What Is Structural Safety in Residential Buildings? A Homeowner's Field Guide — How a house carries its loads safely to the ground — the forces it must resist, who is responsible for safety, the warning signs you can read yourself, and when to call a structural engineer.

A young couple and a structural engineer in hard hats reviewing blueprints beside exposed RCC columns and reinforcement bars on an Indian residential plot, warm late-afternoon golden light casting long shadows across the construction site

You are standing in your half-built house on a Sunday morning. The contractor has gone quiet for the weekend. You walk the slab, testing it with your heel. You peer at the column nearest the staircase and notice a hairline crack running diagonally from one corner — thin as a pencil mark, but unmistakably there. Your stomach tightens. Is this normal? Is my house safe?

You are not an engineer. Nobody handed you a manual. And yet you are about to spend forty, sixty, maybe ninety lakhs on this structure that your family will sleep in for forty years, through monsoons and hot summers and perhaps an earthquake or two. The question "is my home structurally safe?" deserves a clear, honest answer — not jargon, not dismissal, and not blind trust.

This guide is that answer. It is the map for the whole series. Every concept touched here links to a deeper spoke — read this first, then follow whichever thread worries you most.

1. What Structural Safety Actually Means

Structural safety is the ability of a building to carry all expected forces — gravity, wind, earthquake, soil pressure, and the weight of everything and everyone inside — to the ground, with a designed margin of reserve, without collapse or unacceptable distortion, throughout the building's intended lifespan.

Notice three things in that definition. First, all expected forces — not just the weight of the roof but also a crowd on the terrace, a water tank full to the brim, the lateral shove of a tremor. Second, a margin of reserve — engineers do not design to the exact limit; they build in a buffer called the factor of safety, so that a bad batch of concrete or an unexpectedly heavy monsoon downpour does not become a disaster. Third, throughout its intended lifespan — a building that is perfectly safe on day one but corrodes into danger by year twenty has failed its brief.

Structural safety is not the same as durability (how long it lasts), though the two are deeply related. It is not the same as comfort (how the house feels), though a swaying floor or a leaking ceiling certainly degrades comfort. And it is not the same as compliance (whether the drawings are stamped and filed), though compliance is the minimum legal floor.

"A structure is safe when the supply of strength and stiffness permanently exceeds the demand placed upon it — by a margin sufficient to absorb the uncertainties we could not anticipate."

— Matthys Levy and Mario Salvadori, Why Buildings Fall Down, W. W. Norton, 1992

2. The Load Path — How Weight Travels to the Ground

Imagine you set a glass of water on a dining table. The weight of the glass presses down on the tabletop, which transfers it to the table legs, which press into the floor, which rests on the earth. Remove one leg and the table tips. Weaken the top and it sags. The path of the force — from where it acts to where it is finally resisted by the ground — is called the load path.

In a residential building the load path works like this:

1. Slab — the floor or roof slab collects all loads on it (furniture, people, rain water, its own self-weight) and spans them to its supports.

2. Beams — the slab rests on beams (or transfers directly to walls in a flat-slab system). Beams collect the slab loads and carry them to columns or walls at their ends.

3. Columns or load-bearing walls — columns (in an RCC frame) or thick masonry walls (in a load-bearing system) carry the accumulated load downward, storey by storey.

4. Foundation — the base of each column or wall spreads the load into the soil through a footing, raft, or pile.

5. Soil — the soil provides the ultimate reaction that holds the whole building up.

The chain is only as strong as its weakest link. A beautiful column does nothing if the beam-column joint connecting them is poorly built. A well-cast foundation fails if the soil beneath it is not adequately assessed. Every link matters equally.

Lateral loads — earthquake shaking and wind pressure — add a sideways dimension. They must be resisted by shear walls, moment-resistant frames, or a combination, and carried horizontally to the foundations.

Figure 1 — The load path. Every force that enters a building must find a continuous route to the ground. Break any link in this chain and the structure is at risk.

3. The Forces a House Must Resist

A house is not just holding up its own weight. It is the target of at least six distinct families of force, each covered by a dedicated IS code and each addressed in a spoke of this series.

