This section is from the book "Modern Buildings, Their Planning, Construction And Equipment Vol2", by G. A. T. Middleton. Also available from Amazon: Modern Buildings.
Rough Oversailing, as previously directed.
Wall-Plates, as before directed.
Measure per foot super., and billed in squares. If firrings are more than 3 inches deep, call them "Deep firrings." Describe the boarding as, "With edges shot for lead."
Measure per foot run. State if 1 1/2 or 2 inches. If across grain, call them "Cross rebated."
Measure per foot run. State diameter.
Measure per foot super., and bill by weight. Add to nett length 6 inches for turn up against wall, and 6 inches at eaves (unless otherwise shown or specified), 6 inches for every 1 1/2-inch drip, and 8 inches for every 2-inch drip. Add to the width 6 inches for turn ups, and 6 inches for every 1 1/2-inch roll, and 8 inches for every 2-inch roll.
Number. If on splay, state it and keep separate.
Number. State if three-way or four-way.
All as previously described; also Flashings, and Rake out, Wedge, and Point Ditto.
Number the labour dressing lead into rain-water heads, etc.