This presentation informs about the various sound absorbing materials and the noise barriers, including different types of acoustical foams, different types of acoustic ceilings, etc.
The document discusses acoustic materials used in buildings. It describes various acoustic materials like sound absorbers, diffusers, barriers, and reflectors. It explains properties of acoustic materials and how they are used in building components like floors, walls, and ceilings to reduce noise. Specific acoustic materials discussed include acoustic foam panels, fabric panels, underlayment, partitions, and mineral wool for absorption and diffusers for scattering sound. The document also covers acoustic treatment of floors, walls, and ceilings in buildings.
The behavior of sound in enclosed spaces is an important matter particularly in homes. It explains how the sound we listen gets colored causing distortion.
This document discusses sound insulation and soundproofing. It defines key terms like sound, decibel, and reverberation. Sound insulation refers to reducing sound transmission through building elements like walls and floors. Different materials have varying abilities to absorb or block sound transmission. Common sound insulating materials include glass/rock wool, foamed plastics, quiet batts, and studio foam. Proper room arrangement, solid walls, planning for single-story structures, balcony placement, and courtyards can help reduce unwanted noise in buildings. Mass and rigidity help materials resist sound, while openings decrease sound blocking ability.
The proposed materials are intended to be light structures, recyclable or degradable and with high noise reduction efficiency, being proper in buildings structures, noise barrier structures and automotive components.
Key words: acoustic, composite, noise control, absorption, Kundt’s tube, noise barriers
Microclimates are local atmospheric conditions that differ from the surrounding areas, sometimes substantially. They can exist on scales as small as a few square meters in a garden or as large as many square kilometers. Because climate involves spatial and temporal variation, distinct microclimates can form and persist within a larger region. Microclimates are common and can be found in most places.
This presentation informs about the various sound absorbing materials and the noise barriers, including different types of acoustical foams, different types of acoustic ceilings, etc.
The document discusses acoustic materials used in buildings. It describes various acoustic materials like sound absorbers, diffusers, barriers, and reflectors. It explains properties of acoustic materials and how they are used in building components like floors, walls, and ceilings to reduce noise. Specific acoustic materials discussed include acoustic foam panels, fabric panels, underlayment, partitions, and mineral wool for absorption and diffusers for scattering sound. The document also covers acoustic treatment of floors, walls, and ceilings in buildings.
The behavior of sound in enclosed spaces is an important matter particularly in homes. It explains how the sound we listen gets colored causing distortion.
This document discusses sound insulation and soundproofing. It defines key terms like sound, decibel, and reverberation. Sound insulation refers to reducing sound transmission through building elements like walls and floors. Different materials have varying abilities to absorb or block sound transmission. Common sound insulating materials include glass/rock wool, foamed plastics, quiet batts, and studio foam. Proper room arrangement, solid walls, planning for single-story structures, balcony placement, and courtyards can help reduce unwanted noise in buildings. Mass and rigidity help materials resist sound, while openings decrease sound blocking ability.
The proposed materials are intended to be light structures, recyclable or degradable and with high noise reduction efficiency, being proper in buildings structures, noise barrier structures and automotive components.
Key words: acoustic, composite, noise control, absorption, Kundt’s tube, noise barriers
Microclimates are local atmospheric conditions that differ from the surrounding areas, sometimes substantially. They can exist on scales as small as a few square meters in a garden or as large as many square kilometers. Because climate involves spatial and temporal variation, distinct microclimates can form and persist within a larger region. Microclimates are common and can be found in most places.
The presentation is based on interior landscaping and it's importance in the 21st century. The presentation is based on the interior construction of Stepping Park House, Ho Chi Minh City, Vietnam.
“a science that deals with the production, control, transmission, reception, and effects of sound.”
it is the science of controlling sound within buildings.
Sound insulation is the process of soundproofing an enclosed space to prevent sound from filtering in or out. Various materials can be used for sound insulation like fiberglass wool, rock wool, glass wool, mass loaded vinyl, cork, green glue and foam panels. These materials work by absorbing, reflecting or damping sound vibrations. Sound insulation is important in environments like recording studios, homes and offices to reduce noise transfer between spaces and for human health and safety.
The document discusses green buildings and provides information on their objectives, features, and benefits. Some key points include:
- Green buildings aim to minimize environmental impact and maximize energy and resource efficiency throughout a building's lifecycle.
- Objectives include reducing energy and water usage, promoting occupant health, and minimizing waste and pollution.
- Features that make buildings green include efficient designs, use of renewable energy, water conservation, green materials, and waste reduction.
- Rating systems evaluate green building performance in areas like site planning, materials used, and energy efficiency.
