Acoustics
Room acoustics, sound insulation between spaces, environmental noise, and speech intelligibility.
- ISO 3382-1:2009, Measurement of room acoustic parameters, Performance spaces. Defines how reverberation time, clarity (C80), definition (D50) and strength (G) are measured in auditoriums and concert halls.
- ISO 3382-2:2008, Measurement of room acoustic parameters, Reverberation time in ordinary rooms. The survey, engineering and precision methods we use for classrooms, offices and meeting rooms.
- ISO 3382-3:2022, Measurement of room acoustic parameters, Open plan offices. Rates spatial decay of speech (D2,S), distraction distance (rD) and privacy distance, the right metrics for open-plan, where reverberation time alone says little.
- ISO 717-1:2020 / ISO 717-2:2020, Rating of sound insulation, Airborne / Impact. Turns a frequency curve into the single numbers specifications are written in: Rw, DnT,w and C/Ctr for airborne, Ln,w for impact.
- ISO 16283 (Parts 1–3), Field measurement of sound insulation in buildings. How airborne, impact and façade insulation are verified on the finished building rather than in a laboratory.
- ISO 12354 (Parts 1–4), Estimation of acoustic performance from the performance of elements. The prediction model behind our design-stage numbers, including flanking transmission, the reason a good wall can still underperform.
- ISO 9613-2, Attenuation of sound during propagation outdoors. Used for plant, genset, chiller and traffic noise modelling to the site boundary.
- ASTM E90 / ASTM E413-22, Laboratory airborne sound transmission loss / STC classification. The North American counterpart to ISO 717-1. Most partition and door datasheets on the market quote STC from this pair.
- ASTM C423, Sound absorption by the reverberation room method. Source of the NRC and αw absorption coefficients we enter into every RT60 calculation.
- ASTM E336 / ASTM E1007, Field measurement of airborne / impact sound isolation. Produces NIC, ASTC and AIIC, the as-built ratings used when a handover dispute turns on measured performance.
- ANSI/ASA S12.60, Acoustical performance criteria for schools. Background noise and reverberation limits for learning spaces, widely referenced where no local school standard exists.
- IEC 60268-16:2020, Objective rating of speech intelligibility by Speech Transmission Index. Defines STI and the STIPA field method, the acceptance criterion for voice alarm and any system that must be understood, not just heard.
- IEC 61672, Electroacoustics, Sound level meters. Class 1 conformity is what makes a measurement defensible. Our meters are calibrated against it.
- SNI 8427:2017, Pengukuran tingkat kebisingan lingkungan. The Indonesian method for environmental noise surveys: LAeq sampled 10 minutes per hour across 24 hours, reduced to Ls, Lm and Lsm.
- SNI 03-6386-2000, Spesifikasi tingkat bunyi dan waktu dengung dalam bangunan gedung dan perumahan. Indonesia's recommended background-noise and reverberation-time design criteria by room type.
- KepMenLH No. 48/MENLH/11/1996, Baku Tingkat Kebisingan. The statutory noise limits per land-use zone that an Indonesian project is assessed against at the boundary.
- Permenaker No. 5 Tahun 2018, Keselamatan dan Kesehatan Kerja Lingkungan Kerja. Sets occupational noise exposure limits by duration, the workplace side of a noise assessment, distinct from the environmental one.
Lighting
Illuminance and glare criteria, daylight, colour quality, and lighting energy limits.
- SNI 6197:2020, Konservasi energi pada sistem pencahayaan. The Indonesian lighting power density ceilings (W/m²) a design has to sit under, plus control and zoning requirements.
- SNI 03-6575-2001, Tata cara perancangan sistem pencahayaan buatan pada bangunan gedung. Recommended maintained illuminance and colour appearance by room function, the local counterpart to EN 12464-1.
- SNI 03-2396-2001, Tata cara perancangan sistem pencahayaan alami pada bangunan gedung. Daylight factor method for Indonesian sky conditions, the starting point before any daylight simulation.
- EN 12464-1:2021, Light and lighting, Lighting of work places, Indoor work places. The task-area criteria most international specifications cite: maintained illuminance, uniformity, UGR limit, and Ra by activity.
- EN 12464-2, Lighting of work places, Outdoor work places. Applies to yards, car parks and circulation, including obtrusive-light limits toward neighbours.
- EN 1838, Lighting applications, Emergency lighting. Escape-route, open-area and high-risk-task illuminance and duration, coordinated with the fire strategy.
