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Multi-screen casing completion: the MLS is installed inside of a multi-screened steel or PVC well. Each well screen segment has a sand or gravel pack between it and the borehole wall, and is thus isolated from monitoring zones above and below by a grout or bentonite seal. The MLS is then constructed inside of the multi-screened well.
Successful installation of nested wells has been reported by the U.S. Geological Survey [6] in deep (several hundreds to over one thousand feet), large diameter boreholes (≥12 in), with multiple casings (monitoring zones), resulting in seals that are several tens to hundreds of feet thick.
Beam and block is a construction method to support flooring, especially for ground floors as well as multi story buildings. [1] It is made of cast concrete, one piece of which is a prestressed concrete beam, which can be an inverted T-shaped beam, or lintel, the other piece being a simple rectangular block. [1]
A bridge management system (BMS) is a set of methodologies and procedures for managing information about bridges. Such system is capable of document and process data along the entire life cycle of the structure steps: project design, construction, monitoring, maintenance and end of operation. [1] [2]
From the bottom of the box cut, the shaft collar is constructed bottom up in a planned series of concrete pours. Galloway (Sinking Stage) Construction & Installation. The Galloway (also known as a Sinking Stage or Scaffold) is a multi-level working platform, suspended in the shaft from winches located on the surface. The Galloway allows sinkers ...
The WELL Core is for the building that provide tenant occupation more than 75%, and not needed to achieve minimum points from every subjects. [3] The WELL Silver, Gold, and Platinum level must achieve at least 1, 2, and 3 points per subject, but the WELL Bronze has no minimum points' rule. For WELL core, there are no minimum point. [3]