Difference surface and subsurface degradation
Answers
★彡 ʜᴇʀᴇ ɪs ʏᴏᴜʀ ᴀɴsᴡᴇʀ 彡★
SURFACE DRAINAGE
▶️ components:
▶️ cross slope or camber
▶️ road side drains
▶️ cross drains eg. culvert
▶️ design aspects:
Hydrologic analysis: estimation of quantity of run-off flowing into the drain
Q=c*i*A
Q=run-off ,cumecs
c=run-off coefficient =ratio of run-off to the rate of rainfall
A=drainage area in 1000 square meter
i=intensity of rainfall, mm/s
2.Hydraulic analysis:
Q-Av
A=area of cross section
v=velocity (by manning formula)
SUBSURFACE DRAINAGE
Lowering of water table: highest level of water should be below the sub-grade.
Control of seepage flow: longitudinal pipe drain is trenched if the seepage zone is at the depth less than 0,6 to 0.9m from the subgrade.
Control of capillary rise: by lowering the water table it can be prevented
design aspects:
proper filter material should be used to have sufficient permeability offering negligible resistance to the flow.
ᴇʜsᴀss ★
Explanation:
(☞ﾟ∀ﾟ)☞ANSWER ❣️❤️❣️
The Microsoft Excel MAX function returns the largest value from the numbers provided. The MAX function is a built-in function in Excel that is categorized as a Statistical Function. It can be used as a worksheet function (WS) in Excel.