By Donald Breyer, Kelly Cobeen, Kenneth Fridley, David Pollock Jr.
The prime textual content and reference on wooden layout, up-to-date to incorporate the most recent codes and information persisted the sterling typical set through past versions, this fundamental reference leads you thru the total layout of a wooden constitution (except for the foundation), following a similar series utilized in the particular design/construction strategy.
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Extra resources for Design of Wood Structures-ASD LRFD
However, building codes have dropped this terminology, and most wood-frame shearwall buildings are now classified as bearing wall systems. The distinction between the shearwall and diaphragm system and other systems is explained in Chap. 3. Other types of wood building systems, such as glulam arches and post-frame (or pole) buildings, are beyond the specific scope of this book. It is felt that the designer should first have a firm understanding of the behavior of basic shearwall buildings and the design procedures that are applied to them.
7 treats the design methods for columns and members subjected to combined axial and bending loads. As one might expect, some parts of the vertical-load-carrying system are also part of the lateral-force-resisting system (LFRS). The sheathing for wood roof and floor systems is one such element. The sheathing distributes the vertical loads to the supporting members, and it also serves as the skin or web of the diaphragm for resisting lateral forces. Chapter 8 introduces the grades and properties of wood-structural panels and essentially serves as a transition from the vertical-load- to the lateral-force-resisting system.
R1 roof live load reduction factor for large tributary roof areas R1 seismic force generated by mass of wall that is parallel to earthquake force being considered R2 roof live load reduction factor for sloped roofs RB slenderness ratio of laterally unbraced beam ri portion of story force resisted by a shearwall element. ) U wind uplift resultant force (lb, k) V basic wind speed (mph) V seismic base shear (lb, k) V shear force in a beam, diaphragm, or shearwall (lb, k) v unit shear in diaphragm or shearwall (lb/ft) V* reduced shear in beam determined by neglecting load within d from face of supports (lb, k) v2 unit shear in second-floor diaphragm (lb/ft) v12 unit shear in shearwall between first- and second-floor levels (lb/ft) v2r unit shear in shearwall between second-floor and roof levels (lb/ft) Vƍn adjusted LRFD shear resistance parallel to grain in a beam (k) Vpx diaphragm forces created by the redistribution of forces between vertical elements vr unit shear in roof diaphragm (lb/ft) Vstory story shear force (lb, k) Vu ultimate (factored) shear force in a beam, diaphragm, or shearwall (lb, k) vu ultimate (factored) unit shear in horizontal diaphragm or shearwall (lb/ft) Vu* reduced ultimate (factored) shear in beam determined by neglecting load within d from face of supports (lb, k) vu2 ultimate (factored) unit shear in second-floor diaphragm (lb/ft) vu12 ultimate (factored) unit shear in shearwall between first- and second-floor levels (lb/ft) vu2r ultimate (factored) unit shear in shearwall between second-floor and roof levels (lb/ft) vur ultimate (factored) unit shear in roof diaphragm (lb/ft) Vwall wall shear force in the wall with the highest unit shear (lb, k) W lateral force due to wind (lb, k, lb/ft, psf) W weight of structure or total seismic dead load (lb, k) w reference withdrawal design value for single fastener (lb/in.
Design of Wood Structures-ASD LRFD by Donald Breyer, Kelly Cobeen, Kenneth Fridley, David Pollock Jr.