Water and Ice Dam Protection

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In addition to sealing air leaks, properly ventilating, and adequately insulating, the next time your roof is replaced you should consider installing water and ice dam protection along the eave as opposed to standard underlayment. Waterproof membranes are required for new construction by the 2009 International Residential Code (IRC) for asphalt shingle roof systems installed on homes that have a history of ice damming. Water and ice dam protection, or what is known by roofers as self-adhering, modified bitumen membrane, should be installed along the eave, atop the sheathing, extending at least 24” up the roof surface past the exterior wall line of the structure. It should also be installed inside valleys, along rake edges, and around flashed penetrations. Self-adhering, modified bitumen membrane is virtually impermeable, meaning water cannot pass through as a vapor or a liquid. It is important that any interior exhaust systems direct humid air to the exterior side of the roof and that all passive functions within an attic (ventilation and insulation) be proper and adequate. Should they be inadequate, or should air leakage occur, condensation could develop on the underside of the sheathing where water and ice dam protection is installed, and a different series of moisture problems would persist.

Air Leaks and Drafts

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Air leaks, or what are commonly known as drafts, occur at penetrable locations along a ceiling, beneath an attic. Common locations where air has the ability to leak into an attic include gaps between sheets of drywall; holes through which wiring runs; and around an attic hatch cover, a chimney, recessed lighting, or plumbing and mechanical vents. During the colder months, as heat rises through your home, these gaps will allow warm, humid air to circulate into the unconditioned attic. Locating and sealing these leaks will prevent a rise in the ambient temperature of your attic. Energy Star has developed a helpful guide, “A Do-it-Yourself Guide to Sealing and Insulating with Energy Star,” that provides information about what materials, precautions, and methods are necessary to seal attic air leaks.

The Critical Nature of Specifications When Bidding and Billing Contract Work

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Welcome to the On Site channel’s Construction Administration Column. Who should pay when work is done out of contract? Here David A. Todd, P.E., CPESC, gives his opinion.

Columnist David A. Todd, P.E., CPESC, has 37 years of experience in the architecture, engineering, and construction (AEC) industry and has performed much construction administration during that time. He will answer questions from our readers or from his own practice and will provide answers based on his understanding of the construction process and administration of the construction contract. The focus will be on the customary duties of the owner, contractor, and design professional as typically described in the contract documents.

House of the Month: Kent House by Gray Organschi Architecture

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A second home in Connecticut features an earthy materials palette that is detailed to look clean and contemporary.

Architect Alan Organschi’s experience as a cabinet maker and carpenter colors his firm’s thoughtfully detailed designs, which celebrate materiality. He believes this hands-on approach has set the ethos for his practice, Gray Organschi Architecture, which he founded with partner Lisa Gray in New Haven, Connecticut. The duo has designed a range of institutional, commercial, and residential projects, such as the Kent House. The design of this home exemplifies the unique balance the firm has achieved between functional and bespoke.

Framing Out Openings

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Contractor to Contractor: Follow professional interior contractor Robert Thimmes as he demonstrates how to frame-out openings. This third installment in a series of articles, Framing Walls With Light Gauge Metal Studs, visits the common practices for the framing of window and door openings.

When plumbing your openings and transferring your layout to the top track, turn your stud 90 degrees and attach your level high on the stud flange. Align the bottom edge of your stud with the edge of your opening, get the bubble "dead-on" and mark the top. Attaching your level to the flange rather than the webbing gives you a straighter surface that is less prone to bow, thus reducing variables and improving quality. Since one side of your opening has been plumbed, now just measure over the actual width of the opening and mark to establish the top of the other side.

An Interview with Stuart Silk Architects: What Makes for Commercial Design Success?

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What are some of the challenges – and pathways to success – when it comes to designing commercial architecture?

Stuart Silk Architects, based in Seattle, Washington, has more than 25 years of experience producing residential and commercial architecture. We spoke with John Adams, AIA, Principal of Stuart Silk Architects, to learn more about the latest challenges associated with commercial design. Although commercial design certainly has its nuances, his firm has successfully bridged residential and commercial design with a simple and unified insight: the client is always passionately and personally invested.

BIM for Small Businesses: The Benefits to You

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You’ve been reading about BIM. It’s being used by all of the big companies, and they’re talking about the benefits they’ve reaped.You know that BIM will be coming to your workplace soon, too, but how and from what direction? Are you just supposed to buy a software suite and hope for the best?

As it turns out, that’s an approach not even the product makers and suppliers would recommend. Building information modeling (BIM) is increasingly being described as a "disruptive" technology, even by its biggest promoters, for a reason.“Most people now understand that BIM is a process, not a product,” says Catherine Palmer, Sr. Industry Marketing Manager, AEC Solutions at Autodesk. “It’s a paradigm shift.” When asked how small to medium sized firms should handle the move to BIM, Jim Lynch, Vice President, Building Product Line Group at Autodesk recommends education as a first step. “Position yourself by beginning with the concept,” says Lynch, “Then embrace it.”

Sourcing Materials Locally

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No matter where you live, you are bound to find a unique building material that is made close to home.

Generally speaking, I’m not much of a shopper. Like a lot of guys, I like to dodge into a store, make a quick purchase, and then skedaddle. Things change a little when I head to my local home center or hardware store. More than once I’ve come home from what was supposed to be a short jaunt to pick up some lumber to hear my wife ask, “What took you so long?” OK, maybe I was perusing the new LED lighting or trying out a new multi-tool. I was definitely NOT shopping.

Alarcón New Cultural Centre

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As Madrid’s population continues to expand, its suburban areas are becoming more and more popular with those looking for affordable housing outside the city limits. However, these neighborhoods, while more economically practical, have long been plagued with the cookie cutter design all too often seen these days. Full of generic residential developments and chain restaurants, these areas have very little character and no touristic value; as such, they have been dealt a short hand in the design game.

Alaskan Housing Competition

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Jimmy Prokopeuff, like many Alaskans, needs to replace his outdated wood-frame home, which is ill suited to the rigors of Alaskan weather conditions. The Cascadia Green Building Council, in partnership with the Aleutian Housing Authority, plans to help.

The Living Aleutian Home Design Competition challenges architects and engineers to design a “creative, livable, affordable” three-bedroom, one-bath, single-family home. The home must be between 1,150 and 1,350 square feet and must have a construction budget of $400,000 or less. The challenge may sound simple enough to a seasoned architect or engineer, but there is a catch—the home must be environmentally sound and be able to withstand Alaska’s roughest conditions.

Timing Your Change Orders

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Welcome to the On Site channel’s Construction Administration Column. What should you do if a contractor fails to ask for a change order in a timely manner? Here David A. Todd, P.E., CPESC, gives his opinion.

Columnist David A. Todd, P.E., CPESC, has 37 years of experience in the architecture, engineering, and construction (AEC) industry and has performed much construction administration during that time. He will answer questions from our readers or from his own practice and will provide answers based on his understanding of the construction process and administration of the construction contract. The focus will be on the customary duties of the owner, contractor, and design professional as typically described in the contract documents.