6. Scribing of the Structural Components

The present booklet only deals with scribing of the structural components and not with working of the necessary wood joints.

Scribing of the runners

When the pitch size for the sections has been calculated, the head and foot runners are to be inspected and the joining sides to be marked with a jointing mark.

For more efficient scribing, the runners are to be put on two one-ell trestles.

The runners are to be put on the trestles so as to ensure that the joining sides of the head runner and foot runner are facing each other, that the runners lie closely together and parallel to each other and that their left ends are flush!

Figure 18

Runners put on the trestles

1 closely together, 2 parallel to each other, 3 about flush at the left end, 4 jointing mark, 5 one-ell trestles, 6 saddle timber (of trestle)

Why must the joining sides face each other?

______________________________________

By putting the runners to one another, they can be scribed together to ensure parallelism of the posts to be erected.

The following steps are recommended for scribing of the runners:

1. Scribe the shortening at the left ends and mark with section mark!
Go to the right only as far as necessary to produce a right-angle section.

2. Scribe the pitch size and mark the joining side!
The pitch size of each section is to be scribed cumulatively.¹⁾
See Fig. 16)

¹⁾ cumulative = increasing steadily in amount by one addition after another

3. Measure-in and scribe the post width!
A template is to be used having the width of the posts.
(template = master board)

4. Measure-in and scribe the joint post width!
The difference between post and joint post is to be equally distributed at both sides.
(See Fig. 17)

5. Scribe the tenon parapet and mortise width!
A commercial or self-made marking gauge is to be used for this purpose.
Do not adjust the marking gauge! It is to be used again for marking the posts and stiffening transoms!

6. Scribe the longitudinal half joints at the right ends of the runners!
Think of the fact that the upper half-joint accommodates the tenon.
(This steps may not be required in any case).

Scribing of the posts

Before the posts can be scribed, the room height and runner height (s) must be known. The runner height should be between 40 mm and 50 mm.

To determine the post length, deduct two runner heights (s) from the room height and add two tenon lengths!

A tenon length of 20 mm is sufficient.

After determining the length of the posts, inspect the posts, decide on the joining side and mark with jointing mark. The joining side should always be a side guaranteeing the evenness of the partition wall to be built.

For scribing of the posts, no more than five posts should be put on two one-ell trestles. It is important to put the posts on the trestles so that their left ends are about flush, parallel to each other and closely together and with their joining sides on top.

Figure 19

1 about flush, 2 jointing mark on top, 3 put closely together, 4 parallel to each other, 5 saddle timber

Proceed with scribing as follows:

1. Scribe the shortening at the left end on the front edge of the post at the front, place the square with the long leg and scribe the section line over all posts put on the trestles.
(Go to the right only as far as necessary to produce a right-angle section on all posts).

2. Measure-in the tenon length, the post length and the second tenon length at the front edge of the post at the front, startening from the left section line towards the right.
(Just mark the measured sizes).

3. Place the square with the leg at the post at the last right-hand marking, scribe the section line over all posts put on the trestles and mark it.

4. Check the size between the sections.
(If the sizes are not identical, find the reason and make the necessary corrections).

5. Scribe over all posts put on the trestles all marking made at the front edge of the post placed at the front.
(Make sure that the long leg of the square is placed correctly).

6. Scribe the tenon parapets.
For this purpose, the posts are to be moved apart to enable the marking gauge to be handled between them.
Starting from the joining side, the front parapet is scribed first and then the rear parapet is scribed at the left ends of the posts in the same manner.
The work flow is shown in Fig. 20 and Fig. 21.

Figure 20

Figure 21

If more posts than those placed on the trestles are to be scribed, the post placed at the front is to be used as template!

Why is the post at the front to be used as template?

______________________________________

Scribing of the stiffening transoms

Scribing of the stiffening transoms is to be done in the same manner as scribing of the posts but with different length sizes. Tenon lengths of 15 mm are sufficient so as not to weaken the cross section of the posts excessively.