[jjean]

Student ID 245
Homework Nail Penetration/Ruler Fractions #3

Hello Mr Lewis,
I have a few questions where the board is smaller than the nail. Am I reading this wrong (or doing the math wrong?) or should I be putting a number for the amount the nail is going through the board?
For example question 3:

5 penny nail penetrate a 1 1/4″ green beam

5d = 1 3/4″
1 1/4″ Nominal beam = 1 1/32 green

So I get the common denominator and when I do the math:

1 1/32″ Beam
– 1 24/32″ Nail

I can convert the beam to 0 33/32 but the nail is longer than the depth of the board. What am I messing up here?

Thank you!

[robert lewis]

Remember, always put the bigger number on top:

[jjean]

Gotcha thanks. So it doesn’t matter if the nail is longer than the boards thickness, larger number on top. Thanks

[robert lewis]

Technically, yes it does matter. But we’re not dealing with negative numbers in this class, so always put the bigger number on top in a takeaway.

[Author]

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