What standard should an engineer use when establishing minimum ventilation rates for a new mechanically ventilated space to earn Indoor Environmental Quality, Minimum Indoor Air Quality Performance?
Correct Answer: B
ASHRAE 62.1-2010 is the standard that an engineer should use when establishing minimum ventilation rates for a new mechanically ventilated space to earn Indoor Environmental Quality, Minimum Indoor Air Quality Performance. This is the standard referenced by theLEED V5BD+C Reference Guide for this prerequisite. Local building code, International Mechanical Code 2012, and the ventilation code requiring the greatest volume of outside air are not acceptable alternatives for this prerequisite. :LEED V5BD+C Reference Guide, Indoor Environmental Quality Category, EQp Minimum Indoor Air Quality Performance, page 674.
Question 227
An urban office building project is installing a cooling tower. To save on potable water, the project would like to usea nonpotable water source to provide 20% of the cooling tower makeup water to achieve the maximum number ofpoints under Water Efficiency Credit, Cooling Tower Water Use. Which nonpotable water source would be the mostappropriate for use?
Correct Answer: C
Explanation Rainwater collected from the building roof would be the most appropriate nonpotable water source for use in a cooling tower. This is because rainwater is generally cleaner than other nonpotable sources and does not require extensive treatment before use.Additionally, using rainwater can help to reduce stormwater runoff, providing an additional environmental benefit.References: LEED AP Building Design + Construction (LEED AP BD+C) V4 resources1
Question 228
A school project is located in a basin. Snow melts in the spring on the nearby mountains which replenishes the local water supply. The nearby highways are sometimes closed during the winter due to the winter storm. What is the top priority the project team should focus on?
Correct Answer: B
This option requires the project team to focus on reducing the water consumption of the school project, because it is located in a basin that depends on the seasonal snowmelt for its water supply1. Installing efficient plumbing fixtures, such as low-flow faucets, toilets, and showerheads, can help save water and reduce the demand on the local water resources2. This option can also help the project achieve the LEED credits for outdoor and indoor water use reduction3. : = LEED V5: Building Design + Construction Guide, Water-Efficient Plumbing Fixtures, Water Efficiency | U.S. Green Building Council.
Question 229
Which strategy should be employed to improve daylighting when designing a new building?
Correct Answer: B
Explanation Increase the number of skylights Skylights are openings in the roof or ceiling that allow natural light to enter the building. They can improve daylighting by providing more uniform and diffuse illumination, reducing the need for artificial lighting, and enhancing the visual comfort and well-being of occupants. Skylights can also reduce cooling loads by minimizing solar heat gain through the roof. However, skylights must be designed carefully to avoid glare, overheating, and heat loss issues. References: Reference Guide for Building Design and Construction v4 - Pages 279-2801 Daylighting | WBDG - Whole Building Design Guide1
Question 230
Which of the following should be analyzed when pursuing an Integrative Design Process focusing on Energy- Related Systems?
Correct Answer: A
The correct answer is A, site conditions. According to the LEED v4: Building Design + Construction Guide, the Integrative Process Prerequisite, Integrative Project Planning and Design, requires the project team to perform a preliminary "simple box" energy modeling and analysis before the completion of schematic design. The purpose of this analysis is to evaluate the energy performance goals of the project and to identify and compare the energy-related design strategies. The analysis should include the following aspects1: * Site conditions, such as climate, solar orientation, shading, and natural ventilation potential * Massing and orientation, such as building shape, size, and orientation, and how they affect the heating and cooling loads, daylight availability, and passive design strategies * Basic envelope attributes, such as insulation levels, window-to-wall ratio, glazing properties, infiltration rates, and thermal bridging * Lighting levels, such as the target illumination levels, daylighting potential, and lighting power density * Plug and process loads, such as the equipment and appliances that consume electricity, and their schedules and controls * Programmatic and operational parameters, such as the occupancy, operating hours, and zoning of the building * Thermal comfort ranges, such as the acceptable temperature and humidity levels for the occupants * HVAC system selection, such as the type, efficiency, and control of the heating, ventilation, and air conditioning system The other choices are not aspects that should be analyzed when pursuing an integrative design process focusing on energy-related systems, because: * Potable water availability is related to the water efficiency and water quality goals of the project, not the energy performance goals2. * Acoustic performance of the project is related to the indoor environmental quality and occupant comfort goals of the project, not the energy performance goals3. * Applicability of green vehicles to the project is related to the location and transportation and greenhouse gas emissions goals of the project, not the energy performance goals4. References: LEED v4: Building Design + Construction Guide, Integrative Process Prerequisite, Integrative Project Planning and Design, Option 1. Energy-Related Systems1; LEED v4: Building Design + Construction Guide, Water Efficiency Prerequisite, Indoor Water Use Reduction, Requirements2; LEED v4: Building Design + Construction Guide, Indoor Environmental Quality Prerequisite, Minimum Indoor Air Quality Performance, Requirements3; LEED v4: Building Design + Construction Guide, Location and Transportation Credit, Green Vehicles, Requirements4
