1.1 This specification covers the manufacture and purchase requirements of products used for the assembly and construction of circular vertical precast reinforced concrete manholes and structures used in sewer, drainage, and water works.
1.2 Part I, Sections 1 – 11, of this specification presents general requirements and requirements which are common to each precast concrete product covered by this specification.
1.3 Part II of this specification presents specific requirements for each manhole product in the following sections:
|
| Product | Section |
|
|
| Grade Rings | 12 |
|
|
| Flat Slab Tops | 13 |
|
|
| Risers and Conical Tops | 14 |
|
|
| Base Sections | 15 |
|
|
| Steps and Ladders |