Emeralds are gem-quality specimens of the beryl mineral family with a rich, distinctly green color. They are found in igneous, metamorphic, and sedimentary rocks in a small number of locations worldwide. For over 5000 years, emeralds have been one of the most desirable and valuable colored gemstones.
For example, the Agway Elevator was built on a concrete mat 3 feet thick which in turn rests on a natural foundation of stiff clay. But whatever the foundation for the elevator was, be it wood pilings or concrete slabs, construction of the elevator itself could begin once the base was completed.
METAL BAR GRATINGS. Embed frames cast into concrete floors and substructures serve a multitude of purposes that extend the effective life of your completed construction project. Frames form a rigid shield for concrete lead edges and perimeters which are subject to cracking and chipping when left unprotected. During construction, these rigid (1/4 minimum thickness) frames expedite forming and provide a welded structure that assures accuracy in the concrete pour.