The Engineers Blog

Category: Method of Statement

  • METHOD STATEMENT FOR THE JACK PROPPING SUPPORT AT BASEMENT 1 SLAB

    METHOD STATEMENT FOR THE JACK PROPPING SUPPORT AT BASEMENT 1 SLAB

    1. Purpose of Work
      This work procedure describes the method to be adopted for Jack Propping Support at Basement 1 Slab as shown in the
      drawings and as directed by the engineer in charge.
    2. Equipment’s Required
       U – Jack
       Vertical Slab
       Base Plate
    3. Man Power Deployments
      Staff Details:
       Project manager
       Project Engineer
       Q/A –Q/C
       Safety Officer
       Foreman
      Labour Details:
       Shuttering Carpenter – 10 nos.
       Helpers – 5 nos.
    4. Method / Procedure :
       Before removing the frame and support of the slab, the Jack Propping will be placed before the removal of
      the slab frame as the replacement support. The removal will be as per row with corresponding distances as per
      shown in the drawing.
       Well trained, experienced and appropriate personnel shall be deployed to carry out jobs and experienced
      supervisors the jobs to look after and ensure the safeness of the work.
       Working platform shall be kept clean at all times and under no circumstances should they be utilized for
      stockpiling of materials.
      NOTE:
      We are kindly requesting you to give us permission to do the Jack Propping Support at Basement 1 Slab, since we already
      completed the casting of Basement 1 Slab for about 14 days today (February 25, 2016).
      We are taking the responsibility for any consequences happened. Herewith attached the plan and section for the said
      work.
  • METHOD STATEMENT FOR THE CONCRETING at RAMP SLAB

    METHOD STATEMENT FOR THE CONCRETING at RAMP SLAB

    1. Purpose of Work
      This work procedure describes the method to be adopted for Concreting Work at Ramp Slab as shown in the drawings and as directed by the engineer in charge.
    2. Reference
       Contract Specification.
      o C45/20 OPC (210kg)+50% GGBS(210kg)
       Applicable drawings.
      o DM Approved drawing
    3. Equipment’s Required
       Concrete Placer Pump with 42m arm length – 1 no. working ( 1 no. standby)
       Concrete Vibrators with needles – 3 nos. 40 needle( 1 no. 40 needle standby)
       Air compressor -1 nos.
       Power Floater – 2 nos. ( 1 no. Standby)
       Survey Instrument / Dumpy level & leveling Staff
       Required Cube Molds ; 10 cube molds for 80 m3
       Slump Test Accessories/ Temperature Machine – 1 set
       Hessian Clothe for Curing
    4. Man Power Deployments
      Staff Details:
       Project manager
       Project Engineer
       Q/A –Q/C
       Surveyor
       Safety Officer
       Gen. Foreman
       Concrete Foreman
       Shuttering Foreman
      Labour Details:
       Mason – 5 nos.
       Helper – 10 nos.
       Shuttering Carpenter – 2 nos.
       Steel Fitter – 5 nos.
       Electrician – 1 no.
       Plumber – 1 no.
       Flagmen – 2 nos.
      2
    5. Method / Procedure :
       The formwork & reinforcement will be offered for Client/ Engineer inspection before commencement of concrete.
       Upon clearance from Consultant’s Engineer, each concrete truck shall be dispatch within 90 minutes from the Batching time.
       Approved surface and central water stoppers shall be fixed in external and internal walls respectively and this will be fixed as per manufacturer specifications before concrete.
       Concrete temperatures are recorded for each truck load of concrete and concrete temperature shall not exceed 30 ºC at the time of placing. ( Due care will be taken during summer to keep the concrete temperature with in specified limits).
