STEEL DESIGN

General Module

Course Sheet

Course code:

AI604

Academic Year of enrolment:

2019

Year of supply:

2021/2022

Type of Course:

Characterising

Degree:

Course of 1st Cycle Degree in BUILDING ENGINEERING

Disciplinary Sector:

Construction Techniques

Is part of:

STRUCTURAL DESIGN

Location:

PESCARA

Credits:

Programme Year:

Professor and Collaborators:

BRANDO GIUSEPPE

Cycle:

First semester

Hours of classroom activity:

Individual study hours:

Prerequisites:

Exam of Structural Mechanics

Objectives

The course aims to make the student confident with the basics for designing steel and reinforced concrete constructions according to the semiprobabilistic limit states method. This approach represents the basis of the current Italian legislation on constructions (NTC 2018), the Eurocodes and the main international Codes.
Both the serviceability limit states (control of deformations, cracks openings in reinforced concrete structures, etc.) and the ultimate limit states (section failure under compression, bending, compression/tension and bending, shear, as well as due to buckling phenomena, etc. are treated.).
The course includes a series of exercises that lead to the design of two 2D frames, one in steel (the portal of an industrial building( and one in reinforced concrete (a 2D frame of a multi storey building).

Contents

Starting from the principles given within the course of “Structural Mechanichs”, the course "Tecnica delle Costruzioni" aims to give the basic knowledge for designing steel (semester 1) and reinforced concrete (semester 2) structures.
The semi-probabilistic design method at the limit states is considered to the purpose, consistently with the provisions given by the current Italian legislation (Technical Standards of Construction 2018), as well as by Eurocodes. Both the serviceability and the ultimate limit states are treated.
Calculation methods and exercises for sectional analyzes, as well as analysis and design of simple static schemes are proposed.
The solution of reticulated systems (for steel) and a reinforced concrete frame, together with the design of some structural elements, will be the core of two projects: one concerning a steel industrial building and one concerning a 2D reinforced concrete extracted by a multi-storey building for residential use.

Extended Syllabus

SEMESTER 1
1. Structural safety: Introduction to the semiprobabilistic limit state design method.
2. Codes (NTC2018)
3. Actions: Load Cases and combinations
4. STEEL construction:
a. The Products: "Long" and "Flat" products
b. The material: constitutive law, mechanical characteristics, qualification tests, strength criterion (von Mises)
c. Manufacturing, hot rolling and cold forming processes. Profiles, shapes, composite members bolted, welded profiles
d. Imperfections
e. Structural types: Classifications of frames, operating schemes (mechanisms for transferring vertical / horizontal loads)
f. Steel Members in tension: sizing and checks; members with holes; effects of eccentric connections
g. The Eulerian Stability Problem; h. Ideal vs. Industrial members
i. Classification of Sections
j. Compression: Stocky and Slender members. Checks
k. Members in Bending: Flexural and shear behavior. Checks for resistance and buckling
l. Steel Members in Compression/Tension and Bending: Checks for resistance and buckling
m. Coupled Sections Profiles n. Deformability checks
o. Bolted Connections: components, Bolts in Tension, in shear, in shear and tension
p. Welded Connections: technologies, residual stresses, calculation / verification of
simple welded joints
q. Beam-to-column connections, welded and with end flanges
r. Beams and columns splices
s. beam-to-beam connections t. Column-bases connections. u. Design of the frame of an industrial building: analysis of loads, choice of profiles, connections, calculation report. The reviews of the project will end with the beginning of the lessons of the second semester 2019/20
SEMESTER 2
5. REINFORCED CONCRETE constructions:
a. Steel and concrete materials. Behavior of the two materials under tension and compression. Failure criteria. b. Pure tension and compression
c. Sections under bending. Bending behavior. Ductility of sections under bending forces. Checks at the SLU.
d. The Cross method for beams and notes on influence lines.
e. Sections under compression/tension and bending.Ductility of Sections under compression/tension and bending. SLU checks
f. Sections under shear: shear stresses and related behavior. ULS checks
g. Torsion
h. Punching
i. Calculation of RC frames: checks for different limit states.
j. Foundation systems. Introduction
k. Design of a 2D reinforced concrete frame extraxted by a multi-storey residential building: loads analysis, design of the slab, of a beam, of a column and of the related shallow foundations. Calculation reports and drawings are requested

Recommended Bibliography

The slides presented during the course will be published on the website http://elearning.unich.it.
Apart from the slides, the following books are also suggested:
Costruzioni in Acciaio: Bernuzzi C., Proporzionamento di Strutture in Acciaio. Hoepli ed. G. Ballio & F.M. Mazzolani, Strutture in acciaio, Hoepli. Costruzioni in Cemento Armato: A. Ghersi, “Il cemento armato. Dalle tensioni ammissibili agli stati limite: un approccio unitario”, Dario Flaccovio Editore. E. Cosenza, G. Manfredi, M. Pecce, “Strutture in cemento armato, basi di progettazione”, Hoepli. AICAP, Progettazione di Strutture in Cemento Armato Guida all’uso dell'EUROCODICE 2 con riferimento alle Norme Tecniche D.M. 14.1.2008, Voll. 1 e 2

Teaching Methods

The course includes theoretical lectures followed by exercises in which examples of calculation of structures and design of structural elements are treated.
In the second part of the respective semesters, additional hours for project reviews will be provided (steel for semester 1 and reinforced concrete for semester 2).

Evaluation methods

Verification of learning:

Both in the first and second semester there are two intermediate tests (one in the middle of the semester, the other at the end of the semester). If the students will succeed He/She will be exonerated from the final written exam.
Also, structural problems that the student can solve outside the lesson time will be suggested.
As for the design documents (steel shed in the first half and reinforced concrete frame in the second), weekly revisions are planned to verify the progress of the project.
In the event that the four intermediate tests have positive results, the final exam mark will be calculated as the average of the tests themselves (two on steel constructions, two on reinforced concrete constructions) and of the two design projects.
In the event that the intermediate tests have negative results (even partially), the final exam mark is calculated as the average of the two final exams (one on steel constructions, the other on reinforced concrete constructions) and the two design projects.

Contacts/More Information

contacts: giuseppe.brando@unich.it

Università degli Studi
"G. d'Annunzio"

Chieti - Pescara

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