This document discusses various surface finishing materials used in construction including stone, plaster, ceramic tiles, facing tiles, ACP sheets, wood, and glass. It then provides details on properties of different types of exterior cladding such as timber cladding, stone cladding, weatherboard cladding, vinyl cladding, metal cladding, concrete cladding, and stucco. The document also discusses types of exterior paints, properties of ceramic tiles, brick tiles, ACP, wood, fiber reinforced plastics, strength and aesthetic properties of glass.
This document discusses landscape design elements including furniture, pergolas, pathways, and walls. It lists types of landscape furniture like tables, chairs, and umbrellas that can add interest. Pergolas are described as freestanding structures that provide shade. Pathways should create clear routes and incorporate plants, curves, and varied materials. Retaining walls hold soil, accommodate uneven terrain, and can be made from materials like wood, concrete, or stone. The document is authored by a group including Mujahid Shaikh, Mayur Waghulde, Rushikesh Wagh, and Kunal Bagul.
reuse and recycle of construction materialRakesh Rahar
This document discusses construction waste recycling. It notes that construction generates a significant amount of waste and that recycling can reduce environmental impacts. It identifies several materials commonly recovered from construction sites, such as asphalt, wood, gypsum wallboard, metals, concrete, brick, and roofing. Recycling these materials provides benefits like reducing pollution, conserving landfill space and resources, and creating jobs. However, barriers to recycling include a lack of facilities, technologies, awareness, and proper waste separation at job sites. The document advocates developing markets for recycled products, education and training, and policies to promote greater recycling in the construction industry.
The Role of Environmental Impact in Building Material’s SelectionHafedh Yahya
An important strategy in architectural design is the selection of sustainable building materials. Therefore, the research explore the environmental problems connected to building materials in order to reduce these impacts by using the most appropriate materials within design process, after conducting a thorough and systematic literature review by using Literature Based Discovery (LBD) methodology. The approach referred to various literature sources such as; journal papers, conference papers, dissertations and scientific and technical reports, in order to identify the environmental impacts of building materials. The research describe 14 environmental problems and distributed in three categories of environmental impacts; human health, ecological degradation and energy consumption. These impacts occurred through various stages of materials life cycle; mining, manufacturing, construction, use and demolition. For further researches in this area the finding will be useful to support model for sustainable building material assessment.
The document discusses the design considerations for auditoriums and recording studios. It addresses factors like room shape, size, absorption, diffusion, and reverberation time that impact acoustics. For auditoriums, a sloped floor and splayed walls can improve speech intelligibility. Absorption is placed in seating areas while keeping the stage reflective. Recording studios require low ambient noise and optimal reverberation. Room dimensions impact resonant modes so larger, irregularly-shaped rooms are preferred.
Acoustics is the scientific study of sound, including how it behaves and is perceived. It deals with properties of sound waves like reflection, refraction, absorption, and interference. Acoustics is important for learning environments and other spaces where noise can be distracting or carry too much. Good acoustics involve distributing sound well, creating a sense of intimacy, and having proper reverberation times. Factors like reverberation time, loudness, echoes, and sound reflections off surfaces can impact architectural acoustics. A variety of materials like sound absorbers, reflectors, and diffusers are used to control sound.
This document provides information about cement paints, including how they are made, application instructions, uses, colors available, pricing, benefits, limitations, and dealers. Cement paints are powder paints used for exterior masonry surfaces like walls and bridges. They are a mixture of portland cement, lime, mineral extenders and water repellents. Proper surface preparation and a two-coat application process with curing is recommended. Cement paints provide UV protection, resist weathering, and allow decoration of masonry at an economical price though the color may fade more quickly than acrylic paints.
This document discusses various types of acoustic materials used to control sound, including sound absorbers, diffusers, barriers, and reflectors. It provides details on common materials like acoustic foam panels, fabric wrapped panels, and ceiling tiles. Sound absorbers are porous materials that eliminate sound reflections, while diffusers scatter sound waves. Barrier materials reduce airborne sound transmission. Prices for different acoustic materials range from Rs. 100-2500 per square foot depending on the type, thickness, and material.
This document discusses noise control in buildings. It introduces noise and noise control, then covers topics like sound and noise, room acoustics, floor construction, space planning, and noise control for main building equipment. The goal of noise control is to reduce unwanted sound pollution through strategies like addressing noise at its source, using appropriate floor assemblies, and planning spaces to separate noisy and quiet areas. Proper equipment selection and placement can also help control noise from mechanical systems.
