Precision in Every Test: SSK Construction & Building Technology Testing Services

All Kind of Testing for amending RCC Building & electrical safety.

Testing – Semi Destructive Test (SDT):

Semi Destructive Test (SDT) as are following:

Fields Tests:

• Physical Techniques:

• Pull out test

• Pull off test

• Torque test

• Penetration test

• Water resistance tests

• Polarization Technique

Testing – Non-Destructive Test (NDT):

During this part of assessment auditor shall perform cover meter study on structural columns and shear walls to verify/determine available reinforcement extent and clear cover of members. Auditor shall also perform NDT tests to verify the quality and strength of concrete. 

Thermo graphic techniques:

• Passive

• Active techniques.

• Proof load techniques:

• Static Proof load

• Dynamic Proof load techniques

Testing – Ferro Scanning of Column, Beam and Slab for Rebar Detection:

Wan test has substantial experience in using Ferro scanning equipment and translating scanned images. Having this type of information available is essential to our clients who plan to drill, cut or core through existing concrete structures to ensure the integrity of the structure is maintained and also the safety of the operator.

By keeping up to date with the latest technology available you can be sure that our teams will have the correct equipment for the job saving you time and money when it comes to concrete scanning. The results from the Ferro scans can usually be viewed on site using real time technology which provides designers and engineers with the information they need when they need it. Our Ferro scanning service can be used to for many applications.

Examples include:

• Determining the concrete cover of existing slabs, walls, columns, etc.

• Determining location and configuration of steel reinforcement

• Detailing an image of a concrete slab to avoid rebar or electrical conduit prior to coring activities

• Identifying the location of post-tension cables

• Determining thickness of concrete slabs

• Thermal, Insulation & Earth test

Testing – Rebar test (Tensile strength test):

Rebar test (Tensile strength test):

Tensile Testing of Metals is a destructive test process that provides information about the tensile strength, yield strength and ductility of the material. Laboratory Testing Inc. near Philadelphia, PA in the USA performs the tensile test in accordance with industry standards and specifications, including ASTM tensile test methods. This process is also known as a tensile strength test or tension test.

Chemical Techniques:

• Qualitative methods: –

• PH test and Rainbow test

• Quantitative methods: -Alkali test,

• Chloride test and Electro analytical tests

• Biological Techniques:

• Biological macroscopic techniques.

• Biological microscopic techniques.

• Laboratory Tests:

• Physical Techniques:

• Material strength tests.

• Test of material elastic characteristic.

• Test of material water absorbability.

• Test of material porosity.

• Test of material freeze resistance

• Test of material abrasion resistance

• Computer tomography.

• Chemical Techniques:

• Electro analytical techniques

• Spectral analysis.

• Chromatography techniques.

• Biological Techniques:

• Biological microscopic techniques.

  “In Vitro” techniques.

The Non-Destructive Test (NDT) Techniques as are following:

• Optical Techniques:

• Visual inspection

• Microscopy

• Geodesy

• CCTV

• Acoustic Techniques:

• Impulse response

• Impact echo

• Parallel seismic

• Ultrasonic

• Ultrasonic tomography

• Acoustic emission.

• Radiological Techniques:

• Radiographic techniques

• Computer tomography.

• Electro and Electromagnetic techniques:

• Electromagnetic induction

• Radar techniques

• Electrochemical techniques.

• Laser techniques:

• Laser static

• Laser dynamic techniques.

• Sclera metric techniques:

• Static

• Dynamic techniques.

Range of tensile testing capabilities:

• Wedge & axial tensile.

• Full-size yield strength of fasteners.

• Testing of machined specimens.

• Full-size tubing.

• Full-size rebar.

• Elevated temperature tensile testing.

• Tensile testing of welds and castings.

The Non-Destructive Test (NDT) Techniques as are following:

• Optical Techniques:

• Visual inspection

• Microscopy

• Geodesy

Test methods/ Specifications:

• Wedge & axial tensile.

• Full-size yield strength of fasteners.

• Testing of machined specimens.

• Full-size tubing.

• Full-size rebar.

• Elevated temperature tensile testing.

• Tensile testing of welds and castings.

Test methods/ Specifications:

Test methods/ Specifications:

The Tensile strength test process:

Material strength testing, using the tensile or tension test method, involves applying an ever-increasing load to a test sample up to the point of failure. The process creates a stress/strain curve showing how the material reacts throughout the tensile test. The data generated during tensile testing is used to determine mechanical properties of materials and provides the following quantitative measurements:

Tensile strength, also known as Ultimate Tensile Strength (UTS), is the maximum tensile stress carried by the specimen, defined as the maximum load divided by the original cross-sectional area of the test sample.