Force family	What it is	IS code reference	Typical design provision
Dead load (DL)	Self-weight of all permanent components — slabs, beams, columns, walls, finishes	IS 875 Part 1	Calculated from material unit weights; typically 3–5 kN/m² for a finished floor slab
Live load (LL)	Movable loads — people, furniture, stored goods, vehicles on parking slabs	IS 875 Part 2	2.0 kN/m² for bedrooms; 3.0 kN/m² for living rooms; 5.0 kN/m² for terraces accessible to vehicles
Wind load (WL)	Pressure and suction from wind, dependent on location and building height	IS 875 Part 3	Varies by zone; a coastal building may see basic wind speed of 50 m/s
Earthquake/seismic load (EL)	Inertial forces from ground shaking, proportional to mass and zone factor	IS 1893 Part 1 (2016)	Zone II–V factors; a Zone IV building may be designed for 0.24g base shear
Soil pressure / settlement	Differential settlement under unequal loads or weak/expansive soil (black-cotton soil)	IS 1904, IS 8009	Allowable bearing capacity specified; differential settlement limited to span/500
Temperature and shrinkage	Concrete shrinks as it cures; thermal cycles create expansion/contraction stresses	IS 456 cl. 6.2	Expansion joints required every 30–45 m; reinforcement to control crack widths

Notice that water — both as flooding and as moisture-driven deterioration — is a silent structural force. Chronic dampness corrodes reinforcement, degrades concrete, and undermines foundations. The why buildings leak guide and the waterproofing failures guide treat this in full.

"The enemy of a concrete building is not the earthquake or the wind — it is water. Given time, water finds every crack, rusts every bar, and silently dismantles what took years to build."

— Field maxim, widely cited among Indian structural engineers on monsoon-affected sites

Earthquake shaking is the single greatest cause of catastrophic residential collapse in India, as Bhuj 2001 brutally demonstrated. The earthquake zones guide explains zone factors, site amplification, and what IS 1893 and IS 13920 require of your home. Wind loads become critical in cyclone-prone coastal states — see the wind loads guide.

4. Two Structural Systems — and Why It Matters

Indian residential construction uses two fundamentally different structural philosophies, often mixed in the same neighbourhood.

Feature	Load-bearing masonry	RCC frame (columns + beams)
How loads travel	Walls carry everything; walls cannot be removed	Columns and beams carry loads; non-structural infill walls can be modified
Typical span	Up to ~4.5 m reliably	5–9 m spans common; longer with prestress
Earthquake performance	Poor in Zones III–V without seismic bands; catastrophic failures in Bhuj	Good if detailed to IS 13920; ductile frames survive large shaking
Common in India	Single-storey rural homes, older urban row houses	All new multi-storey buildings; most urban developer projects
Can you remove a wall?	Never without structural assessment	Infill walls generally yes; load-bearing walls within frame — no
Approximate cost advantage	10–15% cheaper per sq ft for G+1	Higher upfront; better for G+2 and above

The distinction matters enormously when you buy an old property, plan a renovation, or want to add a floor. Removing a wall in a load-bearing house can be catastrophic; opening an infill wall in a properly detailed RCC frame is usually safe. If you do not know which system your house uses, stop any demolition work and call a structural engineer. The load-bearing vs frame structures guide covers diagnosis, permitted modifications, and conversion options.

Figure: Two side-by-side house cross-sections — left shows load-bearing masonry with thick walls carrying roof loads directly; right shows RCC frame with slender columns and beams forming a skeleton with thin infill walls; arrows trace load paths in each; a

Figure 2 — The six forces on a house: gravity pressing down, earthquake shaking laterally, wind pushing from the side, soil reacting upward, water rising through the foundation, and thermal forces expanding and contracting the structure. Each must be accounted for in design.

5. The Factor of Safety — Why Engineers Build in Margin

When a structural engineer says a column can "safely carry" 500 kN, they do not mean it collapses at 501 kN. They mean that under the design combination of loads, the column is far from its ultimate breaking capacity.

IS 456 (the Indian code for plain and reinforced concrete, 2000) uses a limit state design approach with partial safety factors:

Load type	Partial safety factor (IS 456 Table 18)	Why
Dead load (DL) — unfavourable	1.5	Self-weight can be underestimated; construction tolerances
Live load (LL) — unfavourable	1.5	Actual occupancy can exceed design assumption
Wind or earthquake load (WL/EL)	1.5 (when combined with DL alone); 0.9 for some stability checks	Peak loads are probabilistic
Material strength — concrete	Divided by 1.5 (characteristic value used, not mean)	Concrete strength varies batch to batch
Material strength — steel	Divided by 1.15	Yield strength variation and strain uncertainties

In plain language: a column designed for your living-room floor will not fail if you put up a 50% heavier load than specified, because the engineer already multiplied the loads by 1.5 and divided the material strengths by 1.15–1.5 before sizing it. The actual breaking capacity of a well-built column is roughly 2–2.5 times the working load.

