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聲音是環(huán)境中一個(gè)重要要素。EHSCity在環(huán)境聲學(xué)服務(wù)的各方面提供了深入的專業(yè)知識(shí)，從基準(zhǔn)噪音級(jí)別監(jiān)控和建立噪音模型，到監(jiān)測(cè)環(huán)境影響評(píng)估的計(jì)劃。
每個(gè)建筑都是獨(dú)一無二的，我們提供聲學(xué)服務(wù)，包括非常特殊的空間，如學(xué)校、實(shí)驗(yàn)室、劇院、歷史建筑及復(fù)雜的醫(yī)院建筑。這些建筑需要謹(jǐn)慎的戰(zhàn)略設(shè)計(jì)，以迎合不同的聲學(xué)空間和功能。
隨著市場(chǎng)上不斷增加對(duì)木材的應(yīng)用，我們也相應(yīng)地進(jìn)行變革和創(chuàng)新。 例如開放式辦公室，或在商業(yè)建筑中采用靈活的空間，便需要考慮到員工對(duì)隔音的滿意度。在醫(yī)療機(jī)構(gòu)中，病房之間的私密性也相當(dāng)重要。我們經(jīng)常使用聲音掩蔽系統(tǒng)來提高環(huán)境噪音水平，不但保障隱私，也避免影響患者的睡眠質(zhì)素。
我們?yōu)槭澜绺鞯氐?/span>高層建筑提供聲學(xué)設(shè)計(jì)，無論建筑結(jié)構(gòu)是混凝土還是鋼材，我們都可為建筑物提供不同的解決方案。我們的專家建議針對(duì)不同的建筑功能采用混合方案（如零售、休閑、辦公室和住宅公寓）之間隔音，以及如何控制機(jī)電房的噪音和振動(dòng)，避免影響相鄰的噪音敏感空間。
許多建筑物位于鐵路旁邊或上方，包含潛在重大的振動(dòng)源。EHSCity的專家進(jìn)行有關(guān)研究，評(píng)估振動(dòng)對(duì)建筑物的影響，包括觸覺振動(dòng)和反射噪音。
地下鐵路振動(dòng)往往表現(xiàn)在建筑物內(nèi)部，而不是作為觸覺振動(dòng)（你可以感受到的振動(dòng)）。而低頻率的反射噪聲，如列車通過時(shí)低沉的隆隆聲。
我們?cè)敿?xì)的振動(dòng)研究解決了這些問題，而我們的經(jīng)驗(yàn)確保為客戶提供正確的解決方案。例如在高振動(dòng)影響的建筑物中，不能通過其他方式減輕嘈音的情況下，使用室內(nèi)裝飾有助減少反射噪聲。在某些情況下，我們建議建筑師和開發(fā)商安裝復(fù)雜的振動(dòng)隔離系統(tǒng)。
施工噪音管理不僅涉及施工現(xiàn)場(chǎng)周邊地區(qū)的戶外噪音，而且還涉及到對(duì)當(dāng)?shù)亟ㄖ锏挠绊?。我們制定噪音和振?dòng)控制計(jì)劃，使承包商和項(xiàng)目經(jīng)理能夠提前知道可能出現(xiàn)的問題，并實(shí)施相應(yīng)的緩解措施。 我們還進(jìn)行噪音和振動(dòng)監(jiān)測(cè)，以監(jiān)督大型建筑項(xiàng)目的承包商合規(guī)情況。
驗(yàn)收測(cè)試涉及對(duì)環(huán)境噪音水平、混響時(shí)間、機(jī)載和撞擊隔音、語音傳輸指數(shù)和工廠噪聲排放進(jìn)行分析。我們還評(píng)估已經(jīng)落成的建筑物，并向業(yè)主提供如何改善聲學(xué)的專業(yè)意見。
EHSCity在環(huán)境聲學(xué)服務(wù)的各方面提供了深入的專業(yè)知識(shí)，從基準(zhǔn)噪音級(jí)別監(jiān)控和建立噪音模型，到監(jiān)測(cè)環(huán)境影響評(píng)估的計(jì)劃。EHSCity擁有先進(jìn)的設(shè)備，加上戰(zhàn)略性建模和風(fēng)險(xiǎn)評(píng)估技術(shù)，讓EHSCity得以精確地對(duì)問題進(jìn)行評(píng)估，為復(fù)雜而潛在費(fèi)用高昂的環(huán)境問題提供可行的解決方案。
我們的核心環(huán)境聲學(xué)管理服務(wù)包括：
· 聲學(xué)影響評(píng)估
· 基準(zhǔn)噪音級(jí)別評(píng)估
· 最佳實(shí)用可用技術(shù)評(píng)估
· 噪音來源清查
· 噪音來源監(jiān)測(cè)——點(diǎn)、線、面
· 預(yù)測(cè)性聲音建模
· 有害噪音級(jí)別的定量健康風(fēng)險(xiǎn)評(píng)估車輛噪音監(jiān)控
我們安裝并監(jiān)控巖土工程地面及建筑監(jiān)控系統(tǒng)，監(jiān)控強(qiáng)化挖掘、隧道、水壩、排水工程和坡面穩(wěn)定性。我們的客戶有大型總承包商、政府、運(yùn)輸交通組織，還有大型能源公司。
· 振動(dòng)與地塊運(yùn)動(dòng)監(jiān)控
· 遠(yuǎn)程及實(shí)時(shí)監(jiān)控
· 強(qiáng)化監(jiān)控
· 建筑/結(jié)構(gòu)的變形監(jiān)控（運(yùn)動(dòng)、傾斜、損傷、負(fù)荷、壓力）
· 水底監(jiān)察海事基礎(chǔ)設(shè)施
我們的經(jīng)驗(yàn)包括噪音接觸預(yù)測(cè)、噪音級(jí)別調(diào)查、規(guī)格監(jiān)管、噪音來源鑒別和減少噪音的提案。
· 噪音級(jí)別調(diào)查（合規(guī)性研究）
· 施工監(jiān)察
· 監(jiān)管及社區(qū)噪音影響研究
· 來源鑒別及有效減少噪音的建議
· 運(yùn)用計(jì)算機(jī)模擬來噪音接觸預(yù)測(cè)
· 實(shí)行減少噪音的措施，包括總承包工程
