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Core - Civil Engineering

    Chapter 3

    Wood

    3.1 : Introduction to Wood01:19

    3.1 : Introduction to Wood

    Trees, the source of wood, have a trunk enveloped by a shielding layer of dead bark. Under the dead outer bark is living bark. Next is the cambium, then ...

    208 views
    3.2 : Softwoods and Hardwoods01:28

    3.2 : Softwoods and Hardwoods

    Most cone-bearing trees have needle-like leaves and are classified as softwoods, and most hardwood trees have broad leaves that are shed on a seasonal ...

    144 views
    3.3 : Lumber01:19

    3.3 : Lumber

    Long, rectangular pieces of wood used in construction are called lumber. Logs harvested from trees are debarked and repeatedly fed through an automated ...

    108 views
    3.4 : Structural Properties and Dimensions of Lumber01:21

    3.4 : Structural Properties and Dimensions of Lumber

    Wood fibers align along the tree's length, giving it up to twenty times higher tensile strength along the fibers than across them. Wood is also ...

    80 views
    3.5 : Seasoning of Wood01:15

    3.5 : Seasoning of Wood

    Consider an unseasoned lumber used for flooring—the lumber contracts when the moisture evaporates, creating gaps at the joints of the floor. Wood ...

    86 views
    3.6 : Wood Surfacing01:14

    3.6 : Wood Surfacing

    Wood surfacing is done to achieve a smoother finish, ensure more accurate dimensions, and make handling safer. Dimensions of wood are marginally increased ...

    88 views
    3.7 : Lumber Defects01:23

    3.7 : Lumber Defects

    Growth defects in wood include knots, which are formed where branches connect to the tree trunk, knotholes that result from loose knots falling out, decay ...

    103 views
    3.8 : Wood Fasteners01:18

    3.8 : Wood Fasteners

    In wood structures, fasteners hold components in place. Connection strength mainly depends on direct member bearing. Different fasteners, like nails, are ...

    89 views
    3.9 : Veneer01:19

    3.9 : Veneer

    Veneer is a thin sheet of wood that is produced with a thickness of roughly one-eighth of an inch or less. Positioning a log into a large lathe and ...

    69 views
    3.10 : Wood Products01:21

    3.10 : Wood Products

    Wood products are formed by bonding wood strands, veneers, lumber, and waste materials like wood shreds for structural and nonstructural applications. ...

    79 views
    3.11 : Wood Panel Products01:18

    3.11 : Wood Panel Products

    Standard wood panels used for flooring, siding, and roofing have dimensions of 4 feet by 8 feet in width and length, and their thickness can range from ...

    70 views
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