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.

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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

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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

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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

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WOOD CONSTRUCTION:

Rafter-to-purlin Connectors/purlin Anchors

- use for connecting crossing beams.

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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.

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