Earth Pledge Green Roofs Initiative
Supporting the creation of green roofs upon New York City's flat rooftops. Includes rationale, research, projects, workshops, and resources.
http://www.earthpledge.org/GreenRoof.html

ArchEd
A Harris-Matrix program which runs with Win2000, XP or WinNT.
http://www.ads.tuwien.ac.at/arched/

Spartacus: George Stephenson
Biography of the railroad pioneer whose work on railways included a nine-arched viaduct across the Sankey Valley.
http://www.spartacus.schoolnet.co.uk/RAstephensonG.htm

Historic Slate Roofs
The repair, replacement, and maintenance of historic slate roofs by Jeffrey S.Levine. Includes a history of slate use, further reading and repair and replacement guideline .
http://www.neslate.com/Levine.html

New Millennium Building Systems, LLC
Pusse opp badet tips og interiør design veiledning
http://www.joist-deck.com

Sprung Instant Structures
Manufacturer stressed membrane structures consisting of a series of aluminum arched ribs integrally connected by modular architectural membrane panels.
http://www.sprung.com/

Vulcraft
Nucor Vulcraft Group engineers and fabricates K-series, KCS-series, LH-series, DLH-series and SLH-series joists as well as joist girders, including special profiles such as single and double pitched, bowstring, arched chords, and scissor.
http://www.vulcraft.com/

Proof Industries
Preassembled Bay Window Roofs & Bow Window Roofs... - The Proof is in the Roof
http://www.proofroof.com/

ProfileVent
Ridge vent for commercial and residential metal roofs.
http://www.profilevent.com

GreenProducts.net
The biobased revolution has dramatically affected commercial, industrial and government-funded businesses. Biobased products come from agricultural materials like corn, and they are providing environmentally minded individuals with effective alternatives to petroleum-derived products. In fact, the term biobased may soon be as common as
http://www.greenproducts.net/