       Slump will be taken for every truck and recorded to comply with the approved concrete mix design ie. 150mm +/- 25mm.
       Concrete cubes will be made in the ratio of 6 cubes per 100cum of concrete, shall be properly marked and cured for the cube crush test. Cubes will be crushed in the laboratory at 7days & 28 days to check for the compressive strength of concrete..
       As shown in the drawing plan, we required One ( 1) Concrete Pump designated in different locations and area of pouring (as shown the sequence of pouring/casting from designated Concrete Pump).
       Casting will be group into 1 group as shown on the attached drawing plan.
       It should be starts at the starting point of the ramp from the Basement 2 (B2) with the offset width / strip width of 1.5m and onwards to control the flowing of concrete down to the lower part. Need to provide distance allowance for the concrete to flow and need to control the pouring of the pump.
       Compaction will be done immediately after pouring using vibrators. Concrete shall be vibrated immediately after pouring.
       Petrol vibrators of frequency 8000 cycles/minute, and 40 mm in diameter for normal use.
       Formwork fixers & materials shall be made available stand-by during concreting operations.
       Hessian shall be kept wet by adding water or by ponding.
       A separate pouring sequence including positioning of concrete placers, rate of pour, location of concrete truck inspection, cube casting etc will be prepared and submitted separately for major pours.
       Formwork to the sides of concrete surface (vertical sides) shall be removed after 12 hrs and the vertical sides will be kept wet by wrapping with wet hessian cloth.
       After required finishing, cover it with polythene sheet for further dust protection.
      3
    6. INSPECTION PROCEDURES:
       Inspection Test Procedures shall be according to the QA/QC Inspection & Test Plans.
       Upon completion of formwork & rebar the relevant inspection points are checked by Client/Engineer representative and cleared for concreting.
       Attached copy of pour card and slump, temperature record will be maintained.
    7. STRIKING/REMOVAL OF FORMWORK
       Stripping of forms, supporting props above and below ground shall be confirmed with respect to calculated strength from the tests performed on field cured cubes. Forms will be removed in such a manner as not to damage the concrete but only after the concrete has gained sufficient strength to support itself.
    8. SAFETY REQUIREMENT
       Well trained, experienced and appropriate personnel shall be deployed to carry out jobs and experienced supervisors the jobs.
       Appropriate personnel protective equipments like gloves, goggles should be worn apart from the safety shoes and helmets which are mandatory.
       While placing the concrete out of direct line sight of pump, crane or delivery truck operator a suitable experienced person shall be present till concreting is finished.
       The platform should be properly supported by standard scaffolding tube made up of steel, with out any cracks, splits and surface flaws.
       Hand rails at the height of 1m from the edge of the board shall be provided at the free ends of platform.
       Working platform shall be kept clean at all times and under no circumstances should they be utilized for stockpiling of materials.
    9. ENCLOSURES
       Pour card
       Slump and temperature record.
  • METHOD STATEMENT FOR THE CONCRETING of SLAB at BASEMENT 1