Ecotect is a 3D building analysis software developed by Autodesk to help architects design more energy efficient and sustainable buildings. It allows users to analyze factors like solar exposure, thermal performance, lighting, and shading. The software imports climate data and converts it to model sunrise, solar paths, and shadowing. It also allows thermal, ventilation and wind simulations. Ecotect is advantageous for architects and designers as it empowers better decision making for sustainable design and creates more energy efficient buildings.
Sustainable architecture is architecture that seeks to minimize the negative environmental impact of buildings by efficiency and moderation in the use of materials, energy, and development space.
Sustainable architecture uses a conscious approach to energy and ecological conservation in the design of the built environment.
The idea of sustainability, or ecological design, is to ensure that our actions and decisions today do not inhibit the opportunities of future generations.
Brick floors have a timeless sense of beauty and charm. They have a warm, inviting appeal, but installing brick floors is often a time consuming and expensive.
This document discusses indoor and outdoor noise propagation, psychoacoustics, and noise criteria. It describes how sound propagates spherically outdoors but is affected by room geometry and surfaces indoors. Psychoacoustics is the study of sound perception and the brain's processing of sound. Noise criteria like Noise Criterion (NC) curves are used to set limits on noise levels in different indoor spaces based on intended use. The document provides details on concepts like sound reflections, absorption, localization, masking, and noise evaluation indices.
Sustainable construction focuses on reducing environmental impact through techniques like using low-VOC paints and formaldehyde-free plywood. It also aims to integrate energy and water efficiency into building design and operations. The key principles are to reduce consumption, reuse materials, and recycle where possible. Sustainable construction evaluates projects based on innovation, social inclusion, environmental performance, economic viability, and contextual design impact. Corporate responsibility is also important, with considerations for minimizing impacts on the environment, fair treatment of workers, community engagement, and ethical business practices.
This document discusses strategies for noise control at the source, along the transmission path, and at the receiver. It describes how noise can be controlled at the source through methods like vibration damping, isolation, proper equipment siting and maintenance. Noise can be blocked along the path using barriers, absorbers, insulators and strip curtains. At the receiver, noise control involves enclosing the space using sealed doors/windows and absorptive internal surfaces, as well as using protective equipment like ear plugs.
Noise pollution can negatively impact human health and the environment. It is caused by loud sounds from sources like vehicles, construction sites, and industrial activity. Prolonged exposure to noise above safe levels can lead to hearing loss, cardiovascular issues, and disrupted sleep. Methods to reduce noise pollution include using barriers around noisy machinery, limiting vehicle speeds, planting trees as buffers, and protecting workers' hearing with earplugs. Controlling noise at the source is the most effective approach.
The presentation is based on interior landscaping and it's importance in the 21st century. The presentation is based on the interior construction of Stepping Park House, Ho Chi Minh City, Vietnam.
“a science that deals with the production, control, transmission, reception, and effects of sound.”
it is the science of controlling sound within buildings.
Sound insulation is the process of soundproofing an enclosed space to prevent sound from filtering in or out. Various materials can be used for sound insulation like fiberglass wool, rock wool, glass wool, mass loaded vinyl, cork, green glue and foam panels. These materials work by absorbing, reflecting or damping sound vibrations. Sound insulation is important in environments like recording studios, homes and offices to reduce noise transfer between spaces and for human health and safety.
The document discusses green buildings and provides information on their objectives, features, and benefits. Some key points include:
- Green buildings aim to minimize environmental impact and maximize energy and resource efficiency throughout a building's lifecycle.
- Objectives include reducing energy and water usage, promoting occupant health, and minimizing waste and pollution.
- Features that make buildings green include efficient designs, use of renewable energy, water conservation, green materials, and waste reduction.
- Rating systems evaluate green building performance in areas like site planning, materials used, and energy efficiency.
This document discusses various surface finishing materials used in construction including stone, plaster, ceramic tiles, facing tiles, ACP sheets, wood, and glass. It then provides details on properties of different types of exterior cladding such as timber cladding, stone cladding, weatherboard cladding, vinyl cladding, metal cladding, concrete cladding, and stucco. The document also discusses types of exterior paints, properties of ceramic tiles, brick tiles, ACP, wood, fiber reinforced plastics, strength and aesthetic properties of glass.
