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The project consists of providing design and construction management services for the development of a Pedestrian Bridge over the Nepean River. The purpose of the project is to provide local community residents and visitors to the area with an easy access over to either side of the River banks. The bridge is to be built as an incentive of the Local Government Area (LGA) of Penrith. The program has been developed to beautify the surroundings, whilst complying with the councils' vision of attending the needs of the natural reserves. The river flows in an unpopulated water catchment area into the Nepean Dam which supplies water for the Sydney region. The proposed bridge crossing is required at a section of the river that spans between 90 - 100 metres.
Rational of Design
A Steel-Truss design was set for the construction of the bridge. This was due to the councils thorough research which indicated that this bridge system would be the most appropriate, given the environmental circumstances for the project. This included the average span of the Nepean River and its soil/load conditions. Research also concluded that this design would adequately support the load of the expected purpose and its current location. Each area meets and complies with the councils guidelines.
Penrith City Council has requested proposals from qualified design and construction management firms. They have been asked to provide professional services for the conceptual study, design, coordination and preparation of the relevant contract documentations for the installation of the proposed bridge over the Nepean River. The bridge is to span across the river over a distance of 100 metres and is to be used by pedestrians to provide them with the means to cross from one side of the river to the other.
The main problem that our project is aiming to solve is of both pedestrian safety and ease of access to public areas within the recreational park. The only access across the Nepean River at the current location is via the M4 and The Great Western Highway's vehicular bridges. Between the two bridges is a gap which stretches an estimate of 3 kilometres without any access across the river. This forces pedestrians to cross the river using crossings with a high traffic volume. This can be dangerous for pedestrians especially those crossing with young children. Between these two current bridges there is Regatta Park and River Road Reserve which are both popular recreation areas.
We propose that a pedestrian bridge will be constructed between the M4 and The Great Western Highway. The bridge will provide direct and safe access for pedestrians to and from Regatta Park and River Road reserve from the opposite side of the river. We estimate that an average of 40-50 people will use the bridge each day.
Our research indicated that the most suitable design of bridge for our project would be a steel truss bridge. This style can accommodate spans of up to 150 metres; therefore, as our bridge has a span of 100m it was the best choice for the location and use. Other alternative options included beam, cantilever and suspension bridges. A crescent style design provides the bridge with aesthetic appeal.
Weathering steel was used in the design for the bridge because it gives high strength and durability along with a relatively low weight and easy erection. The steel must be galvanised to increase the life of the bridge by preventing corrosion. A number of materials could have been used for the decking including asphalt, concrete and timber. Yellow Pine timber was chosen as it is relatively cheap and aesthetically appealing.
Specification of bridge
These specifications are for a fully engineered clear span bridge of welded steel construction and shall be regarded as minimum standards for design and construction. The Engineer's decision shall be final. All suppliers will be rejected if the engineer decides that the contractor does not meet qualifying criteria. The bridge supplier shall be fully certified by all the relevant authorities to produce fabricated structural.
The bridge is a crescent series style design of steel truss bridge.
The total span from support to support will be 100 metres.
The inside clear width of the bridge shall be 2.5 metres.
Other Bridge Dimensions:
Horizontal safety rails shall be placed on the structure up to a minimum height of 1.25 metres above deck surface. Rails shall be placed so that they would prevent a 4 inch sphere from passing through the truss.
The bridge shall have a vertical camber to offset dead load and appear to be flat.
Uniform Live Load:
The bridge shall be designed for an evenly distributed live load of 4.1 kN per square metre of deck.
The bridge shall be designed with a minimum wind load of 1.5 kN per square metre on the full vertical area of the bridge.
The vertical deflection of the truss due to pedestrian live load shall not exceed L/500. For pedestrian comfort, the minimum live load used for the deflection check shall be a minimum of 600 pounds per lineal foot of the bridge. The horizontal deflection due to lateral wind load shall not exceed L/500 of the span length.
Stay-in-place galvanized metal form deck shall be used and shall be a minimum of 22 gage. Metal form deck shall not be considered as acting as composite reinforcing. Metal form deck shall be secured to the support members with fasteners or weld. Metal form deck panels shall be of a length to span a minimum of two bays of the truss supports. Metal form deck shall be designed for a construction live load of either 0.95 kN per square metre. Dead load deflection due to normal weight wet concrete shall be limited to L/180 or 3/4". Field splices shall be bolted with High Strength bolts.
