Unit 36: Advanced Structural Analysis & Design

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Unit 36: Advanced Structural Analysis & Design


SIHE Unit Reference: CON263



BTEC Unit Reference 3217S


Credit Points: 15


Parent Course: Higher Nationals Con. & B. E.

Delivering Faculty: Technology


Level (on parent course): 2 (BTEC H2)


Date Validated

: May 2001


TOTAL STUDENT WORKLOAD


Students are required to attend and participate in all the formal timetabled sessions for the
unit. Students are also expected to manage their directed learning and independent study
in support of the unit.


Where norm
al timetabled sessions do not take place, additional directed learning may be
provided, and/or students are expected to undertake additional independent learning
.


PREREQUISITES

Study of


Design Principles & Application, Science & Materials, Analytical M
ethods
and Structural Analysis & Design


Description of Unit

This unit develops the student’s ability to analyse simple structures and produce an appropriate
design. The unit builds on techniques and understanding of structural behaviour developed in
Sc
ience & Materials)
.

The unit aims to provide the student with the basic analysis and design knowledge required to
carry out the design of common structural elements to the appropriate British Standard, Code of
Practice or European Code of Practice.

The st
udent is encouraged to work with simple real life examples and to gain the skills and
understanding to develop effective and economic designs.


Summary of outcomes

To achieve this unit a student must:

1

Calculate
bending moments and shear forces

for simple s
tructures

2

Explore
bending deflections

for simple structures

3

Explore the behaviour of
elastic columns

under axial loading

4

Examine
design methods for simply supported beams

in steel, reinforced concrete and
timber

5

Examine
design methods for columns

in stee
l, reinforced concrete, timber and masonry.



Content


1

Bending moments and shear forces

Analyse cantilevers and simply supported beams
: evaluate cantilevers and simply supported
beams with a number of point loads and uniformly distributed loading, using
superposition
techniques determine the bending moment diagrams and shear force diagrams for the beams

Analyse three pin frames
: evaluate three pin frames with inclined, horizontal and vertical
members with a number of point loads and uniformly distributed
loading, determine the
bending moment diagrams and shear force diagrams for the frames

2

Bending deflections

Bending deflections for cantilevers and simply supported beams
: Using Mohr's Moment
-
area
method, or Macauley’s method, determine the maximum deflec
tion for cantilevers and simply
supported beams of uniform section carrying a point load or an uniformly distributed load,
explore the effect of different materials and beam section on bending deflection in beams.

3

Elastic columns

Behaviour of slender ela
stic columns under axial loading
: Investigate elastic buckling, using
Euler’s method determine the critical load for an elastic column, investigate the concept of
effective length.

4

Design methods for simply supported beams

Produce valid designs for simpl
y supported beams in steel
: examine the concept of limit state
design as applied to steel, examine classification of sections, determine the suitability of
UB/UC sections regarding moment capacity, shear resistance and deflection.

Produce valid designs for

simply supported beams in reinforced concrete
: examine the
concept of limit state design as applied to reinforced concrete, determine the reinforcing
requirements and the deflection performance of singly reinforced rectangular beams.

Produce valid designs

for simply supported beams in timber
: examine the natural
characteristics of timber and evaluate how these affect the design methods, determine the
suitability of rectangular beams regarding moment capacity, shear capacity, bearing capacity
and deflection
.

5

Design methods for columns

Produce valid designs for columns in steel
: examine the buckling characteristics of UC, UB
and SHS sections, determine the axial load capacity of slender axially loaded sections with
bending moments about the major axis.

Pro
duce valid designs for short columns in reinforced concrete
: determine design status of
column, determine the reinforcing requirements of a short reinforced column under axial load
with bending moments about one axis

Produce valid designs for columns in ti
mber
: determine the axial load capacity of slender
rectangular timber sections

Produce valid designs for columns in masonry
: determine the vertical load capacity of square
and rectangular masonry columns.


Outcomes and Assessment Criteria

Outcomes

Assessm
ent criteria

To achieve each outcome the student must demonstrate the
ability to:

1 Calculate
bending
moments and shear
forces
for simple
structures



Calculate the bending moments and shear forces in a simply
supported beam with both point loading a
nd uniformly
distributed loading and draw the bending moment and shear
force diagrams



Calculate the bending moments and shear forces in a three pin
frame with both point loading and uniformly distributed loading
and draw the bending moment and shear force
diagrams.

1


Explore
bending
deflections
for
simple structures



Calculate mid span bending deflection in a simply supported
beam with point loading and also in a simply supported beam
with uniformly distributed loading .

2

Explore the
behaviour of
elastic col
umns
under axial
loading



Calculate the axial load carrying capacity of perfectly elastic
columns with differing end conditions.

3

Examine
design
methods for
simply supported
beams
in steel,
reinforced
concrete and
timber



Produce a valid design for a steel

beam



Produce a valid design for a reinforced concrete beam



Produce a valid design for a timber beam.

4

Examine
design
methods for
columns
in steel,
reinforced
concrete, timber
and masonry



Produce a valid design for a steel section column



Produce a valid d
esign for a short reinforced concrete column



Produce a valid design for a timber column



Produce a valid design for a masonry column.


Delivery

Students will, in general, work individually, however some group work may be useful in
classroom situations. Em
phasis will be placed on manual analysis techniques to determine the
values required for the subsequent design procedures. The designs of the structural elements can
be simple but will fully comply with the appropriate current standards. It is important
that the
students become familiar with current design practice of comparing capacity with load rather than
applied stress to allowable stress.




Assessment (Genesis Data)


In Unit
assessment

IU1

weighting %:


60%


assessment type:

Assignments and workbo
ok


duration:


In course


special facilities:

None required


additional details:

The pass mark for this element is Pass Minus P
-

(35%)


End of Unit
assessment

ET1

weighting %:


40%


assessment type:

Examination


duration:


2 hours


special facilities:

None required


additional details:

The pass mark for this element is Pass Minus P
-

(35%)




Common Skills should be assessed on 30% of the in unit assessment load and should
be from areas associated with task management, numeracy and the application of
information technology.


Assessment Strategy


To assist learning, there will be frequent use of design problems to familiarise the student
with the process of
Structural Analysis and Design
. The in unit assessments and end
test will be designed to integrat
e this process as well as to satisfy the designated
learning
outcomes.


Suggested Reading

Gere J, Timoshenko S
-

Mechanics of Materials
(4
th

edition, Stanley Thornas, 1996)

Seward D
-

Understanding Structures

(Macmillan, 1998)

Draycott T
-

Structural Ele
ments Design Manual
(Butterworth
-
Heinemann, 1990)

Williams M, Todd J
-

Structures: Theory and Analysis
(Macmillan, 1999)