This document discusses landscape design elements including furniture, pergolas, pathways, and walls. It lists types of landscape furniture like tables, chairs, and umbrellas that can add interest. Pergolas are described as freestanding structures that provide shade. Pathways should create clear routes and incorporate plants, curves, and varied materials. Retaining walls hold soil, accommodate uneven terrain, and can be made from materials like wood, concrete, or stone. The document is authored by a group including Mujahid Shaikh, Mayur Waghulde, Rushikesh Wagh, and Kunal Bagul.
reuse and recycle of construction materialRakesh Rahar
This document discusses construction waste recycling. It notes that construction generates a significant amount of waste and that recycling can reduce environmental impacts. It identifies several materials commonly recovered from construction sites, such as asphalt, wood, gypsum wallboard, metals, concrete, brick, and roofing. Recycling these materials provides benefits like reducing pollution, conserving landfill space and resources, and creating jobs. However, barriers to recycling include a lack of facilities, technologies, awareness, and proper waste separation at job sites. The document advocates developing markets for recycled products, education and training, and policies to promote greater recycling in the construction industry.
The Role of Environmental Impact in Building Material’s SelectionHafedh Yahya
An important strategy in architectural design is the selection of sustainable building materials. Therefore, the research explore the environmental problems connected to building materials in order to reduce these impacts by using the most appropriate materials within design process, after conducting a thorough and systematic literature review by using Literature Based Discovery (LBD) methodology. The approach referred to various literature sources such as; journal papers, conference papers, dissertations and scientific and technical reports, in order to identify the environmental impacts of building materials. The research describe 14 environmental problems and distributed in three categories of environmental impacts; human health, ecological degradation and energy consumption. These impacts occurred through various stages of materials life cycle; mining, manufacturing, construction, use and demolition. For further researches in this area the finding will be useful to support model for sustainable building material assessment.
The document discusses the design considerations for auditoriums and recording studios. It addresses factors like room shape, size, absorption, diffusion, and reverberation time that impact acoustics. For auditoriums, a sloped floor and splayed walls can improve speech intelligibility. Absorption is placed in seating areas while keeping the stage reflective. Recording studios require low ambient noise and optimal reverberation. Room dimensions impact resonant modes so larger, irregularly-shaped rooms are preferred.
Acoustics is the scientific study of sound, including how it behaves and is perceived. It deals with properties of sound waves like reflection, refraction, absorption, and interference. Acoustics is important for learning environments and other spaces where noise can be distracting or carry too much. Good acoustics involve distributing sound well, creating a sense of intimacy, and having proper reverberation times. Factors like reverberation time, loudness, echoes, and sound reflections off surfaces can impact architectural acoustics. A variety of materials like sound absorbers, reflectors, and diffusers are used to control sound.
This document provides information about cement paints, including how they are made, application instructions, uses, colors available, pricing, benefits, limitations, and dealers. Cement paints are powder paints used for exterior masonry surfaces like walls and bridges. They are a mixture of portland cement, lime, mineral extenders and water repellents. Proper surface preparation and a two-coat application process with curing is recommended. Cement paints provide UV protection, resist weathering, and allow decoration of masonry at an economical price though the color may fade more quickly than acrylic paints.
This document discusses various types of acoustic materials used to control sound, including sound absorbers, diffusers, barriers, and reflectors. It provides details on common materials like acoustic foam panels, fabric wrapped panels, and ceiling tiles. Sound absorbers are porous materials that eliminate sound reflections, while diffusers scatter sound waves. Barrier materials reduce airborne sound transmission. Prices for different acoustic materials range from Rs. 100-2500 per square foot depending on the type, thickness, and material.
This document discusses noise control in buildings. It introduces noise and noise control, then covers topics like sound and noise, room acoustics, floor construction, space planning, and noise control for main building equipment. The goal of noise control is to reduce unwanted sound pollution through strategies like addressing noise at its source, using appropriate floor assemblies, and planning spaces to separate noisy and quiet areas. Proper equipment selection and placement can also help control noise from mechanical systems.
Ecotect is a 3D building analysis software developed by Autodesk to help architects design more energy efficient and sustainable buildings. It allows users to analyze factors like solar exposure, thermal performance, lighting, and shading. The software imports climate data and converts it to model sunrise, solar paths, and shadowing. It also allows thermal, ventilation and wind simulations. Ecotect is advantageous for architects and designers as it empowers better decision making for sustainable design and creates more energy efficient buildings.
Sustainable architecture is architecture that seeks to minimize the negative environmental impact of buildings by efficiency and moderation in the use of materials, energy, and development space.
Sustainable architecture uses a conscious approach to energy and ecological conservation in the design of the built environment.
The idea of sustainability, or ecological design, is to ensure that our actions and decisions today do not inhibit the opportunities of future generations.
Brick floors have a timeless sense of beauty and charm. They have a warm, inviting appeal, but installing brick floors is often a time consuming and expensive.
