Archive for July, 2009

Site Work: Trenching for Utilities

Tuesday, July 28th, 2009

Despite this spring’s torrential rains, excavation for the utilities and the driveway proceeded rapidly. By restricting the footprint of the utility work and quickly replacing the topsoil in disturbed areas, we prevented the site from deteriorating into an unworkable mud pit.

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It was decided early on in the project to have all the utilities enter the building from below grade. Although this not the least expensive option, it has distinct advantages. The first advantage is aesthetics as we can avoid telephone and power lines connecting to the building. The second is based on the Passive House recommendation of providing one single utility service enter into the building from below grade. Having one point of entry allows for better air sealing and reduced thermal bridges at the service entry locations.

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The water line leading from the street to the house is buried at a depth of 5 feet in order to protect it from freezing in the winter. Included with the water trench, we installed a 100 foot long, ½ inch diameter tube with a closed water loop connected to a water to air heat exchanger that will act as a preheat for the incoming ventilation air. Strangely enough, we have also run an additional closed water loop in the septic tank to utilize bio thermal heat exiting the building. To verify the performance of these lines, we have installed heat probes with both loops. We will be posting the performance of the house on line when it is complete- be sure to check that out.

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Site Work: Building Location

Monday, July 20th, 2009
Orange area proposed house site

Orange area proposed house site

The building site for the prototype was chosen for its gently rolling topography, open space and proximity to Belfast’s downtown. The three acre lot was previously used as a hay field and woodlot, but in the recent years has only been maintained as a meadow. This gently sloping landscape allows for inexpensive, low-impact construction, while the open meadow allows for predictable solar gain.

Deciding the location of the house on site is a specific task, which will impact the site’s existing ecology and appearance, as well as the home’s future use, including creating solar access, public and private spaces. Careful planning must also be implemented before construction begins to manage the impact of the site disturbance. The GO Home’s location was chosen based on conserving as much of the trees and meadow as possible, while also creating sufficient privacy for the house from the road.

Most rural and suburban homes orient the primary façade, including the main entry and windows, towards the road. While we did orient the protorype’s front door to the road for clarity for arriving visitors, we then rotated the majority of the glazing towards the south for optimal solar gain and privacy. Articulating the difference between solar and social orientation in the siting of a house requires more consideration and critical thinking, but certainly is beneficial for both.

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According to Ann Kearsley, Landscape Architect of Ann Kearsley Design, paying attention to the movement of the site (earth, water, air and sun) is key to limiting the disturbance of the landscape. Ann has been working collaboratively with G•O Logic to create a low impact construction site for the prototype house (see previous blog).

During the site planning and design process we took the following elements into consideration: water drainage, existing vegetation and sunlight. Planning for, and managing storm water runoff during and after construction is critical because the building will disturb the natural flow of water of an existing site. We tried to set the building elevation in the site to minimize excavation or filling. Because the site is sloped we needed to create a level area for the building and manage the resulting water runoff. To divert the run off away from the building we created vegetated bio swales that will become a distinct landscape element. Improper management of water drainage will result in soil erosion, which becomes a problem by creating unstable soil conditions for vegetation.

Top soil is also affected by site construction. Standard building practices, such as driving trucks all over the site and stockpiling topsoil in large piles, can destroy the top soil’s organic structure. Limiting the area of construction in the planning process on the site plan and during construction with fencing is important in order to minimize the overall impact on the landscape. The top soil excavated from the house site and driveway was stockpiled in shallow piles, mulched with hat and seeded to prevent erosion. Once construction around the house is complete, the stockpiled topsoil will be re-graded around the house to complete the landscape.

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Sustainable Sites Approach: Ann Kearsley Design

Tuesday, July 14th, 2009

AKD GO Home Site Plan 11.18.09

Pay attention. Start by noticing. Start with the land, with the field; start with that drift of milkweed, monarch magnet; with the flattened grass ovals of deer beds; start with the lupine near the ledge outcrop, protected from the bush hog blades by the jagged stone or maybe by the mower’s annual remembering, his choosing to turn wide around that small blue stand of Maine wildflower; start with those two sentinel apple trees, remnant of an orchard row, traces of other, earlier, hands on the land. Or start with the collapsing stonewalls bounding the field,
the ashes and maples and shadblow growing up through those tumbled lines, widening trunks dismantling over generations the carefully stacked harvest of winter frosts and spring plows. Evidence of habitation: who’s been here, who’s here now. Evidence of labor: landform expressing technology and intention and, when the work stops, wildlife’s swift re-occupation.

Move. Follow the paths that rainwater takes through the field towards the woods at the bottom of the slope. Feel the topography in your gait, long strides through tall grass on shallow slopes, small stumbles when knees soften in low spots, eddies of sedges marking depressions and swales where water is held longer, draining slowly into the soil. At the edge of the woods turn around, look back up the slope to where you started, eyes now level with the road, body a register of
distance and the change in elevation. Circle the field, inscribing a path, feeling for that restful place between edge and open where structure can engage transition.

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We’re introducing a building into the continuum of occupation and life on the site and, in doing so, will redirect the course of habitation and the character of this place. Our choices about where to build and how to build will determine whether any of the present inhabitants continue to make this landscape their home and whether occasional visitors might be tempted to settle down. And, as every property is part of a much larger, regional ecological matrix, our actions will also precipitate changes in the surrounding area, the impact of our presence rippling out beyond the site boundary.