This margin is not wasteful — it is the difference between a cracked building and a collapsed one after an unusual event. It also absorbs the real-world variability in materials and workmanship that is unavoidable on Indian construction sites.

"Codes are the collective memory of failures. Every clause was written because something, somewhere, broke."

— Widely attributed to structural engineering educators; paraphrased from the preface tradition of IS codes

6. Who Is Responsible for Your Home's Structural Safety?

Structural safety is a shared responsibility, but the shares are not equal. Here is the roles matrix as it stands under Indian law and professional practice in 2026.

Stakeholder	Primary duty	Legal anchor	What they must do
Structural engineer (licensed)	Design all structural members; certify drawings	IS 1893, IS 13920, IS 456; RERA cl. 14	Analyse loads, choose sections, detail reinforcement, certify structural drawings, review shop drawings
Architect (CoA-registered)	Overall design coordination; integration of structural, MEP, and finishes	Architects Act 1972; RERA	Ensure structural engineer is appointed; review spatial changes that affect structure
RERA-registered builder/developer	Deliver as per sanctioned drawings; disclose structural certificate to buyer	RERA 2016, s. 3 & 14	Cannot alter approved structural scheme without engineer's concurrence; must hand over structural drawings to buyer
Contractor	Execute construction exactly per structural drawings	Contract agreement; NBC 2016 Part 6	Do not substitute materials; maintain cover, spacing, and mix design as specified; not to cut corners on curing
Homeowner/buyer	Observe; verify; commission inspection if in doubt	Consumer Protection Act 2019; RERA warranty	Do not remove structural elements without assessment; report visible distress; do not overload slabs beyond design intent

The legal warranty period under RERA is five years for structural defects. If you notice a defect within five years of possession, report it in writing to the developer. Beyond five years, the duty shifts to you to commission a structural audit.

The construction quality control guide explains what to watch for at each stage — from rebar placement to cube-test results — and how to document concerns without alienating a contractor.

Figure: Responsibility map — a Venn-style diagram with four overlapping circles labelled Structural Engineer, Architect, Builder/Contractor, and Homeowner; each circle lists 3 key duties; the overlapping zone in the centre is labelled

Figure 3 — Structural responsibility is distributed across four parties. Gaps appear when any party assumes someone else is handling a critical check.

7. What You Can See — and What Needs an Expert

One of the most empowering things a homeowner can do is learn to read their building. You will not be able to diagnose a structural problem yourself, but you can spot the signs that warrant a professional visit — and those signs that are cosmetic and harmless.

Visible warning signs — triage guide

Observation	Likely cause	Urgency	Action
Hairline crack in plaster, running roughly horizontal or following masonry joints	Shrinkage or minor thermal movement	Low	Monitor over two monsoon seasons; mark with date
Diagonal crack at corner of door or window opening, 45° direction	Differential settlement or inadequate lintel	Medium	Photograph with scale; consult structural engineer if widening
Stair-step crack following mortar joints in brick wall	Foundation settlement, possibly differential	High	Stop heavy loading; call structural engineer within days
Vertical crack running through brickwork, wide at top	Long-term settlement or overloading	High	Structural assessment needed
Crack wider than 0.3 mm in concrete member (beam, column, slab soffit)	Exceeds IS 456 permissible crack width for moderate exposure; may indicate corrosion or overload	High	Structural engineer immediately
Slab soffit shows rust stains or spalling concrete	Reinforcement corrosion — concrete delaminating	Very high	Do not use space below; structural engineer immediately
Floor springy or bouncy underfoot	Slab deflection may exceed span/250; check beam design	Medium	Structural assessment; check load history
Damp patch at base of wall after monsoon	Waterproofing or DPC failure	Medium (if chronic, affects structure)	Waterproofing specialist; see waterproofing failures guide
Column visibly out of plumb (use a plumb line)	Settlement or construction error	Very high	Structural engineer immediately; evacuate if severe
Building tilts perceptibly (door/windows start jamming)	Foundation movement	Very high	Evacuate; structural engineer and geotech engineer immediately

What you cannot assess by eye includes: actual concrete strength (needs core samples or rebound hammer), rebar cover (needs cover meter), foundation bearing capacity (needs borehole), and crack-depth (needs ultrasonic pulse velocity testing). See the foundation problems guide for what a geotechnical investigation involves and when it is worth the cost.