This document discusses indoor and outdoor noise propagation, psychoacoustics, and noise criteria. It describes how sound propagates spherically outdoors but is affected by room geometry and surfaces indoors. Psychoacoustics is the study of sound perception and the brain's processing of sound. Noise criteria like Noise Criterion (NC) curves are used to set limits on noise levels in different indoor spaces based on intended use. The document provides details on concepts like sound reflections, absorption, localization, masking, and noise evaluation indices.
Sustainable construction focuses on reducing environmental impact through techniques like using low-VOC paints and formaldehyde-free plywood. It also aims to integrate energy and water efficiency into building design and operations. The key principles are to reduce consumption, reuse materials, and recycle where possible. Sustainable construction evaluates projects based on innovation, social inclusion, environmental performance, economic viability, and contextual design impact. Corporate responsibility is also important, with considerations for minimizing impacts on the environment, fair treatment of workers, community engagement, and ethical business practices.
This document discusses strategies for noise control at the source, along the transmission path, and at the receiver. It describes how noise can be controlled at the source through methods like vibration damping, isolation, proper equipment siting and maintenance. Noise can be blocked along the path using barriers, absorbers, insulators and strip curtains. At the receiver, noise control involves enclosing the space using sealed doors/windows and absorptive internal surfaces, as well as using protective equipment like ear plugs.
Noise pollution can negatively impact human health and the environment. It is caused by loud sounds from sources like vehicles, construction sites, and industrial activity. Prolonged exposure to noise above safe levels can lead to hearing loss, cardiovascular issues, and disrupted sleep. Methods to reduce noise pollution include using barriers around noisy machinery, limiting vehicle speeds, planting trees as buffers, and protecting workers' hearing with earplugs. Controlling noise at the source is the most effective approach.
This document discusses noise pollution, defining it as unwanted or disruptive sound that negatively impacts human or animal life. It begins by defining key terms like noise, sound, and decibels. The main sources of noise pollution are then outlined, such as transportation, construction, and consumer products. The health effects of noise pollution on humans and animals are explored, including hearing impairment, decreased work efficiency, lack of concentration, and increased risk of heart attacks. Solutions to noise pollution problems are proposed, such as enforcing limits on vehicle horns and loud speakers and planting trees to absorb sound. Overall, the document provides a comprehensive overview of noise pollution causes, impacts, and potential mitigation strategies.
Acousticsandsoundinsulationsby K R ThankiKrunal Thanki
This document provides information about building acoustics and sound absorption materials. It discusses characteristics of sound including pitch, intensity, wavelength, speed of sound in different mediums, reflection, refraction, interference, reverberation, and more. It then describes different types of sound absorption materials like foam panels, fabric wrapped panels, ceiling tiles, baffles, and gives specifications for each. The goal is to educate on acoustics and available soundproofing options.
The document discusses noise pollution, defining it as unwanted or disruptive sound that negatively impacts human or animal life. It notes that while sound and noise are physically indistinct, noise is sound perceived as unpleasant, unwanted or disruptive. Major sources of noise pollution are listed as road traffic, construction, aircraft, railroads and consumer products. The effects of noise pollution on humans include hearing impairment, decreased work efficiency, lack of concentration, stress, heart issues, and sleep interference. Solutions proposed are better soundproofing, limiting loud machinery near homes, and growing plants that absorb sound. The key message is that excessive noise poses risks and mitigation efforts are needed.
This document discusses noise pollution, including defining noise and sound, sources of noise pollution like traffic, industries, and construction, effects of noise pollution like physical, physiological and psychological impacts, and methods to control noise pollution such as reducing it at the source, acoustic zoning, legislative measures, and sound insulation during construction.
This document discusses noise pollution, including its definition, sources, measurement, impacts, and control methods. It defines noise pollution as unwanted sound that disrupts human or animal activity. The main sources discussed are road traffic, aircraft, railroads, construction sites, and industrial facilities. Noise is measured in decibels, and sounds above 80 dB are considered potentially hazardous. Health impacts from noise pollution include hearing loss, lack of concentration, stress, and sleep disruption. The document recommends various engineering and administrative controls to mitigate noise pollution from sources and protect receivers.
This document discusses sound pollution and noise-induced hearing loss. It notes that safe noise exposure is 85 decibels for 8 hours per day. Common sources of noise pollution are discussed, such as road traffic, airplanes, construction equipment, and consumer products. Measurement units like decibels are explained. The harmful effects of noise pollution include decreased efficiency, fatigue, high blood pressure, and hearing loss. Methods to control noise pollution include reducing noise at the source, using barriers, and wearing protective equipment. Legal controls on noise pollution through laws and acts are also mentioned. The conclusion calls for greater awareness of noise pollution's effects and encouraging prevention of unnecessary loud noises.
