Masonry Magazine October 1987 Page. 19
Using my suggestions previously mentioned, cost items at the job site begin with the unloading of the crates and ends with the disposing of these empty crates and the patching of chipped stone. Crew sizes vary with the size of the stone and location of the building. Grouping stone of approximate same size can aid in pricing as you can set a stone containing ten square feet in the same time that it takes to set a stone of six square feet. Anchor manufacturers can assist you in the selection of anchoring systems if this is not already spelled out in the specifications. What you exclude is as important as what you include, i.e. mockup sample, wall testing, protection of finished work and other items. Although yours will be a lump sum contract, I recommend pricing by the piece of material and using the number of square feet as a check.
Types of Wall Systems
Although granite and marble flooring are laid in grout beds, there are three major types of wall systems used to set these stone walls:
(A) GRANITE FACED CONCRETE PANELS. You would have this portion of the granite material delivered to the precasters yard with them pouring the panel and delivering the stone faced panel to the jobsite. Projects using this system usually contain areas that require hand setting also.
(B) GRANITE FACED STEEL TRUSS PANELS. The material is delivered to your yard. You would fabricate the steel truss or sub it out. With either method, the granite is attached to the truss in the fabrication operation. Then, the panel is trucked to the jobsite and erected. The material will be attached to the steel truss with either aluminum or stainless steel anchors. This system will also involve some hand set material.
(C) HAND SET MATERIALS. This system, or parts of it, are used in most projects. This is the setting of this material by hand with allied equipment, one piece of stone at a time. The size of each crew can vary from two to five men, depending on the size of the material. When setting stone in this manner, you can anchor it to the building with either stainless steel, copper wire, or aluminum. Each anchoring system has advantages and disadvantages. The architect and the use or location of the stone to be set will usually dictate which anchoring system to be used.
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Load Bearing Anchor
Five Post Oak Park, Houston, Texas. Architects were Morris-Aubrey, Houston, TX.
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