Figure 6-58-Use of gutter and downspout: A. Downspoutwith splash block; B. Drain to storm sewer.Figure 6-59.-Formed metal gutters.Figure 6-60.-Gutters and downspouts: A. Half-roundgutter; B. Formed gutter; C. Round downspout;D. Rectangular downspout.Ceiling and Wall CoveringCeiling and wall covering may be broadlydivided into PLASTER and DRY-WALLcovering. Dry-wall covering is a general termapplied to sheets or panels of wood, plywood,gypsum, fiberboard, and the like. A plasterand/or ceiling covering requires a “plaster base”and a “plaster ground” before it is installed. Theplaster base, such as gypsum, fiberboard, or metallath, provides a plane-surface base to which theplaster can be applied. Wooden strips of the samethickness as the combined thickness of the lathand plaster, called plaster ground, are installedbefore the lath is applied to serve as guides forthe plasterers to ensure uniform plaster thicknessaround doorframes and window frames andbehind casings.The use of dry wall over the lath-and-plasterfinish is rapidly increasing. Installation orconstruction time is faster with the application ofdry wall. Being wet, plaster requires drying timebefore other interior work can be started.Gypsum is one of the most widely used types ofdry-wall finishes. It is made up of a gypsum fillerfaced with paper or with a foil back that servesas a vapor barrier on exterior walls. It is alsoavailable with vinyl or other prefinished surfaces.It comes in 4- by 8-ft sheets and in lengths of upto 16 ft for horizontal application. Notice in6-35
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