h4h hale by smmk

SARAH MORRIS ARCH 322 Spring 2012 Professor C. Bergum University of Hawaii at Manoa

The Lighthouse UK Architect: Sheppard Robson

Truro Beach House Architect: Zero Energy Design

Yannell Residence Architect: Farr Associates

Foam Insulation PV Panels

Maximize Light Efficiency Indigenous Plants Renewable Furniture Low – No VOC Materials

Permeable Driveway

Butterfly Roof Permeable Pavement Recycled Contents

Low Flow Water Features Zero VOC Paints

High Performance Structural

Insulated Panels (SIPS) Pitched Roof with Solar Panels Water Efficient Features

The H4H Hale is a proposal for Honolulu, Hawaii to utilized for future Habitat for Humanity construction projects utilizing innovative technologies, basic passive methods, and considerations of landscape and neighborhood into the design. The H4H Hale addresses the natural trade winds provided through topography, moderate to heavy rainfalls seasonally, and sunlight opportunities. This design also adheres to a multitude of LEED objectives to reduce the overall impact of the carbon footprint. This simple home alters the basics and creates a uniquely intimate residence on the corner of the local neighborhood Papalokea, ready for its new family. The design features that I introduced in this design to reduce the effects of construction include: aluminum louvers, indigenous plants, indoor plants, low-flow water features, maximize light efficiency, natural ventilation, photo voltaic panels, porous pavement, repurposed furnishings, spray foam insulation, rainwater catchment, vinyl siding, water catchment system, and zero VOC paints.

The orientation of the structure maximizes the use of wind. Whereby, when the windows are opened, every room is designed to be able to redirect air. With two windows in each bedroom and living space, the opportunity for natural ventilation is enhanced, in addition, a wind tunnel opportunity from air descending from the northern elevations envelopes the southern facade. The landscaping creates shading and privacy from neighbors, if needed, to enjoy the outdoor space created. The concrete slab for the outdoor space is a porous pavement, which can absorb water and redirect into irrigation pipes below into the watch catchment system or into the local runoff system. The blue containers are recycling bins, which allow the homeowner to sort recyclable as needed.

Having a glass door that leads out to the covered exterior courtyard gives a sense of additional space, without the additional square footage. This space provides a nice gathering moment for friends and family. The glass door not only acts as a passage to access the back yard, but permits wind to infiltrate. Even on heavy rain days, the designed retaining wall can deflect the quantity, while allowing excess to permeate through the porous aspect of the concrete. And keeping in mind the accessibility for all users, a small sloped ramp is provided.

The front exemplifies the use of vinyl siding, green vertical trellis’, a bike rack, photo voltaic panels, local lava rocks, and landscaping to control erosion. The use of vinyl

is apparent on the siding and decking. Vinyl is a low cost option with low maintenance, while providing a clean aesthetic to the home. The decking ramped up, is raised 1 foot to give a bit of aesthetic and protection from the heavy rains. For cooler days, the warmth is maintained, without air infiltration, due to the application of spray foam insulation. The vertical trellis’ can provide owners the option to grow vegetation as well as reducing the heat gain. The bike rack is a nice option for the owner and company who choose to ride over or who catch the local bus. The photovoltaic panels help reduce energy costs while catching the warm western rays.

The interior space creates a well-lit atmosphere for an intimate gathering, as the elongated fixed windows frame the west landscaped views. Heat gain is also reduced

with the assistance of non-mechanical aluminum louvers which provide shade or glare onto the windows. By providing indoor plants, not only provides a beautiful aesthetic, but also decreases the airborne pollutants that can cause poor indoor air quality.

