A) draw the stres-strain diagram for a typical steel bar under tensile test showing all details of the results of the test.

B) A material like aluminium does not have an abviouse yield point and undergoes large starin after the proportionality limit draw the sketch to show how the arbitrary yield stress is determined.
C) ASteel sample of diameter 30mm and guage length 60mm gave under tensile test the following results.
a) load at limit proportionality 70,000N and the extension 0.045mm.
b) load at yield 80,000N.
c) maximum load 130,000N
the two parts where joined together after being broken.the length between guage points was found to be 80mm and the diameter at the neck 20mm calculate:-

1) the modulus of elasticity E?
2) the stress at the limit proportionality?
3) yield stress?
4) ultimate limit stress?
5) percentage elongation?
6) percentage cinstruction?

Diagram and describe the difference between a ceiling that is attached to the building structure and one that is suspended
from the building structure.

Write a detailed note on Richter and Mercalli intensity scale of earthquake. Also draw comparison between both. Plagirism is must be less than 15%.

Based on jar test results, 51 mg/L of alum is used to coagulate a sample containing 114 mg/L suspended soids. How many mg/L as CaCO3 of natural alkalinity are consumed? What is the mass rate of sludge generated if suspended solids are reduced to 10 mg/L? Assume Al(OH)3 is precipitated (EW=26.0 mg/meq). The plant treats 100,000 gpd.

Mechanical and electrical systerms for construction managers.

1. What are the different components of a water heater and what are they for?
2. What are the advantages of an in – line water heater?
3. What are stack vents for?
4. Discuss two or more reasons for venting a plumbing system.

Describe a “windrow” and its purpose in mining.

Three types of steels used to manufacture reinforcement bars? rail, Axle and billet

i need a Definition for each term and Example

1- ecological footprint

2- ecological rucksack

3- biomimicry

How are the density-time measurements in a hydrometer translated into grain size percentage-passing data?

A Simply supported rectangular, tension-reinforced beam is to be designed for dead load of 0.75 k/ft plus self weight and service live load of 2.0 k/ft, with a 30 -ft simple span. Material strength will be fy = 60 ksi and fc = 5 ksi for steel and normal weight oncrete respectively.

Startthe design of the beam dimensions using the rules of thumbs in class. The total beam depth, h, must not exceed twice the width.

Calculate the required beam dimensions and tensile steel requirement (As required) to carry the Maximum moment found at mid span. Start with a steel ratio of half of "usable rho" in Table 27.2 in the text. Use ACI load factors and strength reduction factors. The effective depth (d) may be assumed at 3 inches less than the total depth (h).

Draw a sketch clearly showing spacing, cover, and bar locations.

What is the consequence of SCM on the heat of hydration?

Applications of higher order differential equations

A spring has one of its ends fixed, and a force of 15 N stretches it 20cm. A mass of 4 Kg is attached to the end of the spring, and the system is set in motion with initial position = 60 cm and initial velocity = 1.5 m/s.

(a) Find the spring constant. 
(b) Write a problem of initial conditions for spring stretching, in meters. 
(c) Solve the problem posed in (b). 
(d) Write the solution in the form x = rsen(ωt + θ). 
(e) What are the amplitude, frequency and period of movement?