Construction, Tech and Environmental Service Flashcards
What type of construction was Vigo Street, Mayfair?
The style would be Georgian (1714- 1837). But it was redeveloped in the early 19th Century
Construction
Foundations – Shallow brick footings if any.
Skeletal Steel/ iron frame – clad with stone and rubble infilled
Basements – stone flags
Floors – Suspended timber
Finishes – Lath and plaster
Roof – mansard (combo of king of queen posts)
Roof finish – Slate
Windows – Timber sash.
Can you tell me the different construction of a Victorian property (1837-1901)
Foundations – Shallow possible early type DPC (lead, slate, bitumen
Walls - Solid 225mm walls, soft clay bricks with lime mortar
Floor – Timber suspended floors (Airbricks installed to ventilate
Roof – King or queen poste truss
Roof finish – Clay or Slate
Windows timber sash
Can you tell me the typical construction of an industrial warehouse?
Foundations – typically pad foundations below structural columns
Structure – Portal steel or concrete frame with bracing and wind posts
Walls – Cavity masonry, built -up or composite cladding.
Roof – Built up cladding system/ composite
Can you tell me the different type of substructure available? And when would they be used)
- Strip (Low rise structures, housing)
- Pad (Normally used to support single point loads such as columns)
- Raft (Normally where ground conditions are poor and structural loadings are low)
- Piles (Large structures or situations when the ground/ soil has low bearing capacity.
What must you consider when selecting foundations?
Ground conditions and load bearing strata.
What are the different types of super structure you are aware of?
- Timber
- Steel
- Concrete
What are the advantages of using steel?
- Prefab off site
- Quick to erect on site
- Can be recycled
- Unskilled labour
- High tensile strength
What are the disadvantages of using Steel?
- Requires high skilled operative
- Not adaptable as designers are restricted by standardized sizes
- Need corrosion and fire protection
- Long lead times/ expensive
In situ concrete advantages?
- Requires formwork
- Slow process due to curing time, erection of formwork
- Weather dependent
- Reinforcement is required.
In situ concrete disadvantages?
- Requires formwork
- Slow process due to curing time, erection of formwork
- Weather dependent
- Reinforcement is required.
Precast concrete advantages?
- Prefab off site
- Quick to erect
- Low skilled labour
- Fire proofing not required
Precast concrete disadvantages?
- Large lifting gear required
- Not weather dependent
- Can be damaged during transportation
- Reinforcement is required
Flat roof coverings?
- . Reinforced Bitumen Membrane
- • Polymeric Single-ply roofing
- • Mastic Asphalt
- • Lead, Zinc, Copper, Steel sheet
- • Profiled Sheets
- • Liquid coverings