    METHOD STATEMENT FOR THE CONCRETING of SLAB at BASEMENT 1

    1. Purpose of Work
      This work procedure describes the method to be adopted for Basement 1 Slab Concreting Work as shown in the drawings and as directed by the engineer in charge.
    2. Reference
       Contract Specification.
      o C40/20 OPC (120kg)+70% GGBS(280KG)
       Applicable drawings.
      o DM Approved drawing
    3. Equipment’s Required
       Concrete Placer Pump with 42m arm length – 2 noS. working ( 1 no. standby)
       Concrete Vibrators with needles – 1 no. 60 needle and 4 nos. 40 needle( 1 no. 40 needle standby)
       Air compressor -1 nos.
       Power Floater – 4 nos. ( 1 no. Standby)
       Survey Instrument / Dumpy level & leveling Staff
       Required Cube Molds ; 20 cube molds for 200 m3
       Slump Test Accessories/ Temperature Machine – 2 sets
       Hessian Clothe for Curing
    4. Man Power Deployments
      Staff Details:
       Project manager
       Project Engineer
       Q/A –Q/C
       Surveyor
       Safety Officer
       Gen. Foreman
       Concrete Foreman
       Shuttering Foreman
      Labour Details:
       Mason – 10 nos. ( 5 /group)
       Helper – 20 nos. ( 10/ group)
       Shuttering Carpenter – 8 nos.
       Steel Fitter – 10 nos.
       Electrician – 02 nos.
       Plumber – 02 nos.
       Flagmen – 3 nos.
      2
    5. Method / Procedure :
       The formwork & reinforcement will be offered for Client/ Engineer inspection before commencement of concrete.
       Upon clearance from Consultant’s Engineer, each concrete truck shall be dispatch within 90 minutes from the Batching time.
       Approved surface and central water stoppers shall be fixed in external and internal walls respectively and this will be fixed as per manufacturer specifications before concrete.
       Concrete temperatures are recorded for each truck load of concrete and concrete temperature shall not exceed 30 ºC at the time of placing. ( Due care will be taken during summer to keep the concrete temperature with in specified limits).
       Slump will be taken for every truck and recorded to comply with the approved concrete mix design ie. 150mm +/- 25mm.
       Concrete cubes will be made in the ratio of 6 cubes per 100cum of concrete, shall be properly marked and cured for the cube crush test. Cubes will be crushed in the laboratory at 7days & 28 days to check for the compressive strength of concrete..
       As shown in the drawing plan, we required three ( 2) Concrete Pump designated in different locations and area of pouring (as shown the sequence of pouring/casting from designated Concrete Pump).
       Casting will be group into 2 groups as shown on the attached drawing plan.
       Compaction will be done immediately after pouring using vibrators. Concrete shall be vibrated immediately after pouring.
       Petrol vibrators of frequency 8000 cycles/minute, and 40 mm in diameter for normal use.
       Formwork fixers & materials shall be made available stand-by during concreting operations.
       Hessian shall be kept wet by adding water or by ponding.
       A separate pouring sequence including positioning of concrete placers, rate of pour, location of concrete truck inspection, cube casting etc will be prepared and submitted separately for major pours.
       Formwork to the sides of concrete surface (vertical sides) shall be removed after 12 hrs and the vertical sides will be kept wet by wrapping with wet hessian cloth.
       After required finishing, cover it with polythene sheet for further dust protection.
      3
    6. INSPECTION PROCEDURES:
       Inspection Test Procedures shall be according to the QA/QC Inspection & Test Plans.
       Upon completion of formwork & rebar the relevant inspection points are checked by Client/Engineer representative and cleared for concreting.
       Attached copy of pour card and slump, temperature record will be maintained.
    7. STRIKING/REMOVAL OF FORMWORK
       Stripping of forms, supporting props above and below ground shall be confirmed with respect to calculated strength from the tests performed on field cured cubes. Forms will be removed in such a manner as not to damage the concrete but only after the concrete has gained sufficient strength to support itself.
    8. SAFETY REQUIREMENT
       Well trained, experienced and appropriate personnel shall be deployed to carry out jobs and experienced supervisors the jobs.
       Appropriate personnel protective equipments like gloves, goggles should be worn apart from the safety shoes and helmets which are mandatory.
       While placing the concrete out of direct line sight of pump, crane or delivery truck operator a suitable experienced person shall be present till concreting is finished.
       The platform should be properly supported by standard scaffolding tube made up of steel, with out any cracks, splits and surface flaws.
       Hand rails at the height of 1m from the edge of the board shall be provided at the free ends of platform.
       Working platform shall be kept clean at all times and under no circumstances should they be utilized for stockpiling of materials.
    9. ENCLOSURES
       Pour card
       Slump and temperature record.
  • METHOD STATEMENT FOR RAMP SLAB FORMWORK AT STARTING POINT

    METHOD STATEMENT FOR RAMP SLAB FORMWORK AT STARTING POINT

    Purpose of work: It describes the methodology for the execution work for the Ramp Slab Formwork from Starting Point
    EXECUTION

    1. Surveyor has given marking for the proper measurement for the Ramp Level and Length.
    2. The slope started towards maximum 40 cm. ht. from SSL.
    3. After casting the slope area from 0.00 level to 40cm ht., we have to start wood formwork/ shutter towards Water Tank Area.
      With this, we are assuring that the 40 cm. ht. is enough and accessible to do the de-shuttering/ dis- mantling of formwork .
      Note: Kindly see Submittal Ref. No. CC/AP/269/00/126
      Submission of Shop Drawing for Ramp Shuttering at Basement 2 ( Formwork)
  • METHOD STATEMENT FOR REPAIRING OF BULGED AREA at RETAINING WALL

    METHOD STATEMENT FOR REPAIRING OF BULGED AREA at RETAINING WALL

    Purpose of work: It describes the methodology for the execution / treatment for the Bulged Surface Area at Retaining Wall ( Ret. 3A)
    Reference:

