code, determine the minimum number of plumbing fixtures required for an auditorium planned for a total of 5500 people (assume 50% of each gender).
Using a copy of the local plumbing code, determine the minimum number of plumbing fixtures required for a restaurant planned for 250 seats (50% of each gender).
Using a copy of the local plumbing code, determine the minimum number of plumbing fixtures required for a higher education school building planned to accommodate 750 people (50% of each gender).
Identify and describe the six main parts of a building water supply system.
What is residual water pressure?
Identify and describe the two basic types of water supply distribution systems used in buildings, and where each will be used.
What are the factors that dictate the minimum and maximum water velocity in a plumbing system?
What is cavitation and where might it occur?
What is a cross-connection and where might it occur?
What is water hammer, and how can it be reduced in the system?
How can thermal expansion damage a pipe?
What types of pipe materials expand the most with temperature increase?
A pump with an 8-in diameter impeller is operating at 1750 rpm and delivering 40 gpm with a total dynamic head of 55 ft. The pump's brake horsepower (BHP) is 1.2 hp under these conditions. Assume
What is the difference between a receptacle and plug-in building electrical systems?
What is an inrush current limiter, and where is it used?
In a single panelboard, what is the maximum number of overcurrent protection devices that may be used for protecting lighting/appliance branch circuits?
It is referred to in the trade by several names: power panel, load center, distribution center, or main power panel. Code refers to it by a single name. Identify this name.
With respect to conductor insulation, interpret the following insulation designations:a. Tb. Nc. Hd. HHe. W
With respect to conductors, interpret the following designations:a. THHNb. THWNc. XHHWd. ALe. CU
With respect to cable, interpret the following designations:a. NMb. ACTHc. UFd. USE
With respect to conductor insulation, describe the following location ratings:a. Dryb. Dampc. Wet
Armored cable (AC) is commonly used in commercial, industrial, institutional, and multi residential installations. From tables provided in this chapter, identify the ampacity of the following
A 30 ft by 40 ft classroom with 8 ft high ceilings will have an ambient lighting target illuminance of 70 fc at a work plane that is 28 inches above the floor. It is anticipated that the ceiling
How can building orientation affect the sound level inside the building?
Illumination of a 100 ft by 140 ft gymnasium requires 45-400 W metal halide luminaires. Assume each luminaire consumes 435 W, including the ballast. Determine the power density of this lighting
What is a flanking sound path, and how may this problem be avoided?
A plumbing branch is composed of 68 ft of 1-in diameter Type L copper pipe, three 90° elbows, and a gate valve. The elevation increase is 12 ft. Determine the total pressure drop across the plumbing
Determine the pressure drop across a 3-in diameter Type L copper pipe that is 80 ft long and is carrying water at 120 gpm.
What is the difference between hard and soft water?
What are the two types of water softening methods and how do they function?
What are the two basic types of water supply systems used?
How can freezing water damage a pipe and how does damage occur?
How can heated water damage a pipe and how does damage occur?
What effect does aging have on different types of pipe?
Why is pipe insulation necessary and where is it used?
During what hours does water usage peak in a home?
What is a fixture unit and where is it used?
What is meant, in water supply systems, by static head and friction head?
Describe the terms cold water, chilled water, heated water, and tempered water.
What is the difference between a storage tank water heater and an instantaneous water heater?
Why is more than one storage tank water heater sometimes used in larger residences?
What is the difference between recirculating and noncirculating hot water systems, and where would the circulating system most likely be used?
Describe the operation of the two types of pumps commonly used in buildings. Which type of pump is most common?
With respect to a pump, what is pump capacity?
With respect to a pump, what is total dynamic head?
With respect to a pump, what is brake horsepower?
With respect to a pump, what is net positive suction head?
With respect to a pump, what is a pump performance curve?
What are parallel and series pumping?
What are the two main problems with hard water in plumbing systems?
Using the velocity design method, determine the minimum required size of hot and cold water supply pipes serving an apartment containing a kitchen sink, dishwasher, lavatory, bathtub, and tank-type
Using the velocity design method, determine the minimum required size of hot and cold water supply pipes serving 8 apartments, each containing a kitchen sink, dishwasher, lavatory, bathtub, and
A plumbing fixture outlet is 18 ft above the water service line. Pressure available at the water service is 80 psi. Determine the change in pressure from elevation.
A plumbing fixture outlet is 120 ft above the water service line. Pressure available at the water service is 80 psi. Determine the change in pressure from elevation.
Determine the pressure drop across a 3⁄4-in diameter Type L copper pipe that is 60 ft long and is carrying water at 12 gpm.
Determine the demand load of water required for the apartment building in Appendix B.Appendix B
Estimate the peak hot water demand of a household that has a morning routine of three showers, two hands/face washings, five teeth brushings, food preparation, and automatic dishwashing.
Size an instantaneous water heater to meet the following conditions:• Two hot water faucets open with a flow rate of 0.75 gpm• Two persons showering using showerheads with a flow rate of 2.0 and
Design an upfeed water supply system for the apartment building in Appendix B. Use Type L copper pipe for this design problem. Assume each apartment has its own storage tank water heater.Appendix B
Determine the hot water consumption and the equipment sizes required for the building in Appendix B.Appendix B
Estimate the peak hot water demand of an 18-unit condominium having a single water heating system. Each unit has two full bathrooms and a clothes washing machine. Calculate the minimum storage tank

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