Return document for « technical case studies »

surveys

Document to be digitally completed and emailed back to Nicolas LE DUIN

Constructys Bretagne

nicolas.leduin@constructys.fr

1

SUMMARY

Identification of the survey ............................................................................................................................................... 2

The project ........................................................................................................................................................................ 2

Project manager, designer and builders ....................................................................................................................... 2

Phasing of construction ................................................................................................................................................ 2

Location in the environment ......................................................................................................................................... 3

Objectives (project manager) - Architectural design (prime contractor) ..................................................................... 3

Building system choice of materials.............................................................................................................................. 4

Type of foundations ...................................................................................................................................................... 4

Building structure .......................................................................................................................................................... 4

If only one type of structure select the checkbox, if multiple please indicate the proportion ................................... 4

Technical implementation ............................................................................................................................................ 4

Circle the main techniques implemented .................................................................................................................... 4

Building system for walls (multiple choice is possible) ................................................................................................. 5

Materials possibly present on site ................................................................................................................................ 5

Main system configurations .............................................................................................................................................. 6

Types of materials ......................................................................................................................................................... 6

Progress of the site ........................................................................................................................................................... 7

Obstacles encountered and possible levers ..................................................................................................................... 7

Training of stakeholders ................................................................................................................................................... 8

Usage analysis ................................................................................................................................................................... 8

Cost of construction .......................................................................................................................................................... 8

Attached paper to the project to recover ....................................................................................................................... 10

Glossary: .......................................................................................................................................................................... 10

2

IDENTIFICATION OF THE SURVEY

Name, First name:

Organisation:

Contact :

Owners Insurance company

Engineering company

Architects, project managers

Occupants Training centres

Construction company

Other, please specify :

THE PROJECT

NAME OF THE PROJECT :

Country County

Adress

Town

GPS coordinates Longitude :

Latitude :

Features of the site that make it interesting in a few words:

Project manager, designer and builders

Project manager

Prime contractor

Companies involved (Studies + construction)

Phasing of construction

Year of development

Year of construction Year of Renovation

Type of site

Single dwelling Service building Other,please

specify :

Collective housing Public buildings

Check the box

3

Location in the environment

Land area (m²)

Building area (m²)

Net Floor Area as defined

by RT ‘(Thermal

Regulation)*

Net Floor Area*

Surface area* Floor area*

Type of environment

Plain Vegetation Forest Other please

specify:

Mountain Town Countryside

Check the box

Exposure and orientation to the elements

Main orientation of living spaces:

Are you in a supportive environment

(protection, exposure, contributions, etc ...)? If not, please specify

YES NO

Objectives (project manager) - Architectural design (prime contractor)

What were the objectives of the project manager, the contractor, the owner and the developer in this project?

Detail objectives by type of construction and / or for each part of the construction (general and detailed)

Have energy and/or environmental studies been achieved?

Carbon footprint Environmental impact of construction

Travel Plan Thermal study Life cycle analysis Thermodynamic simulation

Air quality analysis Study of the construction system by calculating the dewpoint Radon Other please

specify:

Acoustic study Check the box

Have social processes been achieved?

For public projects, was the use or user taken into account in design

Other, please

specify :

Co-design of shared premises If so, please specify :

Shared spaces to encourage "living together"

Taking into account trips from home to work

Have economic impact studies been conducted for the project?

4

Local supply chains Other, please specify:

Building system choice of materials

Type of foundations

Superficial Deep Semi-deep Other, please specify::

Building structure

Light (framework)

Heavy (stone, concrete,.)

Other, please

specify::

% %

If only one type of structure select the checkbox, if multiple please indicate the proportion

Technical implementation

Circle the main techniques implemented

Wood

Post & Beam

Wood & straw

structure

Solid hardwood bonded panels

Solid hardwood nailed panels

Platform frame (Wood

framework)

Solid wood

Log or Plank

Other, please

specify:

Hemp

Brick filling render, plaster

Monomur Brick Shuttered Other, please

specify:

Geological materials (stone, earth,...)

