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NC-2009 MRc2:Construction Waste Management

To weigh, or not to weigh?

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Lawrence Lile
Chief Engineer
Lile Engineering, LLC
LEEDuser Basic Member
59 thumbs up

We have a project with some existing asphalt pavement that will be busted up and used as clean fill on the same project. Will LEED accept measurements of the length, width and depth of this material instead of trucking it offsite to get it weighed? What if these measurements were done by a licensed Civil Engineer - would that make them more credible?

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Profile picture for user Susan Di Giulio
Susan Di Giulio
Senior Project Manager
Zinner Consultants
LEEDuser Basic Member
110 thumbs up

Wed, 04/09/2014 - 01:15

I would do it like this: I recall there is an official volume to weight conversion chart on the USGBC site somewhere; possibly even in the credit resources tab in the right-hand box of the credit info page on line, or in the Ref Guide. Measure the asphalt and photograph the measuring so that actual distances are readable on the tape, as proof of volume. You can upload those photos. Then make the calculations using the table.
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LEEDuser Expert
472 thumbs up

Wed, 04/09/2014 - 01:24

Susan - Thanks for getting Lawrence headed in the right direction! Lawrence - You do not have to weigh. Have whoever did the measurements now develop a volume in cubic yards. Then they can calculate a weight in lbs based on the Solid Waste Conversion Factors are located in Table 2 on page 360 of the first edition of the Reference Guide. Having a qualified professional familiar with the asphalt will be a bonus for your piece of mind and will be useful in case there is a question about the diversion but a licensed Civil Engineer is not required.

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