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Autogenous shrinkage is caused by self-dessication in young concrete as water is consumed during hydration reaction. This occurs majorly within the early...

Manual Design of Beam and Raft Foundation to Eurocode 2 (free PDF download)

Eurocode 2 Ubani Obinna Uzodimma - August 22, 2019 4

In our last post, we considered the analysis of beam and raft foundation of a G+1 building using Staad Pro software. In this particular...

Structural Design of Flat Slabs to Eurocode 2

Eurocode 2 Ubani Obinna Uzodimma - May 16, 2019 2

Flat slabs can offer economical solutions to wider floor spans in a reinforced concrete building. Flat slabs are slabs that are supported directly by...

Example on Structural Design of Waffle Slab

Eurocode 2 Ubani Obinna Uzodimma - April 30, 2019 0

Waffle slabs can be described as the equivalent of 2-way solid slabs especially when the spans are large, and ribbed system is to be...

GENERAL CIVIL ENGINEERING

Daily Questions

8 Top Civil Engineering Questions (Part 2)

Ubani Obinna Uzodimma - April 27, 2019 3

(1) For the structure shown in the figure below, which of the following is the most likely bending moment diagram considering linear first order...

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...

Statically Determinate Structures

Deflection of Elastic Systems Using Castigliano’s Theorem

Ubani Obinna Uzodimma - July 5, 2018 0

Castigliano's method for calculating displacements is an application of his second theorem, which states: If the strain energy of a linearly elastic structure can be...

RESEARCH REVIEW

Bridges

Analysis of Vehicle Collision on Bridge Piers

Ubani Obinna - April 1, 2020 3

EN 1991-1-7 discussed and gave guidance on accidental actions and their applications in the design calculations for bridge structures. It is obvious...

Analysis of Wind Load on Bridge Decks

Bridges Ubani Obinna - March 29, 2020 3

Analysis of Box Girder Bridges Using Staad Pro

Bridges Ubani Obinna - March 10, 2020 0

Analysis of Moving Load on Bridges Using Staad Pro

Bridges Ubani Obinna - March 2, 2020 0

Analysis and Design of Box Culvert Using Staad Pro

Bridges Ubani Obinna Uzodimma - June 27, 2019 2

STRUCTURAL ANALYSIS

Bridges

Analysis of Vehicle Collision on Bridge Piers

Ubani Obinna - April 1, 2020 3

EN 1991-1-7 discussed and gave guidance on accidental actions and their applications in the design calculations for bridge structures. It is obvious...

Reinforced Concrete Design

Effects of Temperature Difference on Cylindrical Tanks

Ubani Obinna - March 18, 2020 0

In our last post, we were able to evaluate the effect of temperature difference on rectangular tanks. In this article, we are...

Construction

Evaluation of effects of temperature difference in storage tanks using Staad Pro

Ubani Obinna - March 14, 2020 0

In some factories and industries, tanks are used for the storage of hot liquids which are used in production. In such scenarios,...

Bridges

Analysis of Box Girder Bridges Using Staad Pro

Ubani Obinna - March 10, 2020 0

A box girder is formed when two web plates are joined by a common flange at both the top and the bottom....

Latest Reviews

Concrete

Bonding of Old and New Concrete

Ubani Obinna Uzodimma - August 5, 2018 8

In construction, there always comes a time when there is need to bond old hardened concrete (substrate) with fresh concrete topping/overlay. This post aims...

Problems of Civil Engineering Consultancy in Nigeria

Guides Ubani Obinna Uzodimma - May 30, 2018 2

The wealth creation cycle in construction industry revolves around the political climate, economy, government policies, availability of resources, technology, and skilled manpower. Thousands of...

Use of Rice Husk Ash in Concrete: Literature Review

Concrete Ubani Obinna Uzodimma - April 25, 2018 1

1.0 Introduction A pozzolan is a siliceous or aluminosiliceous material that, in finely divided form and in the presence of moisture, chemically reacts with the...

GENERAL

Cost of building a duplex in Nigeria (foundation to DPC)

Construction Ubani Obinna Uzodimma - April 4, 2020 1

The cost of building a duplex in Nigeria varies from location to location, and it is influenced by the size of...

