Struc_Civil Eng DRA

Structural & Civil Engineering Design Risk Assessment

S306G

PROPOSED FIRE STATION BALLYMOTE, CO. SLIGO

CLIENT: SLIGO COUNTY COUNCIL DATE: MARCH 2009 ARCHITECT: SLIGO BOROUGH COUNCIL OUR REF: S306 (G) Design intent is that the contractor carries out the work in accordance with all of the relevant drawings, health & safety legislation specification and regulations. Contractor to determine the risk level and mitigate the risk. This Design Risk Assessment is structured as one and will be forwarded to the Project Supervisor Design Process for inclusion in the preliminary health & safety plan.

Designer s non exhaustive Assessment of Safety during Design Construction and Maintenance taking account of the Principles of Prevention Company: OCSC

Designer: John Kiernan Date: March 2009

Project: Ballymote Fire Station

Checker: Andrew McDermott

Sheet No: 1 Revision No: -

Design Stage: Location Decisions/Action Activity

Site access/egress Site compound Traffic routes Pedestrian routes Key Hazards Identified Contact with moving vehicles & plant Unauthorized access onto site Slips & trips Falls from a height Fire or other emergency Electricity Pedestrian Routes

Entire Site

Contractor to note steelwork delivery & installation Contractor to propose adequate safe access point & install perimeter hoarding. Contractor to note the presence of overhead esb cable which is to be diverted. Refer to drawing S306G-1001

Items to be drawn to the attention of Contractor (s): Contractor is to be aware of existing pedestrian traffic, existing vehicular traffic and cyclists. Proximity to live mart. Ensure that all existing emergency routes are kept clear at all times.





Sheet No: 2 Revision No: -


Demolition/dismantling/stripping out/ alteration/renovation possibly including: Roof & walls

• Dangerous structures • Loadbearing Masonry Walls • Concrete Roof Slab

Key Hazards Identified Live Services Uncontrolled collapse Falls from a height Hazardous materials/substances Possible work with asbestos – respiratory injury/carcinogenic Dust Noise/Vibration Fire or other emergency Slips & trips Temporary Instability

Entire Site

Condition survey of building to be noted by the contractor Proposed Methodology to be addressed by the contractor Temporary works to be designed by the temporary works designer appointed by the contractor Refer to Asbestos survey report by Phoenix Environmental Safety Ltd. Contractor must survey the existing services prior to commencement of the works.

Items to be drawn to the attention of Contractor (s): The existing building to be demolished is in close proximity to the mart.





Sheet no: 3 Revision No:

Design Stage: Location Decisions/Action Key Hazards Identified

Existing Underground and Over Ground Services

• Foul & surface drainage • Access to chambers • All other underground utilities • Falls from a height • Trips & falls • Fire/explosion • Bacteriological/chemical/hazardous

substances • Cuts & abrasions • Collapse of excavation • Confined spaces • Manual handling • Weils disease • Unsupported exposed existing drainage

lines • ESB cables, wires & buries services.

Entire Site

Contractor to note restricted access to chambers Contractor to note confined space entry to chambers Contractor to take account of underground cables/services by a site CAT scan and avoid work in close proximity where reasonably practicable. Refer to drawings S306G-1001 and S306G-1011 Temporary works to be designed by the temporary works designer appointed by the contractor

Items to be drawn to the attention of Contractor (s): Provision to be made for emergency shut down of gas/fuel/oil/electricity systems.







Earthworks/ground works/external works • Rock Breaking – maximum allowable

noise limit of 70 decibel on the façade of adjoining buildings

• Rock level varies across the site from 1.5 m to 3 m

• Earth moving • Excavations generally 1-2 m deep for

foundations. • Excavations up to 3 m deep for

underground training water tank • Retaining walls • Sewers

Key Hazards Identified Ground contamination Live services Instability of excavations Instability of adjacent structures Flooding/ground water Confined spaces Noise/Vibration Falls from a height Contact with live sewers

Entire Site

Client needs to address non-negligence insurance Contractor to take account of underground cables/services by a site CAT scan and avoid work in close proximity where reasonably practicable. Refer to drawings S306G-1001 and S306G-1011 Contractor to provide safe excavations to HSA guidelines. Temporary works to be designed by the temporary works designer appointed by the contractor

Items to be drawn to the attention of Contractor (s): Barriers & lighting to be placed around all excavations. No undermining of any existing neighbouring permitted. Foundations are not to be loaded until they have cured for at least 7 days. Max allowable ground bourne vibration at site boundary limited to 5mm/second.







Working space/working platforms

• Confined Space – rc tower stairs & landings

• Access to chambers and underground Water Tank

• Falls from height – Side Cladding up to 8 m high

• Construction of 12 m high rc training tower

Key Hazards Identified Falls from unprotected edges Manual Handling & Musculoskeletal injuries Fire/emergency evacuation Collapse of platform Instability of excavations Flooding/ground water

Entire Site

Edge protection to be put in place as soon as possible Contractor to coordinate all temporary works with temporary works designer. Contractor to allow for early installation of stairs & floors Contractor to refer to HSA code of practice for access & working scaffolds. Contractor to provide safe excavations to HSA guidelines.

