measurement problems?

[jakk]

In the future could we have someone who's familiar with the building construction industry to lay out the list of materials required for building the goals...everyone knows that a 2 x 4 is an inch and a half by three and a half...where did inch and a quarter come from? :confused:

[Mr.G]

In the past wood was cut with a band saw to the exact dimensions and sold as is. This is call rough saw-en lumber. It was found that wood could be planned smooth up to a 1/2 in smaller and not loose strength. So now lumber is sold a 1/2 inch undersized in all dimensions and planned smooth.

[Mike Schroeder]

In the future could we have someone who's familiar with the building construction industry to lay out the list of materials required for building the goals...everyone knows that a 2 x 4 is an inch and a half by three and a half...where did inch and a quarter come from? :confused:

well Actually a 2x4 can vary anywhere between 1 3/8 x 3 3/8 to 1 3/4 x 3 3/4

but is usually is 1.5x 3.5,

and i didn't know that until i started working in lumber at home depot


and everyone knows that Firsts BOM and Field designs are +/- a 1/4 in ;)