1.A sewer pipe is to be laid from station 10+00 to station 13+20on a -1% grade, starting with invert elevation 326.32ft. at 10+00.Calculate invert elevations at each 50ft station along line.
2.A W 12x58, 24 feet long is pinned at both ends and braced in theweak direction at the third points. A992 steel is used.Determine the compressive design strength.
3.Select a W-18 shape of A-992 steel that can resist aservice dead load of 100 kips and service live load of 300 kips.The effective length KL is 26 feet.