Framed Partition without Doorways - This may be formed like an ordinary king-post truss, filled in as described below.

Framed Partition With Ordinary Doorway In The Centre

A truss of queen-post form may be used, as in Fig. 310, which is taken from Tredgold's Carpentry.

The braces (bb) correspond to the principal rafters, and Tredgold recommends that they should be inclined at an angle of about 40° with the sill (SS).

The doorhead fulfils the part of the straining beam,1 while the bottom plate or " sill"2 (S S) corresponds to the tie beam, and may pass between the joists under the floor boards.

Fig. 310. Framed Partition with Doorway in centre.

Fig. 310. Framed Partition with Doorway in centre.

Framed Partition With Wide Doorway In Centre

Fig. 311 shows a partition with queen-post trusses, and having in the centre a wide doorway to receive folding-doors.

Fig. 311. Framed Partition with wide Doorway.

Fig. 311. Framed Partition with wide Doorway.

It will be seen that the trusses carry the whole weight of the partition, and transmit it to convenient points in the walls, where stone templates are provided to support the ends of the head or top plate (H), the intertie (T), and the sill (S).

1 See Part II.

2 Sc. Sole, or sometimes Bottom Runner.

The framing is further strengthened by the bolts on each side of the doorposts.

This is a very strong partition, and adapted for bearing, if necessary, the weight of the floor above it, which latter is shown in dotted lines.

A partition of this form is said to be " one-fourth trussed," signifying that the upper truss occupies that proportion of the whole depth.

Framed Partition With Side Doors

The partition in Fig. 3 12 1 is sustained by the king-post truss over the doorways, from which hangs the lower portion of the framing.

The floor below is dotted in order to show the pieces (x) which are framed in between the joists to form a support to the feet of the doorposts.

Fig. 312. Framed Partition with Doorways at sides.

Fig. 312. Framed Partition with Doorways at sides.

Details

Figs. 313, 314 give enlarged illustrations of some of the joints of the partition shown in Fig. 312.