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Q1: RYERSON UNIVERSITY Faculty of Engineering and Architectural Science Department of Civil Engineering Course Number Course Title Semester/Year Instructor Assignment Title Submission Date Due Date Total Mark CVL904 Structural Concrete Design II Fall 2022 ASSIGNMENT No. 1 Design of Two-way Slabs Dr. R. Kianoush XXXX September 24, 2022 October 10, 2022, by Midnight 10% Student Name Student ID Signature* (Note: Remove the first 4 digits from your student ID) *By signing above you attest that you have contributed to this submission and confirm that all work you have contributed to this submission is your own work. Any suspicion of copying or plagiarism in this work will result in an investigation of Academic Misconduct and may result in a “0” on the work, an “F” in the course, or possibly more severe penalties, as well as a Disciplinary Notice on your academic record under the Student Code of Academic Conduct, which can be found online at: www.ryerson.ca/senate/current/pol60.pdf. Consider a slab that is part of the floor system shown in the Figure. The slab extends by 100 mm beyond the exterior edges of edge and corner columns to support the exterior wall panels. The slab is subjected to a specified superimposed dead load of 2.0 kPa (in addition to its own weight) and a specified live load (LL) of 4.8 kPa. The weight of the exterior panel is 3 kN/m. Use 15M bars for flexural reinforcement and 25 mm clear cover. All columns are 400 x 400 mm. Assume f'c = 25 MPa and fy = 400 MPa. a- Assume that the slab is supported by beams in both directions (along all grid lines). The overall depth of the beams are 600 mm (includes slab thickness) and width, bw=350 mm. i) Determine the minimum slab thickness for the most critical panel. ii) Assuming a slab thickness of 200 mm, design the slab in the E-W direction (for grid line 1). iii) Determine the design moments in the beams and the slab. Determine the amount and distribution of reinforcement in the slab. Show the details of your design on a neat sketch. b) Assume the slab is supported on columns only with the slab extending by 100 mm beyond the column lines around the perimeter of the slab. Assume the slab thickness is 250 mm. Determine the slab-ve and +ve moments within the column and middle strips for a slab strip along gridline 1. At this stage, assume the slab thickness is adequate to carry the applied shear (both one-way and two-way). i) Determine the amount and size of reinforcement for the slab. ii) Determine whether the slab meets the one-way shear requirements including corner column A1. iii) Determine whether the slab can carry two-way shear around the interior column B2. Include the effect of unbalanced shear-moment transfer in your design. c) Determine the slab moments and reinforcement for both slabs in parts a) and b) (with beams, h=200 mm and without beams, h=250 mm) using the SAFE/ETABS computer program. Compare the computer solution with the Direct Design Method. Comment on your results. 8.0 m 8.0 m 3 8.0 m 4 8.0 m 7.5 m 8.0 m 400 x 400 mm columns (typical) N↑See Answer
Q2: CIVE 447/847 - Spring 2022 Homework #4 Due: 03/11/24 Alignment Chart 1. Use the alignment chart to determine the effective length factors for Columns AB and BC of the unbraced frame. Assume that the beams are 12-in. × 18-in. and the columns are 12-in. × 12-in. Use the ACI code for calculating the moment of inertia (Columns will have 70% and beams will have 35% of the moment of inertia for gross cross sections). Use = 10 for the hinged base. Use the alignment chart provided. C B 30' 30' 30' 12' 12' 2. The following structure is being designed. To control the drift in the structure, the engineer of record has decided to stiffen the beams in one of the bays as shown. This beam can be considered to be rigid. Determine if slenderness needs to be considered for Column A. Use the alignment chart provided. Structural Information: f=4,000 (psi), and fy= 60 (ksi) Columns: 14-in. × 14-in. Elevation view of structure: Rigid Beam Column A Beams: 14"x20" 20' 16' Beams: 14"x24" 16' Beams: 14"x24" # 30' 30' 20' 20' Sway Frame Design 3. A six-floor (six-story) reinforced concrete frame building is supported on columns placed on a grid spaced 30 ft in the N-S direction and 20 ft in the E-W direction. At the first level, the distance from the top of the footings to the top of the first story is 18 ft. For other levels, the story height measured from the top of bottom slab to the top of the slab above is 14 ft. The columns are 20 in. by 20 in. Columns are connected in both directions by beams with an overall depth of 2 ft and a web width of 1 ft. The slab thickness is 6 in. for all floors. The standard compressive strength of concrete used in this building is 4,000 (psi). (4---- 6" (3) (2) ---- N B All Columns 20" x 20" 3@20'-0"-60'-0" 6" 30'-0" 30'-0" 30'-0" Plan View of the Building a) What