The design of the bridge shall be in accordance with the Australian Bridge Design Code.
- All structural members shall be made of weathering steel and have a minimum thickness of at least 3/16 of an inch.
- Steel material shall be corrosion resistant high-strength low alloy material with a minimum corrosion index of 5.8. All members of the truss and deck system shall be fabricated from square/rectangular hollow structural sections; wide flange may be used for floor beams. Open ends of posts and floor beams shall be capped.
- Wood decking shall be No. 1 grade Southern Yellow Pine. Wood decking shall be treated with a sufficient amount of preservative. The wood deck shall be designed for a minimum of 5 kN per square metre local loading condition. Floor planks shall be attached with at least two plated fasteners where planks cross-supporting members.
- Field splices shall be bolted with High Strength bolts. Welding materials shall be in strict accordance with the Australian Welding Society (AWS) Structural welding code. Filler metal will match characteristics of the base material. Welders will be certified in accordance with AWS. All welds are to be 100% visually inspected.
Railings and Accessories
All railings shall have a smooth inside surface with no protrusions or depressions. All ends of angles and tubes shall be closed and ground smooth. Railings shall be a minimum height of 1.25 metres above the bridge deck.
Continuous rails shall be located on the inside of the trusses.
A 5 inch steel channel shall be located 50mm above the floor deck.
Vertical Picket safety rails shall be placed on the structure up to a minimum height of 1.25 metres above deck surface. Rails shall be placed so that they would prevent a 4 inch sphere from passing through the truss. The rails are to be placed on the inside of the truss. Vertical Pickets shall be the standard ½" Pickets welded to less than a 4" opening. The panels are designed with ¼" and 3/8" plates.
Delivery and Erection
Delivery is made to a location nearest to the site, which is easily accessible to normal, over the road tractor trailer equipment. All trucks delivering bridge materials will need to be unloaded at the time of arrival. Erection of the bridge structure is to be done by a certified erector.
- Large Building Space
- Client has substantial financial power
- Committed staff with skills/knowledge to get the job done
- Plenty of building space
- Workforce readily available
- Working around an existing natural reserve.
- Developing in an area that will create more traffic around natural reserve.
- Getting large building equipment and machinery on site without impacting surroundings.
- Great opportunity for a major project
- Making new contacts in the commercial retail industry
- Creates goodwill for the firm
- Environmental issues
- Price wars from other project management firms
- Competitors offering cheaper alternatives
- Building site vandalism
- Failure to deliver project on time may hinder our firms reputation
Soil classification may cause problems
Large Building space: The space around the Nepean River in between the M4 Motorway and The Great Western Highway is approximately 3kms in length allowing for greater space for site establishment and operation.
Client has substantial Financial Power: As the client that is proposing the construction is the LGA of Penrith City council, whom maintains government backing of the development for the betterment of the Greater Western Region, it has virtually unlimited monetary resources.
Committed staff with skills/knowledge to get the job done: Our firm has staff with over 30 years of experience and expertise within the civil construction industry and public works, we specialise in delivering projects on time and within budget. Allowing us with the advantage of the knowledge and resources required to successfully undertake such a project.
Plenty of building space: The site immediate to where the bridge is to be constructed is free from any forms of hindrances that may affect construction as there are no adjacent buildings that can be affected during or after construction by the development of this bridge.
Workforce readily available: Our workforce and contractors are readily available to commence construction as soon as the green light to begin is given.
Working around an existing natural reserve: As the surrounding area is a natural reserve extra precaution and time must be taken into account in maintaining the surroundings and ensuring that no damage occurs to the waterways and nature surrounds.
Developing in an area that will create more traffic around natural reserve: Traffic will need to be maintained much more rigorously around the site, as two major motor arteries surround the construction zone. A comprehensive traffic control plan will need to be developed to maintain traffic flow.
Getting large building equipment and machinery on site without impacting surroundings: As the project is to be completed in an environmentally sensitive area, comprehensive site planning will need to be undertaken to avoid any long lasting negative impacts on the natural surrounds.