Items to be drawn to the attention of Contractor (s): Edge protection to be installed prior to commencement of any works. Contractor to prepare & submit a method statement detailing the works for approval prior to commencement. Training tower roof not to be constructed until all concrete stairs & landings are poured.







Erecting/constructing structures

• Insitu reinforced concrete ground beams

• Block work up to 6 m high • Insitu reinforced concrete block

columns, walls and ringbeam. • Insitu reinforced concrete walls for

training tower – 12 m high • Steel Frame and Truss to Roof Level • Hollow Core Floor Units • Timber Roof joists • Timber Roof Deck • Stairs

Key Hazards Identified Temporary Instability Collapse construction loadings Falls from a height Handling major components Failure of lifting equipment Overhead services Use of hand tools – hand/arm vibration, eye injury Cuts & abrasions

Entire Site

Access stairs to be installed as soon as possible Methodology to be proposed by the Contractor and his temporary works designer for temporary instability Contractor to propose sequence of work for safe construction of steel frame and HCU’s

Items to be drawn to the attention of Contractor (s): Ensure correct fall arrest equipment is used. Construction loads due to any element do not exceed 1.5kN/m2.







Handling of materials, substances, components & prefabricated steel truss

• Coating • Paint • Sealers • Adhesives • Synthetic materials • Structural steel members up to 12 m

long Key Hazards Identified Manual handling & musculoskeletal injuries Cuts & abrasions Carcinogenic diseases Respiratory injury Skin diseases Falls from a height Falling objects Failure of lifting equipment Dust and fumes Environmental Work in Confined Spaces Environmental Failure of lifting equipment Collapse of structure during erection Clashes of Trades

Entire Site

Contractor to note handling of hazardous materials Contractor to note MSDS for adhesives & paints specified Where possible finishes at heights to be minimized Contractor to note weight of steel members to allow for safe installation

Items to be drawn to the attention of Contractor (s): Always refer to manufacturers/suppliers product data sheets & recommendation on correct use of product/service to ensure relevant safety measures are in place prior to use. Seek specialist advice on use & storage of all materials.







Cutting/welding of structural steelwork Bolting of structural steelwork Key Hazards Identified Fire/Explosion Dust Fumes/chemical or metal splash Radiation Noise/Vibration Falls from a height Falling objects Live Services

Entire Site

Contractor to note welding in a confined space i.e. toxic fumes Contractor to complete as much as possible of on site welding at ground level Design intent is that all welding is carried out off site before delivery

Items to be drawn to the attention of Contractor (s): Ensure adequate protection is provided to surrounding materials that are to remain in place whilst welding takes place.







Cladding/glazing

• Masonry up to 6 m high • Wall panels up to 8 m high • Windows at low level • Patent glazing at high level • Sheeting at roof level • Patent Roof lights

Key Hazards Identified Temporary Instability Construction loadings Falls from a height Falls through fragile materials Falling objects Fire Contact with overhead services Dust Use of power tools/HAVs Noise Manual Handling

Entire Site

Refer to Architect specifications on glazing and finishes Edge protection to be put in place as soon as possible Methodology to be proposed by the Contractor and his temporary works designer for temporary instability

Items to be drawn to the attention of Contractor (s): Safety netting to be used where necessary. Construction loads due to any element do not exceed 1.5kN/m2.







Installation of Engineering Services

• Foul & Surface Drainage • Access to chambers • Diversion of watermains

Key Hazards Identified Inadequate access Falls from a height Live services Manual handling & musculoskeletal injuries Entry into confined spaces Trips & falls Fire/explosion Dust/fumes/hazardous substances Collapse of excavation Weils Disease Cuts & Abrasions Unsupported exposed existing drainage lines Collapse of excavation Confined spaces Flooding

Entire Site

Contractor to note restricted access to chambers Contractor to note confined space entry to chambers Contractor to take account of underground cables/services and avoid work in close proximity where reasonably practicable Methodology to be proposed by the Contractor and his temporary works designer for temporary instability Contractor to provide safe excavations to HSA guidelines.

Items to be drawn to the attention of Contractor (s): Provision to be made for emergency shut down of gas/fuel/oil/electricity systems. Contractor to provide adequate pumping as required.






Design Stage: Location Decisions/Action Key Hazards Identified

Future cleaning/Maintenance Repair/Alteration Refurbishment Future Demolition Risks Falls from a height Falls through fragile materials Live services Manual handling Hazardous materials/substances Uncontrolled collapse Fire Electric shock Crushing

Entire Site

Engineer to be consulted prior to any proposed alterations to the structure Refer to Architect’s recommendations on access & cleaning of windows

Items to be drawn to the attention of Contractor (s): Any internal maintenance to be carried using appropriate equipment by competent & trained personnel. (Certified scaffolding, hoists, lifting equipment, etc)

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