{"id":6,"date":"2013-06-17T21:00:11","date_gmt":"2013-06-17T21:00:11","guid":{"rendered":"https:\/\/trusstek.com\/?page_id=6"},"modified":"2013-06-18T00:24:56","modified_gmt":"2013-06-18T00:24:56","slug":"glossary","status":"publish","type":"page","link":"https:\/\/trusstek.com\/?page_id=6","title":{"rendered":"Glossary"},"content":{"rendered":"
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Axial Force<\/strong>\u00a0– A push (compression) or pull (tension) acting along the length of a member.\u00a0 Usually measured in pounds (lbs).<\/p>\n

Axial Stress\u00a0<\/strong>– The axial force acting along the length of a member, divided by the cross-sectional area of the member. Usually measured in pounds per square inch (psi).<\/p>\n

Bearing\u00a0<\/strong>– Structural support of a truss, usually walls, hangers or post.<\/p>\n

Bending Moment\u00a0<\/strong>– A measure of the bending effect on a member due to forces acting perpendicular to the length of the member. the bending moment at the given point along a member equals the sum of all perpendicular forces, either to the left or the right of the point, times their corresponding distances from the point. Usually measured in inch-pounds.<\/p>\n

Bending Stress<\/strong>\u00a0– The force per square inch acting at a point along the length of of a member, resulting from the bending moment applied at that point. Usually measured in pounds per square inch (psi).<\/p>\n

Bottom Chord<\/strong>\u00a0–\u00a0\u00a0 A horizontal or inclined (scissors truss) member that establishes the lower edge of a truss, usually carrying combined tension and bending stresses.<\/p>\n

Built-Up Beam<\/strong>\u00a0– A single unit composed of two or more wood members having the same thickness but not necessarily the same depth, which provides a greater load carrying capacity as well as greater resistance to deflection.<\/p>\n

Butt-Cut<\/strong>\u00a0– Slight vertical cut at outside end truss bottom chord made to insure uniform nominal span and tight joints.\u00a0Usually 1\/4 inch.<\/p>\n

Camber<\/strong>\u00a0– An upward vertical displacement built into a truss to offset deflection due to dead load.<\/p>\n

<\/a>Cantilever<\/strong>\u00a0-The part of a structural member that extends beyond its support.\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0To see the picture click here.<\/a><\/p>\n

Clear Span<\/strong>\u00a0– Horizontal distance between interior edges of supports.<\/p>\n

Combined Stress<\/strong>\u00a0– The combination of axial and bending stresses acting on a member simultaneously, such as occurs in the top chord (compression + bending) or bottom chord (tension + bending) of a truss.<\/p>\n

Concentrated Load<\/strong>\u00a0– An additional load centered at a given point. An example is a crane or hoist hanging from the bottom at a panel point or mechanical equipment supported by the top chord.<\/p>\n

Dead Load<\/strong>\u00a0– Permanent loads that are constantly\u00a0 on the truss, ie: the weight of the truss itself, purlins, sheathing, roofing, ceiling, ect.<\/p>\n

Deflection<\/strong>\u00a0– Downward or horizontal displacement of of a truss due to loads.<\/p>\n

Diaphragm<\/strong>\u00a0– A large, thin structural element that acts as a horizontal beam to resist lateral forces on a building.<\/p>\n

<\/a>Drag Strut<\/strong>\u00a0– Typically a horizontal member, such as a truss or beam, that transfers shear from a diaphragm to a shear wall.<\/p>\n

Duration Of Load Factor\u00a0<\/strong>– An adjustment in the allowable stress in a wood member, based on the duration of the load causing the stress . The shorter the time duration of the load, the higher the percentage increase in allowable stress.<\/p>\n

<\/a>Heel\u00a0<\/strong>– Point on a truss at which the top and bottom chord intersect at the end of a truss with a sloping top chord.<\/p>\n

Lateral Bracing<\/strong>\u00a0– A member installed and connected at right angles to a chord or web member of a truss to resist lateral movement.<\/p>\n

Level Return<\/strong>\u00a0– Lumber filler placed horizontally from the end of an overhang to the outside wall to form soffit framing.<\/p>\n

