[I] ICBO (International Conference of Building Officials (Uniform Building Code) A minimum model regulatory code dedicated to public safety through development and promotion of uniform codes and standards. Ice Dam A dam or blockage formed on a roof by the buildup of ice along the eave of a building. IFI (Industrial Fasteners Institute) Abbrreviation. III (Institute of the Ironworking Industry Abbreviation. Impact Factor The factor by which the static weight is increased by dynamic application. Impact Load A weight that is dropped or a dynamic load generated by movement of a live load such as vehicles, craneways, etc. Impact Strength The ability of a material to absorb the energy of a load delivered rapidly to a member. Impact Wrench A pneumatic device used to tighten nuts on bolts. Inclusions Nonmetallic material which is entrapped in sound metal. Inelastic Action Deformation of a material which does not disappear when the force that produced it is removed. Inflection Point Represent a point of zero moment in structural member. Influence Line An influence line is a curve whose ordinates give the values of some particular function (shear, moment, reaction, etc.) in an element due to a unit load acting at the point corresponding to the particular ordinate being considered. Influence lines for statically determinate structures are straight lines and for statically indeterminate structures the lines are curved and their construction involves considerable analysis. Instability A condition reached when a structure or structural member is loaded in which continued deformation results in a decrease in its load-resisting capacity. Insulation Any material used to reduce heat transfer in a roof or building. Intermittent Weld A weld which is not continuous. It is broken by recurring unwelded spaces. Internal Pressure The pressure inside a building which is a function of the wind velocity and the number and locations of openings. Interior Bearing Bearing supports which are interior to two exterior supports. ISO 9000 (International Organization for Standardization) Is a series of quality management and assurance standards for companies to strive for. Isotropic A material having equal physical properties along all axes.
Posted on: Mon, 02 Dec 2013 17:20:25 +0000