Pass LEED-AP-BD+C Exam Guide

The outdoor airflow rate is the amount of outdoor air that is supplied to the building by the ventilation system to dilute indoor air pollutants and provide fresh air for the occupants. The outdoor airflow rate depends on the ventilation standard that the project follows, which can be either ASHRAE 62.1-2010 or CEN Standard EN 15251-20071. Both standards specify the minimum outdoor airflow rate per person and per unit area for different occupancy types and zones. Therefore, increasing the number of occupants will require an increase in the outdoor airflow rate to maintain the minimum ventilation level. The other variables, such as supply air velocity, system ventilation efficiency, and supply air temperature set point, do not directly affect the outdoor airflow rate, although they may influence the energy consumption and thermal comfort of the ventilation system.

References:

LEED Reference Guide for Building Design and Construction v4

Minimum Indoor Air Quality Performance

Ventilation for Acceptable Indoor Air Quality - ASHRAE

Indoor environmental input parameters for design and assessment of … - CEN

Contractor

The contractor is the project team member who should be integrated early into the design phase to assist with earning the Materials and Resources Prerequisite, Construction and Demolition Waste Management Planning. The contractor is responsible for implementing the waste management plan, which includes estimating the types and quantities of waste materials, identifying the diversion strategies, selecting the waste haulers and recyclers, tracking and documenting the waste diversion performance, and training the subcontractors and workers. The contractor can provide valuable input on how to reduce, reuse, and recycle the construction and demolition waste, as well as identify potential challenges and opportunities for achieving the prerequisite requirements.

References:

Reference Guide for Building Design and Construction v4 – Pages 263-2641

LEED Certification and Sustainable Construction Waste Management1

LEED requires that at least 50% of a building’s annual electricity consumption be offset by green power or carbon offsets to achieve the Energy and Atmosphere Credit: Green Power and Carbon Offsets. For this building with a projected annual consumption of 2,200,435 kWh, half of this amount, 1,100,218 kWh, must be purchased from green sources to meet the credit requirements. This strategy helps mitigate carbon emissions by promoting the use of renewable energy.

This option applies to projects that renovate an existing building that meets the definition of abandoned or blighted, and use new materials for at least 50% of the surface area. The project meets these criteria, as the warehouse is an existing building that is presumably abandoned or blighted, and the new construction will use new materials for 40% of the interior and some of the exterior. References: LEED v4: Building Design + Construction Guide, Materials and Resources Credit, Building Life-Cycle Impact Reduction, Option 4: Renovation of Abandoned or Blighted Building

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