Yield strength is the stress at which time permanent (plastic) deformation or yielding is observed to begin.

Ductility measurements are typically elongation, defined as the strain at, or after, the point of fracture, and reduction of area after the fracture of the test sample.

Testing – Thermal, Insulation & Earth test:

Thermo graphic testing:

Thermo graphic testing is a non-destructive test method that may be used to detect poor connections, unbalanced loads, deteriorated insulation, or other potential problems in energized electrical components. These problems may lead to excess power use, increased maintenance costs, or catastrophic equipment failure resulting in unscheduled service interruptions, equipment damage, or other problems.

Thermo graphic testing of electrical equipment:

A useful addition to a preventative maintenance program, Care labs can carry out a thermo graphic scan and Thermo graphic Testing of all areas likely to be running too hot or too cold. The number one application for infrared thermograph globally is electrical applications.80% of electrical faults are not visible. Thermal imaging is the technique for making invisible infrared radiation visible. Thermal images capture fully radiometric infrared images using IR-Fusion® technology, photographic images and will be included in a report.

How does thermography work:

Thermo graphic also called infrared inspection is based upon the sensing of heat emitted from the surface of an object in the form of infrared radiation. Test instruments are used to detect and convert the infrared radiation into either a temperature value or a thermal image, which can be used to assess the thermal condition of the object at the time of measurement. An infrared camera is one common type of an infrared thermal imaging device.

Our Logistical Equipment’s for DEA & Testing

We work with the following necessary Tools given below. All the equipment’s have 05 different sets.

Initial Inspection – Structural

Document Review:

During this part of inspection, auditor checks the available documents in presence of factory Engineer/representative to check the availability of documents based on which the Structural Integrity Assessment will proceed. Following key documents shall be reviewed:

• Approval plan,

• Occupancy certificate,

• Full set of original Architectural drawings/as built Architectural drawings

• Full set of original Structural drawings/as built Structural drawings,

• Geotechnical report,

• Machine lay out plan,

• Floor load plan,

• Previous assessment report (if any),

• Material test report etc.

Physical Observation:

During this part of assessment, auditor shall travel every corner of the factory and collect data regarding nonconformities present in all key structural elements and collect photographic evidence as well. The major issues which shall be covered in the physical observation are as follows:

• Structural system

• Verification of as built condition with existing structural/ architectural drawing.

• Load path and load carrying system

• Major/progressive distress in key structural element

• Foundation settlement

• Dampness, effloresces, standing water on roof

• Expansion joint condition (if any)

• Existing loading condition

• Identification of overloading area

• Condition of façade system

• Undocumented horizontal/vertical extension

• Availability of posted load plan and load marking

Details Engineering Assessment (DEA):

Details Engineering Assessment (DEA):

1. Resources Management

2. Assessment Procedure:

• Physical Observation

• Investigative Studies

• Inferences

• Strengthening Measures

• Concluding Remarks

1. 1. a) Physical Observation

• Any sign of settlement

• Any sign of distress in any key structural elements

• Any kind of dampness/standing water.

• Any kind of corrosion.

• Any kind of twisting/rupture/ sagging in the structural members.

• Any other defects in the any structural elements.

1. Current loading condition in the structure (at each floor) Assessment Procedure

1. 1. b) Investigative Studies

• Dimensional measurement of structural members

Testing:

SDT:

• Semi-Destructive test to access of in-situ concrete in RC footings, Columns, Beams and slabs

NDT:

• Ultrasonic pulse velocity test on RC columns and beams

• Rebound Hammer test on RC slabs

• Cover meter studies to map the disposing and dia of peripheral rebar’s in RC members

• Theoretical analysis to verify the structural adequacy of existing members for present level loading

1. 1. c) Inferences

• Inferences based on the above investigative studies.

1. 1. d) Strengthening Measures

• Retrofitting Scheme

1. 1. e) Concluding Remarks

• Recommendation(s) based on results of DEA–including restriction of loading, restriction on vertical extension.

2.     Resources Management:

• Six members required in each DEA team and they will divide into four groups under one team leader.

Group A:

Member:

• Structural engineer

• CAD operator

Responsibilities:

• Dimensional measurement of structural members.

• Prepared as-built Structural drawing.

Group B:

Member:

• Structural engineer.

• Two labors from client end.

Responsibilities:

• Semi-Destructive test (core samples) to access of in-situ concrete in RC footings, Columns, Beams and slabs.

• Ultrasonic pulse velocity test on RC columns and beams.

Group C:

• Team leader

• Structural engineer

• Responsibilities:

• Cover meter studies to map the disposing and dia of peripheral rebar’s in RC members.

• Rebound Hammer test on RC slabs.