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Home Authors Posts by Ubani Obinna

Ubani Obinna

29 POSTS7 COMMENTS
A dynamic civil engineer with vast experience in research, design, and construction of civil engineering infrastructures. He is a member of the Nigerian Society of Engineers. Reach him at ubani@structville.com
Slabs

Structural Design of Ribbed Slabs

Ubani Obinna - 0
Ribbed slab is a type of reinforced concrete slabs in which some of the volume of concrete in the tension zone is...
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Concrete

Construction of Underground Water/Septic Tanks by Sinking

Ubani Obinna - 5
Underground water retaining structures have wide applications in residential, commercial, and industrial buildings. According to Lagos State Development Laws (2005), a building...
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Dynamic Analysis

Calculation of Natural Frequency of Multi-Storey Frames

Ubani Obinna - 0
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...
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Concrete

3D Soil-Structure Interaction Analysis of Cantilever Retaining Walls

Ubani Obinna - 0
Retaining walls are structures used to retain earth fill, and have found wide applications in buildings and highway construction. Traditionally, cantilever retaining...
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Bridges

Analysis of Moving Load on Bridges Using Staad Pro

Ubani Obinna - 0
Every code of practice for bridge design has provision for modelling of traffic action as moving loads. This is similar to the idea of...
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Concrete

Formulas for Calculating Different Properties of Concrete from Compressive Strength

Ubani Obinna - 0
The most basic test done on concrete in most laboratories is the compressive strength test. Sometimes other properties of concrete such as...
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Column

Structural Design of Encased Steel Columns

Ubani Obinna - 0
Composite sections of concrete and steel have a lot of advantages especially in the structural performance and fire resistance of a building....
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Concrete

Difference between Autogenous and Drying Shrinkage of Concrete

Ubani Obinna - 1
Autogenous shrinkage is caused by self-dessication in young concrete as water is consumed during hydration reaction. This occurs majorly within the early...
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Concrete

Specification of Concrete for Water Retaining Structures

Ubani Obinna - 0
In the year 2018, we made a successful publication on Analysis and Design of Swimming Pools and Underground Water Tanks. In this post, we...
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Most Read

Displacement time history of a vibrating damped SDOF system

Dynamic Analysis Ubani Obinna - 0
Many engineering vibration problems can be idealised as single degree of freedom systems using mass-spring-dashpot model. In civil engineering, some water tank...
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Load Transfer from Slab to Beams – A Comparative Analysis

Beams Ubani Obinna - 1
In the design of reinforced concrete structures, floor loads are usually transferred from slabs to beams, and from the beams, the loads...
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Cost of building a duplex in Nigeria (foundation to DPC)

Construction Ubani Obinna Uzodimma - 2
The cost of building a duplex in Nigeria varies from location to location, and it is influenced by the size of...
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Standards for Highway Materials in Nigeria

Geotechnical Engineering Ubani Obinna - 0
Earth materials are extensively utilised for highway construction in Nigeria. It has been recognised that high quality lateritic soils which are abundant...
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EDITOR PICKS

Load Transfer from Slab to Beams – A Comparative Analysis

Beams Ubani Obinna - 1
In the design of reinforced concrete structures, floor loads are usually transferred from slabs to beams, and from the beams, the loads...
Read more

Natural Frequency Analysis of Multistorey Frames Using Staad Pro

Dynamic Analysis Ubani Obinna - 0
https://youtu.be/dqxGIy9fcvo Vibration (or Oscillation) is a time-dependent, repeated motion which a body undergoes when it is excited...
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Modeling and Analysis of Spherical LPG Tanks

Staad Pro Ubani Obinna - 0
Spherical tanks are used in several applications such as water storage, nuclear cooling, and storage of liquefied gases such as liquefied natural...
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POPULAR POSTS

Structural Design of Swimming Pools and Underground Water Tanks

Concrete Ubani Obinna Uzodimma - 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...
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PRACTICAL ANALYSIS AND DESIGN OF STEEL ROOF TRUSSES TO EUROCODE 3: A SAMPLE DESIGN

Eurocode 3 Ubani Obinna Uzodimma - 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...
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Structural Analysis and Design of Residential Buildings Using Staad.Pro, Orion, and Manual Calculations

Column Ubani Obinna Uzodimma - 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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