Best Practices

Provide as much project and design detail to the modeler as possible. A checklist is typically developed by the energy modeler, listing all the construction details of the walls, roof, slabs, windows, mechanical systems, equipment efficiencies, occupancy load, and schedule of operations. Any additional relevant information or design changes should be brought to the modeler’s attention as soon as possible. The more realistic the energy model is, the more accurate the energy use figure, leading to better help with your design.

The design-case is modeled using the schematic design, orientation, and proposed window-to-wall ratio—¬the model will return design-case annual energy costs. Earn points by demonstrating percentage reductions in annual energy costs from the design to the baseline case. EAp2 is achieved if the design case is 10% lower than the baseline in new construction (or 5% less in existing building renovations). 

The baseline model is the designed building with mechanical systems specified in ASHRAE 90.1-2007, Appendix G, for the specific building type, with a window-to-wall ratio at a maximum of 40%, and minimally code-compliant specifications for the envelope, lighting, and mechanical components. It can be developed as soon as preliminary drawings are completed. The baseline is compared to the design case to provide a percentage of reduction in annual energy use.

Review and confirm compliance with the mandatory requirements of all the relevant sections of ASHRAE 90.1-2007

A carpooling program can be a great opportunity to talk to students about alternative transportation options and to raise awareness about personal carbon footprints and other environmental issues related to transportation.

Communicate with staff, parents, and students about vanpooling and carpooling. Take this opportunity to develop an education program. Develop literature, and post signs in public areas and notices on the school’s website. Make it as easy as possible for people to find out about and use the program.

Involving facilities staff in the design process can further inform key design decisions, helping ensure successful operation and low maintenance costs.

Load reduction requires coordinated efforts by all design members including the architect, lighting designer, interior designer, information-technology manager, and owner. 

Use envelope design and passive strategies to reduce the heating and cooling loads prior to detailed design of HVAC systems. Passive strategies can reduce heating and cooling loads, giving the engineer more options, including smaller or innovative systems.

Communicate with parents, staff, and students about carpooling opportunities and preferred parking for carpools.