Our first engagement with the site’s ecology, that complex web of relationships among plants, animals, soil, sun and water, will cause disruption and dislocation. Construction takes up space, casting shadows, interrupting water flow, and obstructing movement. We plan the construction staging to reduce this disruption, limiting crews and equipment to a small area immediately around the structure. Topsoil is removed from the building site, stockpiled in low berms, overseeded with a cover crop and kept healthy until we can re-place it around the house next spring. The site drainage pattern is reconfigured so water moves around the building and is reconnected with the existing flow in undisturbed areas downslope. We work to anticipate the site’s response to disturbance, integrating new development with existing conditions and creating opportunities to enrich and expand the ecological health and function of this landscape.

Ann Kearsley RLA, MLAUD
www.annkearsley.com

Small Businesses Need a Stronger Energy Bill

Tuesday, July 7th, 2009

By Matthew O’Malia
Special to Roll Call
June 22, 2009, 5:43 p.m.

Read the Article at the Roll Call

(Please note that the first time you click this link you are directed to an advertisement. Click the “Close” button on the top right, and you’ll be redirected to the homepage of the Roll Call. You can click the ‘back’ button on your browser to get back the article. Since there’s no way to get around this, we’ve included the full text of the editorial below.)

I am a small-business owner and partner in G•O Logic LLC of Belfast, Maine, a design and building company building the next generation of sustainable, energy-efficient homes. So I understand first-hand the importance of investing in clean energy and the importance of Congress strengthening the Clean Energy and Security Act. If we invest in a clean energy economy now, we’ll create millions of jobs and set our country on a track to compete in a 21st century economy. Not only will my small business and thousands of others like mine be able to expand, but all of the local businesses we rely on for manufacturing, shipping, storage and many other tasks will benefit as well.

Buildings consume 40 percent of the energy produced in the United States, more energy than all of the cars on the roads today. And while automobile fuel efficiency is seriously debated as a path to save energy and money, building energy performance has not received as much scrutiny, even though we have the tools and technology to create super-efficient buildings today. A strong renewable electricity standard will mean these tools get used and these jobs created to make our buildings more efficient and begin to build the foundation of an American new energy economy.

G•O Logic has developed home designs that reduce energy consumption by 90 percent for space heating and 80 percent overall. These houses look and feel like custom-designed, conventional homes and are built for average construction costs. The energy efficiency comes from cost-effective design improvements — thicker walls with a lot more insulation, better passive-solar utilization, and an air-tight envelope coupled with a heat-recovery ventilation system. In simple terms, a 90 percent more energy-efficient home saves an enormous amount of money and energy — around $90,000 in heating costs, 22,000 gallons of heating oil, and 285 tons of CO2 over the term of a 30-year mortgage.

A stronger renewable energy standard in the energy bill would provide small businesses, like mine, with an important opportunity to provide quality, energy-efficient housing that people can afford to build and heat and cool. And this opportunity would not just benefit small businesses. It would also create an entirely new market for green jobs that are good-paying, skilled and valuable to the economy. And these are jobs that can never be shipped overseas.

In fact, study after study has shown that investing in clean energy creates jobs, and at a far faster rate than investments in dirty energy sources like oil and coal.

Researchers at the University of Massachusetts found that investments in clean energy produce two to three times as many jobs as investments in dirty energy. The Department of Energy and the National Renewable Energy Laboratory have issued similar findings.

Why settle for half as many jobs when we could have double or even triple?

And don’t forget that creating more energy-efficient homes and businesses will jump-start the local economies in a multitude of ways. Once homes and businesses stop wasting energy, it means more money in people’s pockets. The Department of Energy’s home weatherization program cuts energy costs by an average of 30 percent per home. Those savings will spur consumer spending — helping to create even more jobs.

A strong American Clean Energy and Security Act can open new doors to future green jobs, a green economy and energy security. G•O Logic, among other innovative small businesses, is ready to help lead the way, with the skills and vision necessary to implement this ambitious plan. But we need the help of elected officials. I urge Congress to act now to create a stronger energy bill that will provide the support needed for a strong green economy and a brighter future.

Matthew O’Malia is principal of G•O Logic LLC, a design and building company in Belfast, Maine.

G•O Logic Editorial in Roll Call

Thursday, July 2nd, 2009

Matthew O’Malia discusses the importance of the current energy policy being debated by the Senate, and how change is necessary to realize the benefits of a green economy and green future!

“Buildings consume 40 percent of the energy produced in the United States, more energy than all of the cars on the roads today. And while automobile fuel efficiency is seriously debated as a path to save energy and money, building energy performance has not received as much scrutiny, even though we have the tools and technology to create super-efficient buildings today. A strong renewable electricity standard will mean these tools get used and these jobs created to make our buildings more efficient and begin to build the foundation of an American new energy economy.”

Read the whole editorial here: http://www.rollcall.com/news/36132-1.html

Prototype

Wednesday, July 1st, 2009

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G•O Logic is currently building its 1500 Contemporary model home on a 4-acre site in Belfast, Maine, which will be completed in January.

This house is the result of extensive design and engineering work to create a home that has the highest energy performance at an affordable cost. We have worked with engineering consultants in both the US and Europe to develop our designs, incorporating the best and most up-to-date engineering into our prototype’s construction and components. G•O Logic has traveled to Germany to source the highest performing building components to incorporate into our buildings. We believe that to build for the future, we need to utilize the very best technology today.
To certify the high level of design and performance of our prototype, we are also in the process of pursuing a Passive House certificate and a LEED certification.
Once completed, the house will be rented to a local family and open for tours on a limited basis. G•O Logic will monitor the performance of the building over 2 years to verify the energy use targets we have set. Stay tuned for photos and updates on the progress of the construction.