An older residential home (without a crawl space) later added a two story addition with a basement. Both the original structure and the addition were showing signs of settlement. There was visible damage on the left and rear sections of the house. Helical piers and underpinning brackets were used to stabilize the concrete foundation. Due to lateral forces, cracks appeared in the basement and CFRP straps were installed to further stabilize and strengthen the basement walls.
Project Summary:
- Helical Pile Type: 1.5” Square Shaft transitioning to RS2875.203 pipe extensions
- # of Helical Piles: 15 UP Piles – 3 tiebacks
- Location: Lexington Park, MD
- Installation Depth: 20′ to 25′
- Equipment Used: Portable Hand-Held equipment Excavator
- Challenge/Unique Aspect: Helicals can be used in both tension and compression with different terminations. Underpinning brackets were used to stabilize the foundation working from an excavator from the exterior. Levelift overcame interior access challenges utilizing portable hand-held equipment to work from the in the basement. Three helicals with threaded adapters with CFRP Straps and (4) vertical steel beams (W 4″” X 13″”) with stabilizer brackets were installed to shore the walls and arrest any further movement.
- Danbro Installer: Levelift Foundations LLC
- General Contractor: Levelift Foundations LLC
