The Factors Influencing The Built Environment
✅ Paper Type: Free Essay | ✅ Subject: Construction |
✅ Wordcount: 3815 words | ✅ Published: 25th Apr 2017 |
Introduction
The proposal assumes the role of a developer presenting to the client. This will help the client to understand the factors influencing the Built Environment (Moxon Street) site. The site would be developed for a ‘Student Accommodation’. Though details of the site are not given in the report but an overview of all the factors that would affect the site development, the techniques used, the precautions ought to be taken, etc. It is a general description of how a site will be developed keeping in mind the health, safety & welfare and the environmental implications from the development of the site.
Section 3
In a built environment it is necessary for the Designer to reduce the health risks that occur from the construction work and also to provide for the safety and welfare to the workers.
So Health, Safety and Welfare play an important in the design process. It can be further divided into stages.
The Design process which is a benchmark to identify the health risks that arises from the design as well as eliminate the hazardous to a reasonable extent. An onsite register can also be maintained in this regard to show that we have to consider the onsite risks. It would be mandatory for the chemicals contained in the product to be registered under REACH.
For Health Hazard the services of a CDM coordinator will be hired and certain components would be assembled off site which would reduce the health hazard on site.
The project risk review gateways will be linked to RIBA at the plan of works stages. There is a need for systematic risk assessment and solution will be assessed on the basis of risk control hierarchy.
There would be a Red-Amber-Green list which can help the designer to identify and also to negate the hazards and to control risks as far as possible.
The Development will have a negative impact on the environment. The Council stipulates that necessary Environment Impact Assessment and Environmental Performance Statement should be part of the development plans. The design should have provisions for natural sunlight, ventilation of air, energy consumption, etc. This should be able to reduce air and noise pollution. This will help the developer to create goodwill for himself as well. There will be ultra low flush toilet which would reduce the use of water.
There are certain Risks Assessments which are to be carried out for the health and safety of the employees on site.
They would be in respect of-
As per the ‘Control of Substance hazardous to health’ regulation precaution would be taken by a systematic approach. The services of an Agency would be hired for workplace monitoring for harmful dust, vapours, fumes and gases. This would be done as per the Workplace Exposure Limits given by E40.
European Union Noise at work regulation would also be considered as per the guidelines-
The 1st and 2nd Action Levels are 80dB(A) and 85dB(A) respectively. 1st and 2nd Peak Action Levels of 135dB(C) and 137dB(C) Peak respectively. A Maximum Exposure Level Limit of 87dB(A) and 140dB(C) Peak at the ear will be introduced which includes any hearing protection.
There would be due consideration given to Fire Risk assessment of Catering Extract Systems with regards to the guidelines-
BSRIA – Fire Risk Assessment – Catering Extract Ventilation
Regulatory Reform Fire Safety Order (RRFSO) 2005
HVCA DW172 Specification for Kitchen Ventilation Systems.
Indoor Air Quality Sick Building Syndrome would be identified as this will affect the health of the occupants of the building. This complains could arise from a particular room or floor but could have a lasting impact on all the occupants.
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Odour Threshold analysis would also be conducted. This is relating to the strange smell i.e., presence of volatile organic compounds in the building that could affect the health to the occupants. The majority of these volatile organic compounds are present in very low concentrations i.e. 0.1-1ppb (parts per billion).
Legionella risk Assessments and Asbestos Identification Surveys would be conducted as well. This would be in accordance with the Approved Code of Practice and Guidance L8, Legionnaires ‘ disease
Approach
There would be a Multi discipline approach taken in the risk management in the design process. This will be fruitful because of the vast experience of the Architect, Consultant, Engineer; etc would be integrated right from the design process.
Design Implication
This all will help us to have a safe and a sound design which would eliminate the hazards to the health and safety of the workers as well as of the occupants. This will also help us to reduce the environmental impact of the built environment.
Primary Services Utilities
It is necessary to accommodate these services in the early stages of the design process.
There should be early checking of availability of these services
Early decision on intended location of such services on the site
This will ensure that there is a proper plan in place and will also help us to avoid complications in the future.
Provisions should be made for-
Telecommunications
Gas
Water
Electricity
Sewage services
If there are issues with the availability of any of these services than a decision can be taken at the early stages of the design process.
The Location of these services would be depended as per the acceptable framework provided by RIBA Plan of Work 2007. This will assist the design team to plan, coordinate and also to have a definite approach to the various services.
Entry to the building would be given from all the four sides with the main entrance from the front of the building.
There can also be distribution and scaling down of different services done by the Designers to meet the needs of our development.