- CIE 117, Discomfort glare in interior lighting. Defines the Unified Glare Rating (UGR) that EN 12464-1 sets limits against.
- IES LM-79, Electrical and photometric measurements of solid-state lighting products. The only luminaire test report we accept photometric data from; an LM-79 file is what feeds a calculation.
- IES LM-80 / IES TM-21, LED lumen maintenance measurement and projection. Where the L70/L80 life claim and the maintenance factor in a lux calculation actually come from.
- IES TM-30, Method for evaluating light source colour rendition. Fidelity (Rf) and gamut (Rg), a fuller picture than CRI alone for retail, gallery and hospitality work.
- IEC 60598, Luminaires, General requirements and tests. Safety, IP and IK classification we check on every submitted product before approval.
Audiovisual
Sound system coverage and intelligibility, image size and contrast, and handover documentation.
- ANSI/AVIXA A102.01:2022, Audio Coverage Uniformity. Defines how evenly a sound system must cover the listener area, and how that is proven at handover.
- ANSI/AVIXA A103.01:2023, Sound System Spectral Balance. Target response tolerances so "tuned" means a measured curve, not an opinion.
- AVIXA A104.01, Dynamic Range in Audiovisual Systems. Headroom and noise-floor requirements, what keeps a system clean at peak without hiss at rest.
- ANSI/AVIXA V202.01:2026, Display Image Size for 2D Content (DISCAS). Derives the minimum display size from the farthest viewer and the smallest element they must read, the calculation that settles most "how big is the screen" arguments.
- ANSI/AVIXA V201.01:2021, Image System Contrast Ratio (ISCR). Contrast targets by viewing task, measured with ambient light present, which is why a room's lighting design and its AV design cannot be separated.
- ANSI/AVIXA D401.01:2023, Documentation Requirements for Audiovisual Systems. What a complete AV drawing set and as-built package must contain before a system is considered handed over.
- ANSI/AVIXA D402.02:2013 (R2024), Audiovisual Systems Performance Verification. The verification framework we build commissioning checklists from, formerly INFOCOMM 10:2013.
- ANSI/AVIXA F502.02:2020 (R2023), Rack Design for Audiovisual Systems. Thermal, weight, access and cable-management rules that decide whether a rack stays serviceable in year five.
- AVIXA F501.01:2015, Cable Labeling for Audiovisual Systems. A labelling scheme that survives handover, so faults are traced in minutes instead of hours.
- AVIXA S601.01:2021, Energy Management for Audiovisual Systems. Standby and duty-cycle requirements, where AV contributes to, or undermines, a green building target.
- IEC 62368-1, Audio/video, information and communication technology equipment, Safety requirements. The safety basis for equipment approval on AV and ICT submittals.
Information Technology
Structured cabling classes, pathways and room sizing, the IT Consultant scope that AV-over-IP and building systems both sit on.
- ISO/IEC 11801, Generic cabling for customer premises. Category and channel performance classes underpinning any AV-over-IP or structured cabling design.
- ANSI/TIA-568 / ANSI/TIA-569, Telecommunications cabling / Pathways and spaces. Fixes riser, tray and room sizing early, when it is still a drawing and not a demolition.
Building Envelope & Energy
Heat gain through the envelope, thermal comfort, ventilation, and the energy budget a design is held to.
- SNI 6389:2020, Konservasi energi selubung bangunan pada bangunan gedung. Sets OTTV and RTTV as Indonesia's envelope criteria, with a 35 W/m² OTTV ceiling as the usual compliance target.
- SNI 6390, Konservasi energi sistem tata udara pada bangunan gedung. The HVAC counterpart to the envelope standard; envelope decisions are only worth what the plant does with them.
- ASHRAE 90.1, Energy Standard for Buildings Except Low-Rise Residential Buildings. The baseline most international energy models, and LEED energy credits, are compared against.
- ASHRAE 55, Thermal Environmental Conditions for Human Occupancy. Comfort zone, PMV/PPD and local discomfort limits, the human side of a passive design case.
- ASHRAE 62.1, Ventilation and Acceptable Indoor Air Quality. Outdoor air rates per person and per area. Also an acoustic constraint: more air usually means more duct noise.
- Permen PUPR No. 21 Tahun 2021, Penilaian Kinerja Bangunan Gedung Hijau. Indonesia's statutory green building assessment, awarding Pratama, Madya or Utama ratings across the project stages.