The cracks guide contains a detailed crack-pattern diagnostic atlas — width, angle, pattern, and position — that will help you describe what you see accurately when you call an engineer.

Figure: Elevation drawing of a two-storey Indian house with five annotated call-outs: (1) diagonal crack at window corner with date-marking tape, (2) stair-step crack in brick wall below slab, (3) rust stain on slab soffit, (4) damp patch at plinth, (5) column visibly leaning with plumb-bob reference line; each call-out colour-coded green/amber/red by urgency

Figure 4 — A homeowner's visual inspection map. Colour-code by urgency: green signs are cosmetic; amber needs monitoring; red needs a structural engineer before the week is out.

8. The Chain of Strength — Why the Weakest Link Governs

The load-path idea leads to a critical practical insight: the overall structural safety of your home is set by its worst-built element, not its best. A slab poured with perfect M25 concrete does nothing for you if the column below it was cast with inadequate cover and thin starter bars by a shortcut-taking contractor.

Indian construction research, including studies following the Bhuj 2001 earthquake, consistently identified the same failure points:

Column-beam joints — the most demanding point to cast correctly; congested reinforcement makes vibrating concrete difficult; honeycombing (voids) here is catastrophic.
Lap splices — where two rebar lengths overlap to transfer force; if located at points of high bending and not staggered, they fail in sequence.
Plinth beam continuity — often omitted or undersized in self-built houses on expansive black-cotton soil; the first line of defence against differential settlement.
Roof slab-parapet junction — poorly waterproofed and under-reinforced; water entry here corrodes the slab edge rebar.
Construction joints — horizontal joints between two concrete pours; must be roughened and wetted; if ignored, the interface plane becomes a crack waiting to happen.

The implication for homeowners: do not let a contractor cut corners on any single element even if the rest looks excellent. The construction quality control guide gives you a pour-by-pour checklist you can use on site.

"A chain of a thousand links can be broken by one weak one. In a building, that weak link is usually not the material — it is the joint."

— Mario Salvadori, Why Buildings Stand Up, W. W. Norton, 1980

Figure: A vertical chain graphic with eight links labelled from top to bottom: Slab, Slab-Beam Connection, Beam, Beam-Column Joint, Column, Column-Footing Joint, Footing, Soil; one link in the middle (Beam-Column Joint) is visibly thinner and coloured red with a caption

Figure 5 — The chain of strength. The capacity of the entire load path is limited by the element built with the least care. Inspecting every link is not over-caution — it is engineering logic.

9. Strength vs Durability — A Strong Building Can Still Decay

A common misconception: "It survived thirty years without a problem, so it must be safe." Strength and durability are related but distinct properties.

Strength is the ability to carry load right now. Durability is the ability to maintain that strength over time, in the face of the environment.

Concrete is alkaline when fresh (pH around 12–13), and this alkalinity passivates the steel reinforcement, protecting it from rust. Over time, two processes degrade this protection:

Carbonation — CO2 from the air reacts with calcium hydroxide in concrete, neutralising alkalinity from the surface inward. In dense, well-cured concrete this front moves at roughly 1 mm per year in mild Indian conditions; in poorly cured, high water-cement ratio concrete it can move faster. When the carbonation front reaches the rebar (say, at 20 mm cover), corrosion begins.
Chloride ingress — particularly near the coast or in areas where poor-quality sand (with salt contamination) was used. Chlorides break down passivation chemically and are more aggressive than carbonation.

Once corrosion begins, steel expands (rust takes up approximately 6–8 times the volume of the original iron), splitting the concrete cover. You see rust stains, then spalling, then exposed bars. By this point, the cross-section of the rebar has reduced — the member is weaker than the engineer designed it to be.

The durable buildings guide covers concrete cover requirements (IS 456 Table 16), water-cement ratio controls, curing duration, and the inspection regime that can catch carbonation and chloride fronts before they reach critical depth.

Durability is also affected by construction quality during execution — particularly curing, which is the single most underrated step on Indian construction sites. A column cast with correct mix design but cured for only three days instead of the IS 456 minimum of fourteen days can lose 20–30% of its intended 28-day strength.

10. The Building's Life Cycle — When to Call an Engineer

Structural safety is not a one-time certification. It is a condition that must be actively maintained across the building's life.

