Everything on construction,Roadworks,civil engineering,earthworks,Building works, engineering,manager, money, quality, software,health,safety,management,tender,method,Environment
Thursday, July 21, 2011
BROKE DOWN CONTRACTOR
Thursday, June 2, 2011
ROAD CONSTRUCTION
Component of Road Construction.
- Survey Works1a. Right of way or Boundary Survey
1b. Road centreline (CL) Survey.
1c. Road levelling survey ( Subgrade Level, Subbase Level, Roadbase Level,Finishing road level survey.
1d. As built Survey.
1e. Invert level for drain, Culvert
1f. Slope formation survey. - Site clearing.
- Stripping of top soil.
- Cutting and filling to form the subgrade level.
- Cutting to form the slope formation level.
- Laying of the Subbase with the approved material.
- Laying of the roadbase with approved aggregate.
- Spreading filler to top of roadbase.
- Sparying the prime coat on top of the roadbase.
- Laying of the Asphaltic Binder course.
- Laying of the Asphaltic Wearing Coarse.
- Construction of the drainage system, (Bench or berm drain,Toe Drain, Roadside drain)
- Piling works to drain, Culvert or bridge.
- Selection of material
- Compaction test.
- CBR test
- Makintosh probe testing
- Marshall test
- Cube test for concrete.
Sunday, May 1, 2011
Sunday, April 24, 2011
PIPE LAYING WORKS
General sequence of Water Main Pipe laying works.
- Site survey and setting out.
- Site clearing.
- Earthwork and trenching
- Pipe laying and Jointing works
- Piling to Man hole/ service hall/valve chamber
- Piling to anchor Block/thrust block
- Construction of man hole /chamber/bridge/Thrust block
- Testing
- Rectification of pipe ( if any)
- Testing and commissioning
- Back filling to Pipe trench
- Site tidying prior to handing over for completion
- Handing over for completion.
- Pressure test.
- Leakage test
- Welding test ( in the case of mild steel pipe is in use)
Tuesday, March 29, 2011
METHOD STATEMENT FOR EARTH WORK
- DOZER
- EXCAVATOR
- ROLLER
- DUMPING TRUCK
- SHOVEL
- SURVEY EQUIPMENT.
- Appointment of license Surveyor.
- Proceed with boundary survey and setting out.
- Verification by the S.O or S.O.Rs’ on the survey done by license surveyor.
- Upon completion of 1st KM of the boundary survey , the site clearing activities will proceed.
- Mobilisation of the Machinery(s) and equipment(s).
- Upon the completion of 1st KM boundary survey by the Licence surveyor, the site clearing shall start.
- All clearing shall been done with in the site boundary.
- Prior to clearing at any chainage of the road, Construction Manager or contractor rep. shall identify if there is any existing crops or structure within the area that require the attention of S.O. / S.O.Rs’. If there is any, Contractor Reps’ shall inform the S.O / S.O.Rs’ for verification. Photo of evidence shall be properly taken and area affected shall be define clearly.
- No Site clearing shall proceed at the affected chainage unless officially directed by the S.O.
- All debris from the clearing activities shall be properly dispose within then project site. If there is any debris need to be dispose beyond the site boundary, contractor shall abide to the local authorities rules and regulations.
- No debris Shall being dump within the filling area designated for permanent road.
- No burning shall be allow as a method of disposing all the debris.
- The Construction Manager or Contractors’ Rep. shall notify the S.O / S.O.Rs’ on the location of the dumping site as to suite the site condition.
- Cutting activities shall be done as shown in the construction drawings.
- Prior to cut and fill activities, all top soil shall be scrub and stock pile for later usage(if necessary) at the designated stock yard area which will be jointly identify at site by construction Manager / Contractor reps. and S.O / S.O.Rs’.
- Prior to cutting, the soil sample shall be tested for their suitability as fill material for the fill area. If the material are suitable, it shall be stock pile at the designated area which will be identify at site by the Construction Manager in the event that the filling activities have not yet proceed or otherwise.
- All the unsuitable material from the cutting area shall be dispose according within the site boundary.
- Temporary access for existing traffic shall be provided as and when needed.
- In the event that the temporary access are provided, there shall be enough detour signboard, AWAS sign, CONSTRUCTION IN PROGRESS sign and any others safety precaution signboard shall be erected to prevent any danger to the user.
- During working hours traffic officer (s) shall be assigned to control the flow of traffic at the affected area.
- Temporary drainage shall be provided along the construction site (if necessary) to drain-out the surface water.
- All temporary drain shall be discharge to the nearest stream / river / nearby drain. All discharge outlet shall be provided with silt trap before it being channel to the stream / river / nearby drain.
- Joint Inspection shall be conducted to verify the work done.
- Prior to filling activities or embankment activities, all the material that is going to be use as filling or embankment material shall be tested for the suitability. Marking peg for the purpose of filling or embankment layer thickness shall be established.
- After setting out of the fill or embankment area, the filling or embankment activities than shall started. The filling activities shall be done in layer. Each layer shall be properly compacted and tested before subsequence layer is lay.
- The process shall be repeat until it reach the proposed finish platform level as per construction drawings.
- All filling shall confirm to the approved construction drawings.
Sunday, October 4, 2009
COMMON TENDER ESTIMATION MISTAKE
Common Tender Estimation Mistake by Contractor.
Tender estimation is a very important area for a contractor in order to secure a contract. Their estimation must be very competitive to ensure that they will win in their bidding. However the common scenarios that repetitively happen among the tenderer are always as the following.
- The cheaper the construction cost, the higher their chances to secure a contract.
- Assumption always being done without visiting the actual site, thus they will not be able to provide a cost that is as accurate as needed to suite the site condition.
- Most of the time the contractor always by pass the standard condition of contract and also the special condition of contract which normally being include inside the tender document. Thus, as the result, they will only estimate base on what is inside the bill of quantity and the tender drawing. Usually inside the bill of quantity, there is an item listed as "other necessary work that deem to be necessary to complete the work ". This is where the special condition of contract, standard condition of contract, standard specification and special specification requirement should not being assume.
All the illustration and scenarios above are not the only common mistake done in preparing the cost estimation for a tender but there are many other such as fail to know the market price, calculation error or even for the sake to penetrate the market. Hence in preparing the tender pricing, contractors need to look into all area that will affect the construction work.
Contractors, Good luck and best wishes for you.
Wednesday, September 9, 2009
Construction Management for Contractor : Pre-tender Stage
Type of tender: Conventional, Design and build or invited tender.
Size or value of project .(Value of project most of the time is confidential by the party who call for tender .In Malaysia scenario the value of project will determine the category of contractor that can participate in the tender.
Amount of information that needs to be disclosing by the tenderers.
financial background
current project
previous experience
registration as required under the condition of prequalification
Plant, machineries or equipment of the contractor
Professional (qualified technical and administration) staff of the contractor.
Design team to do the design for them.
Professional Architect
Professional Civil Engineer
Professional Structure Engineer
Professional Project Manager Consultant
Professional Mechanical Engineer
Professional Electrical Engineer and
Professional Quantity Surveyor
Decision to participate in tender
Purchase of tender document
Pre tender meeting
Construction method
Cost Estimate stage
Pretender work program
Decision on overall tender pricing to be submitted and
Submission of the tender document.
Monday, September 7, 2009
Top reason why a project fail
Reason Why a Project Fail
In everyday life there are a lot of changes that always take place. The change have become more and more significant when there is monetary value involve. This have been a big challenge to anybody and it always the case that wether we want to face it or run away from it. When oneself decide to do away with the changes and run away from the challenges, we will never going to improve or move forward but instead of being successful we are already doom before we go to the battle field. In Construction Industry the same principal is applicable.
In managing a construction project, client, consultant and contractor, all of them will never run away from facing the unique of the challenges. They always try to find a way to solve the issue. For the new comer in this industry, there is no project that is going to be the same with the other. Each of them will come with a unique problem due to the nature of this field, that is, we are dealing with human and nature which is unpredictable. Therefore we must be ready to face the challenge.
The worst nightmare for client, Consultant and Contractor and they always try to avoid is project failure. Before we go further into this topic, let us define what "Project Failure"is.
Under this scope of discussion, "Project", simply mean a construction work in whole and "Project Failure " mean construction that was done or completed or even being call off because of it does not meet the real target or purpose of it or due to the budget constrain either on the contractor side or client side.
From contractor prospective, project failure is a construction project that does not bring in positive income or profit but only losing more money and tarnish contractor reputation. The same idea goes with consultant. However for the owner or client or stakeholder, project failure means that the project which has been completed or not completed and handed over to them is a project that does not serve the correct purpose or functionality. It only becomes a waste of time and money.
With the simple definition of "project failure", now we are ready to go and dig deep inside what the root cause is of or the reason why a project fail.
The main root cause of this is failure to plan. What is the significant of planing with project failure? Project planing not just about doing the estimate budget and estimate of time required to complete a project, but it allow the owner of the project to see the following;
- what is the purpose of the project,
- The scope of work of the project,
- What are the degree of cost that will involve,
- What are the resources they need in order to make the project a successful project,
- The duration needed to complete the whole project,
- What are the rule and regulation they have to fulfil,
- How they can reduce the project cost without jeopardise the quality of work, and
- What are the risk they have to take and how to mitigate it and last but not least
- What is the return they will get if they invest in this project?
Even with all the listed above there is still risk that nobody can predict before the event take place. The risk that I mentioned here is risk of uncertainty that ranging from global economic to the labour of workforce issue.
Sunday, September 6, 2009
TOP VITAL STEP IN SUCCESSFUL CONSTRUCTION (PART 3): WORK PORGRAM
In this column we can insert as when we want a task to start which is to be more accurate the date of the task to start. This column also being auto calculate by Microsoft project it self if the task is depend on the other task that need to be completed first before the next task can start. For example; refer to item 3 and 4 under Column ID.
Wednesday, September 2, 2009
Project management Software
Friday, August 21, 2009
Monday, August 10, 2009
Project Management : Earned Value and Microsoft Project#links
Project Management Blog: Earned Value and Microsoft Project#links
Project Management
The project management is a work that is not on paper only, it can be a trap to oneself if it is going to be done for the sake of documentation wise. It is a very important essence in construction. There are many related article that can be read to know better in this Area of project management.
Tuesday, August 4, 2009
TOP VITAL STEP IN SUCCESFULL CONSTRUCTION ( Part 1 )
VITAL STEPS IN SUCCESSFUL CONSTRUCTION PROJECTS (PART 1)
Why Contractors always being hunted whether can or cannot they successfully completed a construction project? There is one reason why they always being hunted by the issue.
First of all, regardless whether it new contractor or experienced contractor, the common mistake that they repeatedly do is failure to properly plan. The question is why? The number one issue is usually contractors are so obsessive to have as much job as they can. It is because in construction business, generally the more jobs the contractor has, the more income it mean to them. Hence, when such logical was to be taken for granted it often hidden other vital item from the contractor to make proper planning.
Let us elaborate more on the logical of the statement "More jobs the contractor have means more income to them". The statement is true in the sense that each and every project a contractor can secure, there had been estimation on how much the profit the will make. However estimation on the profit alone does not mean that a construction project will be successfully completed as stipulated in the contract agreement.
That is where Construction or Project Planning taken place.
Bellow are few steps that contractor need to be consider before they bid for a project.
- The contractor current work Load,
- Available cash flow or financial status,
- Available plant, machinery and equipment,
- Available competent staff,
- Knowledge on site condition prior to participating in a particular tender.
All though, all the five (5) listed factor is merely at the finger tips of the contractor knowledge but it always being neglected when there are to obsessive to win a tender.
The next step in construction or project planning that becomes the heart of Construction is Work Program.
What is work program? In brief, a work program is a list of task or job that needs to be done in order to successfully complete a construction. In a work program, normally it will show the information as when to start and to finish. It also carried out the information of dependency between tasks to task. On the resources part it will show what and how many manpower, equipment, plant and machinery needed for a particular task to be successfully completed as required. With a work program, a contractor will be able to see how much the construction cost (for Labors, Equipments, Machinery and Plants) he has to pay for.
For all construction related contractor, Engineers, Architect and any construction personnel, the information above is merely a guide from my own experienced. It does not intend to mislead anyone but if it does, I do apologies.
Tuesday, July 28, 2009
WHAT IS CONSTRUCTION ?
wanted to jump in this boat? be prepared for all posibilities.