The provisions for accessibility and the maintenance of these services would be done at the early stages of the design process. We would hire competent staff which would look after the maintenance of these services with an access given to them on each floor for easy maintenance and repair.
The environmental implications of these services would be-
Create a sustainable environment for the communities
Protect public health by giving safe drinking water, effective sanitation services, etc
Safely recycling waste
Comply fully with all the environmental legislation
These above precautions and approaches will help us to achieve effective management of services with regular maintenance and also providing with a safe environment for the community.
The Water extraction will be done by the he liquid ring vacuum pump contains a twin start helical rotor mounted eccentrically in a cylindrical pump casing and is designed to pump liquids or combinations of liquid, air and fine solids through long suction lines, generating suction lifts to up to 8.5m.
For the waste Disposal there will be a Site Waste Management Plan (SWMP) in line with the DTI Code of Practice and associated good practice guidance. On completion the new building should be subject to Post Occupancy evaluation.
Global Warning
The building designs will be based on the UKCIP ‘medium high emission scenario’ rather than that which is based on historical data. UKCIP predicted that the average temperature in UK will rise by 3.5 degree by 2080, therefore a mixed mode ventilation stems incorporating the passive and mechanical ventilation coupled with high thermal mass and complete solar shading are likely to cope with the effects of the climate change. Mayor of London commissioned a report stating that London is the most susceptible to flooding than any other urban area in the UK. The site is not in the Zone 3 established by the Westminster Council that specifies areas the areas affected during floods.
In order to minimise the energy demand of the building we must increase the efficiency in the building envelope, using high efficiency windows, insulation in walls, ceilings and floors will be used. Passive solar building design could also be used. This will minimise energy demand.
In order to control emission to water point of water treatment would be used. This improves the quality of water and also reduces the amount of water in circulation. Non-sewage would be used on site which would minimize demand on the local authority.
There would be a good thermal insulation system in place this would minimise the emission to air. The ex filtration of warm air would result for 30% of the heat loss through a buildings envelope. A air leakage test would be carried out as well.
Renewable Energy Issues
Technical- The site will have a-
Solar energy technology
Heat pumps
Energy from waste
Co-generation
This will help to reduce the impact on the environment.
Economic- Initially the cost of the machines would be higher than the conventional equipments but over a period of time there would be a lot of savings due to a decrease in the bills.
Social- This will have a positive impact on the occupants and the community. The carbon and the fuel emission would be quiet low. This would sub dued the hazards caused to the health and safety of the people.
Range of Sustainable construction technique includes-
Wind
Solar
Wave
Biogas
Landfill gas
Hydro
Waste to Energy
84 KW wind generator
Double exterior walls with foam insulation
Radiant slab heat for excess energy storage
Section 4
The Health and Safety at Work Act 1974 describes the risks associated with the construction industry and narrates the specific provision which ought to be taken to negate the danger.
The CDM regulation 2007 encourages co ordination and co-operation among the various parties of the project. It works towards making health and safety an integral part of designing and construction. It recognises the hazards in the planning and construction stage of the project and helps to take corrective steps.
The construction health, safety and welfare regulation 1996 are a set of rules to protect the health and safety of the people engaged on the site and the people who may be affected by the work. It is a leaflet which describes the regulation and precautions to be taken by the people on the site.
The main focus of the Management of the Health and safety at works regulation 1999 is to reduce the damage on the site and to create a action plan for the emergencies. There is a need to comply with the specific regulation of the industry.
Works at Heights Regulations 2005 is concerned with the injury that could occur to a employee as a result of a fall. It covers both the internal and the external areas of the building. There is present no height limit. It places duties on the persons who control the work on the site to take necessary care and precaution.
Method Statement
Site Foundation
The site has a mixed structure type up to 30 metres. So mechanical handling is essential. There should be no public access until the construction work is complete. Adequate security is to be provided to see there is no theft or damage to the site. The site will be developed in two phases.
Loading/Unloading of materials
As the project is conducted in two phases here is sufficient space at the corner of the site for the loading and unloading of materials. This would also give rise to some risks but it would be handled by the experienced staff that operates the machines.
Machines
Non-maintenance of machine will pose a great threat to the workers engaged in site development. So a good maintenance schedule is needed to reduce the need of replacement. All machines should have the current safety inspection certificate and the person operating it should also be certified.
Electrical Equipment
There is a need to keep a check on the conditions of the equipments.
Weather Condition
When there are unsafe a situation arising from the weather conditions the authority is given to the site foreman to take the precaution which is deemed necessary.
Individual Safety Clothing
Individual safety clothing will be provided on site and it is necessary to wear them at all times.
