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The dowels need to be smooth, round, epoxy and made of bond breaker coated steel conforming to requirements. The bond breaker is to be applied on all surfaces of the dowel bar. The expansion caps belong at each end of the dowel bar and the dowel bar support chairs are used to firmly hold the dowels centered in the slots during backfill operations.
Dowel bar retrofit (DBR) is a process that re-establishes load transfer capability on joints and cracks by installing epoxy-coated, round steel dowels into existing concrete pavement across transverse joints and/or cracks. Slots are cut using diamond-tipped saw blades; the existing concrete is removed and the dowels are placed in the slots ...
Rarely a post may have an "integral bracket" [14] which is a mid-post flair to carry a lower timber. The portion of a flared post extending upward at the top is called the upstand [15] and one of the top tenons is called a teazle (teasel) tenon. Jetty – A post supporting a jetty; Door –: A post framing a doorway.
A dowel reinforced butt joint. The dowel reinforced butt joint or simply dowel joint has been a very common method of reinforcing butt joints in furniture for years. They are common in both frame and carcase construction. Dowel joints are popular in chairs, cabinets, panels and tabletops. They are also used to assist with alignment during glue up.
A dowel plate. The traditional tool for making dowels is a dowel plate, an iron (or better, hardened tool steel) plate with a hole having the size of the desired dowel.To make a dowel, a piece of wood is split or whittled to a size slightly bigger than desired and then driven through the hole in the dowel plate.
Control joints must have adequate depth and not exceed maximum spacing for them to be effective. Typical specifications for a four-inch-thick slab are: [8] 25% depth of material; spacing at 24 × to 36 × of slab depth (some specification call for a maximum of 30 ×) special care for inside corners
Glulam brace with plates used for connections Glulam frame of a roof structure. Glued laminated timber, commonly referred to as glulam, is a type of structural engineered wood product constituted by layers of dimensional lumber bonded together with durable, moisture-resistant structural adhesives so that all of the grain runs parallel to the longitudinal axis.
The traditional slab formwork technique consists of supports out of lumber or young tree trunks, that support rows of stringers assembled roughly 3 to 6 feet or 1 to 2 metres apart, depending on thickness of slab. Between these stringers, joists are positioned roughly 12 inches (30 cm) apart, upon which boards or plywood are placed. The ...