Fig. 48

[Fig. 48] shows a raking shore in its simplest form, but usually two or more shores are used (see [fig. 49]).

The following table from Mr. Stock’s book[1] shows the general rule and also the scantlings to be used:

For walls from 15 to 30 feet high2 shores are necessary in each system
For walls from 30 to 40 feet high3 shores are necessary in each system
For walls from 40 feet high and upwards4 shores are necessary in each system

Fig. 49.—Example of Raking Shore

Taking the angle of the shore at from 60 to 75 degrees:

For walls from 15 to 20 feet high 5 in. by 5 in. may be the scantling for each shore

For walls from 20 to 30 feet high 6 in. by 6 in. may be the scantling for each shore

For walls from 30 to 35 feet high 7 in. by 7 in. may be the scantling for each shore