Method Statement -Rubble Pitching

1.0 OBJECTIVE

This Work Method Statement is to outline the sequence of activities, method and resources needed for the operation of rubble pitching’s construction.

 

2.0 SCOPE

This method statement shall be used for failure slope protection, abutment and river protection for the (your project name). Details of the procedures contained herein may be modified based upon actual ground condition and site requirements.

 

3.0 REFERENCES

Ø  Construction Drawings

Ø  Approved Shop Drawings

Ø  Project Specifications

 

4.0 RESPONSIBILITIES

Ø  Safety Officer/Supervisor

Ø  Site Manager

Ø  Project Engineer

Ø  Site Supervisor

 

5.0 MATERIALS

Ø  Stone

Ø  75mm Dia. UPVC Pipe

Ø  Geotextile

Ø  Graded Granular

Ø  Ordinary Portland Cement

Ø  Fine Aggregate

 

6.0 HANDLING AND STORAGE OF MATERIALS

Handling             - Transport of materials shall be carried out by lorry or other suitable machinery.

Storage               - Covered and raised above floor level.

 

7.0 PLANT, MACHINERY AND EQUIPMENT

Ø  Concrete Mixer

Ø  Hand Tools

 

 

8.0 PREPARATORY WORKS

         i.            Obtained relevant approved construction drawing from consultant/consultant’s representative.

        ii.            Set out the location, center lines and limits of work.

      iii.            Set out the toe peg and finish level for the work.

      iv.            Set temporary earth drain and outlet structure before work starts (if required).

 

9.0 WORK METHODOLOGY

         i.            Moisten the work surface with clean water a little in advance of construction.

       ii.            Lay the cement mortar about 50mm thickness.

      iii.            Construction of rubble pitching shall commence at the lowest part of each structure or section of a structure and continue progressively upward.

      iv.            The pitching shall be laid in horizontal courses with headers at intervals or in random fashion depending on the stone available.

       v.            Place the stones firmly set by hand into the mortar, densely packed against adjacent stones and built up to form a stone structure of uniform thickness as shown in the drawing.

      vi.            For abutment and river protection at bridge area, one layer of geotextile type A will be laid as per drawing.

    vii.            To fill the mortar with hand-placed space between the stones from bottom to top.

   viii.            Clean the surface to expose the individual stone faces.

      ix.            To provide the weep holes as shown in the drawing.

       x.            To finish the pitching with a horizontal course at the level shown on the drawing.

 

10.0 TRAFFIC MANAGEMENT AND MONITORING

10.1 Maintenance of existing roads, footpaths and service drains, etc.

The construction team shall maintain all existing site excess, roads, footpath, service drain, etc. and reinstate any damage caused by any reason whatsoever during the progress of the works.

It will be the Safety Officer/Supervisor’s responsibility to ensure that ingress and egress to the site are kept free from obstruction brought about by the work on this site and in no way shall cause hindrance to traffic or ancillary works either by his own vehicles or by his work people, material, etc.

 

11.0 SAFETY PROGRAMME

11.1    Temporary Works and Public Safety

The Safety Officer/Supervisor shall be responsible for submission of plans and drawings to the relevant Authorities for the construction of all the necessary temporary drains and desilting pits, safety nettings for the works.

The Safety Officer/Supervisor shall provide adequate signboards at all strategic positions warning the public to keep away from the work site and erect temporary fencing and barriers where necessary around the site to prevent unauthorized trespassing during works.

 

12.0 ENVIRONMENTAL PROGRAMME

All works should be carried out in accordance with best practice environmental management as defined in the EMP.

12.1    Site Access.

The access as well as the portion of public road and walkway connected with it shall be kept clean and safe at all times.

12.2    Temporary Work.

Existing drain shall be identified by contractor together with the flow of drain until discharge point in order to make use of it during repairing work. Silt trap shall be provided before any discharge of surface water within site towards existing drain. This work should be completed prior to the commencement of any activities.

Temporary earth drain shall be constructed along clearing area to retain the surface water from dismissal directly towards existing drain. Desilting work shall be carried out regularly and the existing drain will be maintained during work.

As the slope area will not be disturbed, the existing turf or grown grass shall be remain and only manually cut the grown trees without uprooting it. Plastic sheet /canvas will be provided on site on standby basis in order to be use as slope protection if necessary.

Any effluent discharges from the site must comply with the Third Schedule of the Environmental Quality (Sewage and Industrial Effluents) Regulation 1979.

