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

Identify and describe the components of an advanced home wiring system.
Make a visit to a residence with an advanced home wiring system. Make a sketch of the system and identify chief components of and their locations in the system.
Make a visit to a commercial building with a telecommunications network. Make a sketch of the telecommunications network and identify chief components and their locations in the system. Describe the
What is sound?
What units are used to identify the intensity of sound?
What is the difference between sound and noise?
What is sound transmission?
What is the difference between airborne sound and structure-borne sound?
If the sound level changes from 42 to 45 dBA, how noticeable would it be to a person in the same room? What if the sound level changes from 42 to 62 dBA?
What is the STC?
What is the IIC?
What is the NRC?
How can the surrounding environment affect sound control?
What methods might be used to control and isolate vibration noises in buildings?
For the apartment building in Appendix B, identify U.S. Department of Housing (HUD) requirements for sound transmission class (STC). Use Table 23.9. Identify construction assemblies that meet these
A wall separates a space with noise levels of about 85 dBA and another room with sound levels of about 45 dBA. Recommend an STC for the wall.
Make a visit to a commercial building. Identify chief components, systems, and strategies used for acoustical control.
Make a visit to a theatre. Identify chief components, systems, and strategies used for acoustical control.
Describe the hydraulic elevator.
Describe the traction elevator.
Explain the differences between the conventional (holed) hydraulic elevator, the telescopic hydraulic elevator, and the holeless hydraulic elevator.
Describe and distinguish between the following components of an elevator system:a. Carb. Platformc. Cab
Describe the following components of an elevator system:a. Pitb. Penthousec. Landing
Describe the following components of an elevator system:a. Hoistwayb. Blind hoistwayc. Hoistway doors
Describe the following components of an elevator system:a. Elevator controllerb. Car operating stationc. Hall stationd. Traveling cable
Describe the following components of an elevator system:a. Brakeb. Governorc. Drive unitd. Buffer
Describe the classifications of elevators based on use.
Describe an escalator.
Describe the following components of an escalator system:a. Drive unitb. Sprocket drivec. Stepsd. Balustradee. Moving handrailf. Trussg. Emergency stop button
Describe the differences between the crisscross, single continuous, continuous parallel, and noncontinuous parallel escalator systems.
What is the typical inclination angle of an escalator?
Describe a moving walkway.
What are the two types of walkway technologies?
What is a wheelchair lift?
What is the difference between a platform lift and a stair lift?
Describe a car lift.
What is a paternoster?
Using a stopwatch, time an elevator in a building. Determine the following:a. Average time required for the door to close once a car operating station button (i.e., floor button) is pushedb. Average
Using a stopwatch, time an elevator in a high-rise building (75 stories). Determine the following:a. The average time it took to go up one story, excluding wait time (start the stopwatch as soon as
Using a stopwatch, time an escalator in a building. Determine the following:a. The average time it took to go up one story (start the stopwatch as soon as you step onto the escalator, and stop it as
Explain the concept of sustainability.
Describe a sustainable building.
What is the LEED program?
What is a CHP system and why is it efficient?
Define background noise.
How is background noise used in controlling objectionable sound?
How can background noises be introduced into a space?
Why should the surrounding environment be checked before the building is designed?
How can the surrounding noise environment affect the design of a building?
Over the workday, a worker is exposed to a noise level of 90 dBA for 4 hr, 92 dBA for 2.5 hr, and 100 dBA for 1.5 hr.a. Find the daily exposure.b. Does this exposure exceed the OSHA permissible
Over the workday, a worker is exposed to a noise level of 90 dBA for 4 hr, 92 dBA for 3.5 hr, and 100 dBA for 0.5 hr.a. Find the daily exposure.b. Does this exposure exceed the OSHA permissible
A 64 ft by 220 ft church sanctuary with 22 ft high ceilings has walls with an absorption coefficient (1000 Hz) of 0.09, ceiling with an absorption coefficient of 0.24, and seating (unoccupied) with
A 32 ft by 84 ft museum hall with 20 ft high ceilings has walls with an absorption coefficient (1000 Hz) of 0.09, ceiling with an absorption coefficient of 0.20, and seating (unoccupied) with an
A 16 m by 48 m concert hall with 8 m high ceilings has walls with an absorption coefficient (1000 Hz) of 0.09, ceiling with an absorption coefficient of 0.25, and seating (unoccupied) with an
A wall separates a space with noise levels of about 70 dBA and another room with sound levels of about 30 dBA. Recommend an STC for the wall.
A wall separates a space with noise levels of about 80 dBA and another room with sound levels of about 40 dBA. Recommend an STC for the wall.
