Building Construction Handbook, Eighth Edition

Typical Details ~

insulated cavity closer Eaves

barrier (see Building

Regs. A. D: B3,

Section 6 [Vol. 1]

and 9 [Vol. 2]) and

plywood bracket

bolted channel

section truss

storey height

modular frame

brickwork

outer leaf

channel section

floor joists

ground

floor

slab

channel section

truss members

header binder or wall

plate

stud framing

fire retardant insulation

wall tie breather membrane

50 mm

cavity

insulation between studding

and into cavity

Intermediate floor Ground floor

plaster-

board

plywood

deck dpc

channel

section

floor

joists

insulated cavity

barrier/fire stop if

a compartment floor

concrete slab

or beam and

block floor

dpm

insulation

anchor bolt screed

12.5 mm vapour check

plasterboard screwed

to stud framework

Advantages ~

• Factory made, therefore produced to quality controlled
  standards and tolerances.


• Relatively simple to assemble on site † bolted connections in
  pre-formed holes.


• Dimensionally stable, consistent composition, insignificant
  movement.


• Unaffected by moisture, therefore will not rot.


• Does not burn.


• Inedible by insects.


• Roof spans potentially long relative to weight.

Disadvantages ~

• Possibility of corrosion if galvanised protective layer is
  damaged.


• Deforms at high temperature, therefore unpredictable in fire.


• Electricity conductor † must be earthed.

Steel Frame Construction (2)