habitat for humanity- dream dallas home design
DESCRIPTION
design for potential dream dallas homeTRANSCRIPT
dream dallas home design competition mid century modern revival / #32
project summary 4
strategy diagrams 8
systems perspectives 12
LEED analysis 16
site typologies 6
exterior elevations 10
costs analysis 14
visualizations 18
_precedent charged by dallas habitat for humanity and the dallas ica to create a house that is modern, economic, and sustainable within a vernacular texas style of our choice, we as a team began by finding the core values inherent ineach style and discovering what fit best with our vision.Mid Century Modern was a time when the charge of architecture was culture not industry, and the evolution of spacewas about economy and craft. use of prefabrication along with conventional construction began a new stride in the style of architecture across the nation. The house became about shelter and the eternal communication betweenindoor and outdoor environments.
In addition to the stylistic vernacular we also studied the physical building typologies inherent to Texas and thegulf coast region. In our investigation we explored two distinct forms of vernacular architecture in conjunctionwith mid century modern.
The “shotgun” is a long bar of a house with all rooms group in rows and stoops that adornthe front and possibly rear of the house. It is an economical easily constructed typology.
The “dogtrot” is a passively configured plan type that utilizes a bisecting covered “porch” usually splitting the program space in two to collect prevailing winds thus decreasing necessatation of mechanically cooled spaces (intemperate weather)
combined we can develop a scheme that is compact yet spacious and delivers a passively cooled, historicallyinspired, economic product.
_conceptcompaction and sustainability was our main focus. the linearity of the site lent itself to design a two bar scheme. the bars slip past one another to form served and service spaces while generating a compact plan. the public and private zones are bisected using an open to air “dogtrot” breezeway that at times can double as anciliary space. a series of “mass” walls direct spatial layout and shelter the building fromsolar heat gain. cedar infill panels, low slung roof planes, expansive glazing and a central hearth are evocative of the mid century modern period.
_constructiondrawing inspiration from mid century modern architecture, we implemented a 4-foot module, optimizing the use of conventional building materials and facilitating an ease of construction. CMU blocks and structurally insulated panels (SIP)require minimal cutting and vir-tually eliminate on-site waste. the use of reclaimed masonry, cedar siding and railroad ties also contributes to the environmential re-sponsiveness of the house.
_stewardshipwe spend 80% of our time indoors, as such it is only reasonable that our buildings be responisve and interactive to the environment in which they are sited. in this design the decision to collect and use rainwater should prove beneficial for the house. Rainbarrels on the east facade collect and store rainwater for a subsistence garden in the rear yard, a bioswale becomes the sited street edge, remediating runoff from the roof and the street prior to discharge into the remainder of the site. reclaimed and recylced materials, high efficiency envelope components and proper planning yield a sustainable,successful designthat is true to the core values of mid century modern and expressive of sustainability + economy.
project image
typical frame2/3 impervious
“L” planpervious edge
density boxpervious fringe
“L” internalprivate court
bar edgepublic garden
shifted barpervious edge+ 2/3 permeable
“L” planpervious public edge
double boxdissolution of yard
“L” plan mirrorpublic court
typical framemirrorpublic pervious edge
pueblo street
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1
3
6
579
8
9
11
9
10
1
9 10 11
recycled railroad tie walk
bedroom subsistence garden bioswale
pervious drive native grasses garage utility living kitchen dogtrot2 3 4 5 6 7 8
N
shotgun-stoop edge, external court
shotgun + country porchminimizes passive strategies
country porchinternal edge
country porch + shotgundisolution of entry
country porch + dogtrotaxial plan = space division
shotgun + dogtrot + countryporch exceeds site usage
shotgun + country porchmaximum external exposure
country porch- external court, urban edge
dogtrot - passive cooling, internal court
dogtrot + porchdefinitive edge condtion
dogtrot + shotgunexternal court + definition of site
dogtrot + porch + shotgunexternal court + passive cool + implied urban edge
solar study
high noon reflective roof surface bounces back solar radiation
operable windowunits help infiltrationof prevailing breezes
east/ west house placementpromotes cross ventilation
rain barrelscollect roof runoff for irrigation purposes
street edge bioswalecollects roof and street runoff and filter the waterby natural means
insualted roofpanels mitigate transmittedheat
summer
winter
passive breeze collection
rain water rentention
constructed dogtrotpassively collects and distributestemperate breezes into livingspaces
strategic openings helpinfiltration of temperate breezes
minimzation in openingsat western facade helps reduce cooling loads
“dogtrot” breezewayenhances passive coolingin temperate weather
deep overhangsprevent harsh west light
native plantingfosters water remediationand a maintenance free yardyear around
west elevation
p1979 pueblo1979 pueblo99779911 pu11999797999 ppupu bblbb ooooooooo
site bioswaleset at western edgebecomes a visual buffer at the street edge
recycled railroad tiesprovide an attractive walk and house marquee
reclaimed cedar shiplapadornes the facade as a rot resistant siding material
rain barrels collect and store roof runoff for irrigation purposes
south elevation
section pers
pective thro
ugh living r
oom
$1/sf2000 sf $2.50/sf
800 sfvaries$8000
2x dinensional lumber
reclaimed shiplapcedar panels
generic tin roof
concrete foundation $8000 doors and windows $10000 misc.framing $600 millwork $8000 interior finishes $6000 hvac $12000
metal roof panel roof SIPS and rafters roof framing
$2.65/sf1100 sf
$3.30/sf1265 sf
4”d x 8”h x 16”lrecycled cmu
4’ x 8’ nominalSIPS
plumbing $10000 lighting $4000 site and landscape $12000 = $85,600 or $66.15/sf
cmu walls SIPS
costs analysis
LEED FOR HOMES
IDIntegrated Project PlanningDurability Management ProcessInnovative Or Regional Design
LL Location and LinkagesSite SelectionPreferred LocationsInfrastructureCommunity ResourcesAccess to Open Space
SS Sustainable SitesSite StewardshipLandscapingLocal Heat Island EffectsSurface Water ManagementNontoxic Pest ControlCompact Development
WE Water EfficiencyWater ReuseIrrigation SystemIndoor Water Use
EA Energy and AtmosphereOptimize Energy PerformanceWater HeatingResidential Refrigerant Management
MR Materials and ResourcesEfficient FramingEnvironmentally Preferable ProductsWaste Management
EQ Indoor Environmental QualityEnergy Star with IAPCombustion VentingMoisture ControlOutdoor Air VentilationLocal ExhaustDistribution of Space Heating and CoolingAir FilteringContainment ControlRadon ProtectionGarage Pollutant Protection
AE Awareness and EducationEducation of Homeowner or TenantEducation of Building Manager
pts. possible
11 4
34
1124151
22161724
15456
383431
16583
2113323343413
321
136
pts. achievable
6312
722111
16161512
10343
181521
10442
1313
3
83
bio swale for water collection/ remediation
reclaimed and efficient framing material= less waste, more efficiency
rainwater collection for irrigation
subsistence gardern promotes off grid living LEED analysis
western facade