Safety Systems of Work
It is divided into three parts
It analyses the task at hand
Hazards caused to health, safety and welfare
Precautions to be taken to eliminate the hazards
It is an extension of the Risk assessments and the method statement
All this should take place from the planning stage, the design and also on the construction stage.
(Example included in the appendix)
Site Induction and Training
It is the legal responsibility of the employer to provide induction and training relating to the hazards and risk associated to the health and safety of the employees and the contractors.
It includes-
The scope of work
Amenities on the site such as toilet, water, etc
Safety rules in place
Safety procedures for high risk construction activity
PPE required to be worn
First aid arrangements on the site
Good Site management
It is necessary to hire Project Manager for a good site management. They coordinate all design and construction process. They assist the site from the development stage to the actual completion of the site. As the size of the project is reasonable there is a need to hire a Project Manager.
Health and Safety Signage
site safety signconstruction multi sign 1
Personal Protective Equipment
Safety footwear
Hard hats
High visibility waist coats
Goggles
Life jackets
Safety harness
Insulated clothing for adverse climatic condition
Mitts
Gaiters
Checklists is required for the safety of the employees on site
It is necessary for-;
Scaffolding
Powered Access equipments
Roof Work
Hoists
Cranes
Fire
Hazardous substance
Noise, etc.
Roles and Responsibility of the various parties under CDM 2007
Clients
Competence of the contractors
Suitable arrangements for the welfare facilities
Provide pre construction information to the designers and contractors
Planning Supervisor
Assist the client
Notify HSE
Co ordinate health and safety in regards to design
Ensure good communication on the site
Prepare and update health and safety file
Designers
Reduce risk during design
To check whether the CDM co coordinator is been appointed
Make client aware of his duty
Contractor
Prepare and develop a written plan
Site rules
Ensure suitable welfare facilities are provided
Ensure proper induction and training is provided to the workers
Sub-contractor
Manage and monitor own work and also of his workers
Train own employees
Provide them information
Comply with the requirements of the part 4 of the regulations
Users
Report risks
Check competence
Co-operate with each other
Health and safety Officer
Check that health and safety arrangements are made
Report any risks
Impose fine if there are inadequate arrangements
Supply Chain
The materials are available in the free market however there are some materials which would be procured locally and some internationally through Wholesale Agency for Environmental friendly materials.
International Procurement
Reflective coatings and non structures
Phase change material
High efficiency insulation system
Solar heaters
Local Procurement
Bricks
Cement
Concrete
Pre cast structures
Steel
Electrical Fittings
Elevators
Furniture
Wood for Flooring, etc.
The access of the truck and the delivery of the material would be from the front entrance of the site with a possible provision at the back end of the site for the exit.
A temporary warehouse would be constructed at the corner of the site depending on the construction phase. The handling of the material would be done by the employees who are trained beforehand.
The eight rules of handling are included in the appendix
Sustainability of resources
Recycling facilities would be provided for paper and glass and with textile and plastics. Waste minimisation techniques will also be used to reduce waste and it will bifurcate into clean rubble, timber, general chemical waste, etc.
Recycled and Eco friendly materials list is provided in the appendix
Embodied energy issues
We will try to include more renewable materials in the project which has lower embodied energy than non renewable materials.
http://www.canadianarchitect.com/asf/perspectives_sustainibility/measures_of_sustainablity/images/images_optimized/eecontent.jpg
Concrete produces 1 tonne of carbon dioxide for every tonne manufactured.
Waste treatment and management techniques are important for bio degradability of materials at the end of their useful life.
The techniques used are-
Combustion or gasification
Anaerobic digestion
Mechanical treatment
Biological treatment
Modern Method of Construction
It includes ready- made walls, floor and roof which are transported and then assembled on the site. They make construction faster. It also includes modular Kitchen, Bathroom, Furniture, etc which are factory fitted and help in reduction of project duration and also on site environmental hazards. The MMC houses are also energy efficient. Because only assembling is done on the site there are fewer accidents and produces less noise and dust. It also has a less impact on the local residents.
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(The mentioned sites were accessed on 21st and 22nd of December 2009)
Building a Better Quality of Life: a strategy for sustainable construction. DETR (2000)
Sustainable Development Action Plan for Education and Skills. Department for Education and Skills (2003).
Leadership in Energy and Environmental Design (LEED). US Green Building Council (2001).
Environmental Performance Indicators for Sustainable Construction – The Movement for Innovation (M4I)
Sustainable Construction. Higher Education Partnership for Sustainability (HEPS). (2002)
Building Research Establishment Environmental Assessment Method (BREEAM) – Building Research Establishment (2002).
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