4' - 0" X 4' - 0" Airport
Manhole

Precast Concrete Airport Manhole

Precast Concrete Airport Manhole

Precast Concrete Airport Manhole

Screen Friendly PDF


Printer Friendly PDF

Precast Concrete Airport Manhole

Concrete: 5,000 psi @ 28 days
                  5% - 8% entrained air
Available duct entrances: a) Standard KO window
                                              b) 5" Ø duct terminator specify tele duct or sch 40
                                              c) Custom configurations and/or locations
Design criteria: a) ASTM C585
                            b) Loading per ASTM C857, including:
                              -Earth cover: Min 0' - 0" Max 1' - 0"
                              -AASHTO 214,000# 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:  3' - 0" minimum headroom
               a) Roof slab: 5,350#
               b) Base section: 12,500#
               c) Total manhole: 17,850#

               7' - 0" maximum headroom
               a) Roof slab: 5,350#
               b) Base section: 24,500#
               c) Total manhole: 29,850#

Precast Concrete Airport Manhole

Item Description Qty.
1 4T lifting anchors 8
2 Pulling irons: 1-1/4" Ø steel, hot dipped galvanized 4
3 5" Ø Clear opening for sump 1
4 1" Ø ground rod hole 1
5 Cast-in Neenah R-3498-P2S 1
6 Rebar
7 1" butyl rubber joint sealant 3 rolls

Precast Concrete Airport Manhole