12.3       Waste Management.

Any construction wastes, solid wastes and domestic wastes other than schedule wastes must be disposed-off at the approved disposal site. On site compositing for biodegradable waste is allowable but land filling and open burning activities for the solid waste are strictly prohibited.

Method Statement -Road Marking and Road Furniture

1.0 OBJECTIVE

This Work Method Statement is to outline by which road signage and road furniture works are carried out.

 

2.0 SCOPE

This method statement shall apply in (your project name). The intention of this method statement is to give general guideline for the application of road marking and installation of road signage.

For road marking, this work shall consist of the supply of road marking material and its application to form continuous or intermittent lines, arrows, symbols or figures. The markings shall be white or yellow laid to the dimensions and at the locations shown on the drawings and as specified in project specification or as directed by the S.O. The work includes the supply of all labor, tools, equipment, materials, and warning and traffic guidance sign as necessary for the safe and efficient completion of the entire work.

 

3.0 REFERENCES

Ø  Construction Drawings

Ø  Approved Shop Drawings

Ø  Project Specifications

 

4.0 RESPONSIBILITIES

Ø  Safety Officer/Supervisor

Ø  Site Manager

Ø  Project Engineer

Ø  Site Supervisor

 

5.0 MATERIALS

Ø  Prefabricated traffic signage

Ø  Road marking materials (Thermoplastic Material and Road Marking Paint)

Ø  Cement

Ø  Sand

Ø  Aggregate

 

6.0 HANDLING AND STORAGE OF MATERIALS

Handling             - Transport of materials shall be carried out by lorry or other suitable machinery.

Storage               - Covered and raised above floor level.

 

7.0 PLANT, MACHINERY AND EQUIPMENT

Ø  1 ton Lorry

Ø  Road Marking Machine

 

 

8.0 PREPARATORY WORKS

Ø  Obtain approved infra structural drawings from the client / client’s representatives.

Ø  Prefabricated signage and furniture as per drawing.

Ø  Set out the level, position and alignment for installing signage and road marking.

 

9.0  WORK METHODOLOGY

9.1 Signage and Furniture

                            i.            Identify the correct signage for each location.

                          ii.            Excavate to construct footing, where necessary.

                         iii.            Install footing formwork and reinforcement, and then erect the signage / furniture post that to be cast in-situ.

                         iv.            Fix the signage board or furniture as per drawing.

                          v.            On completion of joint inspection, request client / client’s representative to sign on the Request for Work Inspection form and file as per Project Filing Index.

 

9.2 Road Marking

                            i.            Clean the road pavement where the marking to be painted. To only apply on a surface which it clean and dry.

                          ii.            Identify the type of marking and colour of paint to be painted.

                         iii.            Off-set from lines and set alignment for marking.

                         iv.            Measure the length and width of each marking and apply the paint accordingly.

                          v.            All markings shall be protected from traffic until they have dried sufficiently so that no pick-up by vehicle tyre will occur.

                         vi.            It shall not be laid over loose detritus, mud or extraneous matter or over old materials.

 

10.0 TRAFFIC MANAGEMENT AND MONITORING

10.1 Maintenance of existing roads, footpaths and service drains, etc.

The construction team shall maintain all existing site excess, roads, footpath, service drain, etc. and reinstate any damage caused by any reason whatsoever during the progress of the works.

It will be the Safety Officer/Supervisor’s responsibility to ensure that ingress and egress to the site are kept free from obstruction brought about by the work on this site and in no way shall cause hindrance to traffic or ancillary works either by his own vehicles or by his work people, material, etc.

 

11.0 SAFETY PROGRAMME

11.1    Temporary Works and Public Safety

The Safety Officer/Supervisor shall be responsible for submission of plans and drawings to the relevant Authorities for the construction of all the necessary temporary drains and desilting pits, safety nettings for the works.

The Safety Officer/Supervisor shall provide adequate signboards at all strategic positions warning the public to keep away from the work site and erect temporary fencing and barriers where necessary around the site to prevent unauthorized trespassing during works.

 

12.0 ENVIRONMENTAL PROGRAMME

All works should be carried out in accordance to best practice environmental management as defined in the EMP.

12.1    Site Access.

The access as well as the portion of public road and walkway connected with it shall be kept clean and safe at all times.

12.2    Temporary Work.

Existing drain shall be identified by contractor together with the flow of drain until discharge point in order to make use of it during repairing work. Silt trap shall be provided before any discharge of surface water within site towards existing drain. This work should be completed prior to the commencement of any activities.

