Sources: National Concrete Masonry Association, Herdon, Va.; CP staff
A new provision allowing a single web of ¾-in. minimum thickness invites an array of alternatives to the three-web configuration of 8x8x16 block meeting requirements of ASTM C90 Standard Specification for Loadbearing Concrete Masonry Units.
Sources: Martin Marietta Materials, Raleigh, N.C.; CP staff
By Don Marsh
A stock-for-stock takeover Martin Marietta launched December 12 for Vulcan Materials Co. would create a heavy building materials powerhouse with aggregate shipments (2010 combined: 278 million tons) more than double those of its closest peers, Oldcastle Materials (118 million tons) and Lehigh Hanson Inc. (116 million tons), but limited additional scale in ready mixed concrete and asphalt production.
Sources: Concrete Industry Management, Silver Spring, Md.; CP staff
The signature item for the seventh annual CIM auction at World of Concrete in Las Vegas is a Mack Truck model GU 813 equipped with a McNeilus 11-cu.-yd. concrete mixer donated by Mack Trucks, Inc. and McNeilus Co., a division of Oshkosh Truck.