The document summarizes an experiment that tested the effectiveness of different common materials for sound insulation. The materials tested included expanded polystyrene foam, stainless steel, wood, and paper. The experiment measured the sound reduction index and transmitted coefficient of each material at different frequencies. The results showed that stainless steel was the most effective at sound insulation, while expanded polystyrene foam and paper were the least effective. Common soundproofing techniques for homes using different materials were also discussed.
Sports Acoustics is an important branch of Sports Engineering. Sound makes sports wonderful. This presentation is prepared by ANEESH K S, Certified Sports Engineer (Trainee) at Sports & Management Research Institute (SMRI)
This document discusses various types of acoustical materials used to control sound, including sound absorbers, diffusers, barriers, and reflectors. It provides details on common sound absorbing materials like acoustical foam panels, fabric-wrapped panels, wall coverings, ceiling tiles, and baffles. These materials use porous materials like foam, fiberglass, and fabrics to absorb sound waves. The document also briefly mentions sound diffusers which scatter sound reflections instead of absorbing them.
Solutions and Remedies for Noise Pollution
Planting bushes and trees in and around sound generating sources is an effective solution for noise pollution.
Urban Planning, Public Education and Awareness
Regular servicing and tuning of automobiles/ machinery can effectively reduce the noise pollution.
Alteration of roadway surface texture.
Buildings can be designed with suitable noise absorbing material for the walls, windows, and ceilings.
Soundproof doors and windows can be installed to block unwanted noise from outside.
Factories and industries should be located far from the residential areas.
Workers should be provided with equipment such as ear plugs and earmuffs for hearing protection.
Control in the Transmission Path, Control at Source, Control over Vibrations
Exposure Reduction
Enclosure of machines can reduce noise levels at its source very effectively.
Leakage where pipes pass through walls as well as acoustic leaks between walls, screens or enclosures, can produce large variations in the attenuation achieved. It is therefore important to seal air gaps carefully
Putting major noise sources at one place & separating it from quieter area.
Using acoustic barriers, sound absorbing linings & sound insulating partitions.
Complete or partial enclosure of noisy equipment.
Providing silencers on the intake as well as exhaust side of flow machines, like blowers, fans etc.
Insertion of damping material between machine bases and foundations and use of anti vibration mountings.
Regulations should be imposed to restrict the usage of play loudspeakers in crowded areas and public places.
International Co-operation
for Free 1000 PPT Please visit
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This document discusses architectural acoustics and provides information on sound classification, characteristics of musical sound, intensity, absorption coefficient, sound absorbing materials, reverberation, and factors affecting building acoustics such as reverberation time, loudness, focusing, echo, echelon effect, and resonance. It also covers noise control and discusses remedies for improving acoustics issues in buildings.
Any unwanted, disturbing or harmful sound that impairs or interferes with hearing, causes stress, hampers concentration and work efficiency or causes accidents called noise pollution.
This document discusses architectural acoustics and provides information on sound classification, characteristics of musical sound, intensity, absorption coefficient, sound absorbing materials, reverberation, and factors affecting building acoustics such as reverberation time, loudness, focusing, echo, echelon effect, resonance, and noise. It explains how sound is classified into infrasound, audible sound, and ultrasound. Musical sound produces a pleasing effect while noise produces a jarring effect. Absorption coefficient measures the ratio of absorbed to incident sound energy. Various sound absorbing materials and methods to control reverberation time, noise, and other acoustic issues in buildings are also described.
This document discusses noise pollution and noise barriers. It defines noise as unwanted sound that can damage hearing and health. Noise barriers help reduce noise pollution by deflecting and blocking sound. Transparent noise barriers use materials like polycarbonate that provide sound insulation while allowing views. They have advantages over conventional barriers like being lighter, more durable, and requiring less maintenance. Technical specifications for polycarbonate sheets and installation methods are also outlined.
The document discusses noise pollution, defining it as unwanted sound that interferes with daily life. It describes the difference between sound and noise, sources of noise like traffic and construction, units used to measure sound (decibels), and health effects of noise pollution like hearing loss, sleep disturbances, and stress. The WHO recommends reducing noise levels below certain thresholds to prevent health impacts, and suggests actions governments and industries can take to control noise pollution like enforcing legislation, using sound barriers, and siting noisy facilities away from residential areas.