我們的團(tuán)隊(duì)也在項(xiàng)目管理方面提供聲學(xué)工程服務(wù)，如實(shí)施糾正措施減少工業(yè)區(qū)的噪音。
· 工作場(chǎng)所的噪音研究，包括聲音測(cè)量和員工劑量測(cè)量
· 對(duì)手/臂振動(dòng)或全身振動(dòng)的接觸評(píng)估
· 聲學(xué)成像
· 制定有效控制噪音的計(jì)劃及降噪糾正措施
· 實(shí)施噪音/振動(dòng)控制的總承包計(jì)劃
· 對(duì)設(shè)備購買的噪音級(jí)別規(guī)范
· 新設(shè)備的聲學(xué)設(shè)計(jì)（減輕噪音）
· 員工噪音接觸監(jiān)察計(jì)劃
與我們的海事工程與自然環(huán)境和生態(tài)學(xué)團(tuán)隊(duì)合作，我們提供專業(yè)的海洋聲學(xué)工程服務(wù)包括：
· 基準(zhǔn)水底噪音測(cè)量及噪音評(píng)級(jí)曲線分析
· 實(shí)時(shí)監(jiān)控及海洋哺乳動(dòng)物的空間定位
· 測(cè)定對(duì)不同機(jī)器發(fā)出的水下聲音級(jí)別，包括電錘、風(fēng)鉆、振動(dòng)打樁機(jī)、液壓挖掘機(jī)、輪船、渡船、挖泥船等等。
· 實(shí)時(shí)振動(dòng)監(jiān)控（施工地）
· 制定靠近鐵路或已關(guān)場(chǎng)地的施工的詳細(xì)舒解措施
· 機(jī)械設(shè)備的隔離（隔離器隔離、慣性基座設(shè)計(jì)）
· 爆破監(jiān)控及優(yōu)化（振動(dòng)、飛石及超負(fù)荷）
Sound - whether we want to maximize it or reduce it - is an important element of our environment. EHSCITY offers in-depth expertise in all aspects of environmental acoustic services, from baseline noise level monitoring and the development of noise models, to monitoring programmes in support of environmental impact assessments.
Our experts provide architectural acoustics services, including sound insulation, room acoustics, building vibration and mechanical services noise control. The design guidance we offer will ensure that the interior finiSHEs, partition designs, doors and windows, and building systems and services all function together to create an optimized sonic environment appropriate to the intended use of each architectural space. Our specialists also have long experience in building façade acoustics to minimize the break-in of external noise such as traffic.
Every building is different and we provide the acoustics services for all of them, including very special spaces such as schools, laboratories, theatres or historic structures as well as complex hospital buildings that require careful, strategic design to address the acoustics in a multitude of different spaces and functions.
Trends evolve, such as the increasing use of timber, and we embrace changes and innovate accordingly. For example, the move towards open plan offices and space use flexibility in commercial buildings, have made acoustics more important in employee satisfaction. In healthcare facilities, while the link between sleep quality and recovery is evident, confidentiality in wards and patient rooms also needs to be taken into account. We often use sound masking systems to artificially raise ambient noise level within a space (white noise). It provides the benefit of speech privacy while reducing sleep disturbance.
