Mar. 6,1916 
Flow through Weir Notches 
1085 
application of the general formula given above can be extended to 
notches having side slopes of i to 1.4 (109° approximately). 
Table X, computed by the new general formula, gives the discharges 
through notches of different shapes with heads up to 1.25 feet. 
Table X .—Discharges (in cubic feet per second) for triangular weir notches 1 
Head. 
Notdi angle 28° 4'. 
Notch angle 30 
Notch angle 6o°. 
Notch angle 90 
Feet. 
O. 20 
Inches. 
2 yi 
0. 012 
O.OI3 
O. 027 
O. 046 
. 21 
zy 2 
. 014 
.015 
.031 
.052 
. 22 
. Ol6 
. 017 
.034 
.058 
•23 
2^ 
. Ol8 
. 019 
.038 
.065 
.24 
2 A 
. 020 
.021 
.043 
. O72 
•25 
3 y 
. 022 
.023 
.047 
. 080 
. 26 
3H 
. 024 
.025 
.052 
.088 
* 2 7 
3 K 
. 02(5 
. 028 
•057 
. 096 
.28 
3^8 
. O29 
.030 
. 062 
.105 
.29 
3 ^ 
.031 
*033 
. 068 
•“5 
•30 
.034 
.036 
.074 
•125 
•31 
•037 
•039 
. 080 
• 13 6 
•32 
. 040 
. 042 
. 087 
.147 
•33 
3 tt- 
.043 
.045 
.094 
•i 59 
•34 
4 A 
. O46 
.049 
. IOI 
.171 
•35 
4 tjJ 
.O49 
.052 
. 108 
. 184 
•36 
4 A 
■ 053 
.056 
. 116 
• 197 
•37 
4 A 
.056 
. 060 
. 124 
. 211 
.38 
4 A 
. 060 
. 064 
. 132 
. 225 
•39 
4 -H 
.064 
.068 
.141 
. 240 
.40 
4 « 
.068 
*073 
. 150 
.256 
.41 
4 ii 
. 072 
.077 
. 160 
. 272 
.42 
5tJt 
.077 
. 082 
. 170 
. 289 
•43 
sA 
. 08l 
. 087 
. 180 
.306 
•44 
5 >i 
.086 
. 092 
. 190 
.324 
•45 
sM 
. 09I 
.097 
. 201 
•343 
.46 
. 096 
. 102 
. 212 
.362 
•47 
$H 
. IOI 
. 108 
. 224 
• 382 
.48 
sK 
. 106 
.114 
.236 
.403 
•49 
sH 
. 112 
. 120 
. 248 
.424 
• 50 
6 
.Il 8 
, 126 
. 26l 
•445 
• 5 i 
6A 
. 123 
. 132 
.274 
.468 
• 52 
6A 
. I29 
.138 
. 287 
.491 
•53 
. I36 
.145 
• 3 01 
• 5 i 5 
• 54 
6A 
. 142 
.152 
• 3 i 5 
•539 
• 55 
6A 
. I48 
• 159 
•330 
• 5 <H 
• 56 
• 155 
. 166 
•345 
•590 
• 57 
. 162 
•173 
.360 
. 617 
•58 
m 
. 169 
.18.1 
• 376 
.644 
• 59 
7 * 
. 176 
.188 
• 392 
. 672 
/ Q.oi 95 \ 
1 Computed by the formula Q= (0.025+2.4625)# \ 2 ' 5 S 0 ’ 76 ) 