Great opportunity for a major project: A project such as this will allow our firm to once again commit to the local community and provide much needed local infrastructure, allowing greater awareness within the public of our firm's ability to undertake such a project and complete it diligently.
Making new contacts in the commercial retail industry: Business opportunities and recognition is abundant on such a government project allowing for immense positive media attention, helping the firm to gain much more deserved publicity as one of the best construction management and engineering firms in the business.
Creates goodwill for the firm: Once the project is completed; goodwill will be created towards the firm, allowing other local government councils to recognise the firm's ability and potential for completing projects which are environmentally sustainable; and at a high satisfactory level for all stakeholders.
Weather: During Construction weather conditions may impact the surrounds or cause delays in construction and project delivery.
Environmental issues: Considerable care must be taken not to negatively impact the local surrounds. As a consequence the reputation of the firm may be hindered and heavy fines are also applicable.
Price wars from other project management firms: Other civil construction firms may apply for tender and create a price war for project delivery.
Competitors offering cheaper alternatives: Other firms may offer cheaper delivery to the client, being a government project and through the public eye, cheaper may be seen as the way to go.
Building site vandalism: Due to the openness of the site, it has a higher chance of being vandalised by natural or an unnatural source such has floodwater.
Failure to deliver project on time may hinder our firm's reputation: The failure to deliver the project on time will greatly affect the firm's reputation of being one that prides itself on on-time project delivery with minimal delay.
Soil classification may cause problems: The local soil may cause problems being surrounded by wet bushlands and a waterway. Extensive testing and drilling samples may be variable around the site.
Price per unit
Hot dipped galvanizes weathering structural steel
Treated Southern Yellow Pine decking
Bolts, screws and fixtures
Galvanized steel handrails
Total cost of materials
Plant and Equipment
Rate per unit
Total cost of plant and equipment
Rate per unit
Total cost of labour
Rate per unit
Total other costs
Best Builders Construction Best Builders Construction Pty Limited GPO Box 2000 Sydney New South Wales 2000, Australia
Telephone: 02 999 9 00 00 Fax:02 9999 0001 Email: [email protected]
Steel Truss System Bridge - Tender Document
Best Builders Construction
Revised Total Lump Sum Tender Offer
Civil and Bulk Earthworks - Steel Truss Bridge Erection
We are pleased to advise the revised lump sum tender offer for the above project is as follows:
Civil and Bulk Eathworks ...................................................................................... $281,470
Steel Truss Bridge Erectionâ€¦................................................................................$315,200
Site amenities......................................................................................................... $3,840
Revised Total Lump Sum Tender Offer............................................................$ 600,510
The above figures exclude the Goods and Services Tax.
Please refer to the attached appendices for breakdown of the above prices, as well as a detailed document list upon which this offer is based.
Our revised lump sum tender offer is subject to the following qualifications.
1. All conditions and qualifications identified in the Best Builders Lump sum tender for the design & construction of the Steel Truss System Bridge over the Nepean River offer dated 01.01.2010 remain current and still apply, unless noted otherwise in this offer.
2. Any Nepean City Council generated variations to the scope of works encompassed in the BCA Lump Sum Tender for the Design and Construction of the Steel Truss Bridge over the Nepean River offer dated 01.01.2010 are excluded from this offer.
3. Geotechnical Investigation costs have been excluded from the tender price.
4. Engineers design fees are included within the tender price.
5. Site Preparation including general site clearing is included within the tender price.
6. Excavation to foundations and to level and fill site is included within the tender price.
7. Erection of formwork for the bridge foundations and columns is included within the tender price.
8. Pouring of concrete for foundations and columns is included within the tender price.
9. Erection of the steel truss system is included within the tender price.
10. Decking of bridge span, both the galvanized metal and southern yellow pine timber decking is included within the tender price.
11. Installation of railings and accessories including the vertical picket safety rails are included within the tender price.
12. General clean up including the removal of waste and excess materials as well as landscaping detail is included within the tender price.
13. Council, authority and utility fees and charges are excluded from this offer.
14. No allowance is included in our lump sum tender pruice for any conditions of approvals imposed by Local Authorities which require any works other than those identified in the Development Application drawings listed in this offer.
