In the past 6 months we have noticed that a high recycled content of 70% or more has been required on acoustic ceiling tile.

General emissions requirements as per LEEDV4 - TVOC's result after 14 days but the information available in accordance with ISO1600 method, TVOC testing results after 28 days.

Table 6.4 of ASHRAE 60.1-2010 states that parking garages that don't have walls that are at least 50% open to the outside shall have mechanical air extraction (exhaust ventilation).

During demolition works, should the Erosion and Sedimentation measures be implemented? The Reference Guide only refers to construction works...

what is the area of reference to calculate the number of parking spaces? gross floor area or usable floor area?

Does anyone know a definition for "single supply system". I've looked it up in ASHRAE 62.1 and ASHRAE's Manual and I wasn't able to find it.

Some years ago the facade of an existing building was demolished. The facade was completely glazed. The structure of the building (pillars, beams) was conserved.

Hello, We're pursuing Option 1. Nonroof and roof. Questions: 1. Is a top level of multi storey parking garage exempt from Option 1 calculations if it has parking spaces?

Hello, Is it possible to pursue this credit in a Core&Shell certification in the Innovation section ?

There are no LEED v4 ND RP credits on the regional priority credit lookup on the USGBC website. Can these projects receive RP credits?