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What is the primary purpose for chamfering concrete elements. Is it for architectural or safety reasons? Is it forthe ease of stripping the formwork?

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تم إضافة السؤال من قبل Lateef Fadun CPEng PMP , subcontractor
تاريخ النشر: 2015/03/05
Husameddin Mousa
من قبل Husameddin Mousa , Commercial Unit Director , Saudi Binladen Group, Rush Project Division

Both, architectural and safety. it recommended to use triangular plastic strip in form work corners 

Nikos Mylonas
من قبل Nikos Mylonas , Senior Project Engineer , Mabbett

for foundation (buried) elements, chamfering makes the correct application of insulating membranes much easier. for fair-faced concrete, you avoid sharp edges which can easily break and also mitigates surface cracking propagating from the edges.

David Brooks
من قبل David Brooks , Design & Sales Eng. , PVSOL

to stop the corners of concrete breaking off. otherwise you would have a 'sharp' corner which is difficult to maintain

Lateef Fadun CPEng PMP
من قبل Lateef Fadun CPEng PMP , subcontractor

I would accept the standard practice but not without questioning the rationale. Usually, concrete members will be buried in block work and the chamfers are often buried in mortar.

 

As for the safety concerns, I see it from a different perspective. On many occasions, the final architectural details require "unchamfered" edges. Meaning that any chamfered edges will be "unchamfered". If it was a safety concern, an architect would not allow such corners in children school buildings for instance.

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