the drawing board limited
Lychgate House
Church Street
Long Preston
Skipton
BD23 4NJ
Tel/Fax: 01729 840777
Method Statement for the adaption and alteration of the vacant agricultural
building at
Highgate Barn, Windle Lane, Cononley BD20 8JX
for Mr & Mrs R Smith

The entire existing asbestos sheet roof has been removed to permit the walls
to be increase in height to permit the construction of a traditional blue slate
insulated roof. Each sheet should be double wrapped in polythene sheeting
(min 1000g) with taped joints and safely carted away to a suitable licensed
disposal site.

The defective bulging area of the existing north east wall has been removed
resulting in the collapse of the flanking construction this should be re-built in
insulated cavity construction with matching facing materials - tying into the
existing remaining construction with structural metal ties.

The existing timber lintels over window and door openings need to be
replaced with natural stone lintels and any loose or disturbed wall above to
be re-built in natural stone all to match existing premises.

Excavations for the extension and new wall should be prepared at a min
depth of 750mm allowing for at least 150mm spread either side of
constructional wall.

Excavation to be on level ground with adequate bearing capacity – this
should be inspected by the Local Authority Building Control Officer and
approved prior to the placement of foundation concrete.
Cont2/…
The Drawing Board (UK) Limited
Director: Robert W Hodgkiss MRICS MB Eng
Company No: 5789678 Registered in England
Registered Office: Lychgate House, Church Street, Long Preston, Skipton BD23 4NJ
2/…

The internal perimeter of the building should be excavated to a min depth of
450mm to permit foundation for internal lining wall to be adequately
supported - this also should be inspected by the Local Authority Building
Control Officer and approved prior to the placement of foundation concrete

Should any area of the walls require underpinning then the excavations
should be inspected and approved by the local Building Control Surveyor
prior to the laying of concrete to support the existing wall. Ensure supporting
contact with underside of the existing wall with well rammed sand/cement
dry packing (cement : mortar = 1 : 2 or 3) in maximum 1m lengths. The
sequence of these lengths should be arranged so that working in adjoining
bays is avoided until one leg of underpinning has been completed, pinned
and cured sufficiently to support the existing wall above.

All existing retained external walls are to have an internal 100mm wide cavity
containing 50mm thick rigid insulation and be lined with 100mm thick
concrete block wall plastered internally.

All new and re-built external walls are to match the appearance of the
external walls of the existing premises.

Lay horizontal damp proof course min 150mm above external ground level
(dpc to be inspected and approved by the local Building Control Surveyor
prior to covering up).

The existing concrete ground floor is to be removed and replaced with well
compacted stone hardcore, polythene damp proof membrane (or radon
barrier if appropriate), 70mm thick rigid insulation with min 25mm thick
perimeter insulation and 100mm thick concrete floor covering.

Excavate for and lay 100mm dia pvc-u drains from the building to existing
drains and allow for min 1:40 gradient and min 150mm surround of loose pea
gravel (all drainage to be inspected and approved by the local Building
Control Surveyor prior to covering up).

Construct suspended timber first floor supported on ground floor walls and
include for sound insulation within floor construction (double joists below first
floor partitions)
Cont3/…
The Drawing Board (UK) Limited
Director: Robert W Hodgkiss MRICS MB Eng
Company No: 5789678 Registered in England
Registered Office: Lychgate House, Church Street, Long Preston, Skipton BD23 4NJ
3/…

Build up external walls and construct roof of natural blue slate on treated
timber battens on breathable roofing felt on supporting timber rafters with
insulated sloping/horizontal ceiling. Allow for ventilation of any roof void.

Any service pipes that penetrate elements of structure are to be bridged
over with suitable pre-cast concrete lintels. Extract fan ducts from kitchen,
wc and bathroom are to penetrate the external walls and to be finished with
external grill.
Upon completion of the conversion the jointing of the external walls is to be
raked out and all external walls to be re-pointed to provide similar
appearance to all elevations.


Proposed timetable:






October 2008 - commence building work
December 2008 – complete roof extension and premises (make watertight)
April 2009 – 1st fix
June 2009 – 2nd fix
August 2009 – external works and completion
September 2009 – occupy premises

Any departure from this Method Statement/programme of work should be
brought to the attention of the Local Authority and approved in writing.


Robert W Hodgkiss MRICS MBEng
For and on behalf of The Drawing Board (UK) Limited

October 2008
The Drawing Board (UK) Limited
Director: Robert W Hodgkiss MRICS MB Eng
Company No: 5789678 Registered in England
Registered Office: Lychgate House, Church Street, Long Preston, Skipton BD23 4NJ