RECLAMATION OF TIDE LANDS. 



For each additional gate: 



17 cubic yards concrete. 



7 pieces creosoted lumber, 3 by 12, 12 feet long, 250 B. M. 

 20 feet 6-ply rubber belting, 2\ inches wide. 

 250 wood screws, 1\ inches long. 

 85 machine bolts, ^ by 5 inches. 

 200 wrought washers for f bolts. 

 15 machine bolts, f by 5^ inches. 

 2 T-head anchor bf)lts, | by 16 inches. 

 85 square yards cotton duck. 



1 counterbalance. 



2 link hinges. 



Bill of material for a three-cJiaviber ivooden sluice gate as shown in Plate XVI. 



Lumber for frame work: 



1 cap, 10 by 12, 20 feet long. 



1 sill, 10 by 12, 20 feet long. 



2 sills, 10 by 10, 22 feet long. 

 2 caps, 6 by 10, 20 feet long. 

 6 posts, 10 by 10, 6 feet long. 

 6 posts, 8 by 10, 6 feet long. 



1 gate beam, 4 by 6, 16 feet long. 



1 floor beam, 6 by 6, 16 feet long. 



3.3 pieces sheet piling, 3 by 12, 14 feet long. 

 25 pieces of flooring, 2 by 10, 12 feet long. 

 17. pieces siding, 2 by 10, 14 feet long. 



2 caps for sheet piling, 3 by 6, 14 feet long. 

 Total, 3,930 feet, B. M. 



Hardware : 



28 machine bolts, ^ by 1\ inches for wings. 

 56 wrought washers for ^-inch bolts. 

 9 machine bolts, f by 17 for floor beams. 

 9 machine bolts, f by 15 for gate beams. 

 12 machine bolts, f by 11 for bent joints. 

 12 machine bolts, | by 10 for bent joints. 

 84 wrought washers for | bolts. 

 1 keg boat spikes, f by 6. 

 Material for three swinging gates: 



6 pieces, 3 by 12, 14 feet long^^^^, f^^^ g ^^ 

 9 pieces, 3 by 12, 12 feet long/ 

 54 feet 6-ply rubber belting, 2\ inches wide. 

 8 yards heavy cotton duck. 

 180 machine bolts, \ by 5 inches. 

 360 wrought washers for ^-inch bolts. 

 45 machine bolts, f by 5^ inches. 

 90 wrought washers for f-inch bolts. 

 600 wood screws, \\ inches long. 



3 complete counterbalances, as shown on drawing. 

 6 link hinges, as shown on drawing. 

 White lead and oakum as required. 



397 