Phase 1: Design (before you build or buy off-plan)

Confirm a licensed structural engineer has been appointed and has stamped drawings.
Ask for the design basis: which earthquake zone, which wind zone, which soil bearing capacity was assumed.
Check that the structural engineer's name appears on drawings (not just the architect's).
For off-plan purchase: RERA mandates that the structural certificate be available to buyers.

Phase 2: Construction (during building)

Be present or arrange a trusted technical person at critical pours: columns, beams, slabs, and the first-level plinth beam.
Insist on cube testing (at least one set of three cubes per 50 m³ of concrete poured, per IS 456).
Check rebar cover with a steel scale before the pour — IS 456 requires a minimum 40 mm cover for moderate exposure conditions.
Review the construction quality control guide for a pour-by-pour protocol.

Phase 3: Occupancy (first five years)

Mark any cracks with a date and width note on first appearance (a marker pen on the wall works).
Keep the waterproofing intact — every roof leak is a structural attack in slow motion.
Do not overload roof terraces with water tanks beyond the design live load (typically 2.0 kN/m² for accessible terraces).
RERA warranty period: report any structural defect in writing within five years.

Phase 4: Ageing (beyond fifteen years)

Commission a structural health audit by a chartered structural engineer. This typically involves visual inspection, rebound hammer testing of concrete strength, half-cell potential test for rebar corrosion, and crack mapping. Typical cost: ₹15,000–₹60,000 for a G+2 house in 2026.
Act on the audit recommendations promptly — repair cost escalates rapidly once corrosion and spalling begin.
If you are adding a floor or modifying the structural layout, a fresh structural analysis is mandatory — never proceed on the contractor's verbal assurance.

11. The Homeowner's Structural Safety Checklist

Use this at three moments: when buying a property, when building new, and as an annual living-in check.

Buying a property

Check	What to look for	Red flag
Structural drawings available	Request from developer/seller	Not available — walk away or commission independent audit
RERA structural certificate	Verify on RERA state portal	Missing; developer refuses to share
Foundation type disclosed	Isolated footing, raft, piles — and soil report	No soil test was done
Age of building and curing quality	Ask neighbours; look for rust stains on soffits	Rust stains, spalling, or honeycombing on columns
Crack pattern inspection	Walk every room; check corners of openings, column bases, slab soffits	Stair-step cracks, structural cracks wider than 0.3 mm
Seismic zone of the site	Check IS 1893 zone map for the district	Zone IV or V building without evident seismic detailing
Structural health audit (resale)	Commission before finalising price	Seller refuses access for inspection

Building new

Stage	Action	Do not skip
Design	Appoint a licensed structural engineer independently	Do not rely on contractor to "arrange" the engineer
Foundation	Witness plinth beam pour; check rebar laps are staggered	First pour sets tone for everything above
Columns	Check vertical bars, links/stirrups spacing, cover blocks before pour	Stirrup spacing governs earthquake ductility (IS 13920)
Beams and slabs	Cube samples taken and sent to lab	Request lab report; target 28-day strength ≥ M20
Post-construction	Obtain completion certificate with structural engineer's endorsement	Necessary for RERA handover and future resale

Living in

Check	Frequency	Action threshold
Mark and date any new crack	After every monsoon	Any crack widening by 1 mm or more in a season — engineer visit
Roof waterproofing inspection	Pre-monsoon every year	Any pooling or seepage — repair before next season
Overload audit	If lifestyle changes (new water tank, heavy gym, library)	Check against design live load before adding heavy loads
Structural health audit	Every 15 years for buildings under 30 years; every 10 years beyond 30 years	Follow audit recommendations within the prioritised timeline
Post-earthquake inspection	After any felt tremor in Zone III–V	Hairline cracks in columns — engineer visit; do not wait

12. Going Deeper — The Spoke Guides

This pillar has introduced every major concept. Each spoke guide develops one of these threads into a full technical deep-dive:

Load-bearing vs RCC Frame Structures — how to identify, modify safely, and convert between systems
Earthquake Zones and Home Design in India — zone map, IS 1893 site factors, ductile detailing, what to ask your engineer
Wind Loads on Buildings in India — cyclone-belt design, IS 875 Part 3, roof uplift, fixing details
What Makes Buildings Crack — India — a crack-pattern atlas: width, angle, pattern, and what each tells you
Waterproofing Failures Explained — why roofs and bathrooms leak, membrane vs crystalline systems, IS 2645 compliance
Why Buildings Leak — India — monsoon pathology, subgrade water, capillary rise, and how to stop it
Foundation Problems — A Homeowner's Guide — soil types, settlement, black-cotton soil, pile vs raft decisions
Construction Quality Control for Homeowners — what to watch at each pour stage, cube tests, cover checks
The Science Behind Durable Buildings in India — carbonation, chlorides, cover, curing, and the 50-year concrete recipe

