CDM Regulation

It is legal requirement to abide by the Construction Design and Management Regulations for all projects that last for longer than 30 days and involve more than 500 person days of construction work. Since this project falls into that category, it is the responsibility of the designer to take CDM regulations into consideration when designing a project. The aim of the CDM regulations is to integrate health and safety into building projects, improve planning, identify and eliminate hazards early on in a project, it also outlines the responsibilities for health and safety issues in a building project (CDM Regulations, 2007). A checklist of hazards to be considered in design is attached.

The first step that the designer must take is to appoint a CDM co-ordinator who is charged with helping the various stakeholders understand their role in reducing the health and safety risk at each stage of project.

The HSE must be notified as the site is classified as modifiable, to do this, the HSE must receive a Notification of Construction which is to be completed by the CDM co-ordinator, a blank copy of such a document is shown in Appendix ?.

Risk Assessment and Work Method Statements are required by CDM regulations to detail the construction process and to identify any risks. Risk assessments will carry out for all the major risks and mitigation measures.

General Construction Method Statement:

Method Statement of Ground Investigation /Site Demolition

Bring to site light borehole rig

Carry out borehole survey

Measure groundwater level of boreholes

Backfill light percussion boreholes

Deliver samples to Quality Assured laboratory

Allow for permeability test of samples from site

Allow for organic matter test of samples from site

Allow for ph value test of sample from site

Allow for contaminants test of sample from site

Bring to site demolition plant

Clear the site generally and locate existing services

Remove trees as per contract schedule

Demolish brickwork building as per contract demolition schedule

Demolish concrete building as per contract demolition schedule

Demolish metal buildings as per contract demolition schedule

Level site

Remove from site demolition plant.

Method Statement of Earthworks

Organise the delivery of dewatering, plant excavators and dump trucks

During piling operations remove any obstructions encountered

Set out excavation line and level

Excavate ground beams and pile caps

Install adequate temporary works with sheet piles and struts to support the

excavation

Remove and dispose of excavated soil

Sump pump the ground water from the excavation

Landscape the site

Hazards to be considered in Design

Hazard examples Considered Actions

A. select the position and design of structures to minimise risks from site hazards, including:

a) buried services, including gas pipelines;Yes Maps of Utilities have been

obtained.

b) overhead cables;Yes Maps of Utilities have been

obtained.

c) traffic movements to, from and around the site; Yes Study of site access and Risks Assessment of vehicle has been carried out.

d) contaminated ground, for example minimising disturbance by using shallow excavations and driven, rather than bores, piles.

Yes Ground investigation has been carried out.

B. design out health hazards, for example:

a) specify less hazardous materials, e.g. solvent-free or low solvent adhesives and water based paints;

Yes Avoid using hazardous materials in construction.

b) avoid processes that create hazardous fumes, vapours, dust, noise or vibration, including disturbance of existing asbestos, cutting chases in brickwork and concrete, breaking down cast in0situ piles to level, scabbling concrete, hand digging tunnels, flame cutting or sanding areas coated with lead paint or cadmium;

Yes

It is considered in the decision matrix of materials choose.

c) specify materials that are easy to handle, e.g. lighter weight building blocks;

Yes It is considered in the decision matrix of materials choose.

d) design block paved areas to enable mechanical handling and laying of blocks.

Yes It is considered in the site plan.

C. design out safety hazards, for example:

a) the need for work at height, particularly where it would involve work from ladders, or where safe means of access and a safe place of work is not provided;

Yes Risks Assessment of working at height has been carried out.

b) fragile roofing materials; Yes It is considered in the decision matrix of materials choose.

c) deep or long excavations in public areas or on highways; Yes No excavation in public areas or highways is required.

d) materials that could create a significant fire risk during construction.

Yes It is considered in the decision matrix of materials choose.

