B3C14 Structural Mechanics In Construction And Civil Engineering Assessment Answer

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Question :

Assignment brief
QualificationLevel 3 BTEC
Diploma in Construction and the Built Environment
Unit number and titleB3C14 Structural Mechanics in Construction and Civil Engineering

Assignment titleStructural Mechanics in Construction and Civil Engineering
The purpose of this assignment is to:
The purpose of this assignment is to help students develop a skill or understanding of the behavior of structural members under load. We will mainly focus on the beam, column and retaining wall. Also effort will be put in order to help the students to understand the use of hand calculation and computer in the area of analysis of structural elements.
Scenario
You are the assistant design engineer and you want to enrich your structural mechanics knowledge in both construction and design work. Also you have faced certain knowledge as shown below and would like to find out the answers and solutions based on the knowledge in lecture notes, lessons, books, websites, etc.
Task 1
A simply supported beam rests on two columns is subject to a downward point force in the center position of the beam, explain the general behavior of beams and columns with the aids of diagrams. You should include how the force is transferred from the beam to the columns.
This provide evidence for P1
Task 2
A simply supported beam is loaded with a point load of P kN in the center position of beam and w kN/m uniformly distributed load along the beam respectively, plot the shear force diagram and bending moment diagram respectively. Determine the reaction forces at each end of the beam. The value of the point load P will be given by the tutor.
This provide evidence for P2
Task 3
When a cantilever beam with fixed end support, with effective length of 4m, is subject to a point load of 5kN at the end and 1 kN/m uniformly distributed load along the beam, plot the bending moment and shear force diagram for a cantilever beam. Determine any reactive shear forces.
This provide evidence for P3
Task 4
State the possible assumptions when we design a rigid frame with several floors so that it will be handled by hand calculation. You may assume a 1m x 1m square frame is subjected to a point load P kN at the node, then calculate all the forces using mathematical and graphical techniques.
This provide evidence for P4
Task 5


When the column size is 300 mm x 900 mm is subject to an axial force of 60 kNm, calculate its maximum stress.
When the same column is subject to a point load 10kN which is 30 mm away from its centroid of plane surface, find the maximum stress now introduced.

This provide evidence for P5
Task 6
When the column is axially loaded with a point load of 5000kN, determine the size of a column to support this axially loaded point load, assuming the column is rectangular in shape.
When a column is axially loaded with 4500kn determine a suitable section size for the column which has to be square in shape.
This provide evidence for P6
Task 7
When a simply supported beam, with effective length of 3m, is subject to a combined loading of a uniformly distributed load of 1kN/m and a point load of 2 kN at the center position of the beam, find the possible of the depth of the beam and suggest its breath in this case.
When a simply supported beam, with effective length of 6m, is subject to a combined loading of a uniformly distributed load of 5kN/m and a point load of 20 kN at the center position of the beam, and 45kn at 3 metres from the left support, find the possible of the depth of the beam and suggest its breath in this case.

This provide evidence for P7
Task 8
Suggest a possible breath of mass concrete retaining wall, with height 1m, is founded in soil. The founding soil has density of 19 kN/m3, with friction angle of 30 degree and Young Modulus of 20000 Nmm-2. It is to be used to withstand active pressure soil with dry density of 16kN/m3only, under the factor of overturning, sliding, bearing capacity and settlement produce a suitable section that will be safe in these conditions.
This provide evidence for P8
Task 9
As a junior engineer within your structural design office you have been asked to provide the following for a client presentation
“Explain the benefits of using computer software in structural analysis and design”.
This provide evidence of P9
Task 10
Please explain the significance of contraflexure? How does it relate to the bending moment diagram? How does the value of bending moment behave when shear force is equals to zero?

This provide evidence of M1
Task 11
An architect is considering several different restrains for columns in their design.
Explain, with appropriate calculations and diagrams, how the effective length of column is determined under different restraint conditions

This provide evidence of M2


Task 12
British Standards set a bench mark for design. Select one other appropriate method and compare this with a British standard for designing structural members

This provide evidence of M3
Task 13
Compare by stating the advantages and disadvantages of using hand calculation to solve the values of shear forces and bending moments. Compared with the graphical representation and numerical methods of solving forces in framework of British Standard.
This provide evidence of D1
Task 14
Evaluate the methods of using spreadsheet, hand calculation or computer for the analysis of structural members in common practice in according to British Standard for a design brief given by your tutor
This provide evidence of D2


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