    1. Project Specification
    2. Approved Drawing
      EXECUTION
      A. Surface Preparation
    3. Surveyor give mark for the proper measurement of Retaining Wall thickness.
    4. Chipping/ Cutting / Grinding of Mark Excess Concrete will be removed to attain the proper thickness of the wall.
    5. All loose materials to be removed from the surface, clean and uncontaminated.
    6. After doing apply the Approved Material for Concrete Repair.
      B. Mixing 1. One bag 25kg of Polycrete MC requires 2.75-3.25 liter of clean potable water . 2. Mix in suitable size drum using on approved grout paddle at a slow speed (300/400 rpm) with heavy duty drill. 3. Pour required amount of water in mixing vessel followed by Polycrete MC. 4. Mix for 3 minutes to get homogeneous and consistent mix. C. Placing 1. The mix material should be placed within 30 minutes it can be poured or pumped in to the repair area to fill the cavity at the required level. 2. No vibrator is required after concrete has initially set , the surface may be finished to the desired Texture.
      D. Curing
      Due to the presence of rapid drying polymers ,the repaired area shall be cured in accordance with good concrete curing practice. Curing shall be done by non degradable type of curing compound or wet hessian cloth. When cured with wet hessian cloth, the area shall be covered immediately with high density polyethylene sheet which shall be taped to all edges. It will take maximum of 24 hours treatment time.
  • METHOD STATEMENT FOR CONCRETE REPAIR AT RETAINING WALL using SPECTITE Swellseal Bentobar

    METHOD STATEMENT FOR CONCRETE REPAIR AT RETAINING WALL using SPECTITE Swellseal Bentobar

    Purpose of work: It describes the methodology for the execution for Concrete Repair at Retaining Wall with PVC Water Stopper using SPECTITE Swellseal Bentobar.
    EXECUTION FOR CONCRETE REPAIRING WORK
    A. Surface Preparation

    1. All loose materials to be removed from the surface, clean and uncontaminated.
    2. Fully clean the concrete and remove any loose or flaking concrete.
    3. Oil and grease deposits are best removed by steam cleaning, detergent scrubbing or the use of proprietary degreaser. The effectiveness of decontamination should be assessed by a pull-off test.
      B. Fixing 1. Firmly press the entire length of Sectite Swellseal Bentobar into place along the affected area make sure it has good contact with the substrate. 2. It should be placed in the center about 300 mm or closer around sharp corner, etc. 3. It can be fixed with contact adhesive or, especially onto rough or damp concrete. 4. End connections and corners must be tightly butt joined to form a continuous length. Do not overlap. Place in maximum practicable lengths to minimize end joints. Where required, cut coil with a sharp knife or utility blade. 5. This not use in any movement joints. Note:  Spectite Swellseal Bentobar should not be exposed to water, rain or excessive moisture after installation and before concreting in order to avoid risk in premature hydration.  Protect the installed product from such incidents. If there are signs of hydration.  Do not use Spectite Swellseal Bentobar in open joints, expansion joints or where risk of hydrocarbon ( fuel and solvents) contamination exists.
  • METHOD STATEMENT FOR UN-EVEN SURFACE AT RETAINING WALL VERTICAL CONSTRUCTION JOINT

    METHOD STATEMENT FOR UN-EVEN SURFACE AT RETAINING WALL VERTICAL CONSTRUCTION JOINT

    Purpose of work: It describes the methodology for the execution for the un-even surface at Retaining Wall Vertical Joint.


    EXECUTION FOR SURFACE PREPARATION
    All loose materials should be removed from the surface by manually chipping of excess concrete until it reached the minimum thickness and by gradual mechanical abrading until it achieved and reached the same surface alignment of previous casted retaining wall.

