Venetian Frame

rod, and it contains a section taken through one of the side lights, which are fixed, the central pair of sashes only opening. This is indicated by the grooves for the cord at the head. The rod is 9 in. wide and the frame is fixed within a 4J in. reveal in a 13J in. wall, which, as w'll be seen by the enlarged detail, Fig. 5, leaves 9J in. to be covered by the frame and the lining. As the architrave projects beyond this, it is obviously impossible to put it all in on 9 inches. One method of showing the paris that would come beyond the edge of the rod is given at A and B, Fig. 1. At the head, a broken section is shown with required width of lining figured in ; at the bottom the window board is drawn full width, and its position indicated at B'. An alternative method of showing the soffit and architrave is given in Fig. 4. Here it is set out across the rod at one end, all that is necessary for the workman being the width of the jamb lining.

To avoid showing the details to very small scale, the width rod. Figs. 2 and 3, is drawn as if in two parts, the assumed joint being at C, the middle of the central light. Of course, this is merely a book device; the actual rod would be in one length. The usual procedure in setting out this rod would be, after squaring across lines to represent the bottom side of the sill and of the head, to draw in the brick opening as shown in the detail, Fig. 5, then point off, successively, from this, the outside lining, outside sash, parting bead, inside sash, the overlap of the guard bead, and finally, the thickness of inside 1'ning, which completes the frame so far as the thickness is concerned. Each of these lines is gauged from the front edge of the rod down to the line of sill. Then the latter is drawn in by aid of a templet, or to the required section according to the details. Next the head of the frame is completed as shown, then the top rail of sash, also the bottom rail. Then, in the path of the top sash, mark the sight line of the bottom rail and tick off below, the thickness that the meeting rails are intended to he, in this case i| in.: then, if half of the distance between the lower point and sight line of top rail is set off from the

CIRCULAR-HEADEI) DOORS

aforesaid two points successively, it will place the meeting rails at their proper thickness exactly midway between the sight lines of the top and bottom rails. The dra wing-in of the guard beads will complete the height rod.

Make a note on the rod that the wide bead shown at the head is to be placed in the outer openings only.

A Pair of Circular headed Doors and Finishings are shown on page 186. The width roil, Fig. x, gives the necessary lines for setting-out the. rails of the doors, width and dishing of the panels, housing or grooving in the soffit of the linings, width of the edging E (see enlarged details, Fig. 5), also width of the head of the grounds, anil sight lines for moulds and sections of the architrave. The rebate on the off side of the linings is perhaps not strictly necessary, but it gives the joiner a better idea of the job and is usually put in. The width across the linings is shown, as in Fig. 2, either upon the. back of the rod or farther down its length upon the same side as may be found convenient. The height rod, Fig. 4, gives the heights of the various members between floor and springing, the parts above the springing (marked SP) are given merely for completeness, or to make the job clear to the workman, as he does not, or should not, take any dimensions from it; all of these must be taken from the elevation rod, Fig. 3, and the necessary data for setting-out the height rod are taken from Fig. 5. For instance, although the section of the linings and architrave shown on Fig. 4 is one taken at the centre of the opening, that of the door is taken at the inside edge of the stile, which is the. nearest point to the centre where a full section of the rails can be obtained.

Elevation Rod.—All shaped work requires an "elevation rod "—i.e. the curves must be set-out full size to obtain the moulds for marking out the stuff from which the several members are cut. This requirement is the keynote to the setting-out. Pome remarks have already been made upon the uselessness of embellishing the rod with lines that are not necessary—i.e. not required for the actual setting-out of

Elevations Oval Shaped Buildings
Fig. i. Width Rod. Fig. 2. Rod for Linings. Fig. 3. Elevation Rod. Fig. 4. Height Rod. Fig. 5. Enlarged Details of Architrave. Fig. 6. Soffit Rod

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Freehand Sketching An Introduction

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