What do you mean by laying of apron in design of bridge, Civil Engineering

Assignment Help:

Q. What do you mean by Laying of apron in design of bridge?

Width of apron laid on river bed should be 1.5 D1 where D1 is estimated scour depth in metres below river bed. Thickness of apron as laid can be worked out as quantity of apron stone/ width of apron laid and works out to 1.5 T1 where T1 is the thickness of apron after launching. The thickness at the head should be increased to 2.25 T1 and checked up to verify whether the quantity is adequate for fanning out. If not, the thickness should be increased further as required.


Related Discussions:- What do you mean by laying of apron in design of bridge

Integration of the strain settlement, All soils subjected to stress undergo...

All soils subjected to stress undergo strain. This will be taking place within the soil skeleton. This strain is caused by rolling, slipping, sliding and crushing at the particle c

Calculate the total passive earth resistance on the wall, A  retaining wall...

A  retaining wall, 4.5 m high, retains a soil with  c = 2 N/cm 2 ,  φ = 30° and g = 20 kN/m 3 , with horizontal surface level with the top of the wall. The backfill carries a surch

Chain survey, Instruments used in chain survey

Instruments used in chain survey

Explain the unit hydrograph method, Q.- Explain the Unit hydrograph Method ...

Q.- Explain the Unit hydrograph Method for estimation of peak flood discharge in a river. Ans.- Unit hydrograph Method A hydrograph is a representation of hydraulic cha

Show the overlays on concrete bridge deck, Q. Show the Overlays on concrete...

Q. Show the Overlays on concrete bridge deck? After years of servicing, some overlays can be applied on the top surface of bridges. Overlays on concrete bridge decks achieve th

Explain the purpose of embedding puddle flange, Purpose of embedding puddle...

Purpose of embedding puddle flange inside the walls of closed valve chambers When valves are closed to stop water flow in a pipeline, a thrust is produced along the direction o

State the design process of prestressed concrete, State the Design process ...

State the Design process of Prestressed Concrete Most of the times, the design process is an interactive and trial procedure in which the cycle of analysis - design - analysis

Wall method of estimation, 1. Can you enumerate the benefits of individual ...

1. Can you enumerate the benefits of individual wall method of estimation? 2. Estimate the single room of size 3m x 4m x height 3m  using individual wall method? 3. Which met

Shallow foundations, The drainage system of a cantilever wall shown in Figu...

The drainage system of a cantilever wall shown in Figure As 1 became blocked after a heavy rainstorm and the groundwater level, which was originally below the base, rose to1.5 (m)

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