  • METHOD STATEMENT FOR GYPSUM CEILING WORK

    METHOD STATEMENT FOR GYPSUM CEILING WORK

                  CONTENTS     SCOPE OF WORK     SUBMITTALS     SITE INSTALLATION WORKS     FRAME WORK INSPECTION, MEP CLEARNCE & CLOSURE   FINISHING GYPSUM BOARD ASSEMBLIES   FINAL CHECK UP AND HANDING OVER     SNAGGING / DESNAGGING  
    1. SCOPE OF WORK
      1. Supply and installation of Gypsum ceiling all in accordance with specification, contract documents & BOQ.
    1. SUBMITTALS
      1. All the layout and construction details to be incorporated into the work shall be prepared on shop drawing and submitted for consultant’s approval. Consultants approval should be obtained prior to the commencement of work. Commented drawings will be resubmitted incorporating the comments.
      1. All the material submittals will be made and which are to be approved by the Consultants prior to the incorporation into the works. On receipt of material approval the material procurement will follow by placing orders with suppliers.
    1. SITE INSTALLATION WORKS
      1. SITE SURVEY
        1. On receipt of the shop drawings approved by the Consultants, the site will be surveyed and any discrepancy found will be notified to the Main Contractor for clarification.
    1. SETTING OUT
      1. Setting out & marking will be done as per approved shop drawing. The surveyor will carry out the layout markings as per the approved drawings in concurrence with the schedule of works, area availability and as per the Site Engineer’s instructions. Ceiling layout shall be marked based on the datum line provided by the Main Contractor. Based on the datum lines, chalk lines will be marked for fixing the wall angle according to the ceiling level. Any discrepancies to the drawing and the setting out found will be brought to the notice of the main contractor. Once the wall angles are fixed the framing of the ceiling is done and the same is submitted for inspection of the engineer for approval.
    1. FRAME WORK
      1. Based on the datum lines, chalk lines will be marked for fixing the wall angles. From the datum the ceiling level is marked and the wall angle is fixed. Then the position of ceiling hangers is marked at 1200 mm centers both directionally. Hangers will be fixed on the structural soffit as per the approved shop drawing detail along the main carriers. Spacing of hangers shall not exceed 1200 mm. The bottom of the hanger is fixed to the carrying channel by using chrome plated self tapping screws. To the carrying channels the furring channels are fixed perpendicularly at 600 mm centers. The furring channels are fixed by using self tapping channel screws 12 mm long. The bottom level of the furring will be to the level of the wall angle fixed. The framing is complete for boarding.
    1. FRAME WORK INSPECTION, MEP CLEARNCE & CLOSURE
      1. Upon receipt of framework approval and MEP clearance, closure can be commenced by fixing the gypsum board to the framing with screw fixings as recommended by the manufacturer. The gypsum board is fixed to the framing by a staggering adjacent layer of boards and perpendicular to the furring.
    1. FINISHING GYPSUM BOARD ASSEMBLIES
      1. Upon completion of the gypsum boarding to the frame, the joints are treated with the approved joint compound with a level 4 finish. The open joints and damages are pre-filled with the compound. The joints are taped with a fibre tape.  Then the joint compound is applied in two layers for width 75 mm each to either side of the joint. After drying the joint compound is sanded smooth to receive paint.
    1. FINAL CHECK UP AND HANDING OVER
      1. On completion of boarding and finishing the DESTEC site-in-charge will inspect the area and make sure that the ceiling is in true line and level and raise an RFI for Main Contractor’s and Consultant’s approval. All MEP services mounted on the ceiling is marked by the MEP team and the same to be cut according to the markings.
    1. SNAGGING / DESNAGGING
      1. Any minor discrepancy/snags identified during Main Contractor’s/Consultant’s Inspection which would be listed areas wise for desnagging.
      1. Upon completion of de-snagging, a witness request would be raised to the Main Contractor to “sign off” the snag list for the issuance of completion of works certificate.
  • PLASTER WORK METHOD OF STATEMENT

    PLASTER WORK METHOD OF STATEMENT

    CONTENTS

    1. PURPOSE
    • SCOPE
    • REFERENCES
    • DEFINITIONS
    • RESPONSIBILITIES
    • MATERIALS & EQUIPMENT
    • PROCEDURE
    1. PURPOSE:

    The purpose of this method statement is to define the procedure for internal and external plaster work in accordance with the requirement specified in the relevant specification procedures and drawing throughout the progress of the work

    • SCOPE:

    This method statement applies to the application of plaster works complying with the project General specifications for civil & architectural works

    • REFERENCES
    • General specifications for civil & architectural works
    • Approved Shop Drawings
    • Material Approval Request
    • DEFINITIONS:
    • MS               :  Method Statement.
    • ITP               :  Inspection & Test Plan.
    • IR                 :  Inspection Request.
    • FM               :  Check Sheet.
    • PM               :  Project Manager.
    • PE                :  Project Engineer.
    • SR                :  Surveyor
    • QC               :   Quality Control
    • HSE              :   Health, Safety & Environment
    • RESPONSIBILITIES:
    • Project Manager is overall responsible for the project execution, quality, and safety.
    • Surveyor to check the positioning of the walls.
    • Project Engineer is responsible for overall execution of the job and is directly responsible for the quality of the job being produced.
    • Project Engineer shall ensure that all works are carried out according to design.
    • Site foreman to ensure that the work crew is familiar with the safety requirements
    • EQUIPMENT & MATERIALS  (which may be used):

    Equipment :

    • Plaster checking Equipment (Straight edge)- different sizes of aluminum tubes.
    • Measuring Tapes

    Materials :

    • Plaster Accessories 
    • Rush coat for concrete surfaces
    • Render for concrete surface & block work)
    • Clean potable water.

