Design Economics & Cost Planning Flashcards
(12 cards)
What sorts of things do you need to consider when looking at benchmarking cost data for new projects?
- Time
- Location
- Abnormals on the project being used as a benchmark and the new project
How could the form of contract affect your estimate?
Different ways contracts are managed i.e.
- more admin heaving contracts may incur more professional fees.
- d&b contract would incur lesser design fees preconstruction
What is the difference between a cost plan and an estimate?
- Estimate is a higher level based on limited design information. Typically priced by m2 or functional unit.
- A Cost Plan is based on more detailed design information where its possibly to quantify works and broken down elementally in accordance with nrm1
What are the different stages of the RIBA plan of work?
0 - Strategic Definition
1 - Preparation and Briefing
2 - Concept Design
3 - Spacial Coordination
4 - Technical Design
5 - Manufacturing & Construction
6 - Handover
7 - In use
How would you select appropriate benchmark data?
I would use a combination of past similar project and BCIS data.
When benchmarking I would select the 4 most similar against my clients brief, adjust for time and location and any abnormals.
What is inflation and how is it dealt with under NRM?
Inflation is the fluctuation of prices and fall in purchasing power of money - for example increases in labour, plant, materials and equipment.
Tender inflation - allowance from estimate base date to date of tender returns.
Construction inflation - allowance from tender returns to the mid point of construction.
What is the difference between Lifecycle Costing and Whole Life Costing?
LCC - Cost of constructing and operating a building.
WLC - Overall picture of the project including purchase of the land, construction and income from the project.
What impact does storey height have on costs?
Over a certain number of stories (5/6), costs increase exponentially
Due to items like foundations, MEP, access (additional lifts, stair cores) etc.
What % deviation would you deem appropriate to include in a Stage 4 PTE with full design information?
+/- 5%
How have you advised the MoJ on whole life costing?
I advise these in conjunction with the clients design team.
Firstly I price all the individual options for a project.
Then after discussions with the design team I consider which elements of are to be replaced when and the annual costs of maintenance and operation,
This information is inputted into the MoJ’s LCC template.
This ultimately calculates NPC and LCC for each option which I am then able to advised as part of the cost report which accompanies the cost plan.
How do you provide advice regarding design efficiencies?
- Efficiencies on Complex Care Home with the steel frame solution achieving a greater loft space
- Net to gross costs
- Wall to floor ratios
How did you build up the cost for the roof utilising NRM?
- Roof Structure (decks, slabs, trusses, rafters, eaves)
- Roof coverings
- Roof drainage
- Rooflights
- Roof features (false chimneys, handrails, fall arrest etc.)