We have provided acoustical design for numerous tall buildings around the world and are experienced in developing different solutions for a building when its structure changes from concrete to steel. Our specialists advise on what sound insulation is required between a mixed-use scheme’s different functions, such as retail, leisure, offices and residential apartments, and how to control noise and vibration from entire floors of mechanical and electrical plant to highly noise-sensitive spaces directly adjacent.
Many buildings are located beside or above sources of potentially significant vibration, such as railways, leading to concerns about the transmission of vibration and structure-borne noise into acoustically-sensitive spaces. We conduct specialist studies to assess the impacts of vibrations on a building, including tactile vibration and re-radiated noise.
Vibration from underground railways often manifests itself within buildings not as tactile vibration (vibration you can feel) but as low frequency re-radiated noise, perceived as a low rumble as a train passes along the line.
Our detailed vibration studies address these concerns, while our experience ensures we recommend the right solutions for our clients. Techniques such as using room finishes and treatments to reduce re-radiated noise, enable us to limit the need for whole-building insulation to only situations where vibration impacts are high and cannot be mitigated by other means. In these cases, we advise architects and developers on when and how to install the complex vibration isolation systems.
Construction noise management involves not only the outdoor aspects of noise in the area surrounding a construction site, but also its impact on and within local buildings. We develop noise and vibration control plans to enable contractors and project managers to know ahead of time where problems are likely to occur and what kind of mitigation would be appropriate to proactively implement. We also perform noise and vibration monitoring and oversee contractor compliance on larger construction projects.
Commissioning testing is the analysis of ambient noise levels, reverberation time, airborne and impact sound insulation, speech transmission index and plant noise emissions. Our acoustics testers are registered on the Association of Noise Consultants scheme in accordance with building regulations and BREEAM.
We also evaluate already constructed buildings and provide insights to the owner on how to improve the acoustics.
We offer in-depth expertise in all aspects of environmental acoustic services, from baseline noise level monitoring and the development of noise models, to monitoring programmes in support of environmental impact assessments. State-of-the-art equipment, coupled with strategic modelling and risk assessment techniques, enable us to evaluate problems accurately and engineer workable solutions to complex and potentially costly environmental issues.
Our core environmental acoustics management services include:
· Acoustic impact assessments
· baseline noise level assessments
· Best practical available technology assessment
· Noise source inventories
· Noise source monitoring – point, line and area
· Predictive acoustic modelling
· Quantitative health risk assessments for hazardous noise levels
· Vehicle noise monitoring
INSTRUMENTATION AND MONITORING
We have installed and monitored geotechnical ground and building monitoring systems associated with shored excavations, tunnels, dams, dewatering projects, and for slope stability. Our clients include large-scale general contractors, governments, transit and transportation organizations as well as major energy companies.
· Vibration and Ground Movement Monitoring
· Remote and Real Time Monitoring
· Shoring Monitoring
· Building/Structure Deformation Monitoring (Movement, Tilt, Strain, Load, Pressure)
· Underwater surveillance for marine infrastructure
Our experience includes noise exposure forecasts, noise level surveys, regulatory compliance, noise source identification and noise reduction proposals.
· Noise level surveys (compliance studies)
· Construction surveillance
· Regulatory and Community noise impact studies
· Source identification and noise reduction recommendations
· Exposure forecasts using computerized simulations
· Noise reduction implementation, including turnkey projects
Our team also contributes to project management with a view to implementing corrective measures to reduce noise in industrial areas.
· Workplace noise studies, including sound measurement and employee dosimetry
· evaluation of exposure to hand/arm vibrations and whole-body vibrations
· Acoustical imaging
· Establishment of noise control programs and Corrective noise reduction measures
· Turnkey projects for implementing noise/vibration controls
· Noise level specifications for equipment purchases
· Acoustic design for new facilities (noise mitigation)
· Employee noise exposure surveillance program
Working with our Maritime and Natural Environment and Ecology teams, we offer specialist marine acoustics services, including:
· baseline underwater noise measurement and noise rating curves analysis
· Real-time monitoring and spatial location of marine mammals
· Determination of underwater sound levels emitted by different types of machinery: power hammer, pneumatic drill, vibratory hammer, hydraulic excavator, ships, ferries, dredger, etc.
· Real-time vibration monitoring (construction site)
· Mitigation measures elaboration for constructions close to railways or shutting yards
· Mechanical equipment isolation (isolator isolation, inertia base design)
· Blasting monitoring and optimization (vibration, flyrock and overpressure)
