Landscape Contractor / Design Build Maintain

NOV 2017

LC/DBM provides landscape contractors with Educational, Imaginative and Practical information about their business, their employees, their machines and their projects.

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Page 31 of 55

The National Precast Concrete Association reports that recent large- scale construc - tion projects that successfully used precast concrete as a material of choice shows that "its flexibility, durabili - ty and ease of installation," benefit those types of applications. The projects in question were the replacement of a pier in Plymouth, Mass., that used six 60-foot-by-2-foot-by-3-foot solid precast beams; and a prototype of a modular structure that can be used to retrofit water control systems that used six precast concrete 8-foot-by-8-foot-by-8-foot blocks interconnect - ed with each other. 32 LC DBM Using Recycled Concrete Aggregate According to the paper Evaluation of Recycled Aggregates Test Section Performance, published by the Minnesota Department of Transportation, integrating recycled concrete as aggregate in concrete mixes destined for pavement ap - plications not only saves money and promotes sustainability, it produces acceptable results – 27 years of service before re - habilitation as opposed to 32 years for traditional mixes. The paper also includes specification recommendations and design guidelines for these recycled concrete aggregate (RCA) mixes. - ports/2017/201706.pdf Evaluating Permeable Pavement An ongoing study by the USGS is assessing the effectiveness of various types of permeable pavements – pavers, concrete and asphalt – at reducing the amount of runoff volume and pollutants. The expected outcomes include the quantifying of those amounts, improved design capabilities, and information about maintenance and upkeep of per - meable pavements. Graphs showing the last seven days of continuous measure - ments are available at http://tinyurl. com/y944yr2x . New Permeable Pavement Resources Available from ICPI The Interlocking Concrete Pavement Institute recently published a case study on the largest permeable interlocking concrete pavement project in America, the Southeast Atlanta Green Infrastructure Initiative, which led to the installation of 1.5 million concrete pavers on four miles of streets. The eight-page, full-color document can be purchased at the ICPI online store. Also, the organization is offering its members a new package of safety meeting templates. Precast Concrete Showing Up at Sizeable Projects Putting Drones to Work at Construction Sites Scott Widmann, a project manager for DPR Construction, states that a very beneficial use of drones on construction projects is for site logistics – "coordinating where and how materials should be delivered and stored, where heavy equip - ment should be moved, and when and where work should be performed." His company employs drone-captured images to help plot out these logistics as well as track the progress of a project. uav-data-ready-to-take-flight/ ACI Documents Easier to Acquire The American Concrete Institute has teamed up with various digital content dis - tributors to allow the organi- zation's collection of codes, specifications, guides, reports, and technotes to be accessed by interested individuals at one or more sites at the same time. The content can also be bundled with information from other standards develop - ing organizations. publications/multiuserop - tions.aspx

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