zero-energy building fall 2013
DESCRIPTION
This project was from our assignment to make a building with low-to-none energy used based on different types of climates. My site was Phoenix, Arizona. Hot and arid. This project is about designing a house fitting some building regulations, optimizing angles of overhangs, windowsizes and placements and other techniques such as light tunnels, insulation placement, alignation and solar panels.TRANSCRIPT
North east elevation (obs: Mountain has been partially cut)
South east elevation (front) South west elevation (obs: Mountain has been partially cut)
North west elevation not possible due to mountain.
1 2 7m
Light tunnels
Section A facing patio
Section B and sun angles
Section A facing patio
SECTIONS AND ELEVATIONS
Carl Heintz 2013
Bedroom Bedroom Kitchen and dining M. Bedroom Bath
M. Bath M. Bedroom
Light tunnels
Window and wall detailOBS: The smaller text nd the arrow (>) means door leading to stated room.
DETAILS, PERSPECTIVES AND AXOS
+4.06 m
+3.73
+2.51
+2.07
+1.67
+1.26
+0.08
0
-0.096
-0.73.8 m-0.298 0 +0,09 +0.49 +0.94 +2.91m
Drip groove
Prevents rainwater to drip
into concrete execessivly
Photovoltaic panel
Faces south to optimize sun intake
Railing
Grass-roof
This thickness lets 50% of
the rainwater stay.
Good natural insulation.
Beauthiful and comfortable
Damp-proof membrane
Prevents excess moist
into the concrete.
Gravel
Works as a bu"er and
drainage for excess water.
Damp-proof membrane
Insulation
Jaloussi mechanism
Functions as overhang as
well as it re#ects light.
Makes it easy to choose how
much light and air goes in
EFIS on the outside facade
Insulation on the parts that receieve the most sun.
Placed on the outside of the wall.
Carl Heintz 2013
Patio
Bedroom
M. Bath
M. bedroom
Kitchen & dining
Bath Entry
Bedroom
Bath
Point of entry
Parti
Design phases and process
DESIGN PHASES AND PROCESS
The building has been redesigned several times.
It started with a lot of reading regarding what is optimal for a site like this, dry and very hot.
After going through case studies and a lot of material, I decided to avoid getting into the habit of reasoning that every-
thing can be handled with solar panels. They are getting more and more e"ective but focusing on envelope, direction and
other factors are important parts, probably far more important than the panels themselves, also cheaper.
I quickly decided to do a submerged building.
After that, I realized it would be in line with the environmental concept to make the building a part of the landscape. The
facade is taken from the outlines of the topography but just extended a bit. Green roofs and a lawn will add comfortability
to the site.
Another important issue was overhangs. How much above the window, how far out etc all depends on the elevation and
the angle of the sun at the speci$c place. I luckily found several tools that will be invaluable for the future.
The only problem with this was that it, despite having somewhat curved angles, looked like a box. Therefore I decided to go
with doing something more interesting on the inside. I recently lived in a house with very many di"erent angles and walls.
Instinctively you react negatively to that but then after awhile I realized that it adds character to the building. I wanted to to
do something with that.
Then problems arised with the usage of space, a lot was considered to be sub-optimal and that idea got changed. Again, I wanted to escape from the plain box. I
therefore thought to bring in di"erent heights for the entry, the living room and the kitchen to add depth.
This was not appreciated since it adds complications to the construction. Likewise, other limitations such as building code required retaining walls on the topmost
of the roof (facing northwest) as well as a safety railing on the roof to prevent children etc from hurting themselves.
The last big problem was the stairway and the lawn. To get that working well was challenging since the topography was somewhat awkward, I did retaining walls
and I wanted comfortable stairs, limit the amount of dug-out as well as I did not want to use loads of material.
ergederged dingding.dingdingdingding.dingding.ding
Carl Heintz 2013
The concept of parti-model was new to me
but I found it interesting. I went through 9
m or designs with tunnels, a two-storey
building, trap doors, waterbuckets reaching
through to the second underground level, a
more abstract roof, curved walls. The even
more basic version of this parti was done all
before that and it more or less ended up
exactly as the $nal approach came togeth-
er.
Some elements such as the water re#ecting
light disappeared due to measurements of
the big windows and was replaced by a
jaloussi-window. The same can be said
about decidiuous trees.
Green roof
Light tunnels
Photovoltaic panels
Decidiuous trees (later dismissed)
Green lawn
Water re#ecting light inside
(later dismissed)
Building submerged and
integrated with the mountain
PLAN, SITE AND ADJUSTMENTS
Climate adjustmentSubmerge building Cools the building down by the cooler ground.
Insulation placement Insulated the facade to keep the warm out but not on
the ground letting the mountain cool down the hot inside.
Localization Align towards the southeast to get the most sun band thus
natural light but keep itaway from that strong western sun.
Solar panels Solar panels facing the south on top of roof to bene$t from
the large amount of sun in the area.
Light tunnels Replace the need the light bulbs and let the sun give natural
light through the roof.
Green roof Works as a great insulation as well as it blends in with the
nature.
Footings
Overhang
Start of slope
Light tunnels
Carl Heintz 2013
CSubm
Insu
the
Loca
natu
SolaSola
the the
Ligh
ligh
Gree
natu
Surroundings5 minutes away - Minor city with grocery store
30 minutes away - Phoenix (larger city).
This is a newly developed area starting out with building 10 buildings and if that is a
success, nearby buildings will be constructed along the hill.
Point of entry
ENERGY USAGEPhoto voltaic panels to generate most of electricity to take advantage of the strong
sun. Usage of several light tunnels to replace the need for electricity that takes up
25-35% of the energy usage in a normal household.
These are strategically placed since the frontfacing rooms already have big windows.
To further decrease our need for HVAC we will submerge the building to limit the
exposure for the sun. This will make it naturally more insulated. We will place insula-
tion on the outside of the sunfacing facade to prevent overheating while we will not
insulate the part facing the mountain for it to cool down the building.
Overhangs are used with an angle to let sun in during the cooler winter while the
overhang protects it from the higher summer sun.
Overhang
Light tunnels
Point of entry
N
North america
Arizona
Black Canyon CIty
Plot and surrounding topography
N