15' - 0" x 12' - 0" x 9' - 0"
Airport "T" Manhole

Precast Concrete Airport T Manhole

Precast Concrete Airport T Manhole

Precast Concrete Airport T Manhole

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Precast Concrete Airport T Manhole

Precast Concrete Airport T Manhole

Concrete: 5,000 psi @ 28 days
                  5% - 8% entrained air
Rebar: ASTM A-615 grade 60 epoxy coated:
Available duct entrances: a) Standard KO window
                                              b) 5" Ø duct terminator 
                                              c) Custom configurations and/or locations
Design criteria: a) ASTM C585
                            b) Loading per ASTM C857, including:
                              -Earth cover: Min 1' - 0" Max 5' - 0"
                              -AASHTO aircraft 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 and ACI 350/01
Weight:  a) Top section: 65,385#
               b) Base section: 55,425#
               c) Total manhole: 120,810#

Precast Concrete Airport T Manhole

Item Description Qty.
1 Cable rack inserts: 1/2" Ø galvanized steel threaded inserts each with 1/2" Ø x 2-1/4" bolt 32
2 Pulling irons: 1-1/4" Ø steel, hot dipped galvanized 3
3 10T lifting anchors 8
4 20" Ø sump opening 1
5 1" butyl rubber joint sealant 8 rolls
6 Rebar
7 1" x 11-1/2" ground wire hole 1/2" KO 4
8 Ladder insert 3/8" Ø threaded carbon steel 4
9 1/4" Ø plastic threaded inserts
1/4" hex head SS bolt
1/4" x 1/4" nylon strap
18
10 Galvanized step 2
11 5" Ø duct terminator 54