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CONCENTRICALLY-BRACED FRAME is a DIAPHRAGM is a horizontal or nearly braced frame in which the members are subjected horizontal system acting to transmit lateral forces primarily to axial forces. to the vertical resisting elements. The term...

CONCENTRICALLY-BRACED FRAME is a DIAPHRAGM is a horizontal or nearly braced frame in which the members are subjected horizontal system acting to transmit lateral forces primarily to axial forces. to the vertical resisting elements. The term "diaphragm" includes horizontal bracing systems. CONVENTIONAL LIGHT-FRAME CONSTRUCTION is a type of construction in DIAPHRAGM, BLOCKED is a diaphragm in which the primary structural elements are formed which all sheathing edges not occurring on by a system of repetitive wood framing members. framing members are supported on and connected to blocking. COVERING, IMPACT-RESISTANT is a covering designed to protect impact-resistant DIAPHRAGM CHORD or SHEAR WALL glazing. CHORD is the boundary element of a diaphragm or shear wall that is assumed to take axial stresses CRIPPLE WALL is a framed stud wall analogous to the flanges of a beam. extending from the top of the foundation to the underside of floor framing for the lowest DIAPHRAGM STRUT (drag strut, tie, and occupied level. collector) is the element of a diaphragm parallel to the applied load that collects and transfers DEAD LOADS consist of the weight of all diaphragm shear to the vertical resisting elements materials and fixed equipment incorporated into or distributes loads within the diaphragm. Such the building or other structure. members may take axial tension or compression. DECK is an exterior floor system supported on at DIAPHRAGM, UNBLOCKED is a diaphragm least two opposing sides by an adjacent structure that has edge nailing at supporting members only. and/or posts, piers, or other independent supports. Blocking between supporting structural members at panel edges is not included. DESIGN BASIS GROUND MOTION is that ground motion that has a 10 percent chance of DRIFT or STOREY DRIFT is the lateral being exceeded in 50 years as determined by a displacement of one level relative to the level site-specific hazard analysis or may be above or below. determined from a hazard map. DUAL SYSTEM is a combination of moment- DESIGN FORCE is the equivalent static force resisting frames and shear walls or braced frames to be used in the determination of wind loads for designed in accordance with the criteria of open buildings and other structures. Section 208.4.6.4. DESIGN RESPONSE SPECTRUM is an EAVE HEIGHT is the distance from the ground elastic response spectrum for 5 percent equivalent surface adjacent to the building to the roof eave viscous damping used to represent the dynamic line at a particular wall. If the height of the eave effects of the Design Basis Ground Motion for the varies along the wall, the average height shall be design of structures in accordance with Sections used. 208.5 and 208.5.3. ECCENTRICALLY BRACED FRAME DESIGN SEISMIC FORCE is the minimum (EBF) is a steel-braced frame designed in total strength design base shear, factored and conformance with Section 528. distributed in accordance with Section 208.5. EFFECTIVE WIND AREA is the area used to DESIGN PRESSURE is the equivalent static determine GCp. For cladding fasteners, the pressure to be used in the determination of wind effective wind area shall not be greater than the loads for buildings. area that is tributary to an individual fastener. ELASTIC RESPONSE PARAMETERS are ASCE7-10 – basis of wind loads of NSCP forces and deformations determined from an elastic dynamic analysis using an unreduced Structural Standard for Antenna Supporting ground motion representation, in accordance with Structures and Antennas - tia standard wind Section 208.5.3. Hill – a rise from average terrain from all ESCARPMENT, also known as scarp, with direction respect to topographic effect in Section 207A.8, is a cliff or steep slope generally separating two Wind Speed Domains – (subcritical, levels or gently sloping areas (see Figure 207A- transitional, supercritical) 8-1). ANSI – American National Standards Institute ESSENTIAL FACILITIES are buildings, towers, and other vertical structures that are intended to remain operational in the event of TIA – Telecommunications Industry extreme environmental loading from wind or Association earthquakes. EPA – EMective Projected Area FACTORED LOAD is the product of a load specified in Sections 204 through 208 and a load ANTENNA. Any apparatus designed for the factor. See Section 203.7 for combinations of transmitting and/or receiving of factored loads. electromagnetic waves, including telephonic, radio, or television communications. Types of NSCP CHAPTER 2 – Minimum Design Loads elements include omni-directional (whip) antennas, sectionalized (panel) antennas, multi or single bay (FM and TV), or parabolic STRUCTURE is an assemblage of framing (dish) antennas. members designed to support gravity loads and resist lateral forces. Structures may be categorized as building structures or nonbuilding structures. STRENGTH DESIGN is a method of proportioning and designing structural members such that the computed forces produced in the members by the factored load do not exceed the member design strength. The term strength design is used in the design of concrete structures. TOWERS AND OTHER STRUCTURES are nonbuilding structures including poles, masts and billboards that are not typically occupied by persons but are also covered by this code. NSCP Section 207 -wind loads