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Material

Conditions

mm

ft

Steel

sheet 

0.05

1.6 ×10−4


pipe0.0451.44 ×10−4

stainless

0.002

7×10−6


rivet

3.0

1×10−2


rusty

2.0

7×10−3

Iron

cast

0.26

8.5×10−4


forged

0.046

1.5×10−4


galvanised

0.15

5×10−4

Brass


0.002

7×10−6

Plastic


0.0015

5×10−6

Glass


0

0

Concrete

smooth

0.04

1.3×10−4


rough

2.0

7×10−3

Rubber

smooth

0.01

3.3×10−5

WodWood

plank

0.5

1.6 ×10−3


See also

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