I recently opened the LOL V3 NC form for IEQc3.1 and found that Table IEQc3.1-1 has three new columns - CEN Rating, Min Dust Spot Eff and Arrestance in additon to the MERV rating.

We are building a new building with concrete precast wall and roof panels with a concrete slab-on-grade.

Dear all, During the construction phase, the contractor asked to use pesticides once per week within the building.

I'am confused about the document entitled "IAQ Management Plan" that is required under both; IEQc3.1 and IEQc3.2. Should I prepare only one document including IAQ during construction and flush-out

We are using Mitsubishi fan coil units on a project and provided a description of the permanent filter type in lieu of the MERV rating requested in the table for IEQc3.1.

Hi, My project is under construction, but just structural work (finalizing substructure and launching superstructure). It is long way to furnishing and MEP work onsite.

Dear all, I read it's necessary to do 3 date & time stamped visits with 6 photo for each visit to submet on LEED Online IEQ credit 3.1. It is true ?

If the HVAC system wasn't running during construction of a new building, what is the requirement for documentation? We have dated checklists documenting that the HVAC system wasn't running and that

We have an issue with a General Contractor on a project.

Hi All, Compliance with this credit in fully ducted return systems has been straight forward, however, the LEED Reference Guide is not too clear on how exactly open plenum return systems are to be