Sub-surface drainage, Civil Engineering

Assignment Help:

Sub-surface Drainage:

Sub-surface drainage is intended to take away the water seeping through the pervious layers of the soil, causing a high water table, or in cut slopes of hills. The arrangement usually consists of a trench, at the bottom of which is laid a perforated or porous pipe. The trench is filled with stone aggregates. Figure shows a sub-surface drain in a hill slope, which drains away the water and prevents landslides and slips. Figure shows a sub-surface drainage system for lowering the water table.

741_Sub-surface Drainage.png

Figure : Subsurface Drain at Cut Slopes

1918_Sub-surface Drainage1.png

Figure : Sub-drains for Lowering Ground Water Table


Related Discussions:- Sub-surface drainage

Design of steel lug angles with channel sections.., while designing the lug...

while designing the lug angles with the channel section what does "the force not acccounted for by the direct connection of member" mean?

Surveying, describe the two fundermental purposes of surveying

describe the two fundermental purposes of surveying

Impact test - tests on stones, Impact Test: Resistance of stones to ...

Impact Test: Resistance of stones to impact is found by conducting tests in impacting testing machine .It contain of a frame with guides in which a metal hammer weighing 13.

Hazard, • A potential source of harm - Mechanical hazard - Electrical...

• A potential source of harm - Mechanical hazard - Electrical hazard - Cutting hazard - Toxic hazard - Fire hazard - Explosion hazard

Determine the head added by the pump, Primary effluent wastewater at 60 o F...

Primary effluent wastewater at 60 o F (v = 1.217 x 10 -5 ) is pumped to the top of a trickling filter (TF) a total of 75 vertical feet through schedule-40 welded steel pipe. The fl

Wearing course or additional thickness be designed on piers, Question S...

Question Shall layer of wearing course or additional thickness be designed on surface of piers ? Answer In designing of piers , considerations have to be given to

Explain the national primary drinking water standards, Explain the National...

Explain the National Primary Drinking Water Standards Safe Drinking Water Act (SDWA, 1974) required EPA to establish maximum contaminant levels (MCLs) for public water systems

Explain the statements about the differential levelling, Explain the Statem...

Explain the Statements about the Differential Levelling I.  Bench mark (BM) - relatively permanent point of known elevation as indicated on the Contract drawings  II. Back s

Define steel substructure - underwater inspection of bridge, Define Steel s...

Define Steel substructure - underwater inspection of bridge? Steel is used as a structural material and as external protective cladding on concrete foundation elements. Steel f

Higway engineering, Ask question Design the pavement by group index method ...

Ask question Design the pavement by group index method for heavy traffic using following subgrade data Soil passing 75micron sieve =65%,liquid limit =40%plastic limit =20% #Min

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd