What we do

Condition assessment is the systematic investigation of an existing structure to establish its present state — the quality and strength of its concrete, the location, cover and condition of its reinforcement, the extent of cracking, corrosion, seepage and deterioration, and whether the structure as built matches the drawings. TeXeL combines visual survey, dimensional verification, non-destructive and semi-destructive testing (rebound hammer, ultrasonic pulse velocity, cover-meter and rebar scanning, half-cell potential, carbonation, cores and chemical analysis), laboratory testing through NABL-accredited laboratories and engineering interpretation into a single signed report with prioritised recommendations.

We assess occupied buildings, industrial plants, institutional campuses, heritage and stone structures, stalled or abandoned construction sites and structures proposed for vertical extension or change of use. Recent assignments include a 1,200-column stadium structure in Jaipur after a multi-year construction stoppage, a telecom facility building in Meerut, institutional buildings at MNIT Jaipur, a basement-plus-three building for structural audit and a PWD building proposed for additional floors.

Why hire TeXeL

• Led by a PhD structural engineer — Dr Rohit Yadav (PhD, MTech Structural Engineering, MNIT Jaipur) personally directs the department; every report is reviewed and signed by a responsible structural engineer.
• Testing that is interpreted, not just tabulated — rebound and UPV readings are indicators, not strength; we correlate them with cores, cover, exposure and drawings before we say anything about capacity.
• Destructive tests used with care — core and reinforcement sampling locations are scanned, approved and reinstated with non-shrink repair material; nothing is drilled through steel or starter bars.
• Defects mapped, not described — AutoCAD defect-mapping drawings with legends show the owner exactly where each crack, hollow, spall or seepage is.
• Straight to a decision — recommendations are classified as immediate, short-term and routine/monitoring, and tie directly into TeXeL's strengthening design, repair supervision and structural-design departments.
• Government-grade practice — procedures follow IS 456, IS 13311, IS 516, ASTM C876, NBC and CPWD practice; we routinely coordinate third-party vetting by IIT/NIT.

How we work

1. Document review & planning — drawings, design data, age, alteration and repair history, earlier tests; joint walk-through to agree access, element IDs and test distribution.
2. Visual condition survey — columns, beams, slabs, walls, staircases and accessible members inspected for cracking, spalling, honeycombing, corrosion staining, deflection, dampness and previous repairs; photographed against element identifiers.
3. Verification — member sizes, structural arrangement and visible deviations compared with drawings; undocumented alterations recorded; unit-wise tapping of members for hollowness and debonding.
4. Field testing — rebound hammer and UPV at representative and distress-focused locations; cover-meter / rebar scanning; half-cell potential and carbonation depth where corrosion is suspected.
5. Sampling & laboratory testing — concrete cores for compressive strength, chemical analysis (chloride, sulphate, pH), reinforcement samples for physical and chemical properties — all through NABL-accredited laboratories.
6. Engineering assessment — correlation of all results, condition classification of members, separation of localised from systemic distress, screening of adequacy of critical members and, where required, analytical modelling under present and proposed loads.
7. Reporting — draft report for one consolidated round of comments, then the final signed report. Any unsafe condition seen on site is reported to the owner immediately, without waiting for the report.

Scope of work

• Visual and photographic condition survey with defect mapping drawings
• Dimensional and as-built verification against drawings
• NDT programme — rebound hammer, UPV, cover meter / rebar locator, half-cell potential, carbonation
• Core extraction and compressive strength; chemical analysis of concrete; reinforcement testing
• Analytical modelling and adequacy screening under existing / proposed loads
• Prioritised recommendations — repair, protection, monitoring, load restriction, further investigation
• Technical support for third-party vetting by IIT / NIT

Deliverables

• Structural condition assessment report signed by the responsible structural engineer
• Element register, photographic record and defect-mapping drawings
• Test-location plan, field sheets and NABL laboratory reports
• Interpretation of strength, quality, corrosion probability, carbonation and chemical results
• Condition-based recommendations (immediate / short-term / routine) and, where the evidence supports it, a conditional structural safety and serviceability opinion

What we need from you

• Available drawings, design data, building age, use and alteration / repair history
• Safe access — ladders, scaffolding or MEWP where needed; removal of false ceilings and finishes at test points
• Location of concealed services before any coring; power and water at site
• One authorised representative to approve destructive test locations

Limitations we state up front

Assessment is sample-based; concealed and inaccessible portions are inferred by engineering judgement. Foundations are assessed only where the owner can expose them. Repair drawings, BOQ and supervision are offered as separate services (see Repair & Rehabilitation).

