Special/Critical Inspections

Concrete Inspection

Concrete inspection may primarily invoke images of cylinders being prepared,but the variety and depth of concrete inspections required for a project can be vast. To satisfy codes and job specifications, design professionals may require the special inspection of concrete construction procedures before, during, and after placement..

The number of code-mandated tests is based on the square footage of the project,and the locations of such tests are to be uniformly distributed throughout the project area where the loads would be imposed to the soils. Depending on the condition of the soils, additional testing may also be required by the design professionals to evaluate slope stability, stratigraphy, soil-bearing capacity, and/or instability due to liquefaction The number of code-mandated tests is based on the square footage of the project,and the locations of such tests are to be uniformly distributed throughout the project area where the loads would be imposed to the soils. Depending on the condition of the soils, additional testing may also be required by the design professionals to evaluate slope stability, stratigraphy, soil-bearing capacity, and/or instability due to liquefaction

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Services
Some of the inspection services and field tests that can be performed are:
- Concrete Batch Plant Inspection
- Concrete Field Inspection and Tests (Sampling, Slump, Air, Weight)
- Concrete Placement
- Concrete Reinforcement Inspection
- Concrete Precast Shop Inspection
- Concrete Precast Installation Inspection
- Pre-stressed Concrete Inspection (Shop/ Field)
- Concrete Temperature Monitoring
- Concrete Maturity Determination
- Concrete Coring
- Concrete Microwave Testing
- Concrete Chloride Ion Testing
- Concrete Straight Edge Testing
- Concrete Smoothness Testing
- Concrete Floor Flatness/ Levelness (FfFl) Testing (ASTM E1155)
Code Considerations
Typical Concrete references in project specifications:
- New York State DOT Section 500: Portland Cement Concrete Specifications.
- New York City Building Code.
- American Concrete Institute Standard (ACI).
- ASTM C31 / AASHTO T23: Standard Practice for Making and Curing Concrete Test Specimens in the Field.
- ASTM C 138 / AASHTO T121: Test Method for Density (Unit Weight), Yield, and Air Content (Gravimetric) of Concrete.
- ASTM C143 / AASHTO T119: Test Method for Slump of Hydraulic-Cement Concrete.
- ASTM C172 / AASHTO R60: Practice for Sampling Freshly Mixed Concrete.
- ASTM C173 / AASHTO T196: Test Method for Air Content of Freshly Mixed Concrete by the Volumetric Method.
- Underpinning may be required as part of as part of the excavation process. AEIS engineers will ensure the underpinning system is installed as designed.
- ASTM C231 AASHTO T152: Test Method for Air Content of Freshly Mixed Concrete by the Pressure Method.
- ASTM C1064: Test Method for Temperature of Freshly Mixed Hydraulic-Cement Concrete.
- ACI 117: Specification for Tolerance for Concrete Construction and Materials.
- ACI 305R: Hot Weather Concreting.
- ACI 306R: Cold Weather Concreting.
- ACI 318: Building Code Requirements for Structural Concrete.
- ACI 347: Guide to Formwork for Concrete.
New York City Building Code section references (Partial listing):
- 2008 NYC BC 1704.4 Concrete Construction.
- 2014 NYC BC 1704.4 Concrete Construction.
- 2008 NYC BC Table 1704.4 Required Verification and Inspection of Concrete Construction.
- 2014 NYC BC Table 1704.4 Required Verification and Inspection of Concrete Construction.
- 2008 NYC BC Chapter 19: Concrete.
- 2014 NYC BC Chapter 19: Concrete.

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