covered in step 11. The solution to this problem is found at the end of the lesson. Determine

the tie-wire spacing (in inches) if the uniform load is 756 pounds per linear foot and 2- x 4-

inch double wales are used.

A.

30

B.

43

C.

46

D.

72

wire spacing based on the tie-wire strength by dividing the tie-breaking strength (step 12) by

the ULW (step 10). Compute as follows:

If the strength of the tie wire is not known, refer to *Table 5 *for the minimum breaking

load for a double strand of wire.

If the answer contains a decimal, round down to the next lower whole number. For

example, for 11.4, use 11 or for 12.7, use 12.

8

1,700

9

1,420

10

1,170

11

930

12 1/2

950

13*

660

13 1/2

950

14

650

15 1/2

850

Snap ties

3,000

Pencil rods

3,000