Determine the dead load - sewer construction, Mechanical Engineering

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.

Posted Date: 1/22/2013 6:27:31 AM | Location : United States







Related Discussions:- Determine the dead load - sewer construction, Assignment Help, Ask Question on Determine the dead load - sewer construction, Get Answer, Expert's Help, Determine the dead load - sewer construction Discussions

Write discussion on Determine the dead load - sewer construction
Your posts are moderated
Related Questions
Operating characteristics of the valve is nonlinear (Fig.), a cascade controller established to reduce the effect of this. Both controllers are proportional controllers. TC has

how bike''s hydraulic shock absorbers work?


Disc Type Brake:  As shown in Figure the disc brake consists of a pearlitic grey cast iron disc bolted to the wheel hub and a stationary housing called caliper. Casting in tw

Define the difference modes of Heat Transfer with examples. State one system where Heat Transfer takes place because of all modes of Heat Transfer.

The following specification is used for the design of a flanged coupling between two coaxial shafts: Speed: 650rpm Power transmitted: 550 kW Bolt Diameter: 12 mm Pit

Q. Which functions used for coating? • Improves arc stability by providing certain chemical which have this ability, by ionizing the path of arc. • Provides a protective gaseou

Calculate the whole reaction at block: A bar weighing 1 kg/m is bent at right angles into segments 0.60 m and 0.30 m long. It takes the position illustrated in Figure, while t

engineering dynamics problems of kinetics of particle

what is the maximum principle stress