1 | P a g e E G B XXXXXXXXXXA s s i g n m e n t XXXXXXXXXX
EGB375 - Design of Concrete Structures: Sem 1 2020
ASSIGNMENT
Submission Type: Online (Turnitin) – Scanned Copy (Neatly Handwritten) or Typed
Release Date: 01 April 2020
Due Date: 23 May 2020 (by 11:59 pm)
This Assignment is worth 30%
Assume any data required and state all assumptions clearly.
This problem is formulated to provide you a chance to apply the theories introduced in the concrete
structures subject to design a simple facility and develop an appreciation of overall structural design
process. To gain the best outcome, you must ensure that you work on the assignment regularly from
the day of release until the day you submit.
When you work on the assignment, you may need several formative feedbacks from your tuto
lecturer; if you delay, you will lose this opportunity and will rush to complete, get frustrated and
likely to make many e
ors. To avoid these negatives, I urge you to start working on the problem
straight away and allocate regular time. The discussion board has been set in the BB for posting and
answering your queries related to this assignment. It is expected that you regularly see the
discussion and ask questions whenever required.
A declaration statement (template attached) with your signature must accompany the submission.
The assignment will be graded in QUT scale of 1 – 7 as per the CRA attached with this document.
Submissions ahead of due date are welcomed.
Wishing you well in this assessment.
Tatheer Zahra
Unit Coordinator
2 | P a g e E G B XXXXXXXXXXA s s i g n m e n t XXXXXXXXXX
PROBLEM:
A new architectural canopy is proposed to cover some portion of the ANZAC Square in Brisbane
CBD. Figure 1 shows the schematic elevation of RC frame to support the top glass covering
supported on the aluminium framing. The RC beam elevation and section are shown in Figure 2.
For making it light weight, the depth of the beam is restricted to 300mm, while the width of the
eam is proposed to be 200mm. You are required to design the RC beam by solving the questions
given on the next page.
Figure 1. Schematic View of the Canopy Structure
Figure 2. RC beam
The loading on this RC beam was calculated as below:
• Loading imposed by the glass panels and aluminium frame (wSIDL) = 10kN/m
• Loading imposed by a person for maintenance (wQ) = 2kN/m
It was decided to use 35mm effective cover and 32MPa grade concrete (unit weight 25kN/m3). Take
Ec = 30,100 MPa and n = 6.6.
FRONT VIEW
RC Beam
RC
C
ol
um
n
RC
C
ol
um
n
Al supports
300mm (Typ.)
8m
UDL from canopy
200mm
30
0m
m
Elevation Section
3 | P a g e E G B XXXXXXXXXXA s s i g n m e n t XXXXXXXXXX
Questions:
(1) Determine the self-weight of RC beam in kN/m
(2) Determine the magnitude of the uniformly distributed permanent (wG) load
(3) Determine the magnitude of the uniformly distributed ultimate design load w*
(4) Determine the design bending moment M*
(5) Determine the short-term bending moment ????∗
(6) Determine the long-term bending moment ????????∗
(7) Determine the direct and flexural tensile strengths of concrete
(8) Determine the area of steel required for the calculated M*
(TIP: Find Ast considering singly reinforced beam using ∅???? = ??∗. If this steel area
does not satisfy the ductility requirements of AS3600, design a doubly reinforced beam
keeping the same Ast and provide compression reinforcement for which the ductility and
moment demand are satisfied)
(9) Determine the gross second moment of area of the cross-section Ig
(10) Determine the cracked second moment of area of the cross-section Icr
(11) Determine the cracking moment Mcr,t
(12) Determine the steel stresses at serviceability stage
(13) Check if the steel stresses in (12) satisfy 0.3mm crack width intended consistent with Cl.
8.6.2.2, AS XXXXXXXXXX)
(14) Determine the crack spacing
(15) Determine the crack width and check if it is lower than 0.3mm. If not, why not and how
will you ensure crack width does not exceed 0.3mm?
(16) Select the allowable limit of deflection from Cl. 2.3.2, AS XXXXXXXXXX)
(17) Calculate the deflection of the beam and check if it is less than the allowable limit; if not,
suggest method for improvement.
(18) Calculate the design shear force V* and determine the ultimate shear capacity Vuc of the
cross-section
(19) Determine Vu,max and comment on the potential safety of the beam to shear
(20) Design the required sti
ups
(21) Show detailed sketches suitable for the construction enginee
4 | P a g e E G B XXXXXXXXXXA s s i g n m e n t XXXXXXXXXX
EGB375 Design of Concrete Structures
ASSIGNMENT
I, _________________________________________________,
Student Number ______________ declare that all work towards completing the assignment
have been performed by me with some/ no assistance from the tuto
lecture
friend.
I have neither shared this assignment with any other student – present or past / within or outside
QUT; nor did I have the assignment written or the problems solved by other students.
The assignment is fully solved and written by me.
Sign: ___________________________
Student Name:
Date:
5 | P a g e E G B XXXXXXXXXXA s s i g n m e n t XXXXXXXXXX
XXXXXXXXXXScore
Comment
Clear and easy to follow
steps are shown with cross
eference to other steps
where necessary (10%)
The steps are very
clear & logical
and well
illustrated.
The steps are clear
& logical
The steps are clear
ut random
All steps are shown,
ut not in a logical
manne
Most steps are
shown
Few steps are
shown
Appropriate and fai
No steps are shown
G R A D ECRITERIA for EGB375
Assignment
Student Numbe
7
Sketches drawn for effective
communication of the
problem statement (10%)
Sha
y & Unclear
sketch or no sketch
Wrong data in
unclear sketch
Poor sketch with
minimal data
Sufficient data in
poor sketch
Most data shown in
a reasonable sketch
All data shown in a
neat sketch
All data shown in
the excellent
sketch
Co
ect formula and/ or
design Clause chosen
elevant to the question
(10%)
Co
ect formula/
design clause
chosen, terms
explained
properly
Co
ect formula/
design clause
chosen, terms
explained
adequately
Co
ect formula/
design clause
chosen and terms
explained
iefly
Surname
Units of Measurement
appropriately Used &
illustrated (15%)
All units shown
and all are co
ect
All units shown and
are generally co
ect
All units shown with
ocassional e
o
Most units shown
with minor
ommissions
Some units shown
ut mostly wrong
Some units shown
ut all are wrong
Units not shown or
are totally wrong
Overal
Grade
Co
ect formula
chosen, but terms
not explained
Formula/ Design
Clause co
ect but
some parameter or
factor missing
Formula / design
clause wrongly
written
Wrong & totally
missed the point
Given
Name
Too few or too
many significant
figures & design
steps missing/ mixed-
up
Wrong values
mostly & poor
steps of calculation
Wrong values
allways & steps
mixed up
Wrong or no values
& steps are blank
or sha
y
Date
Tutorial
class
Assessed
By:
Summary and final
design sketches
clear & appropriate
Summary and final
design sketches
easonable
Incomplete ummary
provided with
limited sketch and
some e
aneous
data shown
Summary poorly
presented with some
sketch with
incomplete data
shown
Summary either not
provided or poorly
presented with
either no sketch or
limited sketch with
insufficient data
shown
Result neatly presented in
summary form and sketches
included to communicate
final design (15%)
Summary and final
design sketches
immaculate
Appropriate solution/
Numerical Accuracy of each
step of calculations (40%)
Appropriate and
immaculate
Appropriate and
good
Summary and final
design sketches
good