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
Classification Based on Type of Welding  Fusion welding : These processes involve fusion of the base metal to complete the weld. Fusion welds generally  do  not  require  thea


How is angle of dispersion used in footing? Angle of Dispersion Indian Standards (IS) has specified relation for determining the angle, of dispersion. According to IS the an

Slip of belt: Sol:   When the driver pulley rotates, it carries belt, because of a firm grip between its surface and belt. The firm between pulley and belt can be obtained by

diffrence between actual and idealactual vapour compression cycle

Q. Soil conditions for plant layout? Soil conditions affect the foundation requirements, drainage, type of substructure used and may limit the size and shape of the facility. T

Complete outer clutch lugs for deep cuts: Visually check for any deep cuts formed on the outer complete clutch lugs.

types of compressor used in super chasrger

Calculate the maximum and minimum stress: A cast iron column of 200 mm diameter carries a vertical load of 400 kN, at a distance of 50 mm from the centre. Calculate the maximu

If Motorcycle Starts but Stops Suddenly Causes of Problem Remedy The spark plug gets short-circuited by heating