Microbial characterisation and identification, and potability of River Kuywa ...Open Access Research Paper
Water contamination is one of the major causes of water borne diseases worldwide. In Kenya, approximately 43% of people lack access to potable water due to human contamination. River Kuywa water is currently experiencing contamination due to human activities. Its water is widely used for domestic, agricultural, industrial and recreational purposes. This study aimed at characterizing bacteria and fungi in river Kuywa water. Water samples were randomly collected from four sites of the river: site A (Matisi), site B (Ngwelo), site C (Nzoia water pump) and site D (Chalicha), during the dry season (January-March 2018) and wet season (April-July 2018) and were transported to Maseno University Microbiology and plant pathology laboratory for analysis. The characterization and identification of bacteria and fungi were carried out using standard microbiological techniques. Nine bacterial genera and three fungi were identified from Kuywa river water. Clostridium spp., Staphylococcus spp., Enterobacter spp., Streptococcus spp., E. coli, Klebsiella spp., Shigella spp., Proteus spp. and Salmonella spp. Fungi were Fusarium oxysporum, Aspergillus flavus complex and Penicillium species. Wet season recorded highest bacterial and fungal counts (6.61-7.66 and 3.83-6.75cfu/ml) respectively. The results indicated that the river Kuywa water is polluted and therefore unsafe for human consumption before treatment. It is therefore recommended that the communities to ensure that they boil water especially for drinking.
Evolving Lifecycles with High Resolution Site Characterization (HRSC) and 3-D...Joshua Orris
The incorporation of a 3DCSM and completion of HRSC provided a tool for enhanced, data-driven, decisions to support a change in remediation closure strategies. Currently, an approved pilot study has been obtained to shut-down the remediation systems (ISCO, P&T) and conduct a hydraulic study under non-pumping conditions. A separate micro-biological bench scale treatability study was competed that yielded positive results for an emerging innovative technology. As a result, a field pilot study has commenced with results expected in nine-twelve months. With the results of the hydraulic study, field pilot studies and an updated risk assessment leading site monitoring optimization cost lifecycle savings upwards of $15MM towards an alternatively evolved best available technology remediation closure strategy.
Presented by The Global Peatlands Assessment: Mapping, Policy, and Action at GLF Peatlands 2024 - The Global Peatlands Assessment: Mapping, Policy, and Action
Kinetic studies on malachite green dye adsorption from aqueous solutions by A...Open Access Research Paper
Water polluted by dyestuffs compounds is a global threat to health and the environment; accordingly, we prepared a green novel sorbent chemical and Physical system from an algae, chitosan and chitosan nanoparticle and impregnated with algae with chitosan nanocomposite for the sorption of Malachite green dye from water. The algae with chitosan nanocomposite by a simple method and used as a recyclable and effective adsorbent for the removal of malachite green dye from aqueous solutions. Algae, chitosan, chitosan nanoparticle and algae with chitosan nanocomposite were characterized using different physicochemical methods. The functional groups and chemical compounds found in algae, chitosan, chitosan algae, chitosan nanoparticle, and chitosan nanoparticle with algae were identified using FTIR, SEM, and TGADTA/DTG techniques. The optimal adsorption conditions, different dosages, pH and Temperature the amount of algae with chitosan nanocomposite were determined. At optimized conditions and the batch equilibrium studies more than 99% of the dye was removed. The adsorption process data matched well kinetics showed that the reaction order for dye varied with pseudo-first order and pseudo-second order. Furthermore, the maximum adsorption capacity of the algae with chitosan nanocomposite toward malachite green dye reached as high as 15.5mg/g, respectively. Finally, multiple times reusing of algae with chitosan nanocomposite and removing dye from a real wastewater has made it a promising and attractive option for further practical applications.
Improving the viability of probiotics by encapsulation methods for developmen...Open Access Research Paper
The popularity of functional foods among scientists and common people has been increasing day by day. Awareness and modernization make the consumer think better regarding food and nutrition. Now a day’s individual knows very well about the relation between food consumption and disease prevalence. Humans have a diversity of microbes in the gut that together form the gut microflora. Probiotics are the health-promoting live microbial cells improve host health through gut and brain connection and fighting against harmful bacteria. Bifidobacterium and Lactobacillus are the two bacterial genera which are considered to be probiotic. These good bacteria are facing challenges of viability. There are so many factors such as sensitivity to heat, pH, acidity, osmotic effect, mechanical shear, chemical components, freezing and storage time as well which affects the viability of probiotics in the dairy food matrix as well as in the gut. Multiple efforts have been done in the past and ongoing in present for these beneficial microbial population stability until their destination in the gut. One of a useful technique known as microencapsulation makes the probiotic effective in the diversified conditions and maintain these microbe’s community to the optimum level for achieving targeted benefits. Dairy products are found to be an ideal vehicle for probiotic incorporation. It has been seen that the encapsulated microbial cells show higher viability than the free cells in different processing and storage conditions as well as against bile salts in the gut. They make the food functional when incorporated, without affecting the product sensory characteristics.
