5 PILLARS.
60 HARDENED METRICS.

Metered annual EUI (kWh/m²/yr) from DISCOM bills or BMS export at 12 months post-occupancy, benchmarked against ECBC 2017 climate-zone target EUI. Metered data must be stamped by DISCOM or exported from a BMS with tamper-evident audit log.…

Wall and roof U-values verified by third-party thermographic survey per ASTM C1060 at structural completion stage, before internal finishes are applied. The thermographer must hold a Level II infrared thermogra…

SRI measured on installed roof surface using calibrated reflectometer per ASTM E1980 at commissioning and again at 24 months post-occupancy. Minimum SRI 78 for low-slope roofs. If SRI at 24 months has dropped m…

ECBC 2017 climate-zone SHGC and WWR compliance verified. Additionally scored on orientation-differentiated WWR — east and west facades are penalised for excessive glazing (>25% WWR on east or west = automatic deduction) while north and south are…

As-built LPD (W/m²) measured by independent electrical inspector using a calibrated power logger at each circuit breaker, not calculated from fixture schedules. Measurement at full occupancy operating condition.…

BEE ISEER star label required as minimum — minimum 3-star for all HVAC and refrigeration equipment. Additionally, in-situ seasonal COP measured using a clamp meter and calibrated BTU meter over a representative peak-season month at Stage 3 — actual…

Metered kWh generated from on-site renewable sources divided by total annual metered consumption, submitted at 12 months. Generation meter must be a bi-directional net meter installed by the DISCOM or an independently certified sub-meter with tamper…

Annual kgCO₂e avoided versus state grid baseline, calculated using CEA State-wise Grid Emission Factor (current year publication). Calculation submitted as a signed statement by a Meridian-registered energy auditor.…

kgCO₂e/m² GFA calculated for: structural frame (required for all tiers), plus envelope materials including cladding, insulation, and glazing (required from Aurum), plus major MEP equipment — chillers, lifts, transformers (required for Platina and…

Primary material suppliers for concrete, steel, brick, and glass must submit carbon disclosure for their supplied products. Accepted disclosure types are a BIS-registered Environmental Product Declaration, an ISO 14067 product carbon footprint…

Building energy simulation submitted at Stage 1. At 12 months, modelled vs metered EUI compared. Whole-building CVRMSE ≤20% per ASHRAE Guideline 14 is a minimum condition, not a scoring criterion. Scoring is ba…

Metered EUI at 12 months compared against design model target. DISCOM bills or BMS tamper-evident export only. Additionally, at 24 months a second EUI is submitted. If the 24-month EUI is higher than the 12-mon…

As-built sub-metering covering HVAC, lighting, plug loads, and common areas as separate circuits, verified by independent electrical inspector at Stage 2. Twelve months of monthly data submitted at Stage 3 in M…

Calculated per GRI 305 using actual utility bills and fuel purchase records for the building asset boundary only. Corporate boundary is explicitly not accepted. The asset boundary is defined as the physical cur…

Year-on-year kgCO₂e/m²/yr reduction verified at 12 and 24 months against Metric 14 baseline. Scoring is based on demonstrated reduction rate — submitting data showing flat or increasing carbon intensity earns zero regardless of submission quality.…

PMV/PPD measurements using calibrated instruments (air temperature, radiant temperature, humidity, air velocity) in minimum 10% of regularly occupied spaces during peak summer and peak winter. Measurements cond…

Building must demonstrate capability to participate in grid demand response — the ability to shed a defined percentage of load within 15 minutes of a DISCOM or grid operator signal. Required evidence: BMS deman…

All HVAC and refrigeration equipment must specify refrigerants with GWP <750 (aligned with Kigali Amendment HFC phase-down schedule under Montreal Protocol, to which India is a signatory). Annual refrigerant le…

WC flush rate (≤4.8 lpf dual flush), faucet flow (≤6 lpm), showerhead flow (≤8 lpm) — all three verified by assessor physical flow measurement using a calibrated flow bag and stopwatch on a random sample of each fixture type.…

Separate metered circuits for sanitation, HVAC make-up, irrigation, and domestic hot water. Verified by licensed plumber and independent assessor at Stage 2. Twelve months of monthly data in Meridian-standard format at Stage 3.…