Describe photovoltaic (PV) power and where it can be used in buildings.
Explain the difference between a wind turbine and a windmill.
The heating load of a residence at winter design conditions is 88 400 Btu/hr (with pick-up allowance). From the performance specifications for high-efficiency, gas fired residential warm-air furnaces
Selecting the best-suited HVAC system depends on factors such as cost and availability of the energy source; appliance or system efficiency; cost to purchase, install, and maintain the appliance or
The heating load of a residence at winter design conditions is 88 400 Btu/hr (with pick-up allowance). From the performance specifications for high-efficiency, oil fired residential warm-air furnaces
Selecting the best-suited HVAC system depends on factors such as cost and availability of the energy source; appliance or system efficiency; cost to purchase, install, and maintain the appliance or
Selecting the best-suited HVAC system depends on factors such as cost and availability of the energy source; appliance or system efficiency; cost to purchase, install, and maintain the appliance or
Selecting the best-suited HVAC system depends on factors such as cost and availability of the energy source; appliance or system efficiency; cost to purchase, install, and maintain the appliance or
Selecting the best-suited HVAC system depends on factors such as cost and availability of the energy source; appliance or system efficiency; cost to purchase, install, and maintain the appliance or
Selecting the best-suited HVAC system depends on factors such as cost and availability of the energy source; appliance or system efficiency; cost to purchase, install, and maintain the appliance or
Selecting the best-suited HVAC system depends on factors such as cost and availability of the energy source; appliance or system efficiency; cost to purchase, install, and maintain the appliance or
Selecting the best-suited HVAC system depends on factors such as cost and availability of the energy source; appliance or system efficiency; cost to purchase, install, and maintain the appliance or
Selecting the best-suited HVAC system depends on factors such as cost and availability of the energy source; appliance or system efficiency; cost to purchase, install, and maintain the appliance or
Selecting the best-suited HVAC system depends on factors such as cost and availability of the energy source; appliance or system efficiency; cost to purchase, install, and maintain the appliance or
Selecting the best-suited HVAC system depends on factors such as cost and availability of the energy source; appliance or system efficiency; cost to purchase, install, and maintain the appliance or
Describe the function of:a. Constant volume (CV) terminal boxb. Reheat terminal boxc. Variable air volume (VAV) terminal box
Describe the following hydronic distribution components:a. Convection heatersb. Radiatorc. Fan-coil unitd. Unit ventilator
Describe the following components of hydronic systems:a. Pipeb. Fittingsc. Valvesd. Pumpe. Insulation
Describe the following components of hydronic systems:a. Convectorb. Radiatorc. Convector radiatord. Fan-coil unite. Unit ventilatorf. Induction unit
Describe the difference between a fan-coil unit and a unit ventilator.
What are the types of zones and where are they used?
Describe the types of thermostats.
Describe thermostat operation.
Describe the operation of a direct digital control (DDC) system.
Describe the types of sensors used in HVAC control applications.
Describe the functions of a building energy management system (BEMS).
Draw a simple sketch showing the process outlined in the previous example on a psychrometric chart.
Moist air at standard conditions is at a dry bulb temperature of 80°F and a relative humidity of 50%. It is cooled to 50°F. Use the psychrometric chart to determine:a. The energy removed from the
Calculate the annual heat loss (in U.S. units) through the following wall assemblies using U-factors from Table 2.9 and the annual heating degree days over a typical heating season at the
Calculate the annual heat loss [in metric (SI) units] through the following wall assemblies using U-factors from Table 2.9 and the annual heating degree-days over a typical heating season at the
Approximate the fuel cost over the heating season, based on current energy costs. (It will be necessary for you to contact local suppliers to get local costs.) A building has a heat loss of 100 MJ/hr
For the previous exercise: Approximate the fuel cost over the heating season, based on current energy costs. (It will be necessary for you to contact local suppliers to get local costs.)Data From
Describe direct use of geothermal energy.
Describe the types of heat pump loops.
Explain the characteristics of a geothermal site that require consideration.
Describe the types of biomass energy that can be used in buildings.
Describe the following PV systems and how they differ:a. Stand alone off gridb. Grid connected
Identify and describe the three types of cogeneration systems.
Explain geothermal energy.
Describe a geothermal heat pump.
Explain the direct use of geothermal energy and a geothermal heat pump.
Explain the fundamental components of a heat pump system:a. Ground loopb. Heat pumpc. Air delivery system
Describe the types of biomass technologies that can be used in buildings.
Describe the components of in a PV system.a. PV cellsb. Invertersc. Batteriesd. Charge controllers

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