ROUND HOLES FOR MORTAR JOINTS IN
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For holes not
intended for installation of field installed rubber connectors.
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Both through
holes and partial indentation knock out formers available.
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Partial Hole/Knockouts
must be ordered with attachment so they can be held tight
to jacket wall.
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Hole form diameters
do not represent specific inside pipe diameter applications
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Hole diameters shown below are measured at
the face of the Hole Form or at the inside radius of the manhole.
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MANHOLE
ID
WALL |
24"
3"
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Wall
Taper |
24"
4"
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Wall
Taper |
24"
5"
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Wall
Taper |
24"
6"
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Wall
Taper |
36"
4"
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Wall
Taper |
36"
5"
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Wall
Taper |
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Hole Dia. |
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4" |
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| 5" |
5243 |
10.0 |
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7" |
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7364 |
10.6 |
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10" |
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12" |
12243 |
24.1 |
12244 |
5.4 |
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14" |
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15" |
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16" |
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16245 |
8.9 |
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16364 |
10.2 |
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18" |
18243 |
8.9 |
18244 |
10.6 |
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18246 |
9.8 |
18364 |
9.8 |
18365 |
8.5 |
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20" |
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20245 |
9.6 |
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21" |
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21364 |
10.0 |
21365 |
10.0 |
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22" |
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22364 |
10.2 |
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24" |
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24245 |
7.8 |
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24364 |
9.3 |
24365 |
10.0 |
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26" |
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28" |
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28365 |
10.0 |
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30" |
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32" |
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34" |
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35" |
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36" |
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38" |
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40" |
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42" |
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44" |
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45" |
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48" |
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52" |
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55" |
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58" |
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62" |
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64" |
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| 72" |
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| 74" |
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| 76" |
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Calculation for determining largest opening of hole form
WITH known wall taper:
((WALL TAPER X TANGENT) X 2) X WALL THICKNESS + FACE DIAMETER
This catalog page is available as an excel speadsheet to
include large diameter opening of hole form.
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