In plastering, the 1^st coat is called ___________ and its thickness should be _______ mm.(a) Undercoat, 6-9(b) Floating coat, 6-9(c) Floating coat, 10-15(d) Undercoat, 10-15This question was posed to me in an interview for job.The origin of the question is Plastering topic in section Building Construction of Basic Civil Engineering

In plastering, the 1^st coat is called ___________ and its thickness s

1.	In plastering, the 1^st coat is called ___________ and its thickness should be _______ mm.(a) Undercoat, 6-9(b) Floating coat, 6-9(c) Floating coat, 10-15(d) Undercoat, 10-15This question was posed to me in an interview for job.The origin of the question is Plastering topic in section Building Construction of Basic Civil Engineering
Answer» Correct ANSWER is (d) Undercoat, 10-15 Easy explanation: PLASTERING can EITHER be DONE in single, 2 or 3 coats. The 1^st coat is undercoat of thickness of 10-15mm. 2^nd coat is floating coat of 6-9mm thickness. The last coat is the FINISHING coat of 2-3mm thickness.

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