Landscaping License Practice Test

How many stakes are needed when setting forms for a 28-ft long concrete walkway if the stakes are spaced 16 in o.c.?

1. 36 stakes

2. 40 stakes

3. 44 stakes

4. 48 stakes

The correct answer is: 44 stakes

To determine how many stakes are needed for a 28-foot long concrete walkway with the stakes spaced 16 inches on center, it's important to first convert the length from feet to inches since the spacing is given in inches. There are 12 inches in a foot, so a 28-foot walkway is equivalent to 28 x 12 = 336 inches. Next, we need to calculate the number of stakes required. If the stakes are to be placed 16 inches apart, we divide the total length of the walkway by the spacing distance. Performing the calculation, 336 inches divided by 16 inches results in 21 gaps between the stakes. However, since stakes are placed at both ends of the walkway, we must add one additional stake. Therefore, we need 21 (the gaps) + 1 (for one end) = 22 stakes. Next, consider the placement of stakes. Typically, when setting forms, stakes are placed at each joint or where forms meet, and stakes are generally placed at the beginning and end of the form, with additional stakes along the length to ensure stability and accuracy of the form dimensions. Now, if we are measuring this in "on center" spacing, towards the completion of a calculation, rounding