Exercise 1 — Trench Calculator

In this exercise, you will practice using the Trench Calculator to take-off piping and bedding materials. Complete the following steps:

1. In the Training Job, create a new cost item called Underground Pipe.

2. Give the cost item a quantity and unit of measure of 1640 Linear Feet.

3. Open the new cost item and open the Trench Calculator.

4. On the Trench tab, enter the variables for the trench:

   Trench length	1000 feet
   Trench width (at bottom)	4 feet
   Trench depth	10 feet
   Hinge elevation	5 feet
   Backslope	45 degrees
   Material swell/shrinkage factor	0.10 (decimal)

   • Do NOT check the box to bring in volume shrinkage.

5. Select the MPR36 material resource from the drop-down Results list.

6. On the Beddings tab, enter bedding variables.

   Bedding lift 1
   Elevation (from trench floor)	6 inches
   Additional material needed to compensate for compaction	5.00%
   Conversions factor (Ton per CY)	1.3
   Bedding material resource (Tons)	MASAND

   Bedding lift 2
   Elevation (from trench floor)	38 inches
   Additional material needed to compensate for compaction	5.00%
   Conversions factor (Ton per CY)	1.1
   Bedding material resource (Tons)	MAFA

   Bedding lift 3
   Elevation (from trench floor)	76 inches
   Additional material needed to compensate for compaction	5.00%
   Conversions factor (Ton per CY)	1.1
   Bedding material resource (Tons)	MACA1-1/2

7. Select OK and confirm that the pipe material and bedding materials populated the cost item.

You should end up with the following results

Congratulations, you have completed this exercise!