Address: 580 Auwaiolimu Street City, St: Honolulu, HI 96813 Neighborhood: Papakolea TMK: 24041020 Lot Sq. Ft.: 7,396 Latitude: +21.30694 (21°18'24.984"N) Longitude: -157.85833 (157°51'29.988"W)

http://www.usclimatedata.com/climate.php?location=USHI0026

http://www.windfinder.com/windstats/windstatistic_honolulu_airport.htm

http://www.gaisma.com/en/location/honolulu-hawaii.html

WIND DIRECTIONS TEMPURATURES & RAINFALL SUN PATH DIAGRAM










DESIGN FEATURES Aluminum Louvers Indigenous Plants Low Flow Water Features Maximize Light Efficiency Natural Ventilation Photo Voltaic Panels Porous Pavement Repurposed Furnishings Spray Foam Insulation Vinyl Siding and Decking Water Catchment System Zero VOC Paints


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NORTH ELEVATION EAST ELEVATION

WEST ELEVATION SOUTH ELEVATION


EAST – WEST SECTION

SOUTH - NORTH SECTION

WEST – EAST SECTION


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FRONT SOUTHWEST EXTERIOR BACK NORTHEAST EXTERIOR

INTERIOR VIEW OF KITCHEN INTERIOR VIEW OF LIVINGROOM

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Kokio ke‘oke‘o Hibiscus arnottianus ‘Ōhi‘a Metrosideros spp. Naio Myoporum sandwicense

ALUMINUM LOUVERS Prevents unwanted solar heat gain Reduce 60%-90% of UV rays Reduce electricity bills Window thermal performance increased about

15%

SUSTAINABLE FEATURES Natural Ventilation Indigenous Plants Re-purposed Furnishings Porous Pavement Insulated Vinyl Siding Aluminum Awnings Photo Voltaic Panels Spray Foam Insulation Rainwater Catchment/Storm

Water Control Zero VOC Paints Low-Flow Water Fixtures Maximize Light Efficiency

SUSTAINABLE FEATURES Natural Ventilation Indigenous Plants Re-purposed Furnishings Porous Pavement Insulated Vinyl Siding Aluminum Awnings Photo Voltaic Panels Spray Foam Insulation Rainwater Catchment/Storm

Water Control Zero VOC Paints Low-Flow Water Fixtures Maximize Light Efficiency


• Captures, filters and reduces storm water runoff • Eliminates need for ponds, swales, and other storm water management devices – thus reducing initial

construction costs • LEED applicable:

• Storm water Management (6) • Minimize Site Disturbance (SS 5) • Local (M 5) • Recycled Content (M 4): fly ash, slag cement, or silica fume substitute for cement • Cool (SS 7): Reduces heat island effect

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NATURAL VENTILATION DIAGRAM FLOOR PLAN

NATURAL VENTILATION DIAGRAM SECTION

Roof R Air Film Outside, Summer, 7.5 mph 0.25 Grey Asphalt Shingle 0/30 lbs felt 0.44 1/2” Douglas Fir Plywood 0.62 3”-8” Airspace 1.00 12” Thermal Batt Insulation 38.00 ½ Gypsum Wood Board 0.32 Air Film Inside 0.92 Roof Average 41.55 Wall Air Film Outside, Winter, 15 mph 0.17 1 1-2” Prodigy Insulated Vinyl Siding 5.00 1/2” Structural Plywood 0.62 ½” Air Space 0.90 12” Thermal Batt Insulation 0.0 - 38.00 Repurposed Douglas Fir Stud 1.25 - 0.0 ½” Gypsum Wood Board 0.45 Air Film 0.68 Stud / Batt = 1.25 / 45.82 Wall Average = 5.91 / 40.65 Entry Door Air Film Outside 0.25 Single, Metal Insulating (2" w/ urethane) 15.00 Inside Air Indoor 0.68 Door Average = 15.93 Floor Air Film Inside (Horizontal, Upward, Non-Reflective) 0.92 Carpet (fibrous pad) 2.08 5/8” Douglas Fir Plywood 0.77 3” Air Space 0.0 - 1.00 2X8 @ 16” 8.3 - 0.0 12” Thermal Batt Insulation 38.00 ½” Douglas Fir Plywood 0.62 Outside Air 0.17 Stud / Batt 11.46 / 43.56 Floor Average 42.53

