Example:
The pipe is laid correctly when the rod reading “A” minus rod reading “B” equals the rise
according to the engineering plans.
Feet / Tenths Metric
Rod Reading at “A” 15.74 feet 4.801 m
Rod Reading at “B” 12.289 feet 3.749 m
Rise or Difference (A – B) 3.451 feet 1.052 m
Distance from A to B 145 feet 44.196 m
Rise divided by Run 0.0238 0.0238
Rise divided by Run times 100
= Laser Setting
2.38% 2.38%
Rise according to engineering
plans
(2.38% * 145 feet)
= 3.451 feet
(2.38% * 44.196 m)
= 1.052 m
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