May be this is a very basic question. But I would like to know from you all, how can we determine whether a open grid paving block is 50% previous or not?

From my understanding, in order to pass the test for PM2.5 and PM10, EPA Compendium Method IP-10 has to be used.

i want some clarity on whether it is necessary to include Lift lobbies in VRP calculation to demonstrate compliance under IEQp1 and IEQc2? These lift lobbies are not regularly occupied.

Hi everyone, I got a question about the calculataion of Volume of captured run off; In the formula,(V= P.A.R/12) P value is taken according to the location of project ; humid ,semi arid and arid.w

RE: usgbc.org/leedonline, CS2009 MRc5 I do not see a form or calculator for material tracking or other forms/upload requirements for this credit documentation.

Dear all, Does anyone know if there is an ACP rule for sampling points for the air quality tests.

Some of our team members have changed throughout the lengthy design and construction process of a Major Hospital.

A company that occupies an entire floor of an existing building has been in operation in this building over 2 years. They asked if they could get LEED Certification for their office.

Hi, To do the baseline model envelope I believe I should use the existing one (previous to any alteration).

Hi, we are certifying a new C&S building, in v2009. The version of Ashrae 90.1 to follow is 2007?