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Market realities confine proposed timber tower to the drawing board

Sources: Softwood Lumber Board, Washington, D.C.; CP staff

Champions of a 12-story structure built with cross laminated timber assemblies have placed their project on hold indefinitely. A mixed-use residential and commercial design, the Framework tower was pegged for the Portland, Ore., Pearl District; billed as the first U.S. timber high rise; and, secured state and city building permits in 2017.  

Read more: Market realities confine proposed timber tower to the drawing board

Vulcan, Martin Marietta, Oldcastle top USGS crushed stone ranking

Sources: U.S. Geological Survey; Rock Products

The top 20 crushed stone producers accounted for 743 million metric tons, or 55 percent of the 2016 U.S. output, according to a report USGS Commodity Specialist Jason Willet prepared from the most current shipment data available. He also finds that the top 100 operators’ limestone and granite production totaled 1.02 billion mt, or 75 percent of industry shipments, in 2016. The 294 leading companies in his survey, representing 20 percent of operators tracked, were responsible for 1.21 billion mt or 89 percent of output. 

Read more: Vulcan, Martin Marietta, Oldcastle top USGS crushed stone ranking

Trump initiative supports training of 500,000 construction workers

Source: Associated Builders & Contractors, Washington, D.C.

Associated Builders and Contractors is among 20-plus charter signatories to “Pledge to America’s Workers,” supporting a White House initiative, National Council for the American Worker, that President Donald Trump created by Executive Order. The Council is charged with developing a strategy for training and retraining workers across high demand industries, and will convene public, private, education, labor, and not-for-profit sector representatives.

Read more: Trump initiative supports training of 500,000 construction workers

ACI launches decorative flatwork certifications

Sources: American Concrete Institute, Farmington Hills, Mich.; CP staff

The newest ACI certification program offerings are Decorative Concrete Flatwork Finisher and Decorative Concrete Flatwork Associate. Each requires candidates to complete a written exam and maintain appropriate ACI Concrete Flatwork Finisher or Technician certification. Finisher candidates also need 1,500 hours of work experience.

Read more: ACI launches decorative flatwork certifications

ASTM C15 pens standard for alternative material-molded masonry units

Sources: ASTM International, West Conshohocken, Pa.; CP staff

ASTM Committee C15 on Manufactured Masonry Units will soon publish C1825, providing guidelines for block and brick made from materials not currently addressed by existing Society standards. The new standard responds to unit masonry producers’ move to look beyond concrete, clay, shale, sand-lime and calcium silicates for alternative materials.

Read more: ASTM C15 pens standard for alternative material-molded masonry units