    Manpower :

    • Site Engineer     
    • Qualified Foreman
    • Qualified Masons
    • Helpers
    • PROCEDURE :
    • INSTRUCTIONS:
    • All the necessary PPEs will be provided (safety shoes, helmet, hand gloves), safety belts and scaffolding.
    • Company waste management guidelines shall be adhered in disposing all the waste.
    • All survey instruments shall be calibrated by the approved agency as per Company guidelines.
    • PRE-COMMENCEMENT REQUIREMENTS:
    • Approved drawings and work procedures shall be obtained from consultant prior to the start of activity.
    • SETTING OUT
    • Prior to the commencement of the works confirm all reference points and levels.
    • Key pads shall be fixed over the wall at 2.5m minimum distance to be taken as per alignment of door sub frame, thickness of plaster and plumb.
    • Fixing of sub frames shall be done as per approved anchors and approved drawings.
    • PREPARATION OF DRY MIX PLASTER:
    • Mechanical mixers will be used for making of the mix for the plastering.
    • No more material than can be used in one an hour shall be mixed.
    • Any partly set, caked or lumpy material will be discarded.
    • Follow manufacturer’s recommendation for mixing the dry mix plaster to be available at site during inspection.
    • CO-ORDINATION WITH OTHER TRADES:
    • No plaster to be started on any wall until and unless it is cleared for plaster.
    • Prior to start of plasterwork, check, all architectural, rough wooden sub frames, mechanical, and electrical works are completed and MEP clearance obtained
    • Make sure the work area is free from any excessive moisture.
    • Removal of deterring materials, loose mortar, mortar dropping…etc.
    • AREA OF USAGE & FIXING  OF ANGLE BEADS, COIL LATH & EXPANDED MESH
    • The required angle beads will be placed for all vertical and horizontal edges as per specifications requirements.
    • Angle beads to all horizontal and vertical external angle.
    • Angle bead shall be in one length up to 3000mm.
    • Beads to be anchored at 300mm c/c maximum as per approved specification.
    • Coil lath with 200mm width as per approved specifications shall be installed at dissimilar substrate.
    • All joints between RCC and block work shall be reinforced by approved mesh of minimum width 100mm with anchor spacing of 300mm minimum
    • The plastering accessories shall be fixed with the help of nails. Galvanized for internal and stainless steel for external)
    • ERECTION OF SCAFFOLDING:
    • Scaffolding will be erected using standard and ledgers by certified scaffolders for plaster work above 1.5m high externally (if any).  Wooden planks should be placed over ledgers to serve as working platform with proper toe board. Scaffolding must be inspected, approved, and tagged by contractor competent scaffold inspector before use.
    • SURFACE PREPARATION
    • Irregularities in the surface to be plastered or rendered shall be filled with mortar, without lime, 24 hours before plastering is commenced.
    • For Rush Coat: Remove all dust, loose particles, oil, grease from the concrete surface. Spray sufficient amount of clean potable water to neutralize the suction of the background. Allow the free water to evaporate completely before application
    • Apply rush coat as per its application Method Statement on concrete surfaces. (Example: Lintels and any other concrete)
    • Cure rush coat for 2 days.
    • EXECUTION OF PLASTERING
    • Complete all preparatory work to check and approve prior to commence the plaster work.
    • Plaster accessories such as angle beads shall be used in  external angles for giving better shape and shall be fixed with nails (Galvanized inside & stainless steel outside)
    • Coil lath and expanded mesh shall be installed in areas such as dissimilar substrate and joints between RCC and block work to prevent cracks from occurring.
    • Prior to start plaster, the adjacent finish works shall be protected well.
    • An IR shall be raised to check all the installation of the required plastering accessories and also to check the dots and the bands and to assure that the dots and bands are levelled with the plaster stoppers and sub frames.
    • Proper hand tools will be used for plaster works.
    • Professional masons will do the plaster works.
    • Plaster shall only be stopped at angle beads or plaster stops or at an induced groove.
    • Plaster on block walls shall be done up to plaster stopper fixed by nails at 30mm staggered or at the door sub-frame
    • The corners, angles, and intersections will be sharp and neat.
    • The finish coat will be applied from angle or corner to corner, in one operation.
    • Any metal items / embedded items shall be set flush with plaster or as per approved Shop Drawing. They shall be galvanized for internal and SS for external.
    • The finish coat shall be smooth, free of tool marks, dense and free of rough appearance to accept paint or specified wall covering. Incase ceramic is going to be glued on plaster, the plaster surface to be roughened.
    • Joints of blockwork area to be well racked out before plastering to form a good key.
    • Straight edge will be used to check that all the plaster works is in the same level.
    • Plumb-Bob is used to assure the verticality of the plaster works.
    • Squareness of openings/window/door sills will be checked by measuring sizes and diagonals.
    • IR shall be submitted after completion of all plaster works.
    • Where the thickness of plaster is expected to exceed 15mm it must be applied in two coats with receding thickness. Each layer must be fully cured and sufficiently dry before going for next layer. Maximum permissible allowable thickness is as per manufacturers recommendation.
    • In case of joint is going to be performed in plaster, saw tooth shaped key shall be made to ensure proper interlocking and connection between new plaster,
    • Curing to be applied for 2 days.
    • MATERIALS DELIVERY & STORAGE:
    • Plaster stopper, coil lath and other plaster accessories shall be stored in crates to prevent damage to the material. Bent or deformed material shall not be used for work.
    • Plaster, cementitious materials and fiberglass shall be delivered and stored in a dry area within the building or covered by polythene sheet if kept outside the building
    • PATCHING AND CLEANING:
    • Cracks and deboning areas shall be checked after the curing period
    • Whenever patching work is done, it should be neatly done to match the adjoining work in texture and finish, and the whole work left in first class condition for painting or wall covering.
    • Plaster shall be cleaned completely of dust, dirt and other contaminates before Work is finally submitted for approval.
    • Upon completion of work, any debris resulting from plaster work will be removed.
  • BLOCK WORK METHOD OF STATEMENT