U = 1/∑R U = 1/41.55+40.65+15.93+42.53 U = 1/140.66 U = 7.1

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Heating Load Calculations Honolulu, HI Design DB/WD Daily Range CDD50F Summer

87.8/73.1 12.4 9949

A u ΔT = 65 – 62.8 Peak Hourly Load Roof 1054.00 .0241 2.2°F 963.95 Btuh

Walls 337.17 .0239 2.2°F 145.02 Btuh

Door Entry 21.00 .1464 2.2°F 6.76 Btuh

Floor 1920.34 .0985 2.2°F 416.23 Btuh

Infiltration .018 .25 19203.40 190.11 Btuh

Total Btuh 686.64

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1. Change Glass to Heat absorbing Double Glass Savings Glass Door N (A=40sf) (ΔDCLF = 3˚F) 120 Btuh

Glass Door E-W (A=20sf) (ΔDCLF = 2˚F) 40 Btuh

Glass Door S (A=46sf) (ΔDCLF = 2˚F) 92 Btuh

2. Add Radiant Barrier to Roof & Walls, Cool Roof, Green Wall E/W: Roof (u = 0.0023)(A = 988sf)(DETD = 31°F) 704 Btuh

Old Roof 1,274 Btuh

Savings 570 Btuh

Walls E (u = 0.038)(A = 247sf)(DETD = 13°F) +

W (u = 0.0588)(A = 113sf)(DETD = 23°F) +

W (u = 0.0588)(A = 78sf)(DETD = 13°F) 387 Btuh

Old 695 Btuh

Savings 298 Btuh

Walls N (u = 0.058)(A = 268sf)(DETD = 13) 202 Btuh

Old 240 Btuh

Savings 38 Btuh

Walls S (u = 0.058)(A = 258sf)(DETD = 16) 241 Btuh

Old 288 Btuh

Savings 47 Btuh

Sensible Savings 1,199 Btuh

Latent Savings 360 Btuh

Sensible + Latent Savings 1,559 Btuh

3a. Add Natural Cross- Ventilation Cooling 9,250 Btuh

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Sources:

1. Textbook, Table F.5 p1654




5. Textbook Table F. 8.33 p. 285

Cooling Load Calculations Honolulu Design DB/WD Daily Range CDD50F Summer

87.8/73.1 12.4 9949

u A DETD BTUH Rentable Space 0.0241 1054.00 38 963.95

Walls N 0.0239 740.71 8 141.59

Walls E-W 0.0239 337.17 18 145.02

Wall S 0.0239 448.33 11 117.84

Glass Door S 21.00 14 294.00

Floor 0.0985 1920.34 0 0.00

Infiltration 1054 1 1054.00

#of Person BTUH/p

Occupants 4 230 920.00

Lights 100.00

Equipment 1200

Total Sensible 4936.40

Latent Gains 987.28

Total Latent and Sensible Heat Gains 5923.68

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Catchment Use Honolulu, HI annual rainfall is 21 in. Design Rainfall is 2/3 x 21in. = 14 in. Single Family Usage is 50 gal/person x 4 persons x 365 days = 73,000 gal Fig 20.5 (a) 1,664 SF Catchment area = 12,000 gal or 16.4% (of total usage) Water Conserving toilet @ 1.8 gal x 4 person x 3/day = 22 gal x 365 = 8,030 gal (This leaves 12,000-8,030 gal, or, 3,970 gal/yr. for irrigation / storage) (Use rainwater to supply toilet & balance to irrigation) Cistern Capacity Honolulu, HI annual rainfall breakdown per season is: Winter 8.65 in Spring 2.40 in Summer 1.80 in Autumn 7.78 in Since seasonal variation exists, a 60 day supply capacity is calculated to be: Volume = 3970 gal /6 mo. = 662 gal. capacity cistern Size of cistern = 662 gal / 7.48 gal /ft3 = 89 ft3 = (2) x 2.67ft. dia. X 8ft. tall tanks

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h4h hale by smmk

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