Live Load<\/strong>\u00a0– Any load which is not of permanent nature, such as snow, wind, seismic, movable concentrated loads, furniture, ect. Live loads are generally of short duration.<\/p>\n

Nominal Span<\/strong>\u00a0– Horizontal distance between outside edges of the Outermost Supports.<\/p>\n

<\/a>Overhang<\/strong>\u00a0– The extension of the top chord (usually) or bottom chord of a truss beyond the support.\u00a0\u00a0\u00a0Click here to see an overhang<\/a><\/p>\n

Panel<\/strong>\u00a0– The chord segment defined by two successive joints.<\/p>\n

Panel Length<\/strong>\u00a0– The centerline distance between joints measured along the chord.<\/p>\n

Panel Point<\/strong>\u00a0– The centerline of the point of intersection in a joint where a web(s) meets a chord.<\/p>\n

Peak<\/strong>\u00a0– Point on a truss where the sloped top chords meet.<\/p>\n

Plumb Cut<\/strong>\u00a0– Top chord cut that is plumb to the building foor line provided for vertical installation of a fascia.<\/p>\n

Purlin<\/strong>\u00a0– A horizontal member in a roof perpendicular to the truss top chord used to support the decking.<\/p>\n

Reaction<\/strong>\u00a0– Forces acting on a truss through its supports that are equal but opposite to the sum of the dead and live loads,<\/p>\n

Shearwall<\/strong>\u00a0– A wall element that acts as a large vertical beam, cantilevered from the foundation to resist lateral forces on the building.<\/p>\n

<\/a>Slope (Pitch)<\/strong>\u00a0– The inches of vertical rise in 12 inches of horizontal run for inclined members, generally expressed as\u00a03\/12,\u00a0<\/em>4\/12 etc.<\/p>\n

<\/a>Span\u00a0–\u00a0<\/strong>Length of bottom chord including cantilevers<\/p>\n

Splice Point<\/strong>\u00a0(Top or Bottom Chord Splice) – The point at which two chord members are joined together to form a single member.<\/p>\n

Square Cut<\/strong>\u00a0–\u00a0A\u00a0<\/em>cut perpendicular to the slope of the member at its end.<\/p>\n

<\/a>Top Chord<\/strong>\u00a0– An inclined or horizontal member that establishes the upper edge of a truss, usually carrying combined compression and bending stresses.<\/p>\n

Truss<\/strong>\u00a0– A pre-built component that functions as a structural support member. A truss employs one or more triangles in its construction.<\/p>\n

Vibration<\/strong>\u00a0– The term associated with the serviceability of a floor. If the occupant feels the (loot respond to walking or other input, it\u00a0<\/strong>may be referred to as vibration or response to load.<\/p>\n

Webs<\/strong>\u00a0– Members that join the top and bottom chords to form the triangular patterns that give truss action, usually carrying tension or compression stresses (no bending).<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n

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Axial Force\u00a0– A push (compression) or pull (tension) acting along the length of a member.\u00a0 Usually measured in pounds (lbs). Axial Stress\u00a0– The axial force acting along the length of a member, divided by the cross-sectional area of the member. Usually measured in pounds per square inch (psi). Bearing\u00a0– Structural support of a truss, usually<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"open","ping_status":"open","template":"template-full.php","meta":{"_coblocks_attr":"","_coblocks_dimensions":"","_coblocks_responsive_height":"","_coblocks_accordion_ie_support":"","jetpack_post_was_ever_published":false,"footnotes":""},"class_list":["post-6","page","type-page","status-publish","hentry"],"jetpack_shortlink":"https:\/\/wp.me\/P3ERCH-6","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/trusstek.com\/index.php?rest_route=\/wp\/v2\/pages\/6","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/trusstek.com\/index.php?rest_route=\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/trusstek.com\/index.php?rest_route=\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/trusstek.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/trusstek.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=6"}],"version-history":[{"count":8,"href":"https:\/\/trusstek.com\/index.php?rest_route=\/wp\/v2\/pages\/6\/revisions"}],"predecessor-version":[{"id":73,"href":"https:\/\/trusstek.com\/index.php?rest_route=\/wp\/v2\/pages\/6\/revisions\/73"}],"wp:attachment":[{"href":"https:\/\/trusstek.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=6"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}