Design a sanitary branch sewer, Civil Engineering

Assignment Help:

Q. For what capacity would you design a sanitary branch sewer to serve a section having a population of 12500 persons with a rate of supply of 135 Liters.

Ans.- Average flow equals - 12500 x 135 = 1692500 Liter / day.

                                              = 1692500 / 24 x 60 x 60 = 19.6 Liter / sec.

Making allowance for variation max 3 time of Qty for intensity of flow -

19.6 x 3 = 58.8 Liter / sec. = 0.06 cum / sec.

But this quantity represents only 2/3rd fill there fore full capacity of sewer

= 1.5 x 0.06 = 0.09 cum / sec      for which the section is designed

Assuming a velocity of 1.00 m / sec.    ,     A = Q / V  = πD2 / 4 V ,    D2 = 4 Q / πV

D = √ 4 Q / πV = √ 4 x 0.09 / 3.14 x 1.00 =  0.34 m.

A sewer of 350 mm dia could be used.


Related Discussions:- Design a sanitary branch sewer

Define recommendations for confined elastomeric pad, Define Recommendations...

Define Recommendations for confined elastomeric pad?  (a) Permissible limits for confined pressure on elastomer pad depends upon effectiveness of internal seal preventing it fr

Reinforced Concrete Design, Design a continuous one-way solid slab supporte...

Design a continuous one-way solid slab supported on beams spaced at 4.2m o.c. the width of the beam is 300mm, leaving clear slab spans of 3.9. The slab carries a uniform DL= 6 KPa.

Shear slump and collapse slump in slump tests, Question What is sign of sh...

Question What is sign of shear slump and collapse slump in slump tests? Answer There are three varieties of slump that might occur in slumps test, specifically, slump, shear

Curved surface profiles, Question Why is concrete profile barriers plan...

Question Why is concrete profile barriers planned with curved surface profiles ? Answer Safety fencings are designed to include vehicles in carriageway in that they a

Determine the grade rod reading at station, A section view of a proposed ro...

A section view of a proposed roadway is shown in Figure 1 with an existing grade point elevation of 100-ft. The proposed roadbed finish grade elevation at station 50+00 is 95.00-ft

Load transfer mechanism, Question What is load transfer mechanism for p...

Question What is load transfer mechanism for paving blocks in pedestrian footway? Answer In Hong Kong, footway is as a rule designed with paving slabs or interlocking b

Complete embedment of pipelines into thrust blocks, Q. Complete embedment o...

Q. Complete embedment of pipelines into thrust blocks For unreinforced concrete thrust blocks in bends and tees for pressurized pipelines, it's recommended that contact surfac

Finite Element Method formulation, 1. [6 marks] Treating the bar illustrate...

1. [6 marks] Treating the bar illustrated above as being a one dimensional axial bar where plane sections remain plane and parallel, analyse the bar using the Galerkin finite eleme

M, symbols of electrical layout

symbols of electrical layout

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