ERRATA.

PNA cert

 

Page 14, line 10, for equivalent read equipment.

95,

105, the lines A B and A D, in Fig. 3, should be parallel with the corresponding

“ 22, “ inpinging “ impinging.

“ 31, “ gates “gate.

*. 81, © work * rock.

*« 20, “ bottom * batter.
BP Be ee At eB

* 11, “the pier “this pier.
«31, * 90 «90,

“ 621, “ basis “bases.

« 20, * end “ rod.

“ 18, “ walls “wells.

* 18, “ and “area,
“6, * support «supports.
*: 29, “ stood ** chord.

6 A Jand *. band.

lines in Fig. 4.

 

106, line 16, for se read £X2:5 |

106,

107,

109,
112,

112,

61.5
cc ce é ce é
23,“ o 246
6 cc é 6 é
ao 246
“9, read — M + 34.3 = 463500 pounds.

36 17, 6 - == 16607 — 2080 x.

n
uv

28, “ w= 480, w’ = 560 and 1/—= 290.5.