| Tweet |
Custom Search
|
|
|
||
 TM 55-1905-223-SDC
Section V. PREPARING SHORING MATERIAL
7-7. LENGTH OF A SHORE. In use, the lengthofashoreshouldneverbemorethan30 times its minimum
thickness; therefore, a shore that is 4 by 6 inches should not be longer than 10 feet. The shorter the shore is
in relation to its thickness, the greater the weight it will support.
7-8. MEASURING AND CUTTING SHORES USING A BATTEN. The most rapid and accurate way to
measure shores for cutting is by using an adjustable shoring bat- ten. An adjustable shoring batten, such as
the one shown in FIGURE 7- 1 can be made from materials aboard the vessel. To use the shoring batten,
extend it to the required length and lock it with the thumbscrews on the length locking device. Measure the
angles of cut by adjusting the hinged metal pieces at the ends of the batten, and lock the angle locking device
in place. Lay the bat- ten along the shore, and mark and cut the timber to the proper length and angle.
Shores should be cut 1/2 inch shorter than the measured length to allow space for wedges.
Adjustable Shoring Batten.
7-9. MEASURING AND CUTTING SHORES WITHOUT A BATTEN. If a shoring batten is not available,
measure the shores for length by using a folding rule or a steel tape and a carpenter's square, as follows:
a. Measure distance A (FIGURE 7-2) from center of strong back to deck. Then, measure distance B
from edge of anchorage to bulkhead, subtracting thickness of strong back.
|
||
|
||