Green & Healthy Building Certification
The rating systems we prepare documentation and simulations for.
- GREENSHIP (GBCI), Green Building Council Indonesia rating tools. The local rating system, including GREENSHIP New Building v1.2, Existing Building and Interior Space. Assessed in a Design Recognition stage and a Final Assessment.
- LEED v5 (USGBC), Leadership in Energy and Environmental Design. Released April 2025 and organised around decarbonisation, quality of life, and ecological conservation. Registration for the earlier commercial rating systems closes 1 July 2027.
- WELL v2 (IWBI), WELL Building Standard. Occupant-health certification. Its Sound and Light concepts are where our acoustic and lighting scope carries certification points directly.
ESG & UN SDGs
Where building performance stops being a design target and becomes a disclosed number. These are the frameworks our clients report under, and the UN Sustainable Development Goals those disclosures roll up to.
- IFRS S1 & IFRS S2 (ISSB), Sustainability- and climate-related financial disclosure. The ISSB global baseline. Indonesia is adopting it through OJK as SPK 1 and SPK 2, with a planned effective date of 1 January 2027, the point at which a building's energy and emissions figures start carrying audit weight rather than marketing weight.
- POJK 51/POJK.03/2017, Sustainable finance and sustainability reporting, Indonesia. The rule that makes a sustainability report mandatory for Indonesian issuers, public companies and financial-sector entities. OJK opened public consultation in February 2026 on amendments aligning it with the ISSB-based standards.
- GRI Standards, Global Reporting Initiative sustainability reporting standards. The framework most Indonesian sustainability reports are still written against. Its energy, emissions and occupational health and safety topics are where our energy modelling and indoor environment work actually lands on the page.
- ESRS (CSRD), European Sustainability Reporting Standards. What EU-parent clients report their Indonesian operations under. The simplified delegated act was adopted on 3 July 2026 and applies from financial year 2027, cutting mandatory datapoints by more than 60% against the 2023 standards.
- GHG Protocol, Corporate Standard, Scope 2 Guidance and Scope 3 Standard. How the emissions behind a building's energy use are counted and split across Scope 1, 2 and 3. All three documents are under revision, consulted through 2026 with final texts expected from 2027, so cite the edition you used.
- ISO 14064-1, Greenhouse gas inventories at organisation level. Specifies how an organisation quantifies, reports and has its GHG inventory verified, the auditable counterpart to a GHG Protocol inventory.
- ISO 14001:2026, Environmental management systems. Published 16 April 2026, replacing the 2015 edition and absorbing the 2024 climate-change amendment. Existing certificates must transition before May 2029.
- ISO 50001, Energy management systems. The management-system counterpart to our energy modelling: the plan-do-check-act structure that keeps measured energy performance improving after hand-over, instead of peaking on the day of commissioning.
- UN 2030 Agenda, The 17 Sustainable Development Goals. Adopted by the UN General Assembly in September 2015: 17 goals and 169 targets to 2030. Six of them are where acoustic, lighting, audiovisual and envelope work makes a measurable difference, listed below.
- Perpres 59/2017 jo. 111/2022, Indonesia's implementation of the SDGs. The presidential regulations binding the SDGs into Indonesian national and regional planning, coordinated by Bappenas, which is why an Indonesian client's SDG mapping follows national indicators, not only the global ones.
- SDG 3, Good health and well-being. Speech intelligibility, noise exposure, glare control and circadian-appropriate light are the building-side levers here. This is the goal WELL certification reports against most directly.
- SDG 7, Affordable and clean energy. Target 7.3 calls for doubling the global rate of energy-efficiency improvement by 2030. Lighting power density, OTTV compliance and energy modelling are how a single project contributes a number to it.
- SDG 9, Industry, innovation and infrastructure. Target 9.4 asks for infrastructure retrofitted to be resource-efficient. Structured cabling, data-centre and building-automation design decide whether that is possible later without tearing the building apart.
- SDG 11, Sustainable cities and communities. Target 11.6 covers the adverse environmental impact of cities, and 11.7 inclusive access to public space. Environmental noise assessment and inclusive acoustic and wayfinding design are the scope that touches both.
- SDG 12, Responsible consumption and production. Target 12.6 is the one that asks companies to integrate sustainability information into their reporting cycle, the target every framework above ultimately answers to.
- SDG 13, Climate action. Operational and embodied carbon both sit here. Energy modelling sets the operational figure; equipment and material selection decide much of the embodied one.