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ISO 9001:2015 Certified
Testing, survey &
structural consultancy.
Non-Destructive Testing, structural assessment, pile testing, corrosion investigation, and engineering survey services — assessing the condition, strength, integrity, durability and performance of existing and newly constructed structures without unnecessary damage to structural elements.
01 / 08
Rebound Hammer Test
Concrete Surface Hardness & Strength Assessment
IS 13311 (Part 2)A non-destructive method used to assess the surface hardness and uniformity of concrete and to obtain an indicative assessment of concrete compressive strength.
- Site inspection and test-point selection
- Surface preparation where required
- Rebound hammer testing and recording of values
- Identification of variations in concrete quality
- Technical interpretation and professional test report
Rebound hammer results are generally interpreted along with other investigations and should not be treated as a standalone determination of in-situ compressive strength.
02 / 08
Ultrasonic Pulse Velocity (UPV) Test
Assessment of Concrete Quality & Uniformity
IS 13311 (Part 1)A non-destructive technique used to evaluate the quality, uniformity, continuity, and internal condition of concrete — helping identify areas that may require further investigation.
- Direct, semi-direct, or indirect testing as applicable
- Measurement of ultrasonic pulse velocity
- Test location mapping
- Identification of anomalous areas
- Comprehensive test documentation and reporting
UPV results are commonly considered together with rebound hammer testing, core testing, visual inspection, and other structural investigations where required.
03 / 08
Rebar Scanning / Reinforcement Detection
Reinforcement Location, Cover & Structural Investigation
Identifies the location and approximate depth of reinforcement embedded within RCC structural elements — useful before core cutting, drilling, anchoring, retrofitting or structural modification.
- Reinforcement location
- Approximate concrete cover
- Reinforcement spacing
- Possible reinforcement arrangement
- Suitable locations for drilling or core extraction
Rebar scanning helps minimize the risk of accidentally damaging reinforcement during structural modification and investigation works.
04 / 08
Pile Integrity Test (PIT)
Integrity Assessment of Deep Foundations
ASTM D5882 and applicable Indian standards/guidelinesA non-destructive test used to assess the continuity and integrity of cast-in-situ and other suitable deep foundation piles.
- Pile identification and test preparation
- Pile-head surface preparation
- Low-strain impact testing
- Signal acquisition and analysis
- Pile response interpretation and professional test report
Pile integrity testing is an important investigation tool but should be interpreted by qualified personnel and, where necessary, correlated with construction records and other pile investigation methods.
05 / 08
Corrosion Assessment
RCC Reinforcement Corrosion Investigation
Corrosion of reinforcement is one of the major causes of deterioration in reinforced concrete structures. We identify areas potentially affected by reinforcement corrosion and concrete deterioration.
- Half-cell potential assessment
- Concrete cover measurement
- Visual inspection & reinforcement scanning
- Concrete resistivity assessment, where applicable
- Carbonation and chloride-related investigation, where applicable
- Crack and spalling assessment
06 / 08
Structural Health Assessment
Comprehensive Structural Investigation
A full assessment for existing RCC and steel structures: visual inspection → NDT → structural measurements → material assessment → defect mapping → engineering evaluation → recommendations.
- Structural cracks & concrete deterioration
- Honeycombing, spalling & corrosion
- Deflection & settlement-related distress
- Structural alterations & water leakage-related deterioration
- Foundation-related concerns
- General structural condition
Where required, NDT results can be combined with structural analysis and engineering evaluation.
07 / 08
Engineering Survey Services
Accurate Survey & Site Data Collection
Professional engineering and construction survey services for building, infrastructure, foundation, and structural projects.
- Topographical Survey — mapping of site conditions, levels, features, roads and drainage
- Total Station Survey — high-accuracy layout, dimensional verification and site documentation
- DGPS Survey — coordinate-based survey for accurate positioning and geospatial control
- Pile Point Layout — marking and verification of pile locations per approved drawings
- Building & Structural Measurement — for assessment, renovation, alteration and retrofit projects
- Level & Alignment Survey — floor levels, structural alignment, verticality, settlement checks
08 / 08
Pile Testing Services
Foundation Load & Integrity Investigation
A range of professional pile testing and foundation investigation services, carried out using appropriate equipment, procedures and project-specific requirements.
- Pile Integrity Test (PIT)
- Pile Dynamic Load Test
- High-Strain Dynamic Testing
- PDA Testing
- CAPWAP Analysis
- Vertical Load Test
- Lateral Load Test
Why choose Nilima Design Associates?
ISO 9001:2015 Certified
Our quality management system follows the requirements of ISO 9001:2015.
Engineering Expertise
Our services are supported by experienced structural, civil, geotechnical and testing professionals.
Professional Testing & Reporting
Systematic field data collection, technical analysis and professionally documented reports.
Integrated Engineering Services
NDT, survey, structural consultancy, pile testing and investigation coordinated under a single team.
Project-Specific Approach
Testing locations, methodology and requirements selected according to the structure and applicable standards.
Pan-India Service
Engineering testing, investigation, survey and structural consultancy services for projects across India.
Our key services.
NDT & Structural Testing
Pile & Foundation Testing
Engineering Survey
Structural Consultancy
Professional engineering solutions. Accurate testing. Reliable technical documentation.
ISO 9001:2015 Certified — serving projects Pan-India.