Answer / viki

beam-25 mm or dia of bar(whichever greater)
column-40 mm or " " "
footing-50 mm or " " "

Answer / er shalu verma

for beam- 25 mm
column-40 mm
footing- 50mm

Answer / joseph

.Cover should be not less than the nominal value corresponding to the relevant environmental category plus any
allowance for loss of cover due to abrasion.
Refer BS 8110-1 clause 3.3.7
but for your basic info : cover to column and beam should not be less than 3cm and for footing it should not be less than 7.5cm (where soil in contact) and 5 cm (where there is no contact with soil ).
But please go through the soil investigation report for the precise value.

regards
joseph

Answer / dharmendra singh

column 40mm
beam 25mm
footing 50mm

Answer / vishal

50mm

Answer / aa

Beam=20mm,
Column=25mm,
fotting=40mm.

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