Wood Construction Class Instructor : RINO D.A. FERNANDEZ
May 20, 2015
Wood Construction
Class Instructor :
RINO D.A. FERNANDEZ
WOOD CONSTRUCTION:
WOOD CONSTRUCTION:
WOOD CONSTRUCTION:
GLUE-LAMINATED (GLULAM)
- a modified solid wood in which the weakening influence of growth-related defects has been largely cancelled out.
- composed of at least three sheets of softwood timber glued under pressure, parallel lo the grain, to create stable building elements
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TYPES OF GLUE:
Urea-formaldehyde resin (UF)
Melamine modified urea-formaldehyderesin (MUF)
Phenol resorcinol resin (PRF)
Polyurethane (PU)
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GLUED LAMINATED BEAMS
- are solid, flat, building elements. They are composed of layers of boards or planks connected to each other with nails or hardwood drift bolts.
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LAMINATED VENEER LUMBER (LVL)
- an engineered timber composite manufactured by laminating wood veneers using exterior-type adhesives.
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 then dried to a moisture content of 2–3% and then cut into thin long strands oriented parallel to one another
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ORIENTED STRAND BOARD (OSB)
an engineered structural board manufactured from thin wood strands, flakes or wafers sliced from small-diameter round timber logs and bonded with an exterior type adhesive (comprising 95% wood, 5% resin and wax) under heat and pressure
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THIN WEBBED JOISTS (I-JOISTS)
I-joists are structurally engineered timber joists comprising flanges made from solid timber or LVL and a web made from OSB, plywood or particleboard. The flanges and web are bonded together to form an I-section member, a structurally efficient alterative to conventional solid timber
WOOD CONSTRUCTION:
BOARDS
Unplaned softwood boards and planks are parallel square-edged materials.
Planed softwood boards and planks are planed smooth on one side and processed to an even thickness on the back, The edges are neither planed nor profiled.
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BOARDS
Matched boards are boards with grooves and planed tongues.
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JOINTS AND FASTENERS
WOOD CONSTRUCTION:
WOOD CONSTRUCTION:
Rectangular Wooden Dowels
used as joints & fasteners subject to shearing stress
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Rectangular Steel Anchor
Inserted into recesses across the grain, held with splices & secured with locking bolts
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Specially Designed Anchors
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Bolts
Bolts are pin-shaped fasteners made of round steel with heads, threads and nuts; they are driven into drilled holes with a maximum diameter 1 mm greater than their own, with washers on each side
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Nail Plates
These are 1-2 mm thick steel sheets with nail or claw-shapes punched and bent out on one or both sides.
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Angle Connectors
- a perforated plate angle or from punched sheet used 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 connection anchors
- use to fasten wooden elements into anchor tracks or with steel profiles
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Pillar Bases
Pillar bases (pillar bracket, post holder) serve to connect the pillar with the foundation or the ceiling. The connection is made by fixing base plates & dowels onto the concrete or by using ribbed rock dowels & grouting in the recesses in the concrete.
WOOD CONSTRUCTION: