Refer to the Pre-measured Guide
on the Inner Post for easy preset.
The numbers are on the BACKSIDE
of the Inner Post and are to be lined
up on the TOP REAR EDGE
of the Outer Post.
2 Strut Extentions AND
1 Heavy Duty Stut Extention
Inches MM Setting
3048
3073
3099
3124
3150
3175
3200
3226
3251
3277
3302
3327
3353
3378
3404
3429
3454
3480
3505
3531
3556
3581
3607
3632
3658
2
3
4
5
6
7
8 1/2
9 1/2
10 1/2
11 1/2
12 1/2
13 1/2
15
15 1/2
16 1/2
18
19
20
21
22
23
24
25
26 1/2
27 1/2
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
Inside Height of Culvert
in Millimeters
Adjust Post to this Height
in Inches
Inside Height of Culvert
in Inches
10’
11’
12’
CAUTION
■ Always follow the chart recommendations.
■ Decreasing the post length could cause damage to the culvert.
■ Always bolt heavy duty strut extentions first to lower strut.
■ ALL Strut Extensions must be bolted on with grade 8 bolts,
nuts and lock washers. Torque at 100 ft. lbs.
Post Adjustment Chart
Using Strut Extensions
(10’-12’)
For any culvert over 120” tall,
use Heavy Duty Strut Extention
bolted rst to the Lower Strut.
On top of Heavy Duty Strut bolt
the Regular Strut Extension
Post Adjustment Charts l JB Pipepuller
22
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