Standards for Highway Materials in Nigeria

Geotechnical Engineering Ubani Obinna - April 4, 2020 0

Earth materials are extensively utilised for highway construction in Nigeria. It has been recognised that high quality lateritic soils which are abundant...

Inclusion of women in construction industry

Construction Peace Ikpotokin - April 3, 2020 0

Growing up as a Nigerian from one of the least developed communities, I have identified that our continent Africa and Nigeria in...

Analysis of Vehicle Collision on Bridge Piers

Bridges Ubani Obinna - April 1, 2020 3

EN 1991-1-7 discussed and gave guidance on accidental actions and their applications in the design calculations for bridge structures. It is obvious...

Natural Frequency Analysis of Multistorey Frames Using Staad Pro

Dynamic Analysis Ubani Obinna - March 31, 2020 0

https://youtu.be/dqxGIy9fcvo Vibration (or Oscillation) is a time-dependent, repeated motion which a body undergoes when it is excited...

Important checklists before casting concrete on site

Ubani Obinna - March 27, 20201

Concrete

Concreting or casting days are usually big days for site engineers. It is very typical to see engineers and project managers work...

FOUNDATIONS

Geotechnical Engineering

Standards for Highway Materials in Nigeria

Ubani Obinna - April 4, 2020 0

Earth materials are extensively utilised for highway construction in Nigeria. It has been recognised that high quality lateritic soils which are abundant...

The West African Standard Compaction Test

Geotechnical Engineering Ubani Obinna - March 19, 2020 1

The West African Standard (WAS) compaction test is a type of compaction procedure that utilises intermediate compaction energy (compactive effort) for densification...

Construction of Underground Water/Septic Tanks by Sinking

Concrete Ubani Obinna - March 5, 2020 5

Underground water retaining structures have wide applications in residential, commercial, and industrial buildings. According to Lagos State Development Laws (2005), a building...

3D Soil-Structure Interaction Analysis of Cantilever Retaining Walls

Concrete Ubani Obinna - March 2, 2020 0

Retaining walls are structures used to retain earth fill, and have found wide applications in buildings and highway construction. Traditionally, cantilever retaining...

STEEL DESIGN

Staad Pro

Modeling and Analysis of Spherical LPG Tanks

Ubani Obinna - March 24, 2020 0

Spherical tanks are used in several applications such as water storage, nuclear cooling, and storage of liquefied gases such as liquefied natural...

Modelling and Analysis of Imperfections in Portal Frames

Steel Structures 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...

Structural Design of Encased Steel Columns

Column Ubani Obinna - February 24, 2020 0

Composite sections of concrete and steel have a lot of advantages especially in the structural performance and fire resistance of a building....

Structural Analysis of Portal Frames Subjected to Gravity Load

Structural Analysis 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...

Construction

Cost of building a duplex in Nigeria (foundation to DPC)

Ubani Obinna Uzodimma - April 4, 2020 1

The cost of building a duplex in Nigeria varies from location to location, and it is influenced by the size of...

Construction

Inclusion of women in construction industry

Peace Ikpotokin - April 3, 2020 0

Growing up as a Nigerian from one of the least developed communities, I have identified that our continent Africa and Nigeria in...

Concrete

Important checklists before casting concrete on site

Ubani Obinna - March 27, 2020 1

Concreting or casting days are usually big days for site engineers. It is very typical to see engineers and project managers work...

Quantity Estimation

How to build your rate and quote for concrete

Ubani Obinna - March 20, 2020 4

In civil engineering construction works, contractors bidding for a job are always required to specify the rate they will use in executing...

Steel Structures

Modelling and Analysis of Imperfections in Portal Frames

Ubani Obinna - March 11, 2020

Column

Procedures in Setting out of Reinforced Concrete Columns

Ubani Obinna - March 9, 2020

Column

Structural Design of Encased Steel Columns

Ubani Obinna - February 24, 2020

LATEST ARTICLES

Construction

Cost of building a duplex in Nigeria (foundation to DPC)

Ubani Obinna Uzodimma - April 4, 20201

The cost of building a duplex in Nigeria varies from location to location, and it is influenced by the size of...

