SIREWALL® Cutaway
A) Rubble trench—4-inch bed of drain rock
B) Reinforced concrete footing—up to 6 feet
wide
C) PVC, ABS or PE drain pipe
D) Interior rammed earth wall, reinforced with
steel rebar
E) 4” foam insulation
F) Exterior rammed earth wall, reinforced with
steel rebar
G) PVC or EMT pipe to function as electrical
conduit
H) Wooden top plate, anchored to wall, ready for
roof truss
I) Interior floor
J) Oil or water-based acrylic sealer to prevent
dusting
What’s not visible in this diagram - How the strength of a stabilized, insulated rammed earth wall can vary when constructed.
Depending on how a rammed earth wall is built, these factors can dramatically affect the overall strength and durability:
Too much or too little moisture – 40% difference, best to worst Pneumatic tamping or wrong tampers – 25% difference
Hand tamping or wrong tampers – 50% difference Control of lift depth – 50% difference
Curing – 50% difference Material management – 30% difference
Mixing – 75% difference Consistency of soils used – 25% difference
The SIREWALL System uses a proven series of protocols to consistently achieve the highest possible wall strength.