I seem to be on the chemical redlist circuit this month. Last night at GreenBuild I attended Perkins + Will's panel-and-schmooze event to discuss their brand new precautionary list of 25 chemicals that P+W wants to see out of building products. They've created a publicly available website with their avoid list and you can view the list by MasterFormat divisions, or by health effect, not just by chemical.
| After in excess of two hours' heat source contact, Timbersil has suffered some charring. The control structure behind it has burned completely. |
This credit requires that you demonstrate energy savings from HVAC systems and components within your project scope—only systems installed as part of the LEED-CI project, or systems within the LEED boundary. (See more detail on scope below.)
There are two options for achieving this credit, either of which could earn five or ten points for your project.
Pursuing this credit means using a high level of air filters at your outside air intakes. To earn this credit, MERV 13 filters must be used at all outside air intakes—no spaces may be omitted. As of November 2010, however, a USGBC addendum removed a requirement for return air circulation to also have MERV 13 filtration.
In a marked change from LEED-CI 2.0, which only addressed daylighting, this credit addresses occupancy and daylighting sensors. Three points are available, with each of the following strategies earning you one point:
Standards keep getting tighter: a lighting design that was considered very efficient a decade ago won’t earn you any points under this credit today. Even today’s standard practice is not likely to earn you points, so don’t fall in the trap of waiting until the lighting design is complete to calculate the project’s lighting power density. Instead, incorporate lighting power optimization strategies early in design to optimize lighting power density for your project and earn up to five points here.