Baseline calculated from NBC 2016 Chapter 9 fixture schedule at design occupancy. Actual metered consumption from master water meter at 12 months. Reduction percentage = (baseline − actual) / baseline × 100. Me…

Storage tank sized for 24-hr design storm per GRIHA Criterion 2. First-flush diverter installed. Post-monsoon water quality test — turbidity ≤5 NTU, total coliform absent, TDS ≤500 mg/L — from NABL-accredited laboratory at 6 and 12 months…

Percolation pit or recharge well design verified by a CGWB-empanelled hydrogeologist. Recharge capacity calculation compared to annual runoff volume from the site. Pre-construction groundwater level baseline es…

STP/ETP design capacity verified at Stage 1. Treated effluent quality tested against CPCB norms for intended reuse (IS 4764 for toilet flushing, IS 11624 for irrigation). Metered reuse volume as % of total site…

Hydrological calculation demonstrating zero net increase in peak runoff for 10-year return period storm, using actual pre- and post-development site area, imperviousness, and runoff coefficients per IS 15797. C…

Climate-zone ET₀ reference values drawn exclusively from the Meridian Fixed ET₀ Lookup Table, published annually by Obsidian Advisory Group using IMD agro-meteorological station data for each of the 5 ECBC climate zones.…

Annual water harvested plus treated wastewater reused divided by total annual site water demand. Dual lock: the numerator must meet a minimum absolute volume threshold (calculated as site catchment area × actual IMD district rainfall × 0.7 runoff…

% by weight of total structural and finishing material tonnage that is recycled or recovered content. Eligible materials: fly ash and GGBS in concrete (manufacturer mill certificate required), recycled aggregate (NABL lab test for particle size and…

% of total structural and finishing material tonnage sourced within 500 km of site. Verified by supplier GST registration address (not head office — manufacturing plant address used) and GPS-tagged delivery challans.…

All timber products must be accompanied by a State Forest Department transit permit, a registered farm forestry plantation certificate, or a MoEFCC import licence with species declaration. Species listed in Sch…

Product TDS and IS 15489 g/L compliance for paints, adhesives, sealants, and flooring submitted at Stage 1. Air sampling in minimum 10% of occupied spaces at 7 days post-installation per ISO 16000-6 by NABL-accredited lab.…

MSDS on file for all chemical products. SVHC register maintained throughout construction. No SVHC above REACH threshold concentration in any occupied-space material. Assessor reviews SVHC register at Stage 2 an…

Single outcome metric covering: (a) C&D waste management plan filed per C&D Rules 2016, (b) CPCB-registered processor engaged with signed contract, and (c) ≥75% diversion from landfill evidenced by material-specific weight-ticket manifests and…

NABL-accredited lab test certificates for all primary structural elements — concrete cube tests per IS 516, steel tensile per IS 1786, masonry per IS 3495. Sampling protocol: minimum one structural element per…

Structural design certificate from licensed structural engineer confirming IS 1893 zone compliance. Reviewed at Stage 1 against approved structural drawings. At Stage 2, assessor verifies that construction meth…

Tier-1 supplier mapping (name, GST number, manufacturing plant address, material category, annual supply tonnage) required for all certification tiers. Tier-2 mapping required only for Platina and Adamantum. As…

For all Tier-1 suppliers whose manufacturing plant is located in a district classified as High or Extremely High water stress in the WRI Aqueduct Water Risk Atlas, Meridian publishes and annually updates a district-level at-risk list derived directly…

Solar orientation analysis using SP 41(S&T):1987. Built orientation deviation from optimum recorded as a compliance ratio. Deviation >30 degrees from optimum requires written justification from project architect submitted at Stage 1 — without…

Post-construction green cover area vs pre-construction baseline submitted at Stage 1 from satellite imagery or licensed surveyor site survey. At 24 months, assessor conducts site inspection using a 5-point cano…

Surface albedo-weighted score from material specifications at Stage 1. SRI >29 required for non-roof hardscape; SRI >78 for low-slope roofs — both are minimum conditions not scoring criteria. Score is based on…

