Conforming to Federal Specifications C-76 Class IV, Wall B

Modified Bell & Spigot

• 12″ Diameter x 6′ Long
• 18″ Diameter x 8′ Long
• 24″ Diameter x 8′ Long
• 30″ Diameter x 8′ Long
• 36″ Diameter x 8′ Long
• 42″ Diameter x 8′ Long
• 48″ Diameter x 8′ Long

Precast Reinforced Concrete Manhole

• 48″ Diameter x 5″ Thick
• 1′ High Riser Section
• 2′ High Riser Section
• 4′ High Riser Section
• 3′ High Concentric Cone

Precast Reinforced Concrete Top and Bottom Slabs

• Top Slab for 48″ Diameter Shallow Manhole
• Bottom Slab for 48″ Diameter Standard Manhole