15. No allowance is made for legislative changes & final approval conditions from Statutory & Local Authorities.
16. This lump sum tender price remains fixed for twenty one (21) days.
17. All works on site are deemed to be performed during normal working hours.
18. This lump sum offer is subject to agreement of contractual conditions.
Should you have any queries or require further information, please do not hesitate contact the undersigned on 02 9999 0000.
Best Builders Construction Best Builders Construction Pty Limited GPO Box 2000 Sydney New South Wales 2000, Australia
Telephone: 02 999 9 00 00 Fax:02 9999 0001 Email: [email protected]
Nepean River Steel Truss System Bridge - Crescent Series Design
Construction Contract - Formal Instrument of Agreement
BB Constructions and Nepean City Council
This Steel truss system, crescent series design bridge will span 55 metres at a width of 2.5 metres, including horizontal safety rails at a height of 1.25 metres above the deck surface. All structural members shall be made of corrosion resistant weathering steel. Stay-in-place galvanized metal shall be used to form deck, the wood decking is to be constructed using No. 1 grade Southern Yellow Pine. The bridge shall be designed with a minimum wind load of 1.5 kN per square metre on the full vertical area of the bridge. The bridge shall be designed for an evenly distributed live load of 4.1 kN per square metre of deck.
2.General Scope of Works
- General site clearing
Excavate to level and fill site
- Excavate foundations
- Fill site where necessary
- Level site
- Erect formwork for bridge foundations and columns
Pour concrete for foundations and columns
- Pour concrete for bridge foundations and columns
Erect steel truss system
- All structural members shall be made of weathering steel and have a minimum thickness of at least 3/16 of an inch as well as being corrosion resistant high-strength low alloy material with a minimum corrosion index of 5.8.
Decking of bridge span
-Stay-in-place galvanized metal form deck shall be used and shall be a minimum of 22 gage.
- Wood decking shall be No. 1 grade Southern Yellow Pine. Wood decking shall be treated with a sufficient amount of preservative.
Installation of railings and accessories
-Vertical Picket safety rails shall be placed on the structure up to a minimum height of 1.25
General clean up
-Removal of all waste material
3. General Terms and Specifications
-The work is to be completed for a total of $ 600,510, Six hundred thousand five hundred and ten dollars.
Completion of Work under the Contract
-The contractor must execute the work under the contract in accordance with the contract.
Payment of Contract Sum
-The principal must pay the contractor the contract sum in accordance with the contract.
-The contractor acknowledges that:
(1)The principal enters into the contract as agent for the responsible entity; and
(2)It must not make any claim against the responsible entity or the trust under, arising out of, or in any way in connection with, the contract.
-Each party represents and warrants to the other party that:
(1)It has full power and authority to execute the contract and perform its obligations under the contract
(2)The contract has been duly executed by it; and
(3)The obligations undertaken by it and set out in the contract are valid and binding in accordance with the terms of the contract.
Execution by Attorney where this contract is executed by an attorney, that attorney, by execution, declares that it has no notice of recovation, termination or suspension of the power of attorney under which it executes the contract.
-Disputes are to be handled in a civil manner, without court consultation (if possible), each party is to act in an ethical manner and do everything possible by realistic means to avoid such disputes.
4. Payment Schedule
-The contractor is to be paid on a monthly basis in accordance with monthly progress and variations claims. At the end of the full period the contractor is to be paid the contract sum in full, including GST.
5. Agreement of Terms
BCA hereby confirm that the lump sum to carry out the agreed scope of works is $600,510, Including GST.
Signed ______________________________ Michael Brogan, BCA Constructions
Nepean City Council hereby agree to pay BCA constructions a sum of $10,000,000 to carry out the works set out in the contract. This offer is valid for 28 days as of 30.10.2010
Signed ______________________________ Adam Campbell, Nepean City Council
Technical risk management
There are several technical risks that must be managed for the project. All the design documentation must be complete and in order to avoid assumptions and discrepancies in the construction of the bridge. The specifications must be appropriate to the project in order for the project to be completed successfully and in accordance with the design details. A full site investigation is required so that the correct construction methods and designs can be implemented and to prevent the occurrence of technical failures such as soil failures. Sources and suppliers of all materials must be determined and their availability ensured with sufficient time to provide the required materials at the allocated time.
Financial risk management
The financial risks involved in the project include cost overruns from problems such as under-estimating costs, time delays, material wastage and unforeseeable problems. A risk management officer will be appointed to the project to create a risk management plan and monitor the performance of the project.