Stone masonry

Dry stone Rammed

earth Cob

Rendering, coating

Stone cladding

Other, please specify:

Straw

Dry straw

Filling material Load-bearing

structure Other, please

specify:

Wet straw

Beam-column Load-bearing

structure Other, please specify:

Others (recycled, wadding, textile ...)

Recycling structures Insulation Other, please specify:

5

Comments on the materials present on the site

Building system for walls (multiple choice is possible)

Integrated thermal

insulation

Interior thermal

insulation

Other,

please specify:

External thermal

insulation

Distributed thermal

insulation

Composition of the complex of the main building system used for each part of the building

Roof

Partitions

Intermediate

floors

Insulation

Floor Wall facing the

outside (1)

Wall

facing the

outside

(2)

Wall

facing the

outside

(3)

Other, please

specify:

Materials possibly present on site

Earth as a building material

Straw Stone

Timber Hemp Other, please specify :

6

MAIN SYSTEM CONFIGURATIONS

What technique and what material do you want to develop in this project? On which arguments were these choices based? Highlight some technical detail significant by its rarity, the

excellence of achievement, etc…?

Types of materials

To zoom on the particular technique, this table should be filled.

Name of material:

Raw Processed Local Imported

Geographical origin

World Europe National

Origin

Vegetable Animal Mineral

Geological Recycled Other,pls specify :

Tick the appropriate box (1 per row)

Comments on the origin and the processing of materials...

Management of energy and water

Bioclimatic Management

Greenhouse Auvents Other, specify :

Windows Tromb wall

Inertia management

Hourly basis (very easy)

Daily basis (easy) Sequential (heavy)

Energy systems Nature Power (kWh)

Heating

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Hot water Ventilation Renewable energy Mixeed system

Reduction of water consumption

Frothers Other, specify:

Optimization of hot water

networks

Progress of the site

Construction period?

Was the construction time normal In your opinion?

Do you think the planning was successful?

Management of relations between the different trades

Were there a facilitator ?

Scheduling Overseeing and

Coordination function

Other, pls specify :

OBSTACLES ENCOUNTERED AND POSSIBLE LEVERS

From the organisation, relationship viewpoints

Technically

In terms of professional skills

In terms of materials, supplies

In terms of regulations and insurance

Economically

Could you please specify?

If you were to do it again?

Use of rainwater collection systems YES NO

8

TRAINING OF STAKEHOLDERS

How did the different stakeholders on the site acquire the necessary skills to carry out this project?

What training or experience did they benefit from?

Where did this training or these experiences take place?

USAGE ANALYSIS

Performance obtained by the initial objectives

Gap between theoretical performance and performance observed in situ (or upon invoices)

Measures available

COST OF CONSTRUCTION

Construction cost per building lot Design cost (Fees)

Site preparation and connection Ground

Structural work Floors Project Management Suspended ceilings External joinery Thermal and Fluids Engineering

Office

Floor covering Sealing Engineering and design office Painting Locksmith Consultants Plumbing - Heating

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Electricity Consultants Interior woodwork Rendering Facilitator Double partitions Roof Rapporteur Framework

Total cost of construction Total design cost

Total cost

Financial grants obtained to carry out works

Annual consumptions (kWh or m3)

Heating Hot water Electriciy

10

ATTACHED PAPER TO THE PROJECT TO RECOVER

Diagrams,, building plans

Drawings, sketches for points of detail

Technical details

Photographs of the building or persons

External and internal views

Views before, during and after the phase of construction / renovation

Photographs of interviewed architects, contractors

GLOSSARY:

* SHONRT (Net floor area in the sense of the Thermal Regulations of a building or part of a building used as a

house, single housing and multiple housing) :

Total floor area of each level of the building, after deduction of room surfaces without heating equipment

SHONRT (for buildings other than dwellings) is the result of multiplying the usable floor area of the building by a

factor depending on the use of the building

SHONRT = Fact .SURT (usable floor area in the sense of the Thermal Regulations)

The multiplying factor depends on the use of the building :

-Offices, primary schools: 1,1

- Secondary schools, early childhood centres, Homes for young workers, university housing : 1,2

*SHON (surface hors œuvre nette): Net Floor Area: floor area of the construction,

SHON is a measure of floor area for building construction projects. It allowed:

- to check that the density of buildings complies with the building to plot ratio applicable to the property.

