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"Be the change
you wish to see
in the world..."
            -M. Gandhi


t a k i n g   g r e e n   t o   t h e   e x t r e m e

 
RUBBLE TRENCH FOUNDATION 
WORKSHOPS & INFORMATION

learn more...

A rubble trench is an age-old foundation system that provides bearing strength with a dry footer.  A rubble trench foundation consists of a trench dug to frost depth and sloped to daylight that is lined with filter fabric and filled with crushed stone or recycled concrete.  This filled trench provides the bearing footer.  A grade beam runs along this perimeter to evenly distribute the building's loads.  The amount of concrete used is thus greatly reduced.  (Concrete, is a major contributor to green house gas.)  The trench requires less excavation while providing continuous drainage of water, thus eliminating the #1 contributor to foundation failure.

We teach 1-day rubble trench workshops to install rubble & formwork for small scale projects!  Check HERE for a listing of upcoming workshops.  Contact us for additional information.

WORKSHOP INCLUDES
  • description of a rubble trench foundation, including benefits and standard detailing

  • tamping requirements 

  • forming methods and non-toxic release agents for the grade beam

STRAWBALE WORKSHOPS COB WORKSHOPS CLAY PLASTER WORKSHOPS
LIME PLASTER WORKSHOPS NATURAL PAINT WORKSHOPS EARTHEN FLOOR WORKSHOPS
LIVING ROOF WORKSHOPS PAPERCRETE COUNTERS

   

Down to Earth Design
Sigi Koko, principal
215.540.2694 PA
202.302.3055 DC
admin@buildnaturally.com

2000 Sigi Koko & Down to Earth