I'm a little confused about when the performance period for the building I am certifying should start. They have an Energy Star rating of 85 which was given to them in March of 2010. They will...

A central chiller plant supplies chilled water to our project building and several other buildings. In order to generate the Energy Star report, we are required to input the chilled water energy...

My manufacturing facilty has more than one kind of process type water user, and they are very distinct. LEED says "Meter at least 80% of expected daily water consumption for process type end uses...

1. What is the difference between an open web steel joist and a plain steel joist? Which is a better approximation for typical steel construction of Wide Flange beams and composite concrete...

I understand that turf is not compliant "native and adaptive ", but is there an exception for using Grasscrete for the fire lane instead of paving? Can we exclude this from our calculations to...

We have a project that uses a waterstop in an elevator pit. The waterproofing is on the exterior side of the concrete. The waterstop is nestled between two slabs of concrete and there are no...

Thanks to all those who have commented, and to Tristan for the article. We’ve been working hard on the LEED Interpretations program, and we’re excited to get Phase I out to the world. I’d like to...

We have a main, fire water and irrigation meter. If read weekly and calibrated properly we have what is needed to obtain 2 points in this credit. We have listed other submeters in the template...

I'm having a hard time understanding what I should actually use here to put in the online forms for...

If pre-1993 plumbing fixtures are still in place (i.e. the bowls), but their flush valves have been replaced post-1993, does that count as 'plumbing renovation' / fixture replacement for the...