Required for all sites within 10 km of a protected area, wetland, or Schedule I habitat per MoEFCC GIS boundary data. For sites outside this zone, a simplified site flora-fauna inventory submitted at Stage 1 is sufficient.…

Photometric calculation report per NBC 2016 Part 8 at Stage 1. At commissioning, boundary illuminance measured at minimum 4 equidistant points around the site perimeter using a calibrated lux meter; measurements conducted at night in actual operating…

Green corridor continuity between site and nearest urban green space assessed using CPCB urban biodiversity framework. Three scored components: (1) contiguous native planting along ≥50% of site boundary length, (2) native species ratio >60% of all…

Real-time PM10 dust monitoring at site boundary during all construction phases, with CPCB limit of 600 μg/m³ as the daily average boundary limit. Boundary noise logs maintained per Noise Pollution Rules 2000 da…

Noise from mechanical plant at site boundary measured at minimum 3 boundary points at commissioning and at 12 months post-occupancy. Both measurement dates required for Aurum and above. Measurements taken durin…

SLC Index score ≥60/100 covering wage compliance per Labour Codes 2019-20, EPFO and ESIC registration and contribution records, CLRA licence, work hours per NBCC norms, women-specific facilities per IS 3696 Part 2, and child labour absence.…

CO₂ ≤1000 ppm and PM2.5 ≤35 μg/m³ measured in minimum 10% of occupied spaces at 6 and 12 months post-occupancy. Calibrated instruments — NDIR sensor for CO₂, optical particle counter for PM2.5. Results from NAB…

Total VOC and formaldehyde measured per ISO 16000-6 in minimum 10% of occupied spaces at 7 days post-installation of all interior finishes. Assessor selects measurement locations. If any space fails, ventilatio…

Climate-based daylight modelling using Radiance or Dialux submitted at Stage 1. Simplified lux calculations, rule-of-thumb ratios, and hand calculations are not accepted as the primary compliance pathway for any STHIR tier.…

Measured air change rate in occupied zones using CO₂ decay method (ASTM E741 tracer gas equivalent) at commissioning and at 6 months. ISHRAE commissioning checklist used as field protocol. Results compared agai…

RPwD Act 2016 compliance verified by assessor site walk at Stage 3. Scored on percentage of required provisions installed and functional: ramps (IS 16272 gradient verified by inclinometer), lifts (accessible dimensions measured), tactile paths…

Individual occupant control over the immediate thermal, lighting, and ventilation environment is the strongest single predictor of occupant satisfaction in peer-reviewed building performance research — stronger than absolute temperature, absolute lux…

Pre-construction consultation documented. Grievance register maintained throughout construction and post-occupancy. At least 80% of logged grievances responded to in writing within 21 days of receipt. Valid res…

Lost-time injury rate (LTIR) and near-miss rate per 100,000 worker-hours submitted monthly at Stage 2. Benchmarked against DGFASLI national construction industry average. Dual verification: ESIC claim records c…

Meridian-standardised POE questionnaire administered at 6 and 12 months post-occupancy. Available in English, Hindi, and the top 4 regional languages by project state as published in the Meridian Language Matrix updated annually.…

Assessor walkthrough checklist at Stage 3 covering: adequate and private sanitation facilities for women with lockable cubicles and disposal bins (NBC 2016 ratio plus Meridian supplement for commercial typologies), well-lit pathways from all building…

Delineation from Metric 51: RPwD Act 2016 minimum provisions verified under Metric 51 — ramps at IS 16272 gradient, accessible lifts, tactile paths, and accessible sanitation — are excluded from the Inclusive Design Index denominator of this metric.…

Biophilic design is the integration of natural elements, patterns, materials, and spatial configurations into the built environment to satisfy the human evolutionary affinity with nature. The research base conn…

Mental health is the largest unaddressed occupant health domain in Indian building certification. GRIHA, IGBC, LEED India, and BREEAM India do not score mental health outcomes. WELL v2's Mind concept covers men…

India has 26.8 million persons with disabilities per the 2011 Census — a figure widely regarded as a significant undercount. India's population above 60 years will reach 340 million by 2050 per United Nations projections.…