Under this Article, the contractor shall perform all the necessary work required to construct brook crossings at the locations shown on the plans. The contractor shall furnish gravel foundations, where required, cast-iron pipe fittings, concrete encasements, temporarily divert the stream as required, restore the stream bed to the condition existing prior to the commencement of work and furnish all labor, materials, tools, appliances and equipment necessary or required to properly complete the work as specified, shown or directed.
A. 
Concrete. Concrete encasements shall be provided with the minimum dimensions and details as shown on the approved plans.
B. 
Cast-iron pipe. Cast-iron pipe shall be of the best quality cast iron, bell and spigot joint as specified under Cast-Iron Force Main.