Level 1,2,3 Questions Flashcards
Can you tell me how you’ve advised a client on the foundation selection?
Outside area of competence BUT:
Soil type
Cost/Time
Type of structure
Buildaibility (access, proximity, site conditions)
What is piling?
Where RC concrete is in the ground to take the load of the structure
Typically reinforced
Used on large buildings with heavy load and subsoil is not able to take the load
What are the advantages of CFA piling?
Low levels of noise and vibration
High load bearing
Suitable for a wide range of ground conditions
What is a typical ground floor slab build up?
Finish
Screed
DPM
Insulation
Slab
Sand/Blinding
DPM below slab
Tell me about the two ways basements can be constructed?
1) retaining wall and raft basement
2) Piled basement
What are the different basement grades? How might these be achieved?
Grade 1 - Some leakages and damp areas tolerable. Local drainage may be required.
Grade 2 - No water penetration but damp areas tolerable dependant on the intended use. Ventilation may be required to control condensation.
Grade 3 - Dry environment. No water penetration. Additional ventilation, dehumidification or air conditioning appropriate to intended use.
Grade 4 - Totally dry environment. Requires ventilation, dehumidification, or air conditioning appropriate to intended use.
They could be achieved through mastic asphalt tanking, cavity drain installation and waterproofing concrete
Tell me the 7 stages of the RIBA Plan of Work
0 - Strategic Definition
1 - Preparation and Briefing
2 - Concept Design
3 - Spatial Coordination
4 - Technical Design
5 - Manufacturing and Construction
6 - Handover
7 - Use
When was it (RIBA plan of work) published?
2020 was the latest, 2013 before that
How does the RIBA plan of work relate to your role?
It relates to my role as a QS because it sets out clearly what is required as an output from myself at each RIBA Stage, as well as overall project milestones/outputs.
What happens in Stage 0 of RIBA plan of work?
Client requirements are established and business case is drafted
What happens in Stage 1 of RIBA plan of work?
1) Project brief is established
2) Undertake Feasibility Studies
3) Agree Project Budget
4) Source Site Information including Site Surveys
5) Prepare Project Programme
6) Prepare Project Execution Plan
7) Discussions around procurement strategy
What happens in Stage 2 of RIBA plan of work?
1) Prepare Architectural Concept incorporating Strategic Engineering requirements and aligned to Cost Plan, Project Strategies and Outline Specification
2) Agree Project Brief Derogations
3) Undertake Design Reviews with client and Project Stakeholders
4) Prepare stage Design
5) Programme
6) Obtain pre-application Planning Advice and possibly submit planning app
What happens in Stage 3 of RIBA plan of work?
1) Cost plan
2) Further design coordination
3) Definitely submit detailed planning app
What happens in Stage 4 of RIBA plan of work?
1) Prepare Construction Phase Plan
2) Submit F10 if applicable
3) Finalise design
4) Tender to contractors or PCSA if two stage
5) Typically a PTE is done
What happens in Stage 5 of RIBA plan of work?
Construction
How many units was LTH?
54 units
How many units was QSL?
110
What is MMC?
Modern methods of construction - is a fast way of delivering new buildings, by maximising the efficiency of material and human resources.
Which worked out better in terms of cost between Brick Slip and Traditional Brick Masonry
Typically 150/200 more than a traditional brick masonry wall
What would have been the build up for brick slip?
brick slip like 25mm
rails that brick slips are hung onto
brackets
then standard wall build up e.g.
minerall wool insulation
breather membrane
Cement board
SFS stud with insulation inside
2 layers plasterboard
What is the build up for traditional brick masonry?
Traditional brickwork with brick ties 102.5mm
50mm cavity
120mm rigid insulation,
12.5mm Siniat Weather Defence Board
100mm Metsec with 100mm mineral wool insulation within
Vapour control layer
2nr layers plasterboard
overalll thickness 415mm
What was the cost/m2 difference between brick slip and traditional masonry?
ANSWER
How would the bathroom pods have been stored?
Offsite typically then just in time delivering for installation
How did you account for programme when comparing the two methods (traditional vs MMC)?
Programme for traditional was circa 90 weeks, MMC contractor provided an 82 week programme.
Were there any other MMCs you could have considered for LTH?
Bolt on balconies
Precast frame
precast foundations
What is the build up of a green roof for 200BPR?
vegetation layer, filtration layer, protective membrane, insulation, vapour layer, structural layer
What is the build up of a blue roof for 200BPR?
either a paving layer or vegetation layer, filtration layer, drainage layer (like eggshell crate system), attenuation layer, waterproofing layer.
Also important to note inspection chambers throughout the roof area to attenuate the water.
What is a green roof?
A roof covering that is finishes with a layer of vegetation.
What is the key performance information for each green and blue roof for 200BPR?
Blue roof is stuff like discharge rate of water, water storage etc
What were the budget costs for green and blue roof for 200BPR?
£200 for green roof and £350 for a blue roof per m2
What factors influence the choice of green and blue roof?
Planning, loading onto existing structure, aesthetics, cost, drainage strategy
What factors influence the cost of green and blue roof?
Actual system used, whether additional strengthening would be required due to additional load, space requirements if another system like an attenuation tank is used.
WHBG - How thick was the screed finish to be?
50-70mm depending on the existing level, there was also a requirement for a mesh reinforcement layer for the screed/cement
WHBG - What advantages did the composite metal deck have over the precast hollowcore planks?
1) There was no requirement for additional screed as the concrete could be power floated to achieve a flush finish.
2) Easy to handle on site, weight of the steel deck was circa 10kg, there was a requirement for plant to lift the hollowcore planks in place.
WHBG - What was the cost difference between composite metal deck and pre cast planks?
Precast hollocore planks circa XX/m2
Composite Deck was Circa 250/m2
What were the impacts of programme between composite metal deck and pre cast planks?
No real programme impact for the composite metal deck
Were there not economies of scale from concrete for the WHBG floor options?
Na the floor area was circa 180m2 so not really any change for economies of scale i dont think
Explain what the original construction was for each of the three? What is the project? What are the houses? Are they the mid-rise buildings?
ANSWER
How many storeys are considered mid-rise?
I consider mid rise to be 5-10 stories, however I know other regulations consider high rise to be over 7 stories
What was the external wall for the original masonry?
external wall was brick masonry with SFS system, the alternative would be loadbearing masonry
What was the cost saving from changing the frame for the maisonettes on Eastfields?
Circa £30k per 4 storey maisonette
What was the programme saving from changing the frame for the maisonettes on Eastfields?
It was not considered due to be early on within the Stage 2 design.
Loadbearing masonry wall build up?
Brickwork 102.5mm
Cavity 50mm
Insulation 125mm
Blockwork 140mm
Plasterboard 25mm
