P-delta is a geometric non-linear effect that occurs in structures that are subjected to compressive loads and lateral displacement. Under the action of compressive...

Steel Structures

Second-Order Effects in Steel Structures

Ubani Obinna - July 25, 2020 1

Second-order effects involve the analysis of a structure based on the deformed geometry. In other words, second-order analysis recognizes the deflection in a structure...

Bridges

Design of Bridge Pier and Pier Cap

Ubani Obinna - May 18, 2020 3

Bridge pier caps are horizontal structural members used for transferring bridge deck loads to the piers, before they are transferred to the foundation. They...

Dynamic Analysis

Natural Frequency Analysis of Multistorey Frames Using Staad Pro

Ubani Obinna - March 31, 2020 2

https://youtu.be/dqxGIy9fcvo Vibration (or Oscillation) is a time-dependent, repeated motion which a body undergoes when it is excited in its natural state or by an external...

Steel Structures

Modelling and Analysis of Imperfections in Portal Frames

Ubani Obinna - March 11, 2020 0

Equivalent horizontal forces (EHF) are not strictly actions, but are forces that are applied to a frame in combination with other actions to model...

Structural Analysis

Structural Analysis of Portal Frames Subjected to Gravity Load

Ubani Obinna Uzodimma - February 15, 2020 1

Gravity actions are normally used for verification of portal frames for lateral, buckling, and torsional stability. Elastic analysis and design of portal frames is...

BS 5950

Preliminary Plastic Analysis of Portal Frames

Ubani Obinna Uzodimma - June 6, 2019 2

Steel portal frames provide economical solution for construction of industrial structures, warehouses, churches or other buildings with large enclosures. The loading scheme on portal...

Eurocode 3

Buckling Amplification Factor for Portal Frames Sensitive to 2nd Order Effects

Ubani Obinna Uzodimma - January 1, 2019 1

In order to evaluate the sensitivity of a portal frame to 2nd order effects, the buckling amplification factor αcr has to be calculated. This calculation...

Structural Analysis

Question of the Day (25/06/2018)

Ubani Obinna Uzodimma - June 24, 2018 6

Structville daily questions From now henceforth, Structville will be publishing daily questions on different aspects of civil engineering. You are expected to enter your response...

Structural Analysis

Basic Information on Fire Protection of Buildings

Ubani Obinna Uzodimma - June 23, 2018 5

Fire outbreak is a problem in buildings since it causes loss of human lives, injuries, destruction of properties, and poses serious environmental challenges. Injury and...

Structural Analysis

Question of the Day (04/06/2018)

Ubani Obinna Uzodimma - June 4, 2018 9

Structville daily questions From now henceforth, Structville will be publishing daily questions on different aspects of civil engineering. You are expected to enter your response...

Daily Questions

Question of the Day (30/05/2018)

Ubani Obinna Uzodimma - May 30, 2018 13

Structville daily questionsFrom now henceforth, Structville will be publishing daily questions on different aspects of civil engineering. You are expected to enter your response...

12 3 Page 1 of 3

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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Frames

Shear Wall-Frame Interaction in High-Rise Buildings

Column Axial Shortening in Tall Buildings

New Publication Alert: Structural Analysis and Design of Industrial Portal Frames

Application of Wind Load to Shear Walls – A Manual Approach

Static and Kinematic Determinacy of Structures

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Guidelines for Tying of Reinforcement

Cost of Reinforcement Works in Nigeria

Design of Shear Walls

Technical Guide: Detailing and Arrangement of Beam Reinforcements on Site

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Elastic Analysis of Circular Plates

Shear Wall-Frame Interaction in High-Rise Buildings

Effects of Wind on Billboard Structures

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