Hi,

I'm looking for some assistance in relation to the materials credits, namely:

1. Environmental Product Declarations

2. Material Ingredients

Quoted from the reference guide: "Structure and enclosure materials may not constitute more than 30% of the value of compliant building products." How does LEED define enclosure and structure materials? 

I am looking for guidance on the following products as to whether they should be deemed structure/enclosure or not:

1. Ceiling Panels

2. Raised Access Flooring

3. Floor Covering

4. Glass Mineral Wool

5. Plasterboard (Internal)

6. Fire Resistant Glass

7. Gyframe Metal Framing Components for Gypsum

8. Gyproc Finish Plaster