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FYI, and so you can put a name on it, the more modern examples above are called castellated beams.Typically the holes are in an hexagonal shape, though obviously round is common, as well. Steel is sold by weight per foot and most of the bearing capacity of a steel beam is found in the depth of its section, so the castellated beam is a common solution for long free spans. It's also convenient for passing duct work, plumbing, and electrical conduit through.There's more about castellated beams than you probably ever wanted to know!The beautiful roof structure from the Temperate House is a different animal-some sort of hybrid beam/truss structure.24 Jun 2014 10:03 a.m. PST.
Astm c-881 free download pc. Ma t e rials (ASTM) published a standard specification in. This document, ASTM C 881-78, Ep ox y- re s i n - b a s e. Bonding Systems for Co. 63 products - Find ASTM C881 products and abstract using the BuildSite database. Get the right product for the spec. Epoxy Resin Systems for. Civil Engineering Applications. “Standard Specification for Epoxy-Resin Based Bonding.