8' - 0" X 4' - 0" X 6' - 0" Type A Manhole

Precast Concrete Manhole 8' - 0" X 4' - 0" X 6' - 0"


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Typical Precast Concrete Manhole Installation

 

Precast Concrete Manhole 8' - 0" X 4' - 0" X 6' - 0"
Concrete: 5,000 psi @ 28 days
                  5% - 8% entrained air
Rebar: ASTM A-615 grade 60
Available duct entrances:  a) Standard KO window
                                               b) 4" Ø duct terminator specify tele duct or sch 40
                                               c) 5" Ø duct terminator sch 40
                                               d) 6" Ø duct terminator sch 40
                                               e) Custom configurations and/or locations
Design criteria:  a) ASTM C858
                          b) Loading per ASTM C857,
      
                           Including:
                           -Earth cover: Min 2' - 0" Max 5' - 0"
                           -AASHTO HS-20 wheel load & applicable impact
                           -Vertical & lateral soil pressures determined using 120 PCF 
                           soil density
                           c) Ground water at 3' - 0" below grade
                           d) Reinforcing cover per ACI 318
Weight:      Top section: 6,795#
                   Base section: 6,695#
                   Total manhole: 13,490#

Precast Concrete Manhole 8' - 0" X 4' - 0" X 6' - 0"

Item Description Qty.
1 1/2" Ø plastic cable rack inserts & 1/2" x 2-1/4" hex head bolts 56
8 bonding ribbon assy's including:
2 1/4" Ø x 1" inserts & hex bolts 8

1/16" x 3/8" soft tinned copper bonding ribbon 12'

5/8" cable clamps 8
3 Pulling irons: 1" Ø steel, hot dipped galvanized (provisions for two additional pulling irons) 2
4 4T lifting anchors 12
5 Sump depression w/ plastic lid 1
6 1" butyl rubber joint sealant 3
rolls
7 Rebar

Precast Concrete Manhole 8' - 0" X 4' - 0" X 6' - 0"
30" Ø Standard Manhole Frame and Cover
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Hardware
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