CCAT GREENSHEDReviewed by: Everett Williams,

Jacquelynn Dufour

GREENSHED WALLS• Engineering 305 class –Spring

2010• Building with natural materials/

Low embedded energy• Shared constraints• Breathable materials• Minimum upkeep

Cob Wall• Act as a heat battery for the shed• 2:1 ratio of clay/soil• Mixed materials using burrito

method• Issues with bulging clay

Cob Wall• Cracks forming along edges

Clay-Straw slip Wall• Maximize sunlight and provide

insulation• 4:1 ration of clay/water and 3

bales of straw• Clay-straw pressed in forms • Issues with preexisting top beam

and crossbeam

Clay-Straw slip Wall

Cordwood Wall

• Provide insulation to shed• Western cedar used for local

availability and rot resistance• Mortar recipe included

Portland cement, sand, saw dust, and hydrated lime

• Big issue was lack of labor help

Cordwood Wall• Apply new mortar• Wood has shrunken

causing gaps

THANKS!!!!Questions/more information

• http://www.appropedia.org/CCAT_greenshed_west_wall

• http://www.appropedia.org/CCAT_greenshed_cob_wall

• http://www.appropedia.org/CCAT_greenshed_cordwood_wall