Word | Definition |
I-beam | A steel beam with a cross section resembling the letter I. It is used for long spans as basement beams or over wide wall openings, such as a double garage door, when wall and roof loads bear down on the opening. |
I-joist | Manufactured structural building component resembling the letter "I". Used as floor joists and rafters. I-joists include two key parts: flanges and webs. The flange or from of the I joist may be made of laminated veneer lumber or dimensional lumber, usually formed into a 1 ½" width. The web or center of the I-joist is commonly made of plywood or oriented strand board (OSB). Large holes can be cut in the web to accommodate duct work and plumbing waste lines. I-joists are available in lengths up to 60 feet long |
Incandescent lamp | A lamp employing an electrically charged metal filament that glows at white heat. A typical light bulb. |
Incompatibility | Descriptive of two or more materials which are not suitable to be used together. |
Index | The interest rate or adjustment standard that determines the changes in monthly payments for an adjustable rate loan. |
Infiltration | The passage of air from indoors to outdoors and vice versa; term is usually associated with drafts from cracks, seams or holes in buildings. |
Inside corner | The point at which two walls form an internal angle, as in the corner of a room. |
Insulating glass | Window or door in which two panes of glass are used with a sealed air space between. Also known as Double glass. |
Insulation | Any material high in resistance to heat transmission that, when placed in the walls, ceiling, or floors of a structure, and will reduce the rate of heat flow. |
Insulation board, rigid | A structural building board made of coarse wood or cane fiber in ½- and 25/32-inch thickness. It can be obtained in various size sheets and densities. |
Insulation Fasteners | Any of several specialized mechanical fasteners designed to hold insulation down to a steel or a nailable deck. |
Interest | The cost paid to a lender for borrowed money |
Interior finish | Material used to cover the interior framed areas of walls and ceilings |
Interior Glazed | Glazing infills set from the interior of the building. |
Interplayer | In glazing, any material used to bond two lites of glass and/or plastic together to form a laminate. |
Interply | Between two layers of roofing felts that have been laminated together. |
Irrigation | Lawn sprinkler system. |
