The scene of a scaffolding collapse is always an image of devastation, devastation and big questions about responsibility. The scaffolding collapse accident at the clean water tank construction site has sounded the alarm about quality management and construction safety. The water tank cover, with its large volume of concrete and steel reinforcement, is a project that requires extremely precise calculations of construction methods and support systems. This incident is not only an accident but also a valuable lesson. Construction inspection is not only to determine the technical cause but also to find out legal responsibility and propose preventive solutions in the future.
INSPECTION OF THE COLLAPSE OF A WATER TANK COVER SCAFFOLDING - A WARNING ON CONSTRUCTION AND LABOR SAFETY
The assessment of the water tank cover scaffolding collapse focused on assessing the load-bearing capacity of the support system under the heavy and concentrated load of the concrete block.
1. Inspection of Scaffolding and Formwork Systems
a. Evaluation of Design and Actual Load Capacity (Decision Factor)
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Tank cover load: Water tank covers are often very thick (due to the requirements of compressive, bending and seismic resistance), resulting in very high static loads of fresh concrete. The inspection must compare the actual load of the poured concrete (thickness, density, mass) with the maximum load capacity of the scaffolding system according to the design.
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Support measures: Check the validity and procedure according to the construction solution with approved calculation configuration. Is the scaffolding calculated according to Vietnamese TCVN standards on Scaffolding and formwork?
b. Scaffolding Structure Analysis
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Type and Quality: Inspect the quality of scaffolding components (finished scaffolding, jacks, props, cross/skeleton braces). Are scaffolding bars bent, excessively rusted, or inconsistent?
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Spatial stability: This is key. With tall scaffolds and heavy loads, cross and horizontal bracing is extremely important to ensure stability. The engineers will check the density and quality of the connections of these bracings.
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Check Connections: Are the connections between scaffolding frames, between props and cross beams/jacks tightened and comply with spacing regulations?
c. Scaffolding Foundation Inspection
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The scaffolding foundation is the point where all the force is transmitted to the ground. The inspection engineer will check that the scaffolding feet are placed on stable, flat ground that can properly support the load. The uneven settlement of a few supports can cause a chain reaction that can collapse the entire system.
2. Concrete Pouring Process Inspection
3. Analysis of potential causes identified through construction inspection
- The causes of clean water tank scaffolding collapses can be divided into three main causes groups, commonly encountered in construction accidents:
a. Direct Technical Causes Group (Highest Percentage)
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Lack of safe construction design measures
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Using poor quality scaffolding
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Improper scaffolding installation
b. Group of causes on Management and Supervision
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Speed up concrete pouring progress.
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Lack of technical supervision at construction sites.
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Violation of labor safety.
c. Responsibilities of the Investor and Contractor
4. Legal Responsibility and Lessons on Construction Safety
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Legal responsibility: Based on the appraisal results, if it is determined that there is a serious violation of regulations on construction and labor safety causing death, the competent authority will initiate criminal proceedings for the crime of "Violating regulations on labor safety" or related crimes against responsible individuals.
IMAGES OF INSPECTION OF THE COLLAPSE OF A WATER TANK COVER SCAFFOLDING
COST OF CONSTRUCTION INSPECTION IN VIETNAM
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VietNam construction consulting - Mr. Thang 0902.593.686
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