Geotechnical Engineering

Standards for Highway Materials in Nigeria

Ubani Obinna - April 4, 20200

Earth materials are extensively utilised for highway construction in Nigeria. It has been recognised that high quality lateritic soils which are abundant...

Construction

Inclusion of women in construction industry

Peace Ikpotokin - April 3, 20200

Growing up as a Nigerian from one of the least developed communities, I have identified that our continent Africa and Nigeria in...

Bridges

Analysis of Vehicle Collision on Bridge Piers

Ubani Obinna - April 1, 20203

EN 1991-1-7 discussed and gave guidance on accidental actions and their applications in the design calculations for bridge structures. It is obvious...

Dynamic Analysis

Natural Frequency Analysis of Multistorey Frames Using Staad Pro

Ubani Obinna - March 31, 20200

https://youtu.be/dqxGIy9fcvo Vibration (or Oscillation) is a time-dependent, repeated motion which a body undergoes when it is excited...

Bridges

Analysis of Wind Load on Bridge Decks

Ubani Obinna - March 29, 20203

In the design of bridges, environmental actions such as wind, snow, and temperature should also be considered alongside traffic actions. In this...

Concrete

Important checklists before casting concrete on site

Ubani Obinna - March 27, 20201

Concreting or casting days are usually big days for site engineers. It is very typical to see engineers and project managers work...

Staad Pro

Modeling and Analysis of Spherical LPG Tanks

Ubani Obinna - March 24, 20200

Spherical tanks are used in several applications such as water storage, nuclear cooling, and storage of liquefied gases such as liquefied natural...

Quantity Estimation

How to build your rate and quote for concrete

Ubani Obinna - March 20, 20204

In civil engineering construction works, contractors bidding for a job are always required to specify the rate they will use in executing...

Geotechnical Engineering

The West African Standard Compaction Test

Ubani Obinna - March 19, 20201

The West African Standard (WAS) compaction test is a type of compaction procedure that utilises intermediate compaction energy (compactive effort) for densification...

12 3...21 Page 1 of 21

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

Eurocode 3 Ubani Obinna Uzodimma - January 10, 2017 26

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...

Structural Design of Swimming Pools and Underground Water Tanks

Concrete Ubani Obinna Uzodimma - November 27, 2018 28

I spent a large part of the last few months developing the contents of this booklet on 'Structural Design of Underground Water Tanks and...

Structural Aspects of Pile Foundation Design: A Practical Example

Foundations Ubani Obinna Uzodimma - February 17, 2020 4

Geotechnical engineers are expected to hand over soil investigation report to structural engineers, who will proceed to provide the longitudinal reinforcements needed for the...

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

Column Ubani Obinna Uzodimma - March 13, 2017 24

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

Natural Frequency Analysis of Multistorey Frames Using Staad Pro

Dynamic Analysis Ubani Obinna - March 31, 2020 0

https://youtu.be/dqxGIy9fcvo Vibration (or Oscillation) is a time-dependent, repeated motion which a body undergoes when it is excited...

Modeling and Analysis of Spherical LPG Tanks

Staad Pro Ubani Obinna - March 24, 2020 0

Spherical tanks are used in several applications such as water storage, nuclear cooling, and storage of liquefied gases such as liquefied natural...

Evaluation of effects of temperature difference in storage tanks using Staad Pro

Construction Ubani Obinna - March 14, 2020 0

In some factories and industries, tanks are used for the storage of hot liquids which are used in production. In such scenarios,...

Structural Design of Swimming Pools and Underground Water Tanks

Concrete Ubani Obinna Uzodimma - November 27, 2018 28

I spent a large part of the last few months developing the contents of this booklet on 'Structural Design of Underground Water Tanks and...

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

Eurocode 3 Ubani Obinna Uzodimma - January 10, 2017 26

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...

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

Column Ubani Obinna Uzodimma - March 13, 2017 24

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

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