Epcon is One of the World's leading Manufacturing Companies.EpconLP
Epcon is One of the World's leading Manufacturing Companies. With over 4000 installations worldwide, EPCON has been pioneering new techniques since 1977 that have become industry standards now. Founded in 1977, Epcon has grown from a one-man operation to a global leader in developing and manufacturing innovative air pollution control technology and industrial heating equipment.
Climate Change All over the World .pptxsairaanwer024
Climate change refers to significant and lasting changes in the average weather patterns over periods ranging from decades to millions of years. It encompasses both global warming driven by human emissions of greenhouse gases and the resulting large-scale shifts in weather patterns. While climate change is a natural phenomenon, human activities, particularly since the Industrial Revolution, have accelerated its pace and intensity
ENVIRONMENT~ Renewable Energy Sources and their future prospects.tiwarimanvi3129
This presentation is for us to know that how our Environment need Attention for protection of our natural resources which are depleted day by day that's why we need to take time and shift our attention to renewable energy sources instead of non-renewable sources which are better and Eco-friendly for our environment. these renewable energy sources are so helpful for our planet and for every living organism which depends on environment.
1. Social Relevant
Project
Under the guidelines of
Dr. K. KRISHNA
BHASKAR
Noise Barriers For
Sound Pollution
P Santosh Kumar (19021A0328)
S Mohan Sainath (19021A0330)
M Bharathi (20025A0355)
2. Noise Pollution
Noise pollution can be
defined as any disturbing or
unwanted noise that
interferes or harms humans
or wildlife.
4. Noise Levels
Noise levels
Noise Average decibels (dB)
Leaves rustling, soft music, whisper 30
Average home noise 40
Normal conversation, background
music
60
Office noise, inside car at 60 mph 70
Vacuum cleaner, average radio 75
Heavy traffic, window air conditioner,
noisy restaurant, power lawn mower 80–89 (sounds above 85 dB are
harmful)
Subway, shouted conversation 90–95
Boom box, ATV, motorcycle 96–100
School dance 101–105
Chainsaw, leaf blower, snowmobile 106–115
Sports crowd, rock concert, loud
symphony
120–129
Stock car races 130
Gun shot, siren at 100 feet 140
Noise level is measured in decibels
(dB). The louder the noise, the higher
the decibels. Prolonged exposure to
loud noises (75 dBA over eight hours a
day for years) can lead to hearing loss.
The body can also respond to
lower noise levels. sleep can be
disturbed by an outdoor noise of 40
dBA.
6. Effects Of
Noise Pollution
Hearing Loss (NIHL)
High blood pressure
Heart disease
Sleep disturbances
Mental stress.
7. Sound Barrier
The sound barrier wall is
typically used outdoors to
control industrial/mechanical
noise, HVAC noise,
transportation noise and
other disturbing noises
produced by chillers, air
handling equipment, fans,
transformers, compressors
etc.
8. Types of Noise Barriers
Reflective Absorptive
Sound waves will do two things when they encounter an object either they can be absorbed
or they can be reflected
9. Effectiveness Of Absorptive Material
The combination of reflective barriers and commercial
buildings often increase noise to the Receiver via
unintended reflective sound waves.
When absorptive materials are used at the barrier and
on the building, reflected sound is minimized,
significantly reducing noise at the Receiver.
10. Absorption
Coefficient Of
Different Materials
Sound absorption coefficient is
used to evaluate the sound
absorption efficiency of
materials. It is the ratio
of absorbed energy to incident
energy and is represented by α.
The sound absorption
coefficient of materials is
correlated with frequency, and it
varies with different frequencies.
11. Design
Soundproof barriers use
composite layers of vinyl, foam
or fiberglass to block, dampen
and deflect sound energy and
vibration. They are often
flexible and equipped with a
peel-and-stick adhesive that
makes them incredibly easy to
install around pipes, on top of
drywall, and inside
nontraditional spaces like boat
cabins and vehicle trunks.
Absorptive wall Absorptive panel
12. Strength Of Absorptive Materials
A typical sound absorbing noise
barrier wall panel is eight (8")
inches thick, four (4") inches of
sound absorptive mixture and four
(4") inches of structural concrete.
Noise barrier panels are designed
to be used with either concrete or
steel support post.
Noise barriers absorbs up to 85
percent of the noise.
13. Benefits Of
Absorptive
Materials
Noise barriers are easily
customizable and easy to install.
It is effective way in this time to
avoid the disturbances and
felling relax in the free time and
also to improve the mental
health.