Ubani Obinna
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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
Dynamics of Footbridges | Vibration and Serviceability
Footbridges are susceptible to traffic-induced vibration due to their typical slender nature. Therefore, the serviceability level of pedestrian bridges is influenced by the deformations...
Unit Weight of Construction Materials
Unit weight or density is used to quantify the weight per unit volume of an object. When it is expressed in the basic SI...
Loads on Footbridges | Actions on Pedestrian Bridges
A footbridge (also called a pedestrian bridge) is a structure that is designed to enable pedestrians to cross over natural or man-made obstacles such...
Design of a Building Against Internal Explosion
According to section 5 of EN 1991-1-7:2006 (Eurocode 1 Part 7), explosions shall be taken into account in the design of buildings or civil...
The 2018 Earthquake Induced Flow-Slide in Jono Oge Sulawesi, Indonesia
On September 28, 2018, a large earthquake of magnitude (Mw) 7.5 struck Sulawesi Island, Indonesia. A major cause of large fatalities from this event...
Analysis of Laterally Loaded Piles
Piles are used for resisting vertical and lateral loads that are transmitted to the substructure of buildings. Structures such as tall chimneys, highrise buildings,...
Design of Braced Cuts in Excavations
In the construction of any substructure below the ground surface, excavations must be made to the recommended depth before the construction can begin. In...
Quantity Estimation Guide for Construction Sites
Site managers are saddled with the responsibility of making material requisition and ensuring that construction progresses without too many glitches. One of the major...
When to Order the Demolition of a Building
The demolition of a concrete structure may be done for a lot of reasons, irrespective of the cost and environmental implications. It is not...
Hemp and Recycled Aggregate Concrete
Hemp and Recycled Aggregates Concrete (HRAC) is a sustainable concrete where coarse aggregates are partially replaced with industrial hemp fibers and recycled concrete aggregates...
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