We have completed the construction of several villas. After completion, serious structural defects were discovered: a deflection of approximately 5 cm in the inter-floor reinforced concrete slab; cracks in the slab and other elements.
During the construction of the slab between the first and second floors, a decision was made to reduce the thickness of the slab from the design 20 cm to 18 cm.
The formwork for the slab between the first and second floors was held for 28 days, in accordance with the standard concrete curing technology.
During the pouring of the roof slab (between the second and third floors), all temporary supports that held the formwork of the lower slab remained in place to prevent possible collapse under additional load.
The removal of the formwork took place within the established timeframes, without violating the curing deadlines.
Concrete of class K-350 was used for pouring (according to the project). Reinforcement – class TS-420, all marked.
The contractor claims that the problem lies in the project (incorrect reinforcement spacing, insufficient strengthening), not in the construction work. We need an independent structural engineer to conduct a full online technical examination.
What needs to be done:
- Check all structural elements of the building (villas): columns, beams, slabs, foundation.
- Check load calculations, reinforcement schemes, slab thickness, diameter, and spacing of reinforcement.
- Compare the design documentation with the actual execution (based on photos, drawings, measurements).
- Assess the compliance of the structures with building standards (Eurocodes, DBN, SNiP, SNI).
- Determine the cause of the defects:
- Error in design
- Violation of construction technology
- Combination of factors
- Provide a written technical conclusion with reasoned findings and recommendations for addressing the issues.
Expected result:
- Complete written report with technical analysis
- Clear identification of the responsible party (designer or contractor)
- Recommendations for repair and strengthening of structures
- Attached materials:
- Architectural drawings
- Structural drawings (reinforcement, slab schemes, beams, columns)
- Photos from the construction site and current condition (showing defects)
- Measurement of deflection and other deviations. Any technical reports or acts that have already been compiled
- We can provide more information; due to the limited upload capacity of the site, we cannot provide more information
