Core TradesQuestion 215 of 700
A sewer line drops 2.5 feet in elevation over a horizontal length of 250 feet. What is the slope expressed as a percentage?
a.1 percent
b.2.5 percent
c.10 percent
d.25 percent
Explanation
Slope percentage = (rise or drop / run) x 100 = (2.5 / 250) x 100 = 1 percent. 2.5 percent ignores the 250-ft run, 10 percent misplaces a decimal, and 25 percent divides incorrectly.
Practice all 700 questions free — no signup required.
Related questions on this topic
- A radiant barrier installed in an attic reduces summer heat gain PRIMARILY by:
- A wall assembly has a total thermal resistance of R-20. What is its approximate overall U-factor (heat-transfer coefficient)?
- A trench measures 90 ft long, 3 ft wide, and 4 ft deep. How many bank (in-place) cubic yards of soil must be excavated?
- A Proctor compaction test is performed on a soil PRIMARILY to determine its:
- To drain surface water away from a building, finished grade should generally fall a MINIMUM of how much within the first 10 feet from the foundation?
- On a grading plan, a marked 'cut and fill' stake set by the surveyor PRIMARILY tells the operator:
Last reviewed: · editorial process
PrepPass Editorial Team · Verified against California CSLB General Building (B) Trade Examination · How we review