Tredgold states that when a partition rests on a floor or is otherwise supported throughout its length it is better without braces, the quarterings being simply steadied by horizontal pieces nailed between or across them.
Fig. 309 is an elevation of a common partition. Its sill (ss) rests upon the floor below, two joists being laid close side by side and bolted together to support it. The head H enters the walls at its ends, but they should not rest upon the wall.
Fig. 309. Common Partition.
The filling-in pieces, studs, quarterings, or quarters (st), should be of light scantling just so thick (about 2 inches) that the laths can be nailed to them. They are stub-tenoned to the top and bottom plates, and stiffened by short struts (nn) called nogging pieces, or by continuous rails (h h), as in Fig. 310, notched on to the uprights and nailed to them.
The nogging pieces should be fixed as shown, alternately, at different levels, so that their ends may be got at for nailing, and should not come up flush with the face of the stud on either side or they will interfere with the key for the plastering.
The studs should be placed at such a distance apart as will suit the lengths of the laths. These are generally 3 or 4 feet long, and the studs may be at 12 inches central intervals, so that the ends of the laths may fall upon every third or every fourth stud.
The studs D on each side of the door are called the door-studs, principal posts, uprights, or double quarterings. They are tenoned through the head and sill, and so are the stiffening studs (s s t), one of which is shown in the figure.
In trussed partitions the studs should be about 1/2 inch on each side wider than the timbers of the truss, the nogging pieces, and any other timbers with wide surfaces. Narrow half-inch pieces are nailed upon these surfaces to receive the laths, so that the key for the plastering may not be interrupted, and that room may be left for the shape of the truss when these are away.
When the partition rests on the floor below, the sill would project inconveniently above the floor in the doorway. That portion of the sill is therefore cut out after the partition is fixed.