Environmental risk management
The impact to the local environment will be minimised for the project. The project has multiple risks to the environment such as contamination of the river water and dust, noise and air pollution. An environmental management plan has been created and will be in operation for the entire project. This will provide guidelines for protective barriers and environmentally safe work practices.
OH&S Management Plan
Pedestrian Bridge Over Nepean River
Table of contents
TITLE PAGE 4
Task Done By Each Person 5
Rational of Design 6
Literature review 7
Project Problem 7
The Solution 8
The Design 8
Specification of bridge 8
Bridge Dimensions 9
Bridge style: 9
Bridge Span: 9
Bridge Width: 9
Other Bridge Dimensions: 9
Bridge Camber: 9
Uniform Live Load: 10
Wind Load: 10
Floor Decking: 10
Design Criteria: 11
Railings and Accessories 12
Safety Rails: 12
Toe Plate: 12
Rail Type: 12
Delivery and Erection 13
Builders Perspective 13
Plant and Equipment 19
Tender document 20
Construction Contract 23
Risk management 26
Technical risk management 26
Financial risk management 27
Environmental risk management 27
OHHYPERLINK "#__RefHeading__164334_1526711549"&HYPERLINK "#__RefHeading__164334_1526711549"S Management Plan 27
1.Contract Details 30
2.Safety Policy 31
4.Scope and Construction Activity Details 33
5.Safe Work Method Statements 33
6.Hazard HYPERLINK "#__RefHeading__164346_1526711549"&HYPERLINK "#__RefHeading__164346_1526711549" Risk control register 34
7.First Aid and Injury Management 35
8.Emergency Procedures 35
9.Public Protection 36
10.Site Rules 37
11.Incident reporting and investigation 38
12.Induction Requirements 39
13.Chemical Management 39
14.Safety Monitoring 40
15.Sign Off 40
Appendix 1 - Schedule 43
Appendix 2 - Architectural Drawings 44
Appendix 3 - Minute meetings 45
Best Builders Pty Ltd
457 Johnsten Rd
Phone: - 02 96587459
Contractor Safety representative:
Location of works:
Over Nepean River
Timing of works (approximate):
An important aspect of any development is that of safety of site personal during the construction phases of a project. Not only is the providing of a safe work environment required by law through organisations such as WorkCover and its code of practice with the Australian Safety Standards, it is also the responsibility of each personal to be aware of the safety of themselves and to ensure that their peers abide by the rules, regulations, safety guidelines and protective measures outlined below to create safe working atmosphere, and to help minimise any injury or work place accidents on site.
To facilitate with the project of building a bridge over the Nepean River in Penrith, Management has created a Safety Management Plan (SMP) that will address the Occupational Health And Safety (OH&S) issues throughout the project.
Site Specific Safety Rules are to be strictly adhered to. If it is found that site personal(s) are not following the following rules effectively, harsh penalties such as suspension or dismals will be enforced.
The Site Safety Management Plan for this particular site has been produced and will ensure that site safety rules are displayed on various locations of the site. The plan details all safety instructions. All site personal is to be inducted on site on initial commencement of work on the site, it should also be noted that if there are any changes made to the site, all personal shall be revised on the new hazard areas. The current site safety rules also states that any short-term visitors must be escorted at all times whilst on site. It is important to note that only workers whom have completed a general safety induction course and hold proof of their satisfactory completion (VIA a green/white card) will be able to work on site.
The site safety officer for the site is: Sunny Lal and a site safety committee will be established.
Scope and Construction Activity Details
List Major activities
Handling demolished material
Manual handling of equipment/ materials
Safe Work Method Statements
Management, through the consultation with WorkCover has provided Safe work method statements (SWMS) for all the work activities that have a high risk rating. These should be read followed and signed prior to the commencement of such work.
Hazard & Risk control register
First Aid and Injury Management
All incidents accidents including near miss that occur on the work site must be reported to the site supervisor.
The consumption of alcohol or illicit drugs must not be consumed on the premises or before or during work hours.
Any persons affected by alcohol or drugs will be asked to leave the worksite and may be charged and prosecuted under work safety regulations and endangerment to self or others.