Temporary earth drain shall be constructed along clearing area to retain the surface water from dismissal directly towards existing drain. Desilting work shall be carried out regularly and the existing drain will be maintained during work.

As the slope area will not be disturbed, the existing turf or grown grass shall be remain and only manually cut the grown trees without uprooting it. Plastic sheet /canvas will be provided on site on standby basis in order to be use as slope protection if necessary.

Any effluent discharges from the site must comply with the Third Schedule of the Environmental Quality (Sewage and Industrial Effluents) Regulation 1979.

 

12.3       Waste Management.

Any construction wastes, solid wastes and domestic wastes other than schedule wastes must be disposed-off at the approved disposal site. On site compositing for biodegradable waste is allowable but land filling and open burning activities for the solid waste are strictly prohibited.

Method Statement -Hydroseeding

1.0 OBJECTIVE

This Work Method Statement is to outline the sequence of activities, method and resources needed for the operation of hydroseeding works.

 

2.0 SCOPE

This method statement shall apply for hydroseeding works for (yor project name). Details of the procedures contained herein may be modified based upon actual ground condition and site requirements.

 

This works shall consist of slope surface preparation and hydroseeding work including supply of all necessary equipment, manpower and materials on location of slopes in cut and fill areas as shown in drawings or as directed by the S.O.

 

3.0 REFERENCES

Ø  Construction Drawings

Ø  Project Specifications

 

4.0 DEFINITIONS

       -Nil

 

5.0 RESPONSIBILITIES

Ø  Safety Officer/Supervisor

Ø  Site Manager

Ø  Project Engineer

Ø  Site Supervisor

 

6.0 MATERIALS

Material to be used is as follows :-

Ø  Paper mulch

Ø  Latex

Ø  Fertilizer – NPK 15:15:15

Ø  Grass seed – Urochloa Decumbens

 

7.0 HANDLING AND STORAGE OF MATERIALS

Handling - Transport of materials shall be carried out by lorry or other suitable machinery.

Storage – Covered and raised above floor level.

 

8.0 PLANT, MACHINERY AND EQUIPMENT

Ø  Lorry

Ø  Water tank

Ø  Spray pump machine

 

9.0 PREPARATORY WORK

9.1 Possession of site                                                                                     

Ø  To take photographs of the designated area.                                                                               

Ø  To arrange joint inspection between the contractor, consultant and client representative, in certain cases may involve.

 

9.2 Hydroseeding 

Ø  Hydroseeding shall be carried out as soon as practicable on slopes and other areas as shown in the drawings and/or directed by the S.O. 

Ø  Unless otherwise approved by the S.O., hydroseeding shall be carried out within 14 days after the slope is cut or filled.

Ø  The surface before hydroseeding shall be free of loose or soft materials.

Ø  Cut slope surface shall have some horizontal grooves (about 20mm deep) at about 200mm intervals.

Ø  Vertical grooves shall be avoided.

 

9.3 Signal Grass ( Brachiaria Decumbens / Urochloa Decumbens )

Ø  Signal grass is indigenous to Uganda and is currently being grown in many tropical to subtropical countries throughout the world. 

Ø  Many Brachiaria species including Brachiaria Decumbens have been placed by some authors in the Urochloa genus, so the taxon Urochloa Decumbens is often considered as the correct.

Ø  It forms a dense, high yielding sward which response very well to additional nitrogen.

Ø  It is a perennial grass with strong stoloniferous roots system and long trailing stems which will readily root down from their nodes.

Ø  Signal grass is highly recommended for slopes erosion control and is widely used along most of our Malaysian highway including the North South Highway.

Ø  Originally, Signal grass was mainly used in the wet, humid tropics but in recent years, is being grown over much wider climatic conditions.

 

9.4 Component of Hydroseeding

Ø  Lorry

Lorry with a 350 gallon capacity of water tank and others machineries for hydroseeding and watering purpose.

Ø  Labour

Each lorry has one (1) driver, one (1) assistant and 2 (two) workers to conduct the spraying of mixtures which has been premixed.

Ø  Raw Material

·         Paper mulch

Paper mulch provides a mat which follows the contour of the soil and keeps the seeds in moist condition for faster germination. Eventually, the mulch decomposes serving as humus which further improves soil condition.

