DSJ- D&S Flashcards
Tell me about your preparation of the design and specification of a building project from outline proposals to completion of the design and specification process.
Outline I developed the project brief in concept and subsequent scheme designs considering spatial coordination. Considerations for thermal performance and ventilation etc. were then considered in detailed designs.
Conversion of Victorian house, Knutsford - run through your role. What was considered in relation to sound and fire separation? How did you ensure the designs were compliant?
Part B Building regulations - Means of escape - considering travel distances, protected stairway, Compartmentation, alarm system.
BS9991:2015 - The standard applies to the design of new buildings, and to material alterations, extensions and material changes of use to existing buildings.
Currently, prescriptive guidance states that travel distance limitation is set at a maximum of 9 metres. This means that a person could be at any place within the habitable areas of the flat and be no more than 9 metres away from the flat exit door, or the entrance hall if it is protected. Additionally, where flats are not provided with a protected entrance hall, these must bedesigned so that the cooking area is situated away from the main flat exit door and is not in a position to jeopardise the escape route.
The provision of a protected entrance hall in a flat is an important tool in ensuring adequate means of escape. It also allows for travel distance from the door of a habitable room (which would lead directly onto the protected hallway) to the exit door within the protected hallway to be limited to 9 metres. This is based upon the protected entrance hall comprising 30 minute fire resistant construction and 20 minute fire resistant doors. As mentioned above in existing buildings, a slightly increased travel distance of up to 3 metres more than the prescriptive 9 metres may be acceptable with the appropriate fire resistant construction and doors in place. However, any increase over 3 metres must be subject to compensatory measures.
60 minutes fire protection for walls and floors.
Part E - Resistance to sound. Impact performance (55dB or less) and Airborne performance (43dB or less).
Bostock Barn conversion - Run through your specification on this project. What ‘design work by others’ was included?
Sustainability - heat pump. Amending design.
What was considered in terms of sustainability?
A heat pump.
Run through the recommendations from the Ecologist and how this was included within your specification of works.
A portion of the barns was dedicated to the bats as an area to roost. 1200 gage visquene and insulation for reduction of heat loss and sound reduction.
Tell me about your understanding and application of spatial parameters and requirements.
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Tell me about your preparation of sketch designs to demonstrate compliance with a client’s brief, while satisfying statutory requirements.
Methodist Chapel - Height could not exceed height of original - 6.5m. Limited design to dormer bungalow - 6.3.m dormer height. Charity Act Report assessed properties nearby and stated a three bed dwelling would be valuable.
A development appraisal undertaken by valuation team deemed the conversion of the building unfeasible. Limited heights two story windows etc.
I liased with our planning consultancy team to understand the planning restraints.
National Design Guide.
When preparing the design I considered building control limitations.
How do you develop initial proposals to a detailed stage (including sections and details) and obtaining statutory consents?
Consider spatial coordination. Then consider legal requirements.
How have you investigated suitable sustainable features and incorporate them within a design?
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Conversion of stables into a 3-bed bungalow - run through what guidance you used in order to produce the designs. What building regulations were considered?
What features needed to be retained for planning purposes?
How was this done?
To comply as a Class Q conversion under GDPO Materials needed to be substantially retained. Including flat roof and blockwork walls.
Predominately I needed to consider Part L:
Conversion - Min requirements
New dwelling - therefore required to comply with Part L1A. Walls 0.18W/m2K (EIR), Floors 0.13W/m2K (New floor), Windows 1.4W/m2K (Modern double/triple glazed windows), Roof 0.13W/m2K (Cold deck - no increase in height).
Part A - Would the new dead loads put the structure at risk.
Part C - Site preparation, resistance to contaminants and moisture.
What sustainable solutions were available at Bostock? Walk through the advantages and disadvantages
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What is concept design?
The concept design represents the design team’s initial response to the project brief.
Some designers will differentiate between ‘concept design’ and ‘scheme design’. ‘concept’ is the initial design idea, whereas the ‘scheme’ develops the concept, taking on board more functional and practical considerations.
An application for planning permission might be made during the concept design stage. This is likely to be an outline planning application if made at the beginning of the stage or a detailed planning application if made once the concept design is complete.
What is an outline specification?
The first stage in the development of a specification is the preparation of an outline specification. An outline specification is a brief description of the main components to be used in construction. They should be described in sufficient detail to allow the cost consultant to prepare some approximate quantities.
Outline what was included in your specification?
Materials and workmanship required for a development. They do not include cost, quantity or drawn information but need to be read alongside other contract documentation such as quantities, schedules and drawings.
Outline how you advised the client about compartmentation.
30 minutes to walls and ceilings in apartments.
Stairs and service shafts connecting compartments should be protected to restrict the spread of fire between the compartments. These are called protected shafts. Walls or floors surrounding a protected shaft are considered to be compartment walls or compartment floors.
