4' Diameter Manhole

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Precast 4-ft (48-in) diameter manholes are commonly used for both sanitary and stormwater access points.  They accommodate sharp turns, integration of various pipes, pipe sizes, and elevation changes.  The 48-in top sections include:

  • Offset Flat Top (FT) - For shallow grade, enables installer to rotate the access to match curb lines
  • Centered Flat Top (FT) - Used on structures without steps and typically away from curb lines
  • Eccentric Cones: 24", 36", 48" High - Allows steps, enables installer to match curb lines
  • Concentric 24" Cones - Used on structures without steps and typically away from curb lines
  • Haunched 24" Cones - Similar to concentric cone, wider-flared top to accept larger cast-iron frames

The following type manholes often specify (but are not limited to) the following options:

  1. Sanitary Manhole (Including CSO) - Exterior Coating, Steps, Boots/Link-Seals, Precast Invert, Frame & "SEWER" Cover
  2. Storm-Drain Manhole - Steps, Boots, Frame & "DRAIN" Cover
  3. Catch Basin - 24" Sump, Boots, Frame & Grate
  4. Utility Manhole - Frame & "ELECTRIC" Cover
  5. Leachate Manhole - Exterior Coating, Interior HDPE Liner, Boots/Link-Seals, Precast Invert, Frame & 'SEWER' Cover

American Concrete's manholes are manufactured in accordance with ASTM C478 and AASHTO M199 with respect to MaineDOT Standard Specification Section 712.06.

Specs
  • Category: Home
  • Use: Commercial, Sanitary, Stormwater
  • Class: H-20
  • Type: Concrete
  • Weight: Base: 1,376# (867#/VF)
  • Capacity: 94 Gal/VF
  • Interior Dimensions: 4'-0" Dia.
  • Exterior Dimensions: 4'-5" Dia.
Downloads
Manhole Weight & Size Chart MaineDOT Structure Designation Manhole Joint Profiles (ALL) 4-ft Manhole Spec Sheet

Precast 4-ft (48-in) diameter manholes are commonly used for both sanitary and stormwater access points.  They accommodate sharp turns, integration of various pipes, pipe sizes, and elevation changes.  The 48-in top sections include:

  • Offset Flat Top (FT) - For shallow grade, enables installer to rotate the access to match curb lines
  • Centered Flat Top (FT) - Used on structures without steps and typically away from curb lines
  • Eccentric Cones: 24", 36", 48" High - Allows steps, enables installer to match curb lines
  • Concentric 24" Cones - Used on structures without steps and typically away from curb lines
  • Haunched 24" Cones - Similar to concentric cone, wider-flared top to accept larger cast-iron frames

The following type manholes often specify (but are not limited to) the following options:

  1. Sanitary Manhole (Including CSO) - Exterior Coating, Steps, Boots/Link-Seals, Precast Invert, Frame & "SEWER" Cover
  2. Storm-Drain Manhole - Steps, Boots, Frame & "DRAIN" Cover
  3. Catch Basin - 24" Sump, Boots, Frame & Grate
  4. Utility Manhole - Frame & "ELECTRIC" Cover
  5. Leachate Manhole - Exterior Coating, Interior HDPE Liner, Boots/Link-Seals, Precast Invert, Frame & 'SEWER' Cover

American Concrete's manholes are manufactured in accordance with ASTM C478 and AASHTO M199 with respect to MaineDOT Standard Specification Section 712.06.

25XXXX

Data sheet

Weight
Base: 1,376# (867#/VF)
Capacity
94 Gal/VF
Interior Dimensions
4'-0" Dia.
Exterior Dimensions
4'-5" Dia.

Download

Manhole Weight & Size Chart

Manhole Weight & Size Chart

Download (33.82k)

MaineDOT Structure Designation

MaineDOT Structure Designation

Download (654.21k)

Manhole Joint Profiles (ALL)

Manhole Joint Profiles (ALL)

Download (57.29k)

4-ft Manhole Spec Sheet

4-ft Manhole Spec Sheet

Download (149.06k)

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