Pt4, the final frontier!
Ridge board positioning.
Simple really.
Top edge of ridgeboard will be at a height of “total rise” + “height above plate”
Bottom edge of will be at a height of “total rise” + “height above plate” - width of ridgeboard
Let’s use the videoman’s figures for an example:
He had total rise at 20”7/16, height above plate of 4”3/16 and a ridgeboard width of 8” but actually 7”1/4 finished size
So we get top of ridge at 24”5/8th (“total rise” + “height above plate”)
Bottom of ridge at 24”5/8 – 7”1/4 = 17”1/8 (hence the size of the temporary block he used to prop up the end of the ledger).
I'm going to lay down now.
P.S. If there are any chippy's (working or retired) who know a quicker/simpler method please let us amateurs into the secret.
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