Structural engineer Cary Kopczynski once penned a prediction: “There may come a day in the not-too-distant future when concrete building structures will commonly be reinforced with a combination of steel fibers and steel reinforcing bar.
Good performance of the cross-laminated timber panels, made by the first certified CLT supplier in the U.S., is expected to have a positive impact on domestic production.
Having recently validated assumptions about floor-system capacities in its timber-and-concrete structural model for a 42-story residential building, architect-engineer Skidmore, Owings & Merrill is planning additional load tests, followed by fire tests, to nail down the viability of mass-timber-and-concrete high-rises.
Watershed Management Group, a Tucson-based nonprofit, initiated a research project with the ultimate goal of convincing Arizona building officials to accept non-code-compliant composting toilets—critical to potable water conservation in buildings—as an alternative to an onsite wastewater system.
Code Requirements for Assessment, Repair and Rehabilitation of Existing Concrete Structures addresses spot fixes that might be needed after a structure has been in service.
At the end of the first day Tony Gerde, then 22, worked as a rodbuster—carrying rebar like a pack animal—he went home a wreck—with bruised shoulders, raw skin and his body aching from head to toe.