This specification covers
general types of retaining walls. The
first are walls made up of layered and tiered precast reinforced blocks. The second are constructed with metal columns
and front and rear metal filler panels. Both
of these wall types are specialized and require Director’s approval. Acceptable manufacturers are sometimes
indicated in the plan notes.
1. Director’s approval is required.
2. Manufacturer’s wall type must be in successful
commercial use for a period of at least 3 years.
3. For galvanized metal walls, the Contractor must
furnish 3 copies of the Manufacturer’s, “Analysis and Coating Test
Certificate.”
4. State type size and quantity of units.
5. Precast concrete units must be produced by a certified
precast concrete producer and shipped with a TE-24.
6. Type of backfill used and how compacted.
7. Measure and pay as per 610.08
and 610.09
of the C&MS.