01 General D&S Questions Flashcards
What is a schedule of works?
- A list of the work to be done, identifying what and where the work is to be carried out
- It may/may not also include quantities, however on larger projects a separate BQ is normally used
What is a specification?
- Describes the materials and workmanship required for the work (e.g. standard specification for decoration)
- Do not include cost, quantity or drawn information and therefore needs to be read alongside other contract documentation (e.g. drawings, schedules, quantities)
What is a bill of quantities?
Provides project specific measured quantities of the items of work identified by the schedule of work
Can you combine schedules of work, specifications and bills of quantities?
- A ‘Specified Schedule of Work’ combines both the list of work and the description / workmanship elements
- A ‘Specified Bill of Quantities’ combines all three elements - list of work items, descriptions and quantities
What different types of specification are there?
Performance (aka open specifications):
- Further design work to be carried out by contractor
- More scope for contractor to be innovative (e.g. cost, buildability), potentially resulting in better value for money
- Typically used on straight-forward projects
Prescriptive (aka closed specifications)
- Design is already complete and no choices are left to the contractor
- Greater certainty for client
- Typically used on more complex projects or when client requirements are particularly specific
What standard formats could you use to produce a specification document?
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What is the difference between outline and detailed design?
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How would you structure a specification document?
- General conditions (e.g. any substituted materials to be approved by CA)
- Site prelims - relating to one-off fixed costs (e.g. bringing to site and erecting site accommodation) or time-related charges (e.g. heating, lighting and water for the accommodation)
- External items separated by elemental sub-headings (e.g. foundations, walls, roof etc.)
- Internal items separated on a room by room basis
- Ensure consistent trade order sequencing within location headings (e.g. builder’s works, flooring, decoration etc.)
- Ensure relevant and accurate cross-referencing to any accompanying drawings/specifications
- Group any provisional sums together towards the end of the document
What guidance is available to designers when writing specification documents?
RICS Guidance Note - Design and Specification
- Details best practice guidance relevant to design and specification processes, including:
- Role of the designer
- Risks associated with designing
- Structure and contents of design documents
- Legislative considerations
What is the CAWS and how can it be used in design and specification?
- CAWS is the categorisation of work to create a consistent arrangement of work sections
- Used in the NBS and other industry specification/pricing products such as Spons
- CAWS has now been incorporated into Uniclass
What is Uniclass and how can it be used in design and specification?
- A voluntary classification system for the construction industry that can be used to organise information throughout all aspects of the design and construction process
- Now on version 3, ‘Uniclass 2015’, which supersedes Uniclass and Uniclass 2
- Compatible with BIM
- Maintained by the NBS to ensure it remains relevant and mapped to other systems
What is the NRM and how can it be used in design and specification?
Suite of three documents published by the RICS to provide a standard set of measurement rules for estimating, cost planning, procurement and whole-life costing for construction projects
What information is contained within NRM1?
Order of cost estimating and cost planning for capital building works
What information is contained within NRM2?
Detailed measurement for building works
- Replaces the Standard Method of Measurement (SMM7)
- Provides a set of detailed measurement rules for the preparation of bills of quantities or schedules of rates for obtaining tender prices
- Departure from CAWS and Uniclass, as it has its own system of indexing
What information is contained within NRM3?
Order of cost estimating and cost planning for building maintenance works