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a)
Erect independent tubular access
scaffolding to facilitate access
to the
roof area.
b) Create initial external
opening to the loft area and
provide temporary weather
proofing and secure.
c) Provide replacement water
storage tank with valves, tank
lids etc. where necessary.
d) Remove and replace central
heating feed and expansion tank
complete with
insulation jacket and ball
valve.
e) Block off and secure existing
loft hatch and make ready for
plastering.
f) Cut into existing brickwork
and prepare to receive
structural steel bearing
spreader
plates.
g) Install approximately 100 x
600 x 20 mm structural steel
spreader plates to support
steel beams depending on your
loft size (size given example).
h) Provide 25 tonne mobile
telescopic crane for site duties
when necessary.
i) Liaise where necessary with
the following government bodies
: -
1) Local Authorities Highways
Department.
2) Local Police Traffic
Division.
3) Local bus Operator (in case a
diversion is required)
j) Install heavy duty steel
beams (RSJs) and universal beams
(UB) in accordance
with Structural Engineers design
with ends of steel beams bearing
securely upon
structural steel spreader
plates. Provide structural steel
spliced beam connections
incorporating where necessary
fabricated bolted spliced
connections comprising of
20mm end plates with 10mm fillet
welds all around and a minimum
of 12 super
strength grade 8.8 bolts per
connections.( where specified
provide structural steel
connections ). All steel
structure to be coated with
anti-corrosive coating and to
provide a minimum of 30 minute
fire resistance.
k) Install new independent
structural floor joists
incorporating 200 x 50 stressed
graded kiln dried structural
floor joists at 400 centres. All
Joists to be fixed directly to
steel frame and solid web
noggins to be placed between
structural joists at steel beam
connection point to prevent
floor movement. Secure
structural floor joists below
stud
wall partitions to avoid
deflection or bowing.
l) Form structural walls to
dormer incorporating 100 x 50
stress graded structural
kiln timber at 400 centres.
Provide triangulated bracing
through dormer stud work to
avoid movement and vibration.
Clad dormer with 18mm external
quality plywood to
achieve stability against
vibration through wind and other
loadings. Finish internally
with fibreglass insulation,
plaster board and skim of
plaster. Provide and fit PVC-U
fascia board, soffit, guttering
and down pipes to dormer. Fix
coloured small plain tiles
to match existing at appropriate
gauge, all in accordance to
BS747 Code of Practice
144 Part III 1970. Provide Code
4 lead flashing where necessary
on all roof junctions.
Flat roof to be constructed of
plywood on softwood joists,
finished with 3 layers of felt,
infill with multi layered foiled
loft insulation for vapour
barrier,
plaster boarded and finished
with skim of plaster.
m) Supply and fit PVC-U windows
to (BBA, BSI and EN ISO 9002),
internally
glazed. Glass sealed units,
Pilkington glass, low "E" to
comply with document "L" of the
Building Regulations as of the
1st April 2002. Provide
alternative means of assisted
escape in the event of fire
through a Velux fire escape
window, fitted to front slope of
roof.
n) Internal partitions are
formed of the following 100 x 50
sawn vertical timber
studs complete with base middle
and head rails overlaid with
laminated plaster board
and filled with acoustic and
thermal insulation, and skim
finished on either side.
o) All electrics to comply to
Electricity Board requirements
and complying with the
latest local authority building
control part p specification.
p) Plumbing and heating: to deal
with all plumbing points,
rooting in copper tubes
as required to new radiators and
taps. Customer to supply all
sanitary ware, pump,
water heaters for move up to
install.
q) Prior to installing new stair
well, ensure that all door ways
are temporarily sealed.
Install new stairwell, closed
tread softwood string staircase
to provide access to
converted area. We also fit
softwood handrail to
match/similar to existing.
r) Second fixings: Supply and
install 150 mm moulded/shaped
skirting through out
converted area. Supply and
install 75 mm moulded/shaped
architraves to door
openings through out converted
area. Fix 30 minute fire
resistant timber doors to
habitable areas within converted
area. Provide and fix self
closing devices to all doors
including the existing
stairwell. Create storage area
with access hatch with chip
board
flooring. Install Smoke detector
system on each floor,
interlinked and wired to the
mains.
s)
Arrange final inspection with
the Local Authority Building
Control.
Once second fixings have been
completed the local authority is
contacted for the final
inspection. |