Ed Richardson contributed an article to the Nov / December 2011 issue of Texas Architect discussing the design and sustainable systems featured at the Waco Mammoth Site. Some excepts below from the section on the envelope design:
Cotera + Reed used the integrated design of the structure and conditioned enclosure to both keep out harmful agents of deterioration and temper the environmental forces acting upon the dig site. They took advantage of the 8’ thickness required by the long span roof structure by simultaneously using that volume as a something akin to a ventilated attic. The firm likens the strategy to “a trailer home where the owner has installed a metal roof to keep the sun off of it.” In addition to the metal roofing at the top of the trusses, they proposed a secondary ceiling complete with insulation and a vapor barrier also be installed below the roof trusses. This strategy, coupled with the use of perforated panels at the eaves, allows for air movement through the double skins of the roof, thereby reducing the direct heating and cooling load on the building perimeter.