Firstly, he is of retirement age.
Height 4' 11",
neck 14 1/2"
chest 36 1/2"
waist 37 3/4"
hip 38 3/4"
XB 13 3/4"
nape to CF waist 22"
back length 15"
nape to wrist 30 1/2"
So, as you can see, he is not of average proportions, he has a belly by virtue of a health issue- nothing more- he has had serious shoulder surgeries.
He has a difficult time buying anything that fits. He had a suit "custom made" not long ago in Toronto, which sort of swamped him, and did not have enough correction for his belly.
To begin with, I drew a little sketch of what need to be changed from the "average" suit draft.
(I have to post photos because I can't hook up my scanner to this computer.)
One: most modern styled drafts will produce a wide back and shoulders. I measured his custom suit which had a cross back measurement of 17 1/2" yikes- no wonder he looked a bit swamped in it.
Two: his waist measurement- he has a belly that is bigger than his chest measure. The suit jacket he tried on billowed below the belly- I could pin up at least an inch of body length at the back of his hip pockets.
Length: I like to get a measurement from the nape of the neck to the CF waist on the person. I use it when drafting to ascertain the placement of the front neck point above the back neckline- this affects the balance of the coat.
People are three dimensional- whenever you encounter increased size around the body it corresponds with an increase in length. Period. You have to allow for it otherwise you will have a problem with the balance of the garment.
I am going to work through this and you may think that I am going about it in a strange way- but it is the way I am going to approach it. I like to understand why things are the way they are, so I confess that I tend to alter and adapt systems that tell you what to do but don't explain the reasons for doing it.