What we do

A full-scale load test applies a known test load to a real structural element — a floor slab, a beam, a roof, a bridge deck — and measures its deflection, recovery and cracking against code acceptance criteria. It is the most direct evidence of structural adequacy available and is used where analysis is inconclusive: structures without drawings, suspect concrete, repaired or strengthened members, change of use to heavier loads, precast or proprietary systems and bridges or culverts due for load rating. TeXeL plans the test, designs the loading and safety arrangements, instruments the structure, conducts the test and reports pass / fail against IS 456 (buildings) and IRC SP 37 / IRC SP 51 (bridges).

Why hire TeXeL

• Engineered, safe tests — predicted deflections, crack checks and emergency propping are designed before any load goes on; the test is stopped if behaviour departs from prediction.
• Precise measurement — dial gauges / LVDTs at mid-span and supports, crack-width monitoring, temperature correction, 24-hour sustained-load readings and recovery measurement.
• Correct loading — water tanks, sandbags, cement bags or loaded trucks sized to the code test load (e.g. 1.25 × DL + 1.25 × LL less self-weight for RCC floors); bridge tests with calibrated vehicles at specified positions.
• Clear verdict — results compared with the deflection and recovery limits of the code; where a member fails, we recommend strengthening and can design it.
• Integrated with NDT — load tests are combined with cores, UPV and rebar scanning when the cause of poor behaviour must be found.

How we work

1. Pre-test study — drawings or on-site measurement, material data, prediction of deflections and crack loads, identification of critical panels / spans.
2. Test plan & safety — loading method, increments, instrumentation layout, propping and evacuation plan agreed with the owner.
3. Instrumentation — gauges fixed at critical points; initial readings; environmental monitoring.
4. Loading — load applied in stages with readings at each; full test load held for 24 hours (buildings) or specified durations (bridges).
5. Unloading & recovery — readings after 24 hours of unloading; crack survey.
6. Report — deflection and recovery plots, acceptance assessment, photographs, recommendations.

Scope of work

• Load testing of RCC and PT slabs, beams, cantilevers, roofs and staircases
• Load testing of precast elements and proprietary flooring systems
• Bridge and culvert load tests with calibrated vehicles; deflection and strain measurement
• Load rating of existing bridges
• Proof testing of strengthened / repaired members

Deliverables

• Test plan and safety method statement
• Instrumentation layout and raw readings
• Load test report — load-deflection curves, recovery, crack observations, code acceptance and recommendations

What we need from you

• Drawings or access for measurement; intended loads
• Vacant floor / span and the floor below during the test; water or load materials and labour (or we arrange them)
• Traffic management and permissions for bridge tests

Codes & references

IS 456 cl. 17.6 (load tests on structures), IS 1200 / IS 2911 (where piles are involved), IRC SP 37, IRC SP 51, IRC 6, BS 8110 Part 2, ACI 437.

What we do

Structural health monitoring (SHM) tracks the behaviour of a structure over weeks, months or years instead of judging it from a single visit. TeXeL designs the monitoring scheme, installs crack gauges, tilt meters, settlement points, strain gauges, vibration sensors and displacement sensors, collects readings manually or through data loggers, and interprets the trends against alert and action limits set by our structural engineers. Monitoring is used for distressed buildings awaiting repair, structures adjacent to construction or tunnelling, bridges and flyovers, water tanks, chimneys and silos, heritage structures, and after strengthening to confirm the repair is working.

