The article "Controversial Developments Withstand Wildfires"
(In the News, 12/07) reports on the survival of homes built
with "boxed eaves with screened vents (to prevent windblown
embers)." Where can I get more information about this detail
and others mentioned in the article?
There is an excellent collection of construction details
— as well as other information on fire-resistive
construction — at
Scroll down to "October Wildfire Rebuilding — General
Information" and click on "Fire Resistive Eave
Construction." — The Editors
Drywall Butt Joints and
Greg DiBernardo is certainly not the only contractor to ignore
section R702.3.5 of the IRC ("Taming Butt Joints," 12/07), but
if everybody feels free to ignore it, why hasn't that section
of the code been removed?
In this case, there is more than a little room for flexibility
on the part of a building inspector in interpreting the code.
IRC R702.3.5 states that "all edges and ends of gypsum board
shall occur on the framing members, except those edges and ends
that are perpendicular to the framing members." IBC 2508.3 has
the same language, but adds a reference to ASTM C840 in Table
2508.1, which lists applicable standards for the installation
of gypsum board. ASTM C840 (Section 8.2), in turn, states that
ends and edges "shall occur over framing members or other solid
backing" — which could certainly include an OSB backer,
as shown in the article, as long as the building inspector
agrees. — The Editors
Making Arched Panel
Keep up the good work, especially the articles that allow the
readership to expand their skill sets. Gary Striegler's article
"Building an Arched Passageway" (12/07) lacked only one thing:
pictures of the arched panel molding being made. Other than
that, way to go!
Thanks for the compliment; here are some additional photos
that should clarify the author's process. — The
The blanks for the panel molding are laminated from the
same forms as the matching arch, ripped to width on the table
saw (A), and cleaned up with planing (B) and sanding. After
adding a support block beneath the router base for stability
(C), the author takes several passes to get a smooth finish
(D), then rips the molding to final width (E). Working from the
top of the arch, he carefully marks and cuts each miter (F),
then glues and pins the molding in place. He works down the
arch, adding cross rails as he goes (G).