For the deeper technical companion on structural design methods, load calculation, and IS 456 clause-by-clause walkthrough, see Structural Design Essentials for Indian Homes. For seismic zone mapping with district-level resolution, see Seismic Zones of India. For reading the drawings that encode all these decisions, the Construction Drawings Masterclass is the companion guide.

If you are at the beginning of your design journey and want to explore how AI tools can help you communicate structural preferences to your design team, Studio Matrx DesignAI is built for exactly that conversation.

Author's Note

I have watched buildings go up quickly and I have watched them fail quietly. The failure is almost never dramatic until the very end — it is a rust stain ignored for three monsoons, a contractor who skipped stirrups because nobody was watching, a homeowner who did not know what to look for. The gap is always information.

This guide — and the whole series it anchors — is an attempt to close that gap. Knowing that a stair-step crack is a foundation warning and not just ugly plaster, knowing that concrete needs fourteen days of water to reach its design strength, knowing that the structural engineer is your advocate and not the builder's box-ticking exercise — this knowledge does not make you an engineer, but it makes you a far better client, buyer, and steward of your home.

Buildings that last are buildings that are cared for. And you can only care for something you understand.

Disclaimer

This guide is educational material intended to help homeowners and students understand structural safety concepts. It does not constitute a structural assessment or engineering advice. Every building is unique. If you observe signs of structural distress or are planning structural modifications, engage a licensed structural engineer for a site-specific professional assessment. The information here is based on Indian Standards current as of 2026; always verify against the latest BIS publications.

References

1. Bureau of Indian Standards. IS 456: 2000 — Plain and Reinforced Concrete — Code of Practice (4th rev.). BIS, New Delhi, 2000.

2. Bureau of Indian Standards. IS 875 (Parts 1–5) — Code of Practice for Design Loads (Other than Earthquake) for Buildings and Structures. BIS, New Delhi, 1987 (Parts 1–5; Part 3 revised 2015).

3. Bureau of Indian Standards. IS 1893 (Part 1): 2016 — Criteria for Earthquake Resistant Design of Structures: General Provisions and Buildings (6th rev.). BIS, New Delhi, 2016.

4. Bureau of Indian Standards. IS 13920: 2016 — Ductile Design and Detailing of Reinforced Concrete Structures Subjected to Seismic Forces — Code of Practice (2nd rev.). BIS, New Delhi, 2016.

5. Bureau of Indian Standards. IS 1904: 1986 — Code of Practice for Design and Construction of Foundations in Soils: General Requirements (3rd rev.). BIS, New Delhi, 1986.

6. Bureau of Indian Standards. IS 2645: 2003 — Integral Cement Mortar Waterproofing Treatment — Specification. BIS, New Delhi, 2003.

7. Ministry of Housing and Urban Affairs. National Building Code of India 2016, Vol. 1 and 2. BIS, New Delhi, 2016.

8. Pillai, S. U. and Menon, D. Reinforced Concrete Design (3rd ed.). Tata McGraw-Hill, New Delhi, 2009.

9. Gambhir, M. L. Concrete Technology: Theory and Practice (5th ed.). Tata McGraw-Hill, New Delhi, 2013.

10. Duggal, S. K. Earthquake Resistant Design of Structures (2nd ed.). Oxford University Press, New Delhi, 2013.

11. Salvadori, M. Why Buildings Stand Up: The Strength of Architecture. W. W. Norton, New York, 1980.

12. Levy, M. and Salvadori, M. Why Buildings Fall Down: How Structures Fail. W. W. Norton, New York, 1992.

13. Earthquake Engineering Research Institute (EERI). Bhuj, India Earthquake of January 26, 2001: Reconnaissance Report (Earthquake Spectra Supplement A, Vol. 18). EERI, Oakland, 2002.

14. Arya, A. S., Boen, T. and Ishiyama, Y. Guidelines for Earthquake Resistant Non-Engineered Construction. UNESCO, Paris, 2014.

15. Real Estate (Regulation and Development) Act, 2016, ss. 3, 14 and 19. Government of India, 2016.