Why hire TeXeL

• Engineers set the limits — alert and action thresholds come from analysis of the actual structure, not from generic values, so alarms mean something.
• Simple where simple works — tell-tales, demountable crack gauges and precise levelling are often enough; we scale to wireless sensors and continuous logging only where the risk justifies it.
• Trend, not snapshot — periodic reports show movement against time, temperature and construction events, separating seasonal effects from real distress.
• Linked to action — when a limit is crossed we tell you what to do: investigate, prop, restrict load, repair — and our assessment and repair teams can do it.
• Documentary protection — baseline and ongoing records are invaluable in disputes with adjacent developers, insurers or contractors.

How we work

1. Baseline assessment — condition survey, crack mapping and identification of what must be monitored and why.
2. Monitoring design — parameters, sensor types, locations, frequency, alert / action limits and reporting cadence.
3. Installation — gauges, targets, sensors and loggers fixed; initial readings taken.
4. Monitoring — manual readings on schedule or automated logging with remote access; immediate notification if limits are crossed.
5. Reporting — periodic trend reports with interpretation; final report and recommendation at the end of the monitoring period.

Scope of work

• Crack-width monitoring (tell-tales, demountable gauges, electronic crack meters)
• Settlement and tilt monitoring (precise levelling, tilt plates, inclinometers)
• Strain and deflection monitoring of beams, slabs, girders and cables
• Vibration monitoring near blasting, piling, traffic and machinery
• Corrosion monitoring of reinforcement
• Pre-construction condition surveys of adjacent properties and post-construction comparison
• Post-repair performance monitoring

Deliverables

• Baseline condition and crack-mapping report
• Monitoring plan with sensor layout and alert / action limits
• Periodic monitoring reports with trend plots and interpretation
• Event alerts and recommended actions
• Final monitoring report

What we need from you

• Reason for monitoring and duration; construction programme of any adjacent works
• Access to sensor locations for installation and readings; power / network for loggers if automated
• Protection of installed instruments from disturbance

What we do

A structural audit is a formal engineering examination of an existing structure to establish whether it is safe and serviceable for its present or proposed use, concluding in a signed report and, where the findings allow, a structural stability certificate. TeXeL audits RCC buildings, load-bearing and stone structures, industrial sheds and pre-engineered buildings, and buildings proposed for vertical extension or change of occupancy. The audit combines condition assessment and testing with structural analysis of the actual structure — its measured member sizes, in-situ strengths and real loads — against IS 456, IS 1893, IS 875, IS 800 and NBC.

Typical triggers: municipal or statutory requirement for buildings above a certain age; occupancy certificate for a newly completed building whose construction was not supervised; feasibility of adding floors (we have audited PWD and MNIT buildings for exactly this); insurance or lender requirements; stability certificate for PEB sheds, warehouses and factories; post-fire, post-earthquake or post-flood checks; and purchase due diligence.

Why hire TeXeL

• A certificate backed by analysis — we do not certify from a walk-through. Every certificate rests on tested material properties, verified geometry and a documented analysis.
• Conditional where it must be — if strengthening is needed, we say so; the certificate is issued subject to implementation of the recommended measures, and we design and supervise those measures if asked.
• Steel and PEB expertise — our structural department designs steel buildings and connections, so PEB audits examine the frame, bracing, connections, purlins, cladding fixings and foundations, not just the main frame.
• Accepted by authorities — reports are prepared to NBC / CPWD practice and signed by a qualified structural engineer; we provide technical support for third-party vetting by IIT / NIT where the authority asks for it.
• Fast, defined programme — a typical single-building audit completes in 15–20 working days from mobilisation.

How we work

1. Records & brief — purpose of the audit, drawings, history, authority requirements.
2. Condition assessment — visual survey, as-built verification, NDT (rebound, UPV, rebar scan), cores where required, defect mapping and photographs.
3. Structural modelling — analytical model built from verified geometry, measured strengths and actual loads; checked under present loads and any proposed additional loads (extra floors, new equipment, change of use) including seismic and wind.
4. Adequacy assessment — member-by-member capacity check; identification of deficient elements and the strengthening needed.
5. Report & certificate — audit report with findings, analysis, recommendations and the structural stability / feasibility certificate (unconditional, or conditional on strengthening).
6. Follow-through (optional) — strengthening design, GFC drawings and 5–7 site visits during execution, after which the final certificate is released.

