Are you a subscriber but don’t have an online account?

Register for full online access.

 
 
 
 

More stories about Engineering

  • Vertical I-Joists?

    Q: When building a super-insulated house, one of the ways to increase insulation levels in the wall assembly is to increase the thickness of the wall. But instead of using double-wall framing, would it be okay to frame walls with I-joists?

  • Framing Red Flags

    Catch these common framing and sheathing errors and you’ll prevent inspection failures and customer callbacks.

  • Framing Flaws

    These common errors could lead to expensive callbacks later on.

  • Snow Loads on Roofs

    Q: I've always thought that building codes leave a pretty generous margin for error when specifying allowances for snow loads, but a series of recent storms and a lot of drifting have resulted in some collapsed roofs in my area. I've seen some roofs with large loads on one side and virtually none...

  • "Bye Bye Incandescent?" Lecture Series, Part 5: Compact Fluorescents, Mercury, and Writing a Non-toxic Lighting Specification

    On Feb. 13, 2008, the New York chapter of the Illuminating Engineering Society held the fifth installment of its "Bye Bye Incandescent?" lecture series. The focus of this segment included critical information and discussion regarding the impact of mercury sources in our landfills, the challenges of...

  • The University of Ontario Institute of Technology

    The University of Ontario Institute of Technology (UOIT) is so young that the number of its alumni just recently surpassed the size of its staff. Located in Oshawa, Ontario—less than an hour's drive northeast of Toronto—the new campus opened its doors in 2003.

  • How to Build a Concrete Canoe

    If you don't know much about boatbuilding, start by welding rebar together to frame the gunwales and keel. Then form the hull with layers of chicken wire, and trowel a stiff 1/2-inch-thick mortar mix onto the mesh.

  • Osram Awarded Primetime Emmy Engineering Award

    Osram Sylvania has received the Primetime Emmy Engineering Award from The Academy of Television Arts & Sciences in recognition of outstanding engineering development for its HMI metal halide lamp technology. Osram's HMI lamps first debuted in a television broadcast in 1969 and have since become a...

  • Fixing Cracks in Engineered Flooring

    Q: Last spring, I installed floating engineered flooring over the original vinyl-covered concrete-slab floor of an old New York City apartment. Even though I followed the manufacturer's installation guidelines, the 8-inch-wide planks began to cup, and cracks measuring 1/32 to 1/16 inch opened up...

  • Solving the Uplift Puzzle

    Where the codes once concentrated mostly on verifying that buildings could handle gravity loads, now coastal homes must also resolve the complicated load effects associated with high winds: uplift, shear (or "racking"), sliding, and overturning. Ted Cushman takes a closer look at one kind of...