is the moment of inertia of the beams? (Note: the effective width of the beams with flanges is 48 in.) 24" 48" 12" Typical Beam Section ✓ I 6" slab 6" Assume that the frame is unbraced and bending is about the E-W axis. In addition, assume that footings provide absolute ideal fixity at the base of the building. b) What is the effective length factor in Column B2 at the third level? c) What is the effective length factor in Column B1 at the third level? d) Assuming that there are no sustained loads on the columns, what is the effective length in Column B2 at the first level? f) e) What is the buckling load for all columns about the E-W axis bending at the first level? If the dead load is 0.1 kip/ft² and the live load is 0.06 kip/ft² on floors and the roof, what is the total factored axial load at the first level? (Use Load Combination of 1.2D + 1.0W + 1.0L) g) If the unfactored wind load is 30 lbf/ft² and the first-story column drift is 0.3 in., what would be the Q factor in ACI 318 at the first level? (Assume that the foundation carries half of the first story's wind load) h) What would be the moment magnifier using the Q factor calculated in (g) for the first level? i) What would be the moment magnifier if buckling strength of all columns at the first level is used in calculation for the sway frame system? If the owner and designer of the building decided to add a wall to the six-story building so that the building is braced, j) What would be effective length factor for bending about the E-W axis in Column B2 at the first level? k) If the unfactored axial forces from dead and live loads a particular column are 200 kips and 50 kips, respectively, what is the value of Bans? Note: For the calculation of 1 to compute the effective length factor, use the column height provided. For the calculation of buckling load, the unsupported length should be the height with beam depth subtracted from the column height.See Answer
Q3:1. Use the alignment chart to determine the effective length factors for Columns AB and BC of the unbraced frame. Assume that the beams are 12-in. x 18-in. and the columns are 12-in. x 12-in. Use the ACI code for calculating the moment of inertia (Columns will have 70% and beams will have 35% of the moment of inertia for gross cross sections). Use = 10 for the hinged base. Use the alignment chart provided. B 30' 30' 30' 12' 12'See Answer
Q4: Abu Dhabi University College of Engineering Department of Architecture and Design Bachelor of Architecture Program Spring 2024 ARC460 Structures II Group Project Description Students will create two computer models representing the structure and loads of two different building structures. One represents a steel structure and the second is a cast-in-placed reinforced concrete slab-beam system. Apply suitable and realistic superimposed dead loads, live loads, and wind forces suitable to the Emirate of Abu Dhabi. Conduct analysis and design of structural elements using the computer program ETABS. The computer models for each of the two structures should represent a ground floor height of 4.5 m and all remaining floor heights are 3.5 m. Loads and Computer Model Dead load: Use the software to automate the calculation of the self-weight of the structural system. • Apply 25 cm cement modular units (CMU) to building exterior and selected interior beams. Slab thickness for the concrete building is 150 mm, and you can accept the default slab thickness for the steel building. • • The floor slabs are identical and must have at least 4 spans in each direction. Accept the default structural elements that are selected by the software for the steel building and use appropriate material properties accordingly. For the concrete building try beams with 250 mm width and 500 mm overall height, but increase the dimensions of they fail. Beams supporting concrete Exterior beams are L- beams while interior beams are T-beams. All concrete beams and slabs are made of the same concrete with 35 MPa compressive strength. All columns are rectangular with 50 MPa compressive strength. Initial column dimensions are 500 mm x 500 mm. Select suitable openings to accommodate staircase(s) and elevators, but no need to include reinforced concrete shear walls in either of the two buildings. • Use at least two openings for staircases and two for elevators. Live Load: 1 Discuss with the teaching a suitable live load that matches your building usage (residential, office, etc). Wind load: Identify suitable wind load parameters for Abu Dhabi Emirate including wind speed in m/s (mph). Choose a suitable exposure category (B, C, or D) for your building. This should be coordinate with the teaching assistant. Requirements and Deliverables A. Professional Report No part of the report can be written ks first person. Passive voice is expected for the report for example: ASCE 7-16 was used to determine dead and live load; flexural capacity of