Specifications include, but are not limited to: The City of Portsmouth is seeking proposals from qualified masonry contractors for repairs to the Seybolt and Administration buildings of City Hall. Work will include brick and precast replacement, repointing of precast trim and brick veneer, as well as joint sealant replacement.; A. Rebuilding: 1. Cut out damaged, spalled and deteriorated masonry with care in manner to prevent damage to adjacent remaining materials; cut off full units from joint to joint and in a manner to permit water; store brick for reuse.; 2. Ensure anchors, ties, reinforcing, and flashing are correctly located and built in.; 3. Install built in masonry Work to match and align with existing, with joints and coursing true and level, faces plumb and in line.; 4. Build in openings, accessories and fittings.; 5. Build in new and reclaimed masonry units following procedures for new Work specified in Sections 04 20 00.; B. Repointing: 1. Cut out loose or disintegrated mortar in joints to depths equal to 2-1/2 times their width, but not less than minimum 1/2 inch depth or until sound mortar is reached.; 2. Utilize power tools only after test cuts determine no damage to masonry units’ results.; 3. Do not damage masonry units, spall edge of masonry unit or widen joints; replace any masonry units which become damaged at the Contractor’s expense.; 4. When cutting is complete, remove dust and loose material by brushing with air jet; brush, vacuum or flush joints to remove dirt and loose debris.; 5. Premoisten joint and apply mortar specified in Section 04 20 00; joint surfaces shall be damp but free of standing water.; C. Cleaning Existing Exterior Masonry: 1. Restoration Cleaning: a. Clean surfaces and remove large particles with wood scrapers or non-ferrous wire brush.; b. Unless otherwise indicated, dilute chemical cleaning materials with water to produce solutions of concentration indicated but not greater than that recommended by chemical cleaner manufacturer.; c. Brush coat brick masonry with restoration cleaner, mixed into solution identical to solution required for sample area.; d. Provide second application when required by preliminary test of sample area.; e. Allow sufficient time for solution to remain on masonry and agitate with soft fiber brush or sponge