All personnel are required to meet at the emergency meeting point at the time of an emergency, site safety officer is to be informed immediately and the appropriate emergency services are to be contacted.
All hazards to the public are to be identified and the best method for eliminating or controlling the hazards are to be adhered to. Evaluation of the risk or harm that may be caused is to be calculated before commencement of work and physical safeguards to avoid or reduce injury and prevent property damage is to be implemented. All site works are to contain barriers around potential hazards, warning signs and cautionary lighting is to be displayed where necessary. Additional public safety protection methods to be followed are:
Traffic controllers are to redirect traffic and people.
A temporary by-pass is to be created for traffic and people.
Level wheelchair and pedestrian is to be provided for access around the area
Additional lighting will be used during night works and static sight
A sufficient clearway is to be maintained around the perimeter for extra public safety.
The entire construction site is to be enclosed via fencing
Spotters are to be used when working with plant and equipment
Site Safety Rules:
Site Safety rules must be displayed on site.
All site personal must be inducted to the site on initial commencement and following any changes to the site.
Short-term visitors must be escorted at all times while on site.
Only staff with completed general safety inductions and are carrying their green card may be allowed to work on-site.
Safe work method statements (SWMS) must be prepared for work activities that have a high risk rating.
All staff must adhere to general housekeeping to ensure access to fire extinguishers, eyewash stations, emergency showers first aid kits and emergency exits are clear at all times.
Trip hazards and travel path obstacles must be kept clear.
Personal Protection Equipment:
Personal protective equipment (PPE) must be worn at all times on site. And will be strictly enforced.
PPE required on site Include:
Eye protection - Safety goggles to avoid eye damage due to flying objects or debris.
Hand protection - safety gloves to protect against cuts, abrasions, splinters or chemical exposures.
Head Protection - Hard Hats - To protect against falling objects, accidental head contact with electrical hazards.
Hearing Protection - ear muffs must be worn to protect against high noise damage to ears.
High visibility clothing - Fluorescent yellow safety clothing is to be worn by all staff to allow for high visibility by all machine operators.
Safety footwear - Approved safety footwear is required by all site personal, to help reduce the risk of injury to foot by falling objects.
Sun protection - protection against the sun is required when working outdoors, safety gear such as hats, long sleeved shirts and UV protection cream must be used.
Incident reporting and investigation
All incidents are to be reported to the on-site safety manager. All incidents will be monitored and investigated accordingly through work cover and the firms OH&S policies.
Inductions for contractors are to be completed in accordance with the Contractor Safety Induction process.
ALL WORKERS MUST HAVE UNDERGONE THE OHS CONSTRUCTION SAFETY INDUCTION (BLUE CARD) BEFORE WORKING ONSITE
It is important to take care with the handling, storage, packaging and delivery of goods onsite especially due to its un-level nature.
Storage of construction Materials and substances must be stored separately on level, firm and clear ground. Bulk materials such as cold mix, aggregates, sands and road base should be stored separately to avoid contamination.
Materials under threat to degradation must be stored under shelter and away from vehicle or pedestrian access.
Material Safety Data Sheets (MSDS) should be strictly followed on all locations on site.
Products must be periodically inspected for shelf life expiry and if any products are expired it must not be used and disposed of appropriately.
All safety signs and instructions on site must be strictly adhered to.
Any horse behaviour or practical jokes on site that endanger personal safety will not be tolerated.
Safety inspector will be on site to monitor all safety compliance.
Safety Management plan approved by:
Project Manager: Adrian Chaghoury Sign: ______________
Safety Manager: Sunny Lal Sign ______________
Site Manager: Dane Lollback Sign _______________
Head OHS Com: Mike Brogan Sign _______________
The design and construction of the pedestrian bridge providing access across the Nepean River between the M4 and Great Western Highway bridges will give a solution to the problem of safe and easy access to Regatta Park and River road Reserve recreational areas. The most suitable designs and materials have been selected for the project to give the desired outcome. All the project risks will be managed and the damage to the environment minimized. Overall we estimate based on our evaluation the project will cost a total $600 510 and will take approximately 14 months to construct.
We recommend that all alternatives should be analysed before deciding on the best location, design, and construction methods. Research on ways to ensure that environmental impacts are minimised should be in-depth as the project is crossing a major waterway.