- to form the basis for calculating taxes related to building construction (TLE: taxe locale d’équipement, TDENS: taxe

départementale des Espaces Naturels Sensibles, CAUE: Conseil d’architecture, d’Urbanisme et d’Environnement, …)

La SHON se calculait en soustrayant à la surface hors œuvre brute (SHOB) les surfaces suivantes1 :

The net floor area was calculated by subtracting from the gross floor area (GFA) the following surfaces:

Attic and basement space with a ceiling height less than 1.80 m;

Surfaces of flat roofs, balconies and unclosed portions located on the ground floor,

Areas currently used as technical facilities located in the basement and attic;

Areas currently used as a cellar in the basement provided that there is no opening to the outside other than those

provided for ventilation;

Building areas or part of building areas used for parking vehicles (garage); Building areas used for housing crops, animals or farm equipment; Area equal to 5% of the gross floor area used for housing (standard deduction for insulation of the premises), after applying the above deductions for housing;

Specific deduction for residential building retrofit operations within 5 m2 per dwelling unit for work aimed at improving hygiene ;

Deduction of a fixed area of 5 m2 per housing complying with the rules relating to inner accessibility for disabled persons, provided for either in Articles R. 111-18-2, R. 111-18-6 or Articles R. 111-18-8 and R. 111-18-9 of the Code of Construction and Housing.

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There is some case law on the concept of areas awaiting conversion or not particularly for cellars. In this regard, a judgment of 18 May 2004 issued by the Administrative Court of Appeal of Paris ruled. This judgment motivated a ministerial response as well as a response published in the official bulletin of urban planning law in May 2005. These

responses clearly indicate that the criteria for consistency and allocation of premises must not be confused.

The Net Floor Area must be less or equal to the land area multiplied by the building to plot ratio.

*SHAB (living area) :

The living area of a dwelling is the built floor area, after deduction of surfaces occupied by walls, partitions, stairs

and stairwells, ducts, doorways and windows; the living space is the total living areas thus defined multiplied by

ceiling heights.

Account is not taken of the unconverted area of the attic, cellars, basements, sheds, garages, terraces, loggias,

balconies, outdoor dryers, verandas, glazed volumes provided for in Article R. 111-10, common areas and other

outbuildings, or parts of premises lower than 1.80 m high.

*SDP (Surface de plancher): floor area:

The floor area of the building is defined as: "[...] the sum of the surfaces of floors for each level closed and covered, calculated from the bare interior walls minus: Surfaces corresponding to the thickness of the walls surrounding the doorways and windows overlooking the

outside;

Voids and hoppers relating to stairs and elevators ;

Floor surfaces of a ceiling height less than or equal to 1.80 meter;

Floor areas developed for parking motor vehicles or not, including access ramps and manoeuvring areas ;

Floor surfaces of attics with insufficient headroom for living or for professional, craft, industrial or commercial

activities;

Floor surfaces of technical facilities necessary for the functioning of a group of buildings or a building other than a

house within the meaning of Article L. 231-1 of the Code of Construction and Housing , including waste storage

premises;

Floor surfaces of cellars or storerooms, neighbouring dwellings, when these facilities are served only by a common

part;

Covering an area equal to 10% of floor surfaces used for residential purposes possibly resulting from the application

of the preceding paragraphs, when the dwellings are serviced by internal communal space. "

- Article R. 112-2 of the Town Planning Code, as amended in Decree of 29 December 2011.1

We can see from reading this regulatory definition that some deductions only exist in buildings with multiple

dwelling units or buildings which are not being allocated to housing (technical rooms, basements and cellars with a

ceiling height greater than1.80 m, 10% of the areas served only by common parts).

The accuracy of the terms of the decree should make the calculation of the floor area less objectionable than the old

SHON.

Unlike SHON, the notion of floor area is not used for the calculation of planning taxation. Indeed, the development

fee, which also replaces the local equipment fee, as from March 1, 2012, provides its own calculation of surfaces,

also calculated from the bare interior walls, but with fewer deductions than the SDP.