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...

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1 | P a g e E G B 3 7 5 A s s i g n m e n t 2 0 2 0 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 tutor/ lecturer; if you delay, you will lose this opportunity and will rush to complete, get frustrated and likely to make many errors. 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 3 7 5 A s s i g n m e n t 2 0 2 0 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 beam 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 3 7 5 A s s i g n m e n t 2 0 2 0 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, AS3600 (2018) (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, AS3600 (2018) (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 stirrups (21) Show detailed sketches suitable for the construction engineer 4 | P a g e E G B 3 7 5 A s s i g n m e n t 2 0 2 0 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 tutor/ lecturer/ 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 3 7 5 A s s i g n m e n t 2 0 2 0 6 5 4 3 2 1 Score Comment Clear and easy to follow steps are shown with cross reference to other steps where necessary (10%) The steps are very clear & logical and well illustrated. The steps are clear & logical The steps are clear but random All steps are shown, but not in a logical manner Most steps are shown Few steps are shown Appropriate and fair No steps are shown G R A D ECRITERIA for EGB375 Assignment Student Number 7 Sketches drawn for effective communication of the problem statement (10%) Shabby & 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 Correct formula and/ or design Clause chosen relevant to the question (10%) Correct formula/ design clause chosen, terms explained properly Correct formula/ design clause chosen, terms explained adequately Correct formula/ design clause chosen and terms explained briefly Surname Units of Measurement appropriately Used & illustrated (15%) All units shown and all are correct All units shown and are generally correct All units shown with ocassional error Most units shown with minor ommissions Some units shown but mostly wrong Some units shown but all are wrong Units not shown or are totally wrong Overal Grade Correct formula chosen, but terms not explained Formula/ Design Clause correct 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 shabby Date Tutorial class Assessed By: Summary and final design sketches clear & appropriate Summary and final design sketches reasonable Incomplete ummary provided with limited sketch and some erraneous 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