15' - 0" X 12' - 0" X 9' - 0" Type T Precast Concrete Manhole

Precast Concrete 15' - 0" X 12' - 0" X 9' - 0" Type T Manhole


Precast Concrete 15' - 0" X 12' - 0" X 9' - 0" Type T Manhole

Precast Concrete 15' - 0" X 12' - 0" X 9' - 0" Type T Manhole

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Typical Precast Concrete Manhole Installation

  

 
See a recent project using our 15' - 0" X 12' - 0" X
9' - 0" Type T Manhole:
 
 
 

Precast Concrete 15' - 0" X 12' - 0" X 9' - 0" Type T Manhole
Concrete: 5,000 psi @ 28 days
                  5% - 8% entrained air
Rebar: ASTM A-615 grade 60
Available duct entrances:    a) Standard KO window
                                                 b) 5" Ø duct terminator sch 40
                                                 c) 6" Ø duct terminator sch 40
                                                 d) Custom configurations and/or locations
Design criteria:   a) ASTM C858
                              b) Loading per ASTM C857,
                              Including:
                              -Earth cover: Min 1' - 0" Max 5' - 0"
                              -AASHTO HS-20 wheel load & applicable impact
                              -Vertical & lateral soil pressures determined using 120 PCF 
                              soil density
                              -Ground water at 3' - 0" below grade
                              c) Structural design performed using AASHTO strength design
                              d) Reinforcing cover per ACI 318
Weight:  Top section: 28,050#
               Base section: 25,215#
               Total manhole: 53,265#

Precast Concrete 15' - 0" X 12' - 0" X 9' - 0" Type T Manhole

Item Description Qty.
1 1/2" Ø galvanized steel cable rack inserts 32
2 Pulling irons: 1" Ø steel, hot dipped galvanized 3
3 8T lifting anchors 8
4 Sump depression w/ plastic lid 1
5 1" butyl rubber joint sealant 6 rolls
6 Rebar
7 1" Ø x 5-1/2" ground wire hole 1/2" KO 2
7 1" Ø x 5-1/2" ground rod hole 1/2" KO 2

Precast Concrete 15' - 0" X 12' - 0" X 9' - 0" Type T Manhole
30" Ø Standard Manhole Frame and Cover
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Hardware
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