Scope of work

• Structural audit of RCC, masonry, stone, steel and PEB structures
• Feasibility study and certification for vertical extension or change of use
• Stability certificate for occupancy, statutory, insurance, lender or sale requirements
• Post-disaster (fire, earthquake, flood) structural safety assessment
• Strengthening recommendations with concept drawings; detailed design as an add-on
• Coordination with IIT / NIT for third-party vetting

Deliverables

• Structural audit report — findings, test results, analysis, adequacy, recommendations
• Defect-mapping drawings and photographic record
• Structural stability / feasibility certificate signed by the responsible structural engineer
• Strengthening concept drawings where required

What we need from you

• Purpose of the audit and the format any authority requires
• Drawings and records where available; otherwise we measure on site
• Access to all floors, roof and accessible structural members; removal of finishes at test points
• Help in exposing foundations where foundation assessment is required

Codes & tools

IS 456, IS 875, IS 1893, IS 13920, IS 800, IS 1905, IS 13311, IS 516, NBC 2016, CPWD guidelines; ETABS / STAAD.Pro, AutoCAD.

What we do

Repair and rehabilitation turns the findings of an assessment or audit into a safe, durable structure. TeXeL designs and details structural repair (crack injection, concrete replacement, corrosion treatment, re-plastering and protective coatings), strengthening and retrofitting (jacketing, steel plate bonding, FRP wrapping, additional beams and girders, new supports and foundations, seismic retrofit) and rehabilitation of heritage, stone and masonry structures. We prepare the method statement and sequence — including temporary propping and load relief — supervise execution through planned site visits and, where required, arrange execution through experienced repair contractors under our supervision.

Recent work includes feasibility and girder-strengthening design for a cracked stone slab at a heritage palace in Jaipur, strengthening schemes for buildings taking additional floors at MNIT Jaipur and PWD, repair and renovation of a distressed basement with beam strengthening, and retrofit of institutional buildings in Sikkim.

Why hire TeXeL

• Diagnosis before prescription — repair follows our own assessment and analysis, so we fix the cause (overload, corrosion, poor concrete, settlement, missing detailing) rather than re-plastering the symptom.
• Structural engineers who design new buildings — strengthening is sized by analysis, detailed to IS 15988 / IS 13935 and checked for constructability with the executing agency.
• Practical, buildable schemes — we prefer solutions that can be executed in an occupied building with minimum disruption: external jacketing, steel sections, FRP, girders under existing slabs.
• Construction procedure included — propping, sequence, material specifications and hold points are written down; the contractor does not have to guess.
• We stay until it is done — 4–7 site visits during execution are built into every strengthening engagement, with a completion note or certificate at the end.
• Heritage sensitivity — stone and lime-mortar structures are strengthened with compatible, reversible interventions wherever possible.

How we work

1. Inspection & diagnosis — understand the structural system, the cause of distress and the options to strengthen (using existing assessment data or a fresh survey).
2. Option study — alternative repair / strengthening schemes compared on safety, cost, disruption and durability.
3. Design & drawings — analysis, detailed strengthening drawings, material specifications and BOQ.
4. Method statement — temporary works, sequence, curing / bonding requirements, quality checks and safety measures.
5. Execution support — contractor briefing, planned site visits at critical stages, inspection of surface preparation, anchors, FRP / plates and grouting; resolution of site conditions.
6. Completion — post-repair inspection and, where the engagement requires, a stability certificate for the strengthened structure.

