An essential goal of retro commissioning, re-commissioning, or on-going commissioning for a building's energy using systems is to
Answer(s): D
Retro-commissioning, re-commissioning, or on-going commissioning are quality assurance processes for existing buildings that aim to optimize performance and improve building operation. One of the essential goals of these processes is to identify opportunities for cost-effective reduction in energy consumption123. This involves verifying and documenting that the building and its systems and assemblies are operating efficiently and meet the current requirements of the building3.
LEED v4: Building Operations + Maintenance Guide | U.S. Green Building Council LEED v4.1 OPERATIONS AND MAINTENANCE - WAP Sustainability Consulting Building Operations & Maintenance - Canada Green Building Council (CAGBC) Guide to the LEED AP Operations and Maintenance (O+M) Exam Technical Guidelines on Retro-commissioningExisting Building Commissioning: Retro-commissioning and Re-commissioning with EAB EC Re-Commissioning | NJ Green Building Manual
Rainwater harvesting can be used for which of the following credits or prerequisites?
Answer(s): B
Rainwater harvesting is a strategy that can be used to reduce indoor water use, which is a part of the Water Efficiency Credit under the LEED AP Operations + Maintenance (LEED AP O+M) V4.1. By collecting and using rainwater for non-potable uses such as toilet flushing or irrigation, buildings can significantly reduce their demand for municipally treated water. This aligns with the goals of the Indoor Water Use Reduction credit, which encourages the reduction of potable water usage inside the building1.
LEED v4: Building Operations + Maintenance Guide
What must the project team do in order to maximize the reduction in operational costs with regard to Sustainable Sites Credit, Site Improvement Plan?
Answer(s): A
Reducing lawn areas can significantly impact operational costs related to landscaping maintenance, irrigation, and the potential need for chemical fertilizers and pesticides. By minimizing lawn areas and potentially replacing them with native or adapted vegetation, the site improvement plan can contribute to lower operational costs, water conservation, and improved site sustainability.
This strategy is supported by the Sustainable Sites category in the LEED O+M Reference Guide, which encourages practices that reduce the environmental impact of landscaping and site management.
A tenant is moving into a new space in an existing building. They will fit out this new space and are considering LEED Certification. The tenant is projecting that 80% of the space will be used as office space. They will also have 10% of the space serving as a data center supporting the office. The remaining 10% will be used as a store showcasing and selling their consumer products for direct purchase to the general public. According to the Rating System Selection Guidance, which rating system would be most applicable for this project?
The LEED Interior Design and Construction: Commercial Interiors rating system is the most appropriate for this project. This rating system is designed for tenants leasing a portion of a larger building who want to design and construct their space to high performance standards1. The tenant's project involves fitting out a new space in an existing building, with the majority (80%) of the space being used as office space. Although there are components of retail and data center use, these do not constitute the majority of the space use. Therefore, the Commercial Interiors rating system, which is intended for office spaces and other commercial spaces, would be the most applicable.
LEED v4: Building Operations + Maintenance GuideLEED rating system selection guidanceGuide to the LEED AP Operations and Maintenance (O+M) Exam
Which of the following is a feature of the ENERGY STAR® Portfolio Manager?
Answer(s): C
The ENERGY STAR® Portfolio Manager is a tool that helps measure and track the energy and water use, waste and materials, and greenhouse gas emissions of buildings. One of its features is that it requires the calculation and input of site energy usage. This is essential for assessing the whole building energy performance and tracking changes in energy over time12.
ENERGY STAR Portfolio ManagerAn Overview of Portfolio Manager - ENERGY STAR
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