AFTER WEDGES HAVE
BEEN DRIVEN HOME,
CUT BLOCKS OF 2 X 4
CUT THEM OFF ALONG
TO FIT THE GAP AND
TAP THEM IN SNUGLY
Figure 8-20. Locking wedges in place.
A shore is a portable beam, a wedge is a
battens to build mock-ups and models to scale.
Although models are not as effective for training as
block, triangular on the sides and rectangular
actual practice shoring jobs, they do have some
on the butt end, and a shole is a flat block that
training effect. An important advantage of models is
may be placed under the end of a shore to
that you can work out some rather elaborate shoring
problems with them. Also, the models can be kept and
used again and again for training purposes.
After the shoring practice has been completed
(whether using a model or full-size shores), it is a good
A strongback is a bar or beam of wood or
idea to have the shoring detail personnel discuss the job
metal that is used to distribute pressure or to
and make comments on the good and bad points of the
serve as an anchor for a patch. The
shoring. Some of the questions to be brought up in this
discussion include the following:
strongback is often shorter than a shore.
Is the shoring job effective?
Could it be made just as effective with fewer
What is the fully extended load for the model
Should more shores have been used?
6-11 steel adjustable shore?
Is the shoring pressure correctly spread?
Is the wedging done correctly?
This type of questioning and discussion can be
effective as a device for making sure that everyone
i nvo l ve d r e a l l y u n d e r s t a n d s t h e p r o b l e m s a n d
principles of shoring.
A steel wedge is considered more valuable as
a prying tool than for actual shoring.
Which of the following woods are best to use
for the construction of shores?
The most rapid and accurate way to measure
Walnut and pecan
a shore for cutting is to use an adjustable
Balsam and spruce
Douglas fir and yellow pine
Redwood and birch