When an architect is a sub to a contractor leading a Design-Build team, the architect’s primary allegiance is typically to the contractor and not to the owner. The Design-Build contractor is likely to control the architect’s scope of services and…
Blog Archives
SIP Building Performance Depends on Effective Moisture Management
Structural Insulated Panels (SIP) have enjoyed growing popularity as interest in building energy conservation has increased. With its large, prefabricated, factory insulated panels, SIP construction offers nearly continuous insulation, fewer joints than conventional frame construction with stud-cavity insulation, and possibly…
QA and QC inform each other
Until I recently studied for the CDT exam*, I had considered QA (Quality Assurance) and QC (Quality Control) as synonymous – the same thing with different names. They are different, but they are closely related. Considering construction, QA establishes the…
Using Continuous Rigid Insulation to Solve a Roof Ice Problem
This Vermont church roof (top photo) suffered from ice build-up, leaks, and giant icicles below the eaves of the relatively new sanctuary roof. The original intent for construction of the sanctuary roof was a ‘dropped’ cathedral ceiling with fiberglass…
Who Should Answer This Question?
Architects are faced with questions all the time. Clients ask questions. Consultants ask questions. Contractors and subcontractors ask questions. The list goes on. Architects generally want to be helpful, they like to be asked questions, and they want to have…
Steep Roof Design Basics for Snow Country
Leaks from ponds created by ice dams can frequently be traced to roof design. Roof designs that funnel snow to narrow spaces and narrow eaves are likely to promote the development of ice dams and resulting roof leaks. Roof designs…
Interdisciplinary Coordination of Construction Documents
Gaps between design disciplines are a common cause of construction change orders. In some cases, the consulting disciplines’ standard practices may generate a gap. For example, the electrical engineer may establish an electrical scope of work that “stops” 10 feet…
Bidders Trust Bid Documents for Take-off
Estimating quantities from a set of plans prepared by another architect reminds me that bidders are likely to rely on the accuracy of the drawings when preparing a take-off for a bid. If the drawings are inconsistent or include discrepancies,…
Noisy Lessons
Reading an article on acoustics in the July 2012 issue of The Construction Specifier reminded me of a number of useful lessons learned in the process of designing and administering public school construction projects. Here is one: Basic Acoustical Treatment…
Getting up to speed with Air Sealing Details
Article 103 of the 2009 International Energy Conservation Code (IECC) requires that construction documents include air sealing details. Detailing the building envelope air barrier is a relatively recent challenge for architects, but it is a necessary task for communicating these…
