Civil Engineering homework help

Civil Engineering homework help. 1. Outline
Your group should provide a technical report, calculations and drawings outlining your design
proposals relating to a transfer structure option study. The report should not exceed 15 pages
including appendices, it should meet with the expectations of the “ARU Civil Engineering – Report
Writing” document (see Element 010 on Canvas). The report should be written for other Civil
Engineers to read, this is not a report that will go to a non-technical client. The requirement is to
record and clearly present:
 The design options that you considered for the transfer structures.
 Assumptions that you have made.
 Your calculations and design outcomes.
You will need to include annotated and dimensioned sketches and / or drawings which clearly
communicate your design proposals. As a minimum, the report should include the following titled
sections:
 Introduction
 Option 1 – Transfer beam
 Option 2 – Triangulated transfer truss
 Option 3 – Vierendeel transfer truss
 Option 4 – Your own design proposal
 Discussion section
Each of the four option subsections should outline:
 The geometry and loading being considered.
 The calculations you have carried out, these should include sufficient descriptive text to
ensure that the calculations are easy to understand. Also see the ARU report writing
guidance regarding equations.
 The results that you have obtained including BMD, SFD, AFD & deflected shape.
 Proposals for the structural material and economic section sizes that you plan to utilise.
As outlined in the calculations section below, you need to carry out calculations for each option
using multiple methods, this is to show that you are able to validate your results. Your discussion
section should include:
i. A comparison and critical evaluation of the viability of the four options. You should consider
cost, programme and buildability when comparing the options, you should consider options
for off-site manufacture when discussing programme and buildability.
ii. Critical comparisons of the results obtained by the various methods, e.g. which results do
you consider to be most accurate and why. You should discuss the extent to which your
hand and Excel calculations can be considered as validating your Robot analysis:
Definition: Validate – prove that something is correct.
MOD004941 – Design Technology 2019/20
Brief for Coursework – Group Report Rev 0
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2. Brief from the client
You have been asked to carry out a preliminary transfer structure option study for a four storey steel
framed office building. The steel frame is nominally a pin-jointed frame with a 9.0m x 7.5m column
grid and a 4.0m floor to floor height, see Figure 1.
Figure 1 – General structural arrangement for the baseline building.
The transfer structure will provide column free space in the centre of the building at ground floor,
this ground floor area will be used as a flexible conference / exhibition space. The frame coloured
green in Figure 1 is the only frame that will be modified by the transfer structure, the dashed red
columns are the columns that will be removed from the scheme if the transfer structure is found to
be viable. You have been asked to consider four different options for the transfer structure.
2.1. Transfer Option 1 – Beam at first floor
Figure 2 – Transfer beam at first floor level
MOD004941 – Design Technology 2019/20
Brief for Coursework – Group Report Rev 0
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2.2. Transfer Option 2 – Triangulated truss
Figure 3 – Triangulated transfer truss first to second floor
2.3. Transfer Option 3 – Vierendeel truss
Figure 4 – Vierendeel transfer truss first to second floor
Note: LOut =
Building width−LIn
2
=
9.0m+2∗LP−LIn
2
??? and ?? are given in Table 1.
MOD004941 – Design Technology 2019/20
Brief for Coursework – Group Report Rev 0
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2.4. Transfer Option 4
Propose an alternative design of transfer structure which has advantages over transfer
options 1, 2 & 3. You should look for design options which give definite advantages over the other
suggested options, some aspects that can be considered when assessing the advantages of your
option 4 design include:
 Lower quantity of material is required.
 Reduced impact on the use of the building, e.g. less impact on the space available to the
client at first floor.
 Shorter construction time.
2.5. Loads & deflection
Loads are defined in Table 1 below, advice regarding deflection limits can be found in the Steel
Designer’s Manual.
3. Calculations
As a minimum, for each of the transfer structure options, you should provide the following results
along with calculations to support those results:
 Bending moment diagram.
 Shear force diagram.
 The axial force diagram (when applicable).
 Deflected shape and magnitude of maximum deflection.
 Chosen material and viable economic structural sections for the transfer structures. It is
acceptable to check section capacities by using data provided in the Steel Construction
Institute “Bluebook”.
The form of calculation required for each option is as follows:
 Design Option 1 – Transfer beam:
o Hand calculations.
o Excel analysis using Steel Designers’ Manual equations.
o Analysis using structural analysis software, e.g. Robot Structural Analysis.
 Design Option 2 – Triangulated truss:
o Hand calculations for support reactions.
o Hand calculations to estimate the maximum forces in the top and bottom chords.
o Hand calculations to estimate the maximum force in the diagonals.
o Excel calculations for all member forces.
o Robot analysis.
 Design Option 3:
o Hand calculations for support reactions.
o Robot analysis of the vierendeel transfer truss.
 Design Option 4, calculations to be discussed and agreed with Reuben by week 8.
MOD004941 – Design Technology 2019/20
Brief for Coursework – Group Report Rev 0
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4. Group specific details
Each group must consider a specific load and span arrangement as indicated in the table below:
Table 1 – Dimensions and loads for each group
Gk Qk Gk Qk Option 1 Option 2 & 3
kN/m kN/m kN kN LIn – m LP
– m
1 22.1 13.1 1294 768 12.0 9.00
2 22.1 13.1 1294 768 12.5 8.75
3 22.1 13.1 1294 768 13.0 8.50
4 22.1 13.1 1294 768 13.5 8.25
5 22.1 13.1 1294 768 14.0 8.00
6 16.6 9.8 971 576 12.0 9.00
7 16.6 9.8 971 576 12.5 8.75
8 16.6 9.8 971 576 13.0 8.50
9 16.6 9.8 971 576 13.5 8.25
10 16.6 9.8 971 576 14.0 8.00
11 27.7 16.4 1618 960 12.0 9.00
12 27.7 16.4 1618 960 12.5 8.75
13 27.7 16.4 1618 960 13.0 8.50
UDL PNT Clear Span
Group
MOD004941 – Design Technology 2019/20
Brief for Coursework – Group Report Rev 0
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5. Mark Scheme
Aspect
Percentage of
total marks
available
Clarity and quality of written information:
Summary.
Discussion:
Critical comparison and evaluation of the options.
Critical comparison and evaluation of the calculations.
(20 overall)
6
7
7
Clarity and accuracy of graphical information and calculations:
Drawings of the proposed solution for each option.
BMD, SFD, AFD, deflection diagrams (annotated with values).
Hand calculations.
Explanation and results of Excel calculations.
(25 overall)
4
7
7
7
Effective use of analysis software:
Clear explanation of analysis models, e.g. geometry, loads,
sections, materials.
Validity of model for each option.
(Note: Results are marked above.)
(20 overall)
5
15
Benefits and viability of Option 4:
Benefits over options 1-3.
Viability of option 4.
(15 overall)
7
8
Overall quality of the report.
See ARU civil engineering report writing guidance document.
20

Civil Engineering homework help