Copper Flashings - A Manual - 1925 - Page 62
In Fig. 84 are shown the various parts of gutters, leaders and accessories as generally made up and stocked by manufacturers. While there is some difference in nomenclature throughout the country, the manufacturers and trade in general use the designations given.
HALF-ROUND EAVES TROUGH
Molded gutters. including half-round, are made in several designs. The most commonly used is the Single Bead, half-round Eaves Trough illustrated in Fig. 85-86.
This type of gutter is stocked throughout the country, and is carried in sizes up to 6 inch by practically every sheet metal contractor. Sizes above 6 inch are not in common use, as buildings requiring gutters of a larger size usually have them built-in or made a part of the cornice. Sizes up to 10 inch may be had and are stocked in the warehouses of large distributing companies in the principal cities.
List Prices Per Foot of Double-Bead Eaves Trough
Fig. 87 shows the Double-Bead Eaves Trough. This, as may be noted from its contour, is somewhat stiffer than the Single-Bead. On account of this stiffness it is possible to place the hangers slightly farther apart than when the Single-Bead is used. However, it is much more difficult to erect, as the inside bead makes it difficult to line it against the roof edge, and to secure the hanger. It also costs more than the Single-Bead. That the Single-Bead is in every respect satisfactory is indicated by the fact that there is so little call for the Double-Bead that it is not stocked and has to be made up to order.
Half-Round Eaves Trough is made in both lap- and slip-joint style (Figs. 85 and 86). The slip joints are used to provide expansion and contraction in long runs of gutters. They are set about every five lengths or fifty feet apart, the joints between being lapped and soldered. The slip joint is not soldered. In some localities the practice is to lap the lengths about three inches and use no solder or slip joints. This practice is satisfactory where there is considerable slope to the gutter and where there is no danger of leaves, etc., stopping the flow toward the outlet. It is hardly necessary to state that all joints in gutters should be made in direction of the flow.
MOLDED COPPER GUTTERS
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