P.S. 159 Queens Flood Elimination & Structural Rehabilitation

Key Challenges

• Construction performed within an occupied school, requiring controlled access, student safety measures, and coordinated work sequencing.
• Flood mitigation improvements integrated with existing foundation and drainage systems to improve long-term building performance.
• Detailed structural and waterproofing work at areaways and foundation walls to eliminate water infiltration.
• Coordination of masonry repairs, concrete restoration, and cellar rehabilitation within tight existing conditions.

Detailed Scope of Work

• Performed selective demolition and excavation to prepare for new flood mitigation work.
• Installed new asphalt paving, concrete curbs, drainage leaders, and courtyard improvements.
• Completed masonry repointing and façade rehabilitation including brick veneer joint repairs.
• Performed CMU infill construction and boiler area structural upgrades.
• Completed concrete cheek wall repairs and structural spall repairs to restore deteriorated building elements.
• Installed waterproofing systems at interior and exterior foundation walls and areaways to improve flood protection.
• Conducted cellar rehabilitation including drainage improvements, interior elevations, and coordinated mechanical space upgrades.
• Maintained continuous safety oversight, inspections, closeout documentation, and final project turnover in accordance with NYCSCA standards.