Hi! I was wondering why does LEED require to run a simulation on the 21st of september? It also requires to perform the simulation during a clear sky condition.

As part of this credit, LEED Canada 2009 requires the owner to implement a management plan to minimize pollution and eutrophication of waterways from excess nutrient pollutants such as nitrogen and

I had a response from an energy model reviewer indicating my r-value calculations are not acceptable because we failed to derate the 3.5" R-11 batt insulation per Table A9.28B of ASHREA 90.1-2007.

Several of the toner cartridges that our buildings routinely buy claim to have recycled content, but their product documentation does not specify whether it is post-consumer or post-industrial mate

Hi All, We are interested in attempting the exemplary performance point 2 for this credit on a five story collegiate residence hall.

We are currently working on the design of an iconic building that has 2 layers of facade.

Hi, How is possible to consider Exterior Lighting Energy Consumption on a Multiple Building Process where there is no specific boundary per each building?

Where do the no smoking signs need to be located? All exterior doors? Only ingress doors? Thanks, Crissy

Hello, Is there a guide or list somewhere as to what materials are acceptable to use for insulation? We want to know what options we can use. Thanks. John

Hi! Our project is pursuing both MRc3 and MRc9.