Figure 1 - Selecting an appropriate specification
If the estimator does not make any selections in the Automatics area, the software would not know what calculations to make with respect to couplings (Joints), supports (Hanger) or whether to include a ground conductor (Ground Wire).
Assume the estimator takes off a 115" run of 2” EMT raceway (see specification selection in Figure 1) with (4) #3/0 THHN and a #4 THHN ground. If no automatics have been included the results would be the raceway, the connectors, elbows and the 3/0 cable. No instruction was given to include couplings, supports or ground wire.
Figure 3 - Results of takeoff described above
If the same feeder is entered with the required automatics included, and an appropriate support method selected, the results would be more complete.
Figure 4 - Automatics and support method selected
By changing the hanger attributes and taking off the same feeder a different set of material will be produced.
Figure 6 - Different support method selected (compare to Figure 4)
Figure 7 - Compare to the material in Figure 5 for a 1-Hole Strap on Concrete takeoff
Finally, a different set of materials could be produced if the wiring method were changed - from the original EMT raceway to an RMC raceway specification. (Right-click the line of takeoff and choose; Change Breakdowns & Attributes as shown in Figure 8.)
Figure 9 - Wiring Method changed by selecting a different specification
Figure 10 - Support method changed from T-Rod from Concrete
Figure 11 - Results for the RMC feeder supported with threaded rod from a steel structure
Each of these feeders are a 115" run of 2” raceway with (4) #3/0 THHN and a #4 THHN ground.
By selecting appropriate attributes, the estimator will produce the correct materials with respect to type of raceway, and therefore the proper termination materials and adequate support materials based on the structure.