A multi-storey building can develop lateral vibrations in the two principal directions and torsional vibration around its vertical shear centre axis. The natural frequency...

Dynamic Analysis

Free Vibration of Water Tank Stand When Filled With Water

Ubani Obinna Uzodimma - October 20, 2017 7

It is desired to find the eigenfrequencies and eigenvectors (modal parameters) of concrete water tank support when filled with water. This is a case...

Structural Analysis

Free Vibration of Trusses: A solved Example

Ubani Obinna Uzodimma - August 5, 2017 1

Dynamics of structures is a special branch of structural analysis, which deals with the behaviour of structures subjected to dynamic loads (loads that vary...

Structural Analysis

On Modal Analysis of Rigid Multi-Storey Frames

Ubani Obinna Uzodimma - April 24, 2016 2

1.1 Introduction A structure undergoes free vibration when it is brought out of static equilibrium and can then oscillate without any external dynamic excitation. Free...

Guidelines for Tying of Reinforcement

Construction Ubani Obinna - November 26, 2020 0

In the construction of reinforced concrete structures, reinforcement bars must be tied together in order to hold them in place and to also facilitate...

Cost of Reinforcement Works in Nigeria

Construction Ubani Obinna - November 21, 2020 1

Installation of reinforcements is an important item of work in the construction of reinforced concrete structures. The cost of reinforcement works therefore significantly impacts...

Design of Shear Walls

Eurocode 2 Ubani Obinna - November 21, 2020 0

Shear walls are structural members that provide additional lateral stiffness to a building by resisting shear, moment, and axial forces, which are produced due...

Technical Guide: Detailing and Arrangement of Beam Reinforcements on Site

Beams Mubarak Shittu - November 20, 2020 3

Beams are horizontal structural elements used for supporting lateral loads. In conventional reinforced concrete structures, beams usually receive load from the floor slab, but...

Elastic Analysis of Circular Plates

Slabs Ubani Obinna - November 12, 2020 0

A plate is a flat structural element that has a thickness that is small compared with the lateral dimensions. Plates are bounded by two...

Shear Wall-Frame Interaction in High-Rise Buildings

Frames Ubani Obinna - November 5, 2020 0

Shear walls and frames (comprising of columns and beams) are distinct structural systems that can be used in resisting lateral actions in high-rise buildings....

Effects of Wind on Billboard Structures

Steel Structures Ubani Obinna - August 7, 2020 0

Billboards are large outdoor advertising structures that are found along highways and city centres. Due to their large size and flexibility for creative output,...

Structural Analysis and Design of Residential Buildings Using Staad.Pro, Orion, and Manual Calculations

Structural Analysis Ubani Obinna Uzodimma - March 13, 2017 30

This should be a long post, but I am going to try and keep it as brief as possible. This post is more like...

PRACTICAL ANALYSIS AND DESIGN OF STEEL ROOF TRUSSES TO EUROCODE 3: A SAMPLE DESIGN

Structural Analysis Ubani Obinna Uzodimma - January 10, 2017 28

1.0 INTRODUCTION The most widespread alternative for roof construction in Nigeria is the use of trusses, of which timber and steel are the primary choice...

Can you identify the cause of failure of this building?

Construction Ubani Obinna - March 12, 2020 24

Structural failure is real, and it is the duty of structural engineers to identify all possible modes of failure in a structure, and design...

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