ID#5885 made on
MRc1.1 - Building reuse - maintain 75% of existing walls, floors and roof
LEED BD+C: New Construction
The Parker Block is listed on the National Register of Historic Places and is being renovated according to their standards to the fullest extent possible. We are planning to maintain nearly 100% of t...
The Parker Block is listed on the National Register of Historic Places and is being renovated according to their standards to the fullest extent possible. We are planning to maintain nearly 100% of the shell, but will need to make some upgrades in utilities, lighting, etc. For example, we are providing a new water line in a new location, does the volume of foundation removed for the pipe subtract from the shell? What about mounting of exterior lights, or drilling other minor holes? We are also restoring original window/door openings by removing brick infill etc.; does 'shell' include infill added after original construction to close up openings? Minor portions of the wood roof deck needed to be replaced due to water damage, should this be subtracted from the shell? For reusing nonshell portions of the building, we are maintaining nearly all of the existing/originial partition walls, but have removed all plaster from walls and ceilings, and some original millwork due to age, abuse, and water damage. How should this be figured? We are also abating asbestos floor tile, does this subtract from nonshell? I believe we will meet the requirements for MRc1.3 as clarified by the 5/19/2004 MRc1.3 Ruling, but want to calculate it correctly.
Point achievement for this credit will be based on the guidelines defined by CIR ruling dated 5/19/04. At a minimum, the project must save over 95% of structure and shell. Any % of structure and shell removed must then be made up by retained interior non-shell areas (items addressed in credit 1.3). To achieve credit 1.3, these amounts must be added to the 50% requirements for non-shell materials. For credit calculations, any volume of foundation or exterior walls removed must be subtracted from the total structure and shell. Minor holes made in the structure need not be addressed. Infill added after original construction is part of the existing building and must be considered part of the building's shell. As noted in MRc1.2 CIR rulings dated 4/5/04 and 8/5/03, the LEED version 2.1 Reference Guide specifically includes roof decks as part of the structure and shell and excludes non-structural roofing material. If the wood roof deck is a structural element of the building, it must also be subtracted from the total structure and shell. Under strategies on page 194 of the LEED version 2.1 the Reference Guide states "Identify asbestos, lead-based paint and any other contaminants in the building and apply required or appropriate removal or isolation measures." Materials containing asbestos should be abated and can be excluded from credit calculations so that there is no penalty for removing hazardous material. Partial credit for plaster and millwork will be accepted based on percentage of remaining wall system (by weight). Example: if the existing plaster-surfaced partition weighs 20 psf, and the weight of the saved portion of the partition is 5 psf, the team may take credit for saving 25% of the area of these partitions. Applicable internationally.
Related Addenda (Corrections & Interpretations)