    BLOCK WORK METHOD OF STATEMENT

    TABLE OF CONTENTS

    1.           PURPOSE. 2

    2.           SCOPE. 2

    3.           DEFINITIONS. 2

    4.           REFERENCE DOCUMENTS. 2

    5.           DUTIES AND RESPONSIBILITIES. 3

    6.           RESOURCES. 3

    6.1.       Human Resource.. 3

    6.3.       Material 4

    7.2.       Sequence of Construction. 5

    10.1…. Risk Assessment Analysis 7

     

    1.           PURPOSE

    The purpose of this Work Method Statement for Block Works (Concrete Masonry Units) is to describe in detail the procedure such as setting and lay-out plan on actual location, erection of scaffolding, mixing of cement mortar, mounting/laying of blocks and all other related activity. Inform all concerned supervisor including workers the value and importance of this activity prior to implementation. This activity should be performed with strict compliance and implementation of Safety Requirements & Procedure and project specifications to complete the work.

    2.           SCOPE

    This Method Statement (MS) cover the Installation of concrete BLOCK MASONRY work.

    3.           DEFINITIONS

    4.           REFERENCE DOCUMENTS

    1. Project Specifications:
    • Part A-Specification for Civil & Architectural Works Division 04-04220: Concrete Masonry Units and any material parts in the other divisions and sections.
    • Drawings: As per Project Standard Drawings
    • Material Approval Request
    • Shop Drawings
    • Approved sample.

    5.           DUTIES AND RESPONSIBILITIES

    1. CONTRACTOR project Manager shall be responsible to ensure the implementation, quality, safety and approved Shop drawing.
    2. CONTRACTOR Section /Site Engineer(s) shall implement/supervise the work.
    3. Foreman and charge Hands shall carry out work with safety requirements.
    4. CONTRACTOR Safety Engineer/Officer shall monitor work for safety requirements.
    5. QC Inspector: Responsible for monitoring daily discipline and verify that the compliance to specified quality requirements. Check the work before submit the request to company for review /approval. Submit request for inspection 24 hours before the inspection.
    6. The work shall be progressively offered to COMPANY for inspection and approval, in accordance with the approved ITP.

    6.          RESOURCES

    6.1.      Human Resource

    1. Supervisor
    2. Foremen
    3. Surveyor and Helper
    4. Equipment Operator
    5. Block Work Mason
    6. Steel Fixer
    7. Unskilled Labors
    8. HSE Supervisor   
    • Plant And Equipment
    1. Mortar Mixer – 1 no.
    2. Masonry Tools for Block Work as required (Cement Trowel, Masonry Hammer etc.)
    3. Block  Trolley as required
    4. Block Cutting Machine (Electric/Manual).
    5. Drilling Machine+ Bit.
    6. Nail Gun.
    7. Aluminum Straight Edge – As required
    8. Measuring Tools – As required
    9. Scaffolding and Planks
    10. 10mm Rod for mortar thickness checking – As required
    11. Spirit level  – As required
    12. Plumb Bob
    13. Line Dory

    6.3.    Material

    1. Concrete Block                         
    2. Dry Mix Mortar for Masonry      
    3. Block Work Accessories                        
    • METHOD AND SEQUENCE OF CONSTRUCTION
    • General and Preparatory Works.
    1. CONTRACTOR shall obtain the relevant block work permits as required to commence work. Permits shall be kept at site during works in “PERMIT BOX”
    • Adequate where barriers, access, sign boards, warning signs, traffic control Measures shall be provided where required. Tool box talks will be conducted every prior to start the work.  

