Determine the dead load - sewer construction, Mechanical Engineering

Assignment Help:

Determine the dead load:

A 250 mm diameter sewer is placed in a 2.75 m deep rectangular trench that is 0.65 m wide. This trench is backfilled with saturated clay having a unit weight of 20.4-kN/m3. Determine the dead load due to the backfill that the sewer must support. What class of bedding is to be specified if the crushing strength of this pipe is 23.2 kN/m, and the value of safety factor to be used is 1.5?

Solution

Here,  H = 2.75 m - 0.25 m

= 2.50 m

∴ H/B = 3.85

From Figure 6.16, we read C = 2.65

We have W = 2.65 × 20.4 × (0.65)2 = 22.84 kN/m

Safe Supporting Strength = (Load Factor × Crushing Strength)/Safety Factor

Load factor = 1.48

Therefore, we specify Class C bedding for the given sewer line.


Related Discussions:- Determine the dead load - sewer construction

Compare two stroke with four stroke engine, Compare Two Stroke with four st...

Compare Two Stroke with four stroke Engine: T w o Stroke Engine In two stroke engine all the four operation that is suction, compression, ignition and exhaust are compl

Beam, Beam: What do you mean by Beam, and Shear force and bending mom...

Beam: What do you mean by Beam, and Shear force and bending moment diagrams? Sol.: A beam is structural member whose longitudinal dimensions (that is width) is large co

Show general properties of castings, Q. Show General Properties of Castings...

Q. Show General Properties of Castings? 1. Fe-Cr (10-30%Cr) alloys offer good resistance to oxidation, low strength at elevated temps, restricted to use in oxidizing or reducin

MRP 1, Advantages and disadvantages

Advantages and disadvantages

Find out the recoil-velocity of the gun, Find out the recoil-velocity of th...

Find out the recoil-velocity of the gun: As shell of mass 200 gm is fired at a velocity of 50 metres/second by a gun of mass 20 kg. Find out the recoil-velocity of the gun.

Instantaneous stress formula, Ask quesinstantaneous stress formulation #Min...

Ask quesinstantaneous stress formulation #Minimum 100 words accepted#

What is the mean of off time, Q.What is the mean of Off time? It is the...

Q.What is the mean of Off time? It is the interval from the end of the hold time to the beginning of the squeeze time for the next (resistance) welding cycle. In automatic m

Determine the heat rejection, In an engine working on Diesel cycle inlet pr...

In an engine working on Diesel cycle inlet pressure and tem are 1 bar and 17 o c respectively. Pressure at the end of adiabatic compression is 35 bar. He ratio of expansion i.e. af

Hot service insluation thicknesses, Q. Hot Service Insluation Thicknesses? ...

Q. Hot Service Insluation Thicknesses? Hot Service Insluation Thicknesses are specified based on the following design criteria: • Average Annual Climatic Conditions:

THERMAL, HOW HEAT TRANSFER TAKES PLACE

HOW HEAT TRANSFER TAKES PLACE

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