Section 4.4 is on page 48 and Table 4.4.2 is on Page 45 of D1.1:1986 and they are a little different from the current edition. Here's the different lines from Table 4.4.2 for example:
Over 1/4" to 2" - 1 hr/in.
Over 2" - 2 hrs + 15 min for every inch over 2"
...and Section 4.4 is about half a page but, more than I'm going to type out. You can buy it at
https://www.awspubs.com/product_info.php?products_id=770I wish they made historical editions available in PDF ...and for less money. I don't suppose you could talk your customer into using current industry practices/standards?