Design of Concrete Structures

Code:

M.EC008

Acronym:

DEB

Keywords
Classification	Keyword
OFICIAL	Structures

Instance: 2023/2024 - 2S

Active?	Yes
Responsible unit:	Department of Civil Engineering
Course/CS Responsible:	Master in Civil Engineering

Cycles of Study/Courses

Acronym	No. of Students	Study Plan	Curricular Years	Credits UCN	Credits ECTS	Contact hours	Total Time
M.EC	65	Syllabus	1	-	6	45,5	162

Teaching language

English
Obs.: Nas aulas com estudantes não proficientes na língua portuguesa, a língua de trabalho é inglês. Caso contrário, poderá ser usada a língua portuguesa.

Objectives

Using the previous knowledge related to the calculation of cross-sections of reinforced concrete (RC) elements, this Course Unit (CU) aims to enable students to use accurately the theoretical and practical principles for the analysis and design of RC structures, namely frames, slabs, walls and foundations. The behaviour in service and close to failure is analysed, and the requirements of Eurocode 2 (EC2) are discussed and applied.

This CU aims to develop the following skills and competences:
(i) Ability to design RC projects, presenting drawings to allow the correct execution on the construction site;
(ii) Critical evaluation of the solutions found, selecting safe structural options with the best cost/performance ratio;
(iii) Ability to solve Civil Engineering problems without a unique solution;
(iv) Initiation in the practice of RC building structures design.

Learning outcomes and competences

As a result of the learning process, the student will be capable of handling the principles, theories and models of analysis and design of RC structures, including linear elements (beams and columns), laminar elements (slabs and bracing walls) and foundations.

He will also acquire knowledge about the behaviour of RC structures, both under service conditions (linear-elastic behaviour) and at the ultimate limit state (non-linear behaviour), accounting for the provisions of EC2.

Working method

Presencial

Pre-requirements (prior knowledge) and co-requirements (common knowledge)

Attendance of Course Units with contents of Mechanics, Strength of Materials, Theory of Structures and Design of Sections of Structural Concrete is fundamental for an adequate learning on the present Course Unit.

Program

Chapter 1 - Behaviour of RC structures under service load conditions. Shrinkage and creep effects. Durability of structures. Reinforcement design to control cracking due to imposed deformations. Deformation limit state.

Chapter 2 - Global and local 2^nd order effects. Analysis of RC framed structures based on plastic and elastic methods with limited redistribution. Design and detailing rules.

Chapter 3 - Analysis and design of solid and lightweight slabs. One-way slabs. Two-way slabs. Flat slabs. Punching. Design of stairs.

Chapter 4 - Concrete foundations. Column footings and wall footings. Foundations shared by several columns and inverted slabs as foundations.

Mandatory literature

Appleton Júlio António da Silva; Estruturas de betão. ISBN: 978-972-8620-21-9
Mosley Bill; Reinforced concrete design to Eurocode 2. ISBN: 978-0-230-50071-6
European Committee for Standardization; Eurocode 2
Docentes; Slides de apresentação
Docentes; Apontamentos

Complementary Bibliography

Nilson Arthur H; Design of Concrete Structures. ISBN: 0-07-115425-6
Leonhardt Fritz; Construções de concreto
Jiménez Montoya Pedro 1917-2006; Hormigón Armado. ISBN: 84-252-1825-X

Teaching methods and learning activities

All the subjects are presented and discussed during the theoretical (T) and theoretical-practical classes (TP), where the theories and models are explained, together with the resolution of practical exercises. The proposed practical exercises, related with different structural typologies, as well as the clarification of doubts that arise during the application of the models and in the elaboration of the drawings for execution, are clarified in the TP classes.

DEMONSTRATION OF THE COHERENCE BETWEEN THE TEACHING METHODOLOGIES AND THE LEARNING OUTCOMES:

The presentation in the T classes of the principles that support the analysis and design of RC structures, together with the presentation of the applicable rules of EC2, introduces the essential training that this CU aims to provide to the students in the design of the different elements of a building. To support this training, application examples are presented in the classes, covering each one of the subjects included in the CU programme. Properly selected to demonstrate the correct use of those principles and requirements, these application examples provide the students with the essential training to autonomously solve the tasks proposed to them in Exercise Sheets dedicated to each chapter.

In the TP classes students are encouraged to present any doubts felt during the resolution of the proposed exercises about all subjects taught, discussing the respective solutions for the correct design of RC building structures, and applying the provisions of EC2. The training in the elaboration of the drawn pieces that allow the correct construction on site of the designed elements is also treated in the TP classes.

Evaluation Type

Distributed evaluation with final exam

Assessment Components

Designation	Weight (%)
Exame	70,00
Trabalho prático ou de projeto	30,00
Total:	100,00

Amount of time allocated to each course unit

Designation	Time (hours)
Estudo autónomo	113,00
Frequência das aulas	49,00
Total:	162,00

Eligibility for exams

Achieving final classification requires compliance with attendance at the CU, according to the FEUP assessment rules. It is considered that students meet the attendance requirements if, having been regularly enrolled, the number of absences of 25% for each of the presencial classes’ types is not exceeded.

Calculation formula of final grade

The final grade is defined with a basis on a distributed evaluation and a final exam.

The distributed evaluation has an optional character, consisting of the evaluation of two practical problems, one related to the subject of chapters 1 and 2, and the other to the subject of chapter 3.

All the evaluation components are expressed on a 0 to 20 numerical scale.

The final grade, FG, is obtained with the following formula:

FG = max { CF1; CF2; CF3; FE }

being:

CF1 = 0,70 x FE + 0,15 x PP1 + 0,15 x PP2
CF2 = 0,85 x FE + 0,15 x PP1
CF3 = 0,85 x FE + 0,15 x PP2

where:

FE - grade of the final exam;
PP1 - grade of the practical problem 1;
PP2 - grade of the practical problem 2.

NOTE 1: The distributed evaluation component is optional, and not subject to supplementary evaluation.

NOTE 2: All students enrolled in the CU are classified according to this method.

NOTE 3: Classifications from distributed evaluations obtained in previous academic years are not applicable to the present academic year.

NOTE 4: Students who wish to obtain a final grade over 17 must have a final grade FG not less than 17,5 and apply for an oral exam.

Examinations or Special Assignments

Practical works consist of two problems related to the design of reinforced concrete structures, on subjects covered in the CU.

Special assessment (TE, DA, ...)

Due to the optional condition for the distributed evaluation, students with special status are subjected to the same conditions of the final evaluation of the other students.

Classification improvement

The classification improvement can be performed under the same conditions of the final exam and the accumulation of the classification of distributed evaluation.