beams was calculated using ACI 318 ....., etc. Cover page including (term and academic year, course code and title, project title, group members names and IDs) Group Members Contribution. This page describes in detail the contribution of each group member. While few tasks are common, each member must demonstrate clear contribution to the project in order to receive credit. Each group member must contribute to the report writing and editing. By uploading the reports to Blackboard, each member is acknowledging that the report is free from plagiarism. • Table of Contents • List of Figures • Notes: 1. All figures that appear in the report must be numbered and must have caption: e.g. Figure 3.4: Bending Moment Diagram for Controlling Load Combination List of Tables (if any) Notes: 1. All tables that appear in the report must be number and must have caption: e.g Table 2.4: Wind Load Parameters (ASCE 7, 2016) Introduction One page description of the project and its objectives. Theoretical Background Theoretical background with CAD drawn figures covering topics related to steel and concrete design and related codes. Separate the remaining part of the report into two parts A for steel building, and B for concrete building. • Loads and Analysis Results Description of external design loads and load combinations, followed by discussion of the structural response for the controlling load combinations. Create two models, one where all beams are modelled rectangular, and another where the beams are modelled as flanged. Based on selected beams and selected columns, 2 which model (if any) produces higher values (shear forces, bending moments, etc.) and by how much? For all design sections of the report, you must indicate the following information before you showing the calculation: 1) the controlling load combination(s) for the moment/shear force/load that you are designing for, 2) screen shot from the software showing which beam/column/footing your designing calculation pertains to. This information will be used for validating your design calculations. • • • Concrete Building: Design of selected interior T-Beams and Exterior L-Beams Design calculations and cross-section details of two spans of selected beams in one particular floor, preferably near the middle stories of the building. One span is interior and second is exterior, but in the same frame. This must cover design of longitudinal reinforcement, shear reinforcement, and checking of development length requirements. Concrete Building: Design of selected column Design calculations and cross-section details of a column in the ground floor. Show your calculations details and quality figures. Steel building: Show the design details, with the aid of the software, for a selected compression member (column). Steel building: Show the design calculations for bracing (tension member). Make all necessary assumptions. Summary. This must be one page long summarizing all activities. References Mandatory Instructions for Report 1. References should include as a minimum, the class textbook, ACI 318-14M, ASCE 7-2016, and two books from our library. List of references should not include more than two websites. 2. All references must be cited within the report. 3. All of the report must be typed using in MS Word and all figures must clear and readable (report that is not typed will be graded to a maximum of 50% of the total grade). Use the equation editor in MS Word. 4. The report cannot include the step-by-step presentation that illustrates how you created the computer model. The step-by-step presentation is a separate document. B. Step-by-step PowerPoint Presentation Create a step-by-step presentation showing the steps followed to create each of the two computer models. Each slide is a screen shot showing the step with short annotation (two-line description of the model). Deliverables: 1. Project report (Word file), 2) Step-by-step PowerPoint presentation, 3) Two ETABS files for each model (.edb and .e2k). 3/n• Concrete: • Concrete Building Beams: ° Design of selected interior T-Beams and Exterior L-Beams Design calculations and cross-section details of two spans of selected beams in one particular floor, preferably near the middle stories of the building. One span is interior and second is exterior, but in the same frame. This must cover design of longitudinal reinforcement, shear reinforcement, and checking of development length requirements. • Concrete Building Column: Design of selected column Design calculations and cross-section details of a column in the ground floor. Show your calculations details and quality figures. • Steel: 十三 • Steel building: Show the design details, with the aid of the software, for a selected compression member (column). Steel building: Show the design calculations for bracing (tension member). Make all necessary assumptions.See Answer

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