    7.2.    Sequence of Construction

    1. Method and Sequence of construction
    1. A- Mock –up of typical block masonry shall be constructed for each type of external and internal location to demonstrate How to fix Accessories & Quality of Material and Execution of work and written approval (through ITR procedure) shall be obtained prior to proceeding with further actual works at site.

    Note; (The Mockup may be part of the permanent work at site)

    • Setting Out
    • The area where block are to be laid will be cleaned.
    • Surveyor, Site/Section Engineer, QC Engineer shall indorse the marking for block work following the approved shop drawing. Tolerance as per the approved Shop drawings   
    • Execution
    • Area shall be clean prior to starting work.
    • First layer of blocks to be solid blocks and it should be fully set out with proper alignment.
    • Around openings and sills (under windows) should be of Solid block.
    • Mortar mix ratio 1:3, and to be Mix no more mortar at a time than can be used within one and half hour. Mortar not used within the one and half hour time shall be disposed off. Do not re-temper mortar
    • All walls shall be built true to dimensions, plumb. All work shall be laid to line, in level courses and all individual face units shall be kept “in plane”. All unit masonry shall be laid using running bond. Joints shall run straight and plumb.  
    • All masonry units shall be laid in a full bed of mortar with full head joints.
      All required cutting of masonry shall be done with power equipment which will produce true edges free of chipping and undamaged surfaces.
    • Where fresh masonry joins masonry that is partially or totally set, the exposed
      surface of the set masonry shall be cleaned and wet lightly so as to obtain the best possible bond with the new work. All loose masonry and mortar shall be removed.
    • Chipping and scrabbling on concrete and columns prior to the block work.
    • No more than 6 lines shall be built vertically in the same day.
    •   Buildings (Block wall) shall be fixed to the main structure by stainless hooks with a layer of fiberglass meshes along the width of wall, every three built lines.
    • Walls built using retarder mortar shall be adequately cured for a period of not less than 24 hours before any further work on the wall can take place. The mortar beds and vertical joints shall be 10mm nominal thickness and shall not exceed 15mm.
    • Other trades shall be consulted and provisions made to permit installation of their work in a manner which will avoid cutting and patching as the work progresses. Tapping of units shall not be permitted after mortar has taken its initial set. Irregular work shall be replaced with fresh mortar.
    • Final cleaning of all masonry work shall be with water and fiber brushes. Any
      defective mortar joints shall be cut-out, filled solidly with mortar, and tooled to match adjacent work. All surplus materials, debris, tools and equipment shall be removed from the site on daily basis.
    • Joints shall be raked by 5mm to form key for plaster.
    • Reinforced voids in the block work shall be filled with mortar.
    • Testing for block work and the daily mortar sampling as per specification and the BS 6073 & BS 4551
    • QUALITY CONTROL
    1. Inspection and test request (ITR) for Block Masonry will be submitted for Witness.
    • Approved Construction Check Sheet will verify the completed work.
    • HSE
    1. All worker will wear PPE (Helmet, Glasses, Gloves, Boots, Full sleeve cotton coverall as a minimum)
    • Proper access (Stair with handrails and hard barricaders) shall be provided as per CONTRACTOR/ COMPANY HSE procedure.
    • Refer to attached activity Risk Assessment.
    1. ATTACHMENTS
    1. Risk Assessment
    1. Quality Control Procedure (QCP)
    1. Inspection & Test Plan (ITP)
    1. Check List
    1. Specification – Concrete Masonry Unit (04220)
    1. ATTACHMENTS
    SL NOACTIVITYRISKPREVENTIVE MEASURE
    1Setting up scaffoldingStruck up by falling scaffolding. Improper set-up FallingCompetent supervisorCompetent scaffoldersApproved toolsBarricadesSign boards 100%tie off with safety harness  
    2Climbing up scaffoldingