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AIG Construction Ltd

AMA Crawley Mosque Refurbishment

METHOD STATEMENT FOR FOUNDATION AND/OR SERVICES TRENCHING

GENERAL NOTE

There will not be any excavation for foundations or drainage works within the Root Protection

Areas as indicated on drawing no. 12019.RPO1

TASK

Foundations

Environmental Factors

The site is level and clear of obstructions, there are no known contamination issues

Ground Conditions

Clay

Number of operatives involved

5

Training

All operatives will be trained and competent in the task to be carried out.

All equipment will be inspected for proper operation and safety before use.

Plant

None — foundations will be dug by hand.

PPE

Hard hat, protective footwear, gloves, high visibility vests.

Method of work

1. Foundations will be set out by the engineer.

12019 Groundwork Method Statement, 27 06 2013

RECEIVED

- 1 JUL 2013

CRAWLEY BOROUGH COUNCIL

Page 1 of 3

2. The operatives will dig the excavation to the required level. (If depth and ground conditions

require it then a support system will be considered.) All work will be outside the Tree

Protection Area

3. Spoil will be removed by barrow to an agreed area.

4. Imported concrete will be placed by the supplier of ready mixed concrete.

5. Blocks will be positioned close to the work area to minimise manual handling

6. Once cured the blocks will be laid to bring to level of DPC

7. Work area will be cleared of debris on completion of stage.

METHOD STATEMENT FOR BOUNDARY RAILING CONSTRUCTION WITHIN TREE ROOT

PROTECTION ZONES '

GENERAL NOTE

The new boundary railings along the front elevation pass through the existing tree canopy to be

retained. There will be 7no. foundation pits for the railing posts, each one approximately 250mm

square x 900mms deep.

Task

Protection of trees to be retained in the completed development

Environmental factors

The trees are on the edge of the site near to boundary fences, they do not obstruct access

Number of operatives involved

2

Training

All operatives will be trained and competent in the task to be carried out.

All equipment will be inspected for proper operation and safety before use.

Plant

None required. All work by hand as the Method Statement below

PPE

Hard hat, protective footwear, gloves, high visibility vests

Ground Protection

During fencing work, ground protection shall be maintained as Section 6.2 BS5837: 2012

12019 Groundwork Method Statement, 27 06 2013

Page 2 of 3

Protection is required for pedestrian movements only, comprising single thickness scaffold boards

on a compression resistant layer on geotextile membrane

1. Temporary fencing to be maintained for the duration of the fencing work within the RPA

2. No materials or plant to be stored within the RPA at any time.

Hand Excavations within Root Protection Areas

The purpose of the excavation is to establish the presence/absence of significant roots within the

RPA's of retained trees during excavations so that important roots can be retained undamaged.

Method:

a) Excavations in post locations will use hand tools like forks, spades and shovels. An 'Air

Spade' could be used in special cases but the depth of excavations is limited with these

tools. Other power tools must not be used unless approved by an arboriculturist.

b) During excavations any roots less than 25mm should be cut cleanly to the sides of the

excavation with a pair of secateurs. Shallow Air Spade excavations may not need this but

deeper excavations will need fine roots removed to allow access to remove loosened spoil.

Larger roots will be retained in the pits.

c) The depth of the excavation to discover the majority of roots should be up to lm for

foundation pits, service trenches or to the maximum depth of proposed structures if less

than 1 metre deep.

d) Roots to be retained, if exposed for more than one hour, will be covered with Hessian to

prevent damage from high or low temperatures depending on the ambient weather

conditions and it will also protect them from sun scorch. Roots may also need to be

protected with cut sections of plastic pipe, if excavations using hand tools are close to them,

to prevent physical damage.

e) If any large roots (>25mm) are found within the excavations these will be recorded and

retained. This information will be passed to the arboricultural, architectural design team. In

many circumstances the position of the foundation can be altered to allow important tree

roots to be retained. In some cases roots can be retained in the pit, sleeved and 'bridged'

by the foundation or structure.

12019 Groundwork Method Statement, 27 06 2013

RECEIVED

- 1 JUL 2013

CRAWLEY BOROUGH

COUNCIL

Page 3 of 3