Grades on PnP Sheets divisible by 4...
Grades on PnP Sheets divisible by 4...
(OP)
I was wondering why certain engineering conventions require profile grades on plan and profile sheets to be divisible by 4?
The explanation given to me was that they are easier to do field calculations on but I can't think of a time when you'd be dividing a grade by 4 in the field.
Thanks for any help.
The explanation given to me was that they are easier to do field calculations on but I can't think of a time when you'd be dividing a grade by 4 in the field.
Thanks for any help.





RE: Grades on PnP Sheets divisible by 4...
RE: Grades on PnP Sheets divisible by 4...
RE: Grades on PnP Sheets divisible by 4...
RE: Grades on PnP Sheets divisible by 4...
B+W Engineering and Design
Los Angeles Civil and Structural Engineering
http://bwengr.com
RE: Grades on PnP Sheets divisible by 4...
2:1 is as steep as we go around here, and that's with serious stabilization measures. 3:1 is standard for simple seeding. 4:1 is standard in Florida for sandier soils. Only one of these is divisible by four.
?
Hydrology, Drainage Analysis, Flood Studies, and Complex Stormwater Litigation for Atlanta and the South East - http://www.campbellcivil.com
RE: Grades on PnP Sheets divisible by 4...
RE: Grades on PnP Sheets divisible by 4...
RE: Grades on PnP Sheets divisible by 4...
Survey stakes may need to be set every 25 feet, so the math is easier if there is an even difference every 25 feet, such 0.61' for the 2.44% slope.
RE: Grades on PnP Sheets divisible by 4...
This was right around the on-set of ACAD becoming a common design tool. Over the last 15 years all designers and surveyors moved into CAD and I rarely see a surveyor calc anything by hand anymore. So, as a a designer, I see no point in rounding numbers like I used to 10-15 years ago.
RE: Grades on PnP Sheets divisible by 4...