making and designing buildings: the impact of regulatory
TRANSCRIPT
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Making and Designing Buildings:The Impact of Regulatory
Frameworks on the Form of our Environment
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Pre-Industrial Era Design Process:
Master Builder
trades
tradestrades
The Architect was considered a Master Builder and had the knowledge of ALL technical aspects of the project.
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As buildings became more complex and large… early 1800s to 1900 …
The work was often divided into design decisions made by an Architect and an Engineer
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Towns were developed near rivers for water and eventually power
Sewage, fecal matter, etc. was directed into the nearby rivers
People drew their drinking water from the same river assuming the waste was diluted
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Industrialized cities were abhorrent places
Coal fired equipment spewed waste into the air
People needed to live nearby their work as there was no public transportation
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The Ideal City of Chaux, FranceClaude Nicholas Ledoux1773-1806
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IDEAL TOWNS:With the advent of industry some owners asked architects to design complete towns for them to keep the workers housed nearby
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Plan of Menier City, France1864
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Plan of Port Sunlight, UK(Lever Brothers)1867
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Plan of Bourneville (Cadbury)1895
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Plan of Saltaire1851
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Plan of Pullman near Chicago(Pullman Rail cars)1885
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Up until the mid 1800s there was virtually nothing in place to determine where and what could be built
No laws to protect the publicNo rules governing structural safetyNo codes
Nothing
Basically, the Wild West
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When do I need an Engineer or Architect?
Only buildings:MORE THAN 3 ½ storeysOver 600 m2
Need to be signed off by a person holding a Peng or Architect’s Certificate of Practice
Meaning most houses and small buildings can be designed by almost anyone.
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Traditional Modern Design Process:
Contractor
TertiaryGeotechnical Engineer
TertiaryAcoustical Engineer
TertiaryLandscape Consultant
TertiaryInteriors Consultant
SecondaryStructural Engineer
SecondaryMechanical Engineer
SecondaryElectrical Engineer
Client
Architect no longer knows “everything” but takes central focus with little input from consultants until much later in the project
Contractor not normally involved til the drawings are complete.
Primary Architect
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What laws govern our buildings?Government of
Ontario
The Planning Act
The Official Plan
Zoning By-Laws
Committee of Adjustment
The Architects Act
Building Code
How the building is situated, comprised
How the building is constructed
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Ontario Building Code:
• This legal document primarily addresses life safety, structural safety issues and energy
• It is a set of MINIMUM standards for building performance
• No variations are permitted• Looks at materials, exiting, energy
efficiency, occupancy, space/room standards, ventilation, insulation
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The Official Plan:
• This document sets out high level ideals of what the city should “be”
• Defines areas of use and relationships• Dedicates certain zones of the city for
parks, ravines, recreation, business or residential use
• Comprised of texts, maps and pictures• “overrules” the Zoning By-law
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The Zoning By-Law
• Takes the general issues as set out by the Official Plan and gives them more specifically
• A zoning bylaw contains provisions that regulate the
– use, – size, – height, – density and – location of buildings on properties within the City.
The basic purpose of a zoning bylaw is to regulate what you can build and how big the building can be on a property. A typical zoning bylaw maps out the zones which show how the property can be used. That is, the property can be used for various land uses that range from residential to commercial to industrial and a whole host of other land uses.
This typical zoning map shows the zoning for property. The zone with symbols R1 Z0.35, indicate that the property is zoned Residential District (R1) at a density ratio of Z0.35 (floor area divided by lot area)
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Zoning By-Law Details:
Zoning bylaws have 3 basic components:
• maps: number of storeys or metres are the most common feature of any zoning bylaw since they indicate where particular standards apply
• words: which form a kind of "language" unique to each bylaw
• numbers: can establish; – the size of a building, often expressed in floor area or density ratio such as the Floor Space Index
– the height of the building in storeys or metres
– the setbacks determine how far back the building must be from the front, side and back of the property line
– the amount of parking spaces or landscaped space to be provided
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Aesthetic issues with height: Look at limits –10.0m 2 storey10.5m 3 storey11.5m 3 storeyWhat does this do to the shape of a building with increased floor to floor heights?
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The unintended consequences of zoning regulations
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Older house with less pretentious floor to floor heights
New house with taller floor to floor heights
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Square watermelon house results when floor to floor heights push to the limit of the legal height allowed by old laws that have not adapted to new desires.
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The impact of FIRE on design
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No. 1: Life Safetyno loss of life
safe evacuation of occupants
No. 2: Protection of Structuremaintaining integrity of building structure
Primary Motivation in Design for Fire
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remove any one of these, and, no fire...heat
fuel = Building! oxygen
Requirements for Combustion
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• occupancy type• occupant load• building size• construction type• exit requirements• fire resistance ratings• fire separation
Main Issues in Fire Design
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Integrated Design Process Structure:
Architect
Engineers
CommunityUser Group
ClientTHE
PROJECT
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Size and Complexity Matters
• Not all projects are developed to the same level of detail, nor use all types of communication methods.
• The scale / size / scope of the project will greatly affect what methods are used, as will the cost and the amount of fees paid to the design team.
• The region / location / history and local practices of the project will greatly affect the way work is carried out.