·         Latex

·         Fertilizer (15%N, 15%P, 15%K)

·         Grass seed (Urochloa Decumbens – Signal grass)

 

9.5 Proportion of mixing

Ø  Paper mulch – 45kg

Ø  Latex – 20kg

Ø  Fertilizer – 20kg

Ø  Signal grass seed – 10kg

Ø  The mixture is measures based on the capacity of a 350 gallons of water tank.

Ø  The mixture can cover approximately 500m2 to 700m2.

                        

10.0 WORK METHODOLOGY

Ø  Grass seed and other raw material ( Paper mulch-45kg, Latex- 20kg, Fertilizer-20kg, Signal grass seed-10kg ) are measured and mixed with water in a tank (350 gallons). The various raw materials are then mixed in a tank for about fifteen (15) minutes to ensure a uniform mixture. This mixture is now in a semi-liquid state or slurry.

Ø  The team leader control the outlet of the flexible hose during the spraying of the mixtures on the slopes. One of the assistants shall be stationed at the pimp in order to monitor or control the pressure of pump, while the other two (2) workers shall be responsible for laying of flexible hose during the spraying process.

Ø  The spraying should be done in the uniform pattern in order to ensure even coverage of slurry of soil surfaces.

Ø  Hydroseeding should never be applied during, before or immediately following rainfall as well as during high wind.

Ø  Machines and tools should be flushed and cleaned with water immediately after use.

Ø  Under the normal soil conditions, the germination would take about 7 days to 9 days.

Ø  For the hydroseeding on cutting area and when the grasses grow about 2 inch – 3 inch, fertilizer in liquid form is spray on the hydroseeded area in order to ensure speedy growth and uniform germination.

Ø  If the grasses do not growth satisfactory, a second spray of liquid form fertilizer would be carried out.

Ø  At the filling area, solid fertilizers are manually applied on the hydroseeded area.

 

11.0 MAINTENANCE PROCESS

Ø  To cut the hydroseeding prior to handing over not more than one third of the blade at any one time and ensure no overcutting resulting in bare or brown patches.

Ø  After one (1) month, the supervisor shall conduct a site checking on the hydroseeding area. If the grass does not grow satisfactorily or do not grow due to various site conditions, a reseeding process shall be carried out for the same area.

Ø  However, we shall not be liable for re-hydroseeding if soil erosion, landslide and etc that may affect the growth of grass.

Ø  In addition, where the material is rocky or toxic to plants, the growth is not guaranteed.

 

12.0 TRAFFIC MANAGEMENT AND MONITORING

12.1 Maintenance of existing roads, footpaths and service drains, etc.

Ø  The construction team shall maintain all existing site excess, roads, footpath, service drain, etc. and reinstate any damage caused by any reason whatsoever during the progress of the works.

Ø  It will be the Safety Officer/Supervisor’s responsibility to ensure that ingress and egress to the site are kept free from obstruction brought about by the work on this site and in no way shall cause hindrance to traffic or ancillary works either by his own vehicles or by his work people, material, etc.

 

13.0   SAFETY PROGRAMME

13.1    Temporary Works and Public Safety

Ø  The Safety Officer/Supervisor shall be responsible for submission of plans and drawings to the relevant Authorities for the construction of all the necessary temporary drains and desilting pits, safety nettings for the works. 

Ø  The Safety Officer/Supervisor shall provide adequate signboards at all strategic positions warning the public to keep away from the work site and erect temporary fencing and barriers where necessary around the site to prevent unauthorized trespassing during works.

 

14.1    ENVIRONMENTAL PROGRAMME

All works should be carried out in accordance to best practice environmental management as defined in the EMP.

 

14.1    Site Access.

Ø  The access as well as the portion of public road and walkway connected with it shall be always kept clean and safe.

14.2   Temporary Work.

Ø  Existing drain shall be identified by contractor together with the flow of drain until discharge point in order to make use of it during clearing work. Silt trap shall be provided before any discharge of surface water within site towards existing drain. This work should be completed prior to the commencement of any activities.

Ø  Temporary earth drain shall be constructed along clearing area to retain the surface water from dismissal directly towards existing drain. Desilting work shall be carried out regularly and the existing drain will be maintained during work.

Ø  Any effluent discharges from the site must comply with the Third Schedule of the Environmental Quality (Sewage and Industrial Effluents) Regulation 1979.

14.3   Waste Management.

Ø  Any construction wastes, solid wastes and domestic wastes other than schedule wastes must be disposed-off at the approved disposal site. On site compositing for biodegradable waste is allowable but land filling and open burning activities for the solid waste are strictly prohibited.