Bethlehem Steel Sheet Piling Catalog 433 (No Date) page 9 shows a CP40 as weighing 30.7 lbs. per foot. The note says CP40 is made from section SP4. It recommends that with sections AP3, etc use corners 40 and 41. Dimensions of CP40 are shown on page 16 and notes say CP40 can be used with ZP...