Vets, Candidates, Hopefulls & Spectators,
I just came across an interesting situation while doing practice problems in the Lindeburg book. I was asked to find a diameter on a primary clarifier. I used a surface loading value given in Metcalf & Eddy's Wastewater Engineering text, 2003, a reference book highly suggested for the exam. It suggested using a value of 1500 gal/day-ft. Using this yeilded option A (43 ft). Going to the solution, Lindeburg (arbitrarily?) suggests we use 1000 gal/day-ft. of course this yeilded option B (56 ft).
I wouldnt want an instance where my solving procedure is dead-on, but I get the question wrong because of conflicting reference values.
Since I'll be taking multiple texts with me to the exam, which reference would you trust? Lindeburg or OTHER?
Please advise.
P.S. its about a 23% difference in answer values.
I just came across an interesting situation while doing practice problems in the Lindeburg book. I was asked to find a diameter on a primary clarifier. I used a surface loading value given in Metcalf & Eddy's Wastewater Engineering text, 2003, a reference book highly suggested for the exam. It suggested using a value of 1500 gal/day-ft. Using this yeilded option A (43 ft). Going to the solution, Lindeburg (arbitrarily?) suggests we use 1000 gal/day-ft. of course this yeilded option B (56 ft).
I wouldnt want an instance where my solving procedure is dead-on, but I get the question wrong because of conflicting reference values.
Since I'll be taking multiple texts with me to the exam, which reference would you trust? Lindeburg or OTHER?
Please advise.
P.S. its about a 23% difference in answer values.