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BT - Building Construction - Wood
 

BT - Building Construction - Wood

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    BT - Building Construction - Wood BT - Building Construction - Wood Presentation Transcript

    • Wood ConstructionClass Instructor :RINO D.A. FERNANDEZ
    • WOOD CONSTRUCTION:
    • WOOD CONSTRUCTION:
    • WOOD CONSTRUCTION:GLUE-LAMINATED (GLULAM)- a modified solid wood in which the weakeninginfluence of growth-related defects has been largelycancelled out.- composed of at least three sheets of softwood timberglued under pressure, parallel lo the grain, to createstable building elements
    • WOOD CONSTRUCTION: TYPES OF GLUE: Urea-formaldehyde resin (UF) Melamine modified urea-formaldehyde resin (MUF) Phenol resorcinol resin (PRF) Polyurethane (PU)
    • WOOD CONSTRUCTION:GLUED LAMINATED BEAMS- are solid, flat, building elements. They arecomposed of layers of boards or planks connected toeach other with nails or hardwood drift bolts.
    • WOOD CONSTRUCTION:LAMINATED VENEER LUMBER (LVL)- an engineered timber composite manufactured bylaminating wood veneers using exterior-typeadhesives.
    • WOOD CONSTRUCTION:
    • WOOD CONSTRUCTION: LAMINATED STRAND LUMBER (LSL) - is produced from strands of wood, up to 300 mm in length and 30 mm in width, or species combinations blended with a polyurethane-based adhesive.
    • WOOD CONSTRUCTION:PARALLEL STRAND LUMBER (PSL)The manufacturing process involves peeling small-diameter logs into veneer sheets. The veneers are thendried to a moisture content of 2–3% and then cut intothin long strands oriented parallel to one another
    • WOOD CONSTRUCTION:ORIENTED STRAND BOARD (OSB)an engineered structural board manufactured fromthin wood strands, flakes or wafers sliced from small-diameter round timber logs and bonded with anexterior type adhesive (comprising 95% wood, 5%resin and wax) under heat and pressure
    • WOOD CONSTRUCTION:THIN WEBBED JOISTS (I-JOISTS)I-joists are structurally engineered timber joistscomprising flanges made from solid timber or LVLand a web made from OSB, plywood or particleboard.The flanges and web are bonded together to form anI-section member, a structurally efficient alterative toconventional solid timber
    • WOOD CONSTRUCTION:BOARDSUnplaned softwood boards and planks are parallelsquare-edged materials.Planed softwood boards and planks are planed smoothon one side and processed to an even thickness on theback, The edges are neither planed nor profiled.
    • WOOD CONSTRUCTION:BOARDSMatched boards are boards with grooves and planedtongues.
    • WOOD CONSTRUCTION:JOINTS AND FASTENERS
    • WOOD CONSTRUCTION:
    • WOOD CONSTRUCTION:Rectangular Wooden Dowelsused as joints & fasteners subject to shearingstress
    • WOOD CONSTRUCTION:Rectangular Steel AnchorInserted into recesses across the grain, held withsplices & secured with locking bolts
    • WOOD CONSTRUCTION:Specially Designed Anchors
    • WOOD CONSTRUCTION:BoltsBolts are pin-shaped fasteners made of roundsteel with heads, threads and nuts; they aredriven into drilled holes with a maximum diameter1 mm greater than their own, with washers oneach side
    • WOOD CONSTRUCTION:Nail PlatesThese are 1-2 mm thick steel sheets with nail orclaw-shapes punched and bent out on one or bothsides.
    • WOOD CONSTRUCTION:Angle Connectors- a perforated plate angle or from punched sheetused for connecting and fastening
    • WOOD CONSTRUCTION:
    • WOOD CONSTRUCTION:Rafter-to-purlin Connectors/purlin Anchors- use for connecting crossing beams.
    • WOOD CONSTRUCTION:
    • WOOD CONSTRUCTION:Track anchors/profile anchors/wood connectionanchors- use to fasten wooden elements into anchortracks or with steel profiles
    • WOOD CONSTRUCTION:Pillar BasesPillar bases (pillar bracket, post holder) serve toconnect the pillar with the foundation or the ceiling.The connection is made by fixing base plates &dowels onto the concrete or by using ribbed rockdowels & grouting in the recesses in the concrete.
    • WOOD CONSTRUCTION: