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ACCESSIBLE ROUTE: A continuous unobstructed path connecting all accessible elements and spaces of a building or facility. Interior accessible routes may include corridors, floors, ramps, elevators, lifts, and clear floor space at fixtures. Exterior accessible routes may include parking access aisles, curb ramps, crosswalks at vehicular ways, walks, ramps, and lifts.
ADHESION: The tendency of two surfaces in forceful contact to stick together. The resulting increased resistance to slipping may become greater as residence time increases.
BARRICADE: A physical obstruction that is intended to warn and limit access to a hazardous area.
CARPET: Permanently secured fibrous floor covering.
CLEAN: Free from visible or tactile contamination.
COATING: A layer of any substance intentionally applied to a surface to modify its functional or decorative characteristics.
COEFFICIENT OF FRICTION: The ratio of two forces acting at the interface of two contacting solid bodies. The force used in the numerator is parallel to the surfaces and the force used in the denominator is perpendicular (normal) to the surfaces.
CONTAMINANT: Any substance on a surface that affects traction performance.
CROSS SLOPE: The slope of a pedestrian walkway that is perpendicular to the direction of travel.
DIRECTIONAL BIAS: A characteristic of a material whose coefficient of friction measurement may differ depending n the direction in which the material is being tested.
DWELL TIME: See Residence Time.
DYNAMIC COEFFICIENT OF FRICTION (DCOF): The ratio of the horizontal component of force applied to a body required to overcome resistance to movement when the body is already in motion divided by the vertical component of the weight of the body or force applied to the surface where movement occurs.
DYNAMIC FRICTION: The resistance opposing the force required to perpetuate the movement of one surface on or over another.
FACADE: Face or front elevation of a building or home.
FAIR: A smooth transition between adjacent walking surfaces.
FALL: Undesirable descent due to the force of gravity usually from a standing posture or during ambulation, to a lower level, usually the ground or floor.
FASCIA: Outside horizontal face of member on the edge of a roof or cornice.
FELT PAPER: Papers, sometimes tar-
FENESTRATION: Arrangement and sizing of doors and windows in a building or home.
FILLED INSULATION: A loose insulating material poured from bags or blown by machines into walls.
FIREBRICK: A brick that is especially hard and heat-
FIRE DOOR: A fire-
FLASHING: A thin impervious material placed in construction to prevent water penetration and/or provide water drainage, esp. between a roof and wall, and over exterior door openings and windows of a building or home.
FLUE: A non-
FLUE LINING: Terra-
FOOTING: That portion of the foundation of a building or home which transmits loads directly to the soil; may be the widened part of a wall or column. Used to spread the load over a greater area to prevent or reduce settling.
FOOTING FORM: A wooden or steel form used to hold concrete to the desired shape and size until it hardens.
FOOTPRINT: The outline of a commercial building or home's foundation; this means the building or home's outermost points, and is used for site planning.
FORESEEABLE PEDESTRIAN PATH: Any place where a pedestrian could reasonably be expected to walk.
FRAMING: Wood skeleton of a building or house constructed one level on top of another.
FRENCH DOOR: A wood door paneled with panes of glass, often used in pairs.
FRICTION: Resistance to the relative motion of two solid objects in contact. This force is parallel to the plane of contact and is perpendicular to the normal force.
FRIEZE BOARD: Trim member below the cornice that is fastened against the wall.
FURRING STRIPS: Thin strips fastened to walls or ceilings for leveling and for attaching finish surface material.
FURTHER EVALUATION: Examination and analysis by a qualified professional, tradesman, or service technician, beyond that provided by an inspector in a home inspection or a commercial building inspection.
FUSE: A strip of soft metal inserted in an electric circuit and designed to melt and open the circuit should the current exceed a predetermined value.
GRAIN: A characteristic of many natural materials such as wood that may exhibit directional bias as it relates to slip resistance.
HIGH TRACTION: The physical property of a floor or walkway surface that is designed to mitigate slipping during normal human ambulation by providing a reasonably sufficient level of available contact friction.
COLUMN: A steel column used as a support for girders and beams.
LAMINATED BEAM: Beam made of superimposed layers of similar building materials (usually wood) by uniting them with glue under pressure.
LANAI: A verandah or porch.
LANDING: A platform in a flight of stairs.
LAP JOINT: Joint produced by lapping and joining two similar members.
LATH: A building material used as a base for the application of plaster.
LATTICE: Grillwork made by crossing small wooden strips.
LEDGER: A horizontal member, which is supported by hangers or by upright posts and carries joists.
LINTEL: A horizontal building structural member over an opening, which carries the weight of the wall above it; usually of steel, stone, or wood.
LOADS: Live load: The total of all moving and variable loads that may be placed upon a building or home.Dead load: The weight of all permanent, stationary construction included in a building or home.
LOUVER: Opening or slatted grillwork that allows ventilation while providing protection from rain, sight, or light.
LUMBER: The product of the saw mill and planing mill not further manufactured other than by sawing, resawing, and passing lengthwise through a planing machine, crosscut to length and matched.
RAMP: A walkway surface that has a slope steeper than 1:20 (5%).
RESIDENCE TIME: The period of time between initial sensor contact with the test surface and the instant that relative motion is initiated.
SASH: Individual frame into which glass is set; the movable part of a double-
SBR: Styrene Butadiene Rubber
SCRATCH COAT: The first coat of plaster. It is scratched to provide a good bond for the next coat.
SCUTTLE: Small opening in a ceiling that provides access to an attic or roof.
SEPTIC TANK: A concrete or steel tank where sewage is reduced to liquid and gases by bacterial action. About half the sewage solids become gases that escape back through the vent stack in the house. The liquids flow from the tank into the ground through a leaching field tile bed.
SERVICE CONNECTION: The electric wires to the building from the outside power lines.
SETBACK: Distance from the property lines, front, side, and rear, to the face of building or home; established by zoning ordinances.
SETTLEMENT: Compression of the soil or the members in a structure.
SHAKE: A thick wood shingle with an uneven surface; usually formed either by splitting a log into tapered radial sections or by sawing.
SHEATHING: Rough covering over the framing of a building or home, either roof or wall, which is not exposed when finish material is applied.
SHED ROOF: A roof slanting in one direction.
SHINGLE: A roofing unit of wood, asphaltic material, slate, tile, concrete, asbestos cement, or other material used as an exterior covering on sloping roofs and side walls; applied in an overlapping fashion. See Shake and Wood Shingle
SHIPLAP: Boards with lapped joints along their edges.
SHORING: Lumber placed in a slanted position to support the structure of a building or home temporarily.
SHORT CIRCUIT: The condition that exists when a hot wire comes in contact with a neutral or grounded wire or conductor within a circuit. It should cause the fuse to blow or the circuit breaker to trip.
SIDING: A finish covering on the exterior walls of a building or home in the form of a series of horizontal strips or boards; made of such cladding materials as wood or aluminum. The strips are usually applied horizontally with an overlap to provide resistance against the penetration of water.
SIDELIGHT: A vertical window beside a door or another window.
SIDEWALK: A paved surface, such as concrete or asphalt, usually parallel and adjacent to streets.
SILL: Horizontal exterior member below a window or door opening. In frame construction, the lowest structural member that rests on the foundation.
SISTERING: Reinforcing a structural member by nailing or affixing a strengthening piece to a weakened piece.
SKYLIGHT: An opening in the roof which is glazed with a transparent or translucent material; used to admit diffused light to the building space below..
SLAB CONSTRUCTION: A reinforced concrete floor and foundation system.
SLIP: A sliding motion due to loss of traction on a walkway surface (floor, stair tread, pavement).
SLIP RESISTANCE: The property of a floor or walkway surface that acts in sufficient opposition to those forces and movements exerted by a pedestrian under all normal conditions of human ambulation.
SLIP RESISTANT: The provision of adequate slip resistance to reduce the likelihood of slip for pedestrians using reasonable care on the walking surface under expected use conditions.
SLOPE: See Pitch.
SMOKE CHAMBER: The portion of a chimney flue located directly over the fireplace.
SOFFIT: Underside of an overhang such as the eave, a second floor, or stairs.
SOIL STACK: Vertical plumbing pipe that carries sewage.
SOLE PLATE: The horizontal framing member directly under the studs.
SPACKLE: To cover wallboard joints with plaster.
SPAN: Horizontal distance between supports for joists, beams, or trusses.
SPANDREL: In a multistory commercial building, a wall panel filling the space between the top of the window in one story and the sill of the window in the story above.
SPECIFICATIONS: The written or printed direction regarding the details of a building or home not included in the set of working drawings.
SQUARE: In roofing, 100 sq ft of roofing material.
STACK: A vertical pipe
STAIRS: A series of steps.
STANDPIPE: A pipe or tank used for the storage of water, especially for emergency use.
STATIC COEFFICIENT OF FRICTION (SCOF): The ratio of the horizontal component of force applied to a body that just overcomes the resistance to slipping to the vertical component of the weight of the object or force applied.
STATIC FRICTION: The resistance opposing the force required to start the movement of one surface on or over another.
STEENING: Brickwork without mortar.
STICTION: A phenomenon in which a liquid film is squeezed out of the interface between the shoe bottom and the walkway surface as a result of residence time.
STILE: Vertical framing member of a panel door.
STORM SEWER: A sewer that is designed to carry away rain water from a property, but not sewage.
STORY: Space between two floors of a building or home.
STRINGER: One of the sides of a flight of stairs. The supporting member cut to receive the treads and risers.
STRUCTURAL COMPONENT: A building component that supports non-
STRUT: A brace or any piece of a frame which resists thrusts in the direction of its own length; may be upright, diagonal, or horizontal.
STUCCO: Any of various plasters used for covering walls, especially an exterior wall covering in which cement is used.
STUD: An upright post or support, esp. one of a series of vertical structural members, which act as the supporting elements in a wall or partition.
SUBFLOOR: Material fastened directly to floor joist below the finish floor.
SUBSTRATE: A surface upon which paint or varnish have been or may be applied. Examples included in the HUD Guildelines are: wood, plaster, metal, brick, drywall, and concrete. Substrates can contain lead absorbed from paint or from other sources.
SUBSTRATE EFFECT: The returning of backscattered radiation from the paint, substrate
or underlying material to the XRF analyzer. This radation when counted as lead X-
SUMP: A pit in a basement floor to collect water, into which a sump pump is placed to remove water.
SURFACTANT SOLUTION: A solution employed to reduce the water surface tension when
testing on wet hard-
SUSPENDED CEILING: Finish ceiling hung below the underside of the building or home structure, either floor or roof.
SWALE: A drainage channel formed on a property where two slopes meet.
SYSTEM: A combination of interacting or interdependent components in a building or home assembled to carry out one or more functions.
TRACTION: The friction between the sole material of a shoe and the fixed surface it moves upon.
TRIBOMETER: An instrument or device specifically designed to measure the available level of traction upon a floor or walkway surface.
Approved Tribometer – A tribometer that is in compliance with the following:
TRIBOMETRY: The measurement of floor slip resistance or shore traction properties on a walkway surface.
TRIP: An interruption of one’s gait because of an obstruction or an irregularity in or on a surface.
WALKWAY: Walking surfaces constructed for pedestrian usage including floors, ramps, walks, sidewalks, stair treads, parking lots and similar paved areas which may be reasonably foreseeable as pedestrian paths. Natural surfaces such as fields, playing fields, path, walks, or footpaths, or a combination thereof, are not included.
WALKWAY AUDITOR: A person competent to offer reliable observations and opinions regarding the conformance of an audited walkway to relevant safety guidelines or requirements.
WALKWAY SURFACES: Interior and exterior walking surfaces constructed and intended for pedestrian use, including but not limited to floors, ramps, sidewalks, stair treads and paved areas reasonably foreseeable as pedestrian paths.
WALKWAY SURFACE HARDWARE: Includes manhole covers, cellar doors used as walking surfaces, junction box covers, cleanout covers, hatches, sidewalk elevator covers, sewer grates, utility covers, and similar elements that pedestrians can reasonably be expected to walk on.