Using shear transfer at engineered wood floors

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Engineered wood products are specified for a wide range of light-frame floor assemblies in light commercial and multi-family construction. I-joists, glued-laminated timber (glulam), rim board, laminated veneer lumber (LVL), laminated strand lumber (LSL), and oriented strand lumber (OSL) are popular due to their availability, precision, strength, and consistent quality.

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Dry concrete for moisture-sensitive floorcoverings

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There are two major sources of moisture in fresh concrete—excess mixing water left over after hydration of cement, along with natural groundwater beneath the concrete that moves to the surface by capillary action. This article describes how to control the sources of moisture in concrete slabs, minimize drying wait time to meet floorcovering manufacturer’s requirements, and determine when the slab meets those requirements.

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Solid timber, solid construction performance

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Solid timber construction, sometimes called ‘mass timber,’ is an emerging set of engineered wood products—massive planar or frame elements used for walls, floors, roofs, partitions, and core elements of a building. As shown in Figure 1, examples include both glued configurations liked glued-laminated timber (glulam), structural composite lumber (SCL), and cross-laminated timber (CLT), as well as non-glued products like dowel-laminated timber (DLT); nail-laminated timber (NLT), cross-nail-laminated timber (CNLT), and interlocking cross-laminated timber (ICLT).

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Specifying and achieving a level composite steel floor

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Composite steel assemblies are an efficient and popular structural option for floor construction. Figure 1 shows a typical assembly, consisting of a steel beam, metal deck, concrete slab, and shear connectors. The composite action between the steel beam and concrete provided by shear connectors creates the composite properties that make the system a very stiff and strong structural element.

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Fluid-applied thermal break coatings 101

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Architects designing with concrete balconies, cantilevered beams, roof penetrations, parapets, canopies, spandrel glass, and other ornamental architectural features are often limited in executing these design elements because they can create thermal bridges that extend beyond the insulation systems within the building envelope. This can cause condensation buildup in exterior systems and significant loss of energy performance for the whole building.

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