D. consider prefabrication to minimise hazardous work or to allow it to be carried out in more controlled conditions off-site including, for example:

a) design elements, such as structural steel work and process plant, so that sub-assemblies can be erected at ground level and then safely lifted into place;

Yes It is considered in the construction methodology. Risks Assessment of lifting beams has been carried out.

b) arrange for cutting to size to be done off-site, under controlled conditions, to reduce the amount of dust released.

Yes It is considered in the construction methodology.

E. design features that reduce the risk of falling/injury where it is not possible to avoid work at height, for example:

a) early installation of permanent access, such as stairs, to reduce the use of ladders;

Yes It is considered in the construction methodology.

b) edge protection or other features that increase the safety of access and construction.

Yes It is considered in the construction methodology.

Hazard examples (cont.) Considered Actions

F. design to simplify safe construction, for example:

a) provide lifting points and mark the weight, and centre of gravity of heavy or awkward items requiring slinging both on drawings and on the items themselves;

Yes It is considered in the construction methodology.

b) make allowance for temporary works required during construction; Yes It is considered in the construction methodology.

c) design joints in vertical structural steel members so that bolting up can easily be done by someone standing on a permanent floor, and by use of seating angles to provide support while the bolts are put in place;

Yes It is considered in the construction methodology.

d) design connections to minimise the risk of incorrect assembly. Yes It is considered in the construction methodology.

G. design to simplify future maintenance and cleaning work, for example:

a) make provision for safe permanent access; Yes Risks Assessment of permanent access has been carried out.

b) specify windows that can be cleaned from the inside of buildings; Yes It is considered in the plan view layout.

c) design plantrooms to allow safe access to plant and for its removal and replacement;

Yes It is considered in the plan view layout.

d) design safe access for roof mounted plant, and roof maintenance; Yes It is considered in the plan view layout. Risks Assessment of working at height has been carried out.

e) make provision for safe temporary access to allow for painting and maintenance of facades, etc. This might involve allowing for access by mobile elevating work platforms or the erection of scaffolding;

Yes It is considered in the plan view layout.

f) make provision for adequate cleaning facilities in locations convenient to areas which will require cleaning so that equipment and water can be transported safely;

Yes It is considered in the plan view layout.

g) select finishing materials such as work surfaces and flooring, which require minimum maintenance and can be cleaned safely.

Yes It is considered in the decision matrix of materials choose.

H. identify demolition hazards for inclusion in the health and safety file, for example::

a) sources of substantial stored energy, including pre- or post-tensioned members;

Yes It is considered in the decision matrix of materials choose.

b) unusual stability concepts; Yes It is considered in the decision matrix of materials choose.

c) alterations that have changed the structure. Yes It is considered in the decision matrix of materials choose.

UtilitiesThe buried cable and services in or around the site has been check before any construction works start. Majority of the cables are parallel to Anglesea Road, but some of them go through the site, therefore precautions during the digging process have to be considered in order to avoid dangers related with the line breakage

Ground contaminationGround investigation has been carried out, the result of borehole log show no investigation on ground contamination is required.

Traffic Routes Traffic Routes will need to design for all vehicles coming through the site and pedestrian access in order to meet the CDM regulations. As there will be vehicle movements on site with materials and equipment being delivered and unloaded.An emergency assembly point will be identified on site with indicative signs and all site workers will be made aware of it.

MaterialsThe choice of materials is based decision matrix, the criteria which include sustainability, ease of construction etc.

ExcavationThe layout of the site and the positioning of equipment is designed so as to avoid overloading of the excavation site.

BibliographyGuidance for principal contractor. (2007). construction design and management cdm. Industry Publications.Health and Safety Executive. (2009). The safe use of vehicles on construction sites: A guide for clients, designers, contractors, managers and workers involved with construction transport. Health and Safety Executive.Traffic management on site. (2012). Retrieved 2 12, 2012, from Health and Safety Executive: http://www.hse.gov.uk/construction/safetytopics/vehiclestrafficmanagement.htm