Scope of work

• Structural repair — crack injection, spall repair, micro-concrete, corrosion inhibition, re-alkalisation, protective coatings
• Strengthening — RCC / steel jacketing, plate bonding, CFRP / GFRP wrapping, additional beams, girders and columns, foundation strengthening and underpinning
• Seismic retrofit of RCC and masonry buildings
• Heritage and stone structure stabilisation
• Waterproofing and durability rehabilitation of roofs, basements, tanks and wet areas
• Repair & renovation estimates, BOQ and tender support; supervised execution through repair contractors

Deliverables

• Repair / strengthening design report and calculations
• Detailed drawings with material specifications
• Method statement and construction sequence
• BOQ and estimate
• Site-visit reports and post-repair completion note / certificate

What we need from you

• Assessment / audit report and drawings if available; otherwise we inspect first
• Intended future use and loads
• Access and permission for exposure of members where needed
• Executing agency details for coordination (or let us propose one)

Codes & references

IS 15988 (seismic evaluation and strengthening of RCC buildings), IS 13935 (repair and seismic strengthening), IS 13828 / IS 4326 (masonry), IS 456, IS 1893, ACI 440 / ACI 562, CPWD Handbook on Repair & Rehabilitation of RCC buildings.

What we do

Non-destructive and semi-destructive testing tells us the real condition of concrete and steel inside an existing structure without damaging it. TeXeL carries out complete NDT programmes — from a dozen locations in a single house to 1,500-location rebound and UPV campaigns with 150 cores on a stalled stadium — using calibrated equipment, trained technicians and NABL-accredited laboratories for everything within their accredited scope. Testing is planned by a structural engineer, performed to IS 13311, IS 516 and ASTM procedures, and interpreted in the context of the structure, so that a low rebound number or a slow pulse velocity is explained, not just recorded.

Why hire TeXeL

• Engineers choose the locations — tests are placed where they answer a question: distress zones, representative members, different pour dates, exposure conditions.
• Correlated, not stand-alone — rebound hammer and UPV are indicators; we correlate them with cores and cover data before drawing a conclusion about strength or capacity.
• Safe destructive sampling — every core and reinforcement sample location is scanned for bars and services, approved by the owner and reinstated with non-shrink structural repair material.
• Traceable records — unique test IDs, photographs, calibration status and laboratory accreditation recorded for each result.
• Scales to any size — single buildings to campus-wide or infrastructure programmes with scaffolding, access equipment and DG power arranged by us.

Tests we perform

• Rebound (Schmidt) hammer — surface hardness and uniformity; indicative strength (IS 13311 Part 2)
• Ultrasonic Pulse Velocity (UPV) — internal integrity, voids, honeycombing, cracks, uniformity (IS 13311 Part 1)
• Cover meter / rebar locator / profometer — cover, bar location, diameter and spacing
• Half-cell potential — probability of reinforcement corrosion (ASTM C876)
• Carbonation depth — phenolphthalein test at drilled holes or cores
• Core extraction & compressive strength — actual in-situ strength, density, visual examination (IS 516)
• Chemical analysis of concrete — chloride, sulphate, pH, cement content
• Reinforcement sampling — tensile, bend/re-bend and chemical composition
• Resistivity, pull-off / pull-out, crack-width and tapping surveys as required
• Load testing of slabs, beams and bridges — see our Full Load Test service

How we work

1. Test plan — objectives, elements, quantities and locations agreed after a walk-through and review of records.
2. Field testing — surface preparation, calibrated instruments, recorded orientation and path lengths, photographs at every location.
3. Sampling — cores and steel samples from approved, scanned locations; holes made good.
4. Laboratory testing — NABL-accredited laboratory for strength, chemical and reinforcement tests; 7–10 working days typical.
5. Interpretation & report — results tabulated against element IDs, correlated, mapped and explained with clear next-step recommendations.

Deliverables

• Test-location plan / schematic and field observation sheets
• Results tables for each test with element references and photographs
• NABL laboratory reports
• Interpretation report — strength estimate, uniformity, corrosion probability, carbonation and chemical attack, with recommendations for further investigation, repair or monitoring

What we need from you

• Drawings or sketches to identify elements; records of concrete grade and pour dates where available
• Safe access to test locations; removal of plaster / finishes at test points
• Confirmation of concealed services before coring; power and water

Standards

IS 13311 (Parts 1 & 2), IS 516, IS 1199, IS 456, ASTM C876, BS 1881, ACI 228, IS 1786 / IS 1608 for reinforcement.