Define black and white fathometer - non-destructive testing, Civil Engineering

Assignment Help:

Define Black & White Fathometer - Non-Destructive Testing?

Most commonly used sounding device is black & white fathometer. The units are compact and easy to use. They consist of a transducer, which is suspended in the water, a sending/receiving device, and a recording chart, which displays the depth on paper. High frequency sound waves, generally in the range of 200 kHz, emitted from the transducer travel through the water until they strike the channel bottom and are reflected back to the transducer. The fathometer measures the time it takes the sound waves to return to the transducer, and converts that time to the depths of water, which are displayed on a graphic recorder in the form of a continuous plot of the channel bottom.


Related Discussions:- Define black and white fathometer - non-destructive testing

Types of pavements, Types of Pavements: On the basis of structural pe...

Types of Pavements: On the basis of structural performance of pavements, there are basically two types of pavements: (a) Flexible, and (b) Rigid. A flexible pavement

Cargo handling facilities, Cargo Handling Facilities: All water transp...

Cargo Handling Facilities: All water transport terminals require cargo handling facilities. Cranes of various sizes are used. In docks, traveling cranes are popular (Figure).

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

Determine the active thrust on the wall, A retaining wall 9 m high retains ...

A retaining wall 9 m high retains granular fill weighing 18 kN/m 3 with level surface. The active thrust on the wall is 180 kN per metre length of the wall. The height of the wall

Define the alternate depths - hydrologic system, Define the Alternate Depth...

Define the Alternate Depths In open channels, two alternate depths of flow have the same energy for the same flow rate. As shown in the figure, the hyperbolic plot of energy (x

Dynamical method of earthquake force analysis, Earthquake force analysis me...

Earthquake force analysis method Dynamical method In contrast with the static loading, dynamical analysis method is discussed. In this method, structure reflections at any poin

Maintenance of airport pavements, Maintenance of Airport Pavements: ...

Maintenance of Airport Pavements: Maintenance Elements The maintenance of airport pavements is an important task of a civil engineer, since the safe movement of aircr

Write short notes on numerical rating of bridges, Q. Write short notes on N...

Q. Write short notes on Numerical rating of Bridges? In the numerical rating system, the condition of a bridge is represented by a number consisting eight digits. This eight di

Upper floor, We need all types of Upper floor

We need all types of Upper floor

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