Specifications include, but are not limited to: A. The Contractor shall provide Concrete Mix of various types. High Strength Concrete Mix Shall be Sakrete brand High Strength Concrete Mix -Model #65200390 Bag size shall be 80 lbs. Portland Cement-Type I Shall be Type I-General purpose cement suitable for all uses where the special properties of other types of Portland cement are not required. Bag size shall be 94 lbs. Mortar Mix-Type S Shall be Type S-Suitable for below-grade applications, such as masonry foundations, manholes, retaining walls, and sewers, as well as at-grade projects like brick patios and walkways. Type S mortar must have a minimum compressive strength of 1,800 psi. Bag size shall be 70 lbs B. The Contractor shall cross-reference the City’s stock number listed on the Bid/Pricing schedule. The City agrees not to change the stock numbers assigned to each item for the duration of the contract.