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BPI MFBA (Fall ) Graded A+
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BPI MFBA (Fall ) Graded A+
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BPI MFBA (Fall 2023-2025) Graded A+1.- A service call should be recommended when CO reaches 26 ppm inside the exhaust
vent of an oven: - ANSWER-False
(Service Call)
10.- Effervescence and brick work on the front of a building can come from any of these
causes except: - ANSWER-Condensation from a bathroom collecting on the vapor
diffusion retarder
10j.- You receive a complain that the exterior wall inside of a bathroom is always wet
after the tenant takes a shower. What is the cause? - ANSWER-The cold air from
outside is making the warm air from inside condensate on the wall.
11.- Which offers the highest thermal transmittance - ANSWER-High U - value
11k.- Which has the greater heat content: 5 gallons of #6 oil or 4 therms of natural gas?
- ANSWER-#6 oil
12.- Which has the greater potential heat - 3 gallons of #6 oil or 4 therm of natural gas?
(assume #6 oil is 150,000 BTUs per gallon) - ANSWER-#6 oil: 3 gallons x 150,000 =
450,000
Natural gas: 4 therms x 100,000 =400,000
#6 oil greater potential heat
12l.- Which offers the best THERMAL RESISTANCE? - ANSWER-High R-value
13.- Energy loss can be reduce on a line of exhaust vents by using: - ANSWER-
Constant Air Regulators (CARs)
13m.- The purpose of a CAR is to: - ANSWER-- Maintain constant airflow across
variations in pressure
- Maintain flows in the exhaust system that can vary with temperatures
- Mitigate Stack Effect
14.- Stack effect is common in high rise building. It can compromise Fire Safety and
IAQ. Which of these strategies is NOT a good way to address stack effect: - ANSWER-
Sealing Vents
14n.- Stack effect is common in high rise buildings. It can compromise fire safety and
IAQ.
Which of these strategies is not a good way to address Stack Effect? - ANSWER-
Sealing vents.
,15.- An HRV is more efficient than an ERV: - ANSWER-False
15o.- Sealing it tight and ventilating right means mechanical ventilation and pollution
source control are important to maintain AIQ. An ERV can help achieve these objectives
but not by: - ANSWER-Recovering air pressure
16.- Ice dams on a roof can create the following problems for a building. EXCEPT for: -
ANSWER-Poor Ventilation
16p.- An HRV or an ERV can be used in central ventilation systems but not in individual
apartments. - ANSWER-True
17.- Ice Dams form in the winter when temperatures go below freezing. Which of the
following is NOT GOOD strategy to prevent ice damming: - ANSWER-Sealing the roof
below the shingles
17q.- Ice Dams on a roof can create the following problems for a building, except for: -
ANSWER-Roof expansion
18.- In multifamily buildings, a cause of poor efficiency and IEQ in the central ventilation
system does NOT include: - ANSWER-Stack Effect
18r.- Ice Dams form in the winter when temperatures go below freezing. Which of the
following is no a good strategy to prevent ice damming? - ANSWER-Heating the roof
19.- An ERV in a Multifamily building saves energy by: - ANSWER-- Recovering
Sensible Heat
- Recovering Latent Heat
- Recovering Moisture
19s.- In multifamily buildings, when a central ventilation system is performing poorly it
can result in these problems, except: - ANSWER-Stack Effect
1a.- A vapor diffusion retarder protects insulation by: - ANSWER-Keeping away bulk
moisture from outside the building
2.- If a building requires 180,000 BTUs, how many therms are required if a boiler is 80%
efficient gas boiler when the temperature outside is 32F? - ANSWER-Units of fuel =
180,,000 x 80%
= 180,,000
= 2.25 therms
20.- MERV stands for Multiple Energy Recovery Ventilation: - ANSWER-False
20t.- The most efficient ventilation system has a MERV of 15 - ANSWER-True
, 21.- Moisture in a wall can lead to mold and deterioration. Strategies to prevent
moisture includes these steps except: - ANSWER-Installing a vapor diffusion barrier
behind the exterior cladding
21u.- Moisture in a building could increase relative humidity, pollen and bacteria. Critical
strategies to preventing moisture include these steps except: - ANSWER-Keeping bulk
moisture off the exterior cladding.
22.- When air pressures varies greatly in apartments, hallways, stairwells it can cause
which of these problems in a building: - ANSWER-- Odor migration
- Increase contaminants moving throughout a building.
- Health & safety issues
22v.- When air pressure varies greatly in apartments, hallways, stairways it can lead to?
- ANSWER-- Increase heat loads
- Increase contaminants moving into the building
- Increase energy use
23.- Ventilation airflow systems can be set at minimum rates as an energy efficiency
strategy. However, the airflow must meet which of the following standards: - ANSWER-
Design flow and applicable codes
BPI Standard 3.10
23w.- Ventilation air flow systems must meet the following standards: - ANSWER--
Local codes
- Design codes
BPI STANDARD 3.11
24.- When completing Utility Usage Analysis, it is important to collect data for all energy
and water use in the building for a least 10 months - ANSWER-False
BPI Standards 2.3 & 2.8
24x.-When evaluating utility usage analysis, consumption that is lower than predicted
should be evaluated due to equipment downtime, vacancy and other factors. If the utility
rate structure seems incorrect, what should the analyst recommend? - ANSWER-
Recommend an utility rate analysis by a qualify contractor.
25.- T12 light fixtures are being phased out by federal law. A building has 20 T12
fixtures in the basement area. Each fixture has 2 bulbs that are labeled D96T12 and a
ballast that uses 8 watts the auditor proposes replacing them with led light fixtures that
use 18 watts per bulb, what would be the annual energy cost saving (assume 24 hr/day
and $0.20 / kwh)? - ANSWER-T12: 40Bulb x 96w + 20bal x 8w / 1000
3840 + 160/1000 = 4kw
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