The special formwork without support from ground, used for constructing tall structures and which moves
up continuously is called as-
-
A.
Slipform
-
B.
Myvan form
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C.
Lost forms
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D.
Tunnel form
Correct Answer:
A. Slipform
Explanation:
Slipform is the correct answer because it is a specialized vertical construction method where concrete is poured into a continuously moving mold. Unlike traditional systems, it is raised by hydraulic jacks and becomes self-supporting as the concrete hardens, eliminating the need for ground-based scaffolding or repetitive dismantling as the structure rises. This makes it ideal for seamless, tall structures like chimneys, silos, and high-rise cores. - Myvan form: A modular aluminum system used for repetitive wall and slab casting, but it must be manually struck and reset for each floor rather than moving continuously.
- Lost forms: These are permanent stay-in-place molds that remain as part of the finished structure and do not move upward.
- Tunnel form: A system used to cast walls and slabs simultaneously in a single pour, but it is typically moved horizontally and reset for each section rather than climbing continuously.
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