2. Depending on location, most of the original designs
used earth bricks or blocks.
Sometimes local Ag residue like wheat straw was
added.
Some were sunken, others not. Excavation adds
labor/cost.
3.
4.
5.
6.
7.
8. All we needed was a
backhoe.
The vertical braces were
made on premise with
local cement and
reinforced with steel bars.
The roof beams (next
slide) are made of
bamboo strips, (not even
full poles)
Now we can grow the
beams using live bamboo
for even more harvest
and even more green.
9.
10. Low profile
Low profile
means not so
much wind
resistance.
An earth
sheltered back
wall means
higher solar
retention. Cool air
vents
11. Technological improvements not shown
• Low-tech cooling set:
Solar chimney
Subterranean air cooling
Cold sink
• Moisture wicking set:
Condensation pathways
Drainage for excess moisture
• Solar Panels (PV)
• Passive Solar Heating (water)
• Livestock integration & or
• Aquaponics
• Organic material treatments
• Electrical driven mechanics
Substitute Heating set:
• Rocket stove
• Organic mass pellets
• Subterranean heating
• Substitute Lighting ~ green & grow
• Automation
• Robotics
• Improved Insulation
Plastic Sheeting
Accessories:
12. Addressing technical challenges
of other models
When doing anything, we should understand what things are made of,
why and how is it constructed.
• What materials are used? Sod, fired bricks, cement blocks?
• Should we have a foundation? What material?
The original idea was to collect radiant heat via solar mass but how
thick a wall is cost effective yet functions as designed?
What other technologies are appropriate and compatible to
incorporate?
I believe this would be the perfect place to try HIPR (holistic integrated
polyculture robotics)
13. Moisture
Another thing that was good about the original design & materials was
that sod, even with high clay content, is breathable. Moisture had a
chance to escape and if necessary, leach down or evaporate
through the back wall.
Excess moisture/ poor air circulation, is the number one cause and
spread of disease in CEA (controlled environment Ag ~
greenhouses).
In earth-sheltered Dapungs moisture is either wicked into the wall
structure while condensation is channeled back to the aquaponics
unit.
15. Good examples of modern
DaPung construction
My Dapung have a 2-degree slope towards
the front. There are two gutters; one on
the outside and another within. Both
channels shuttle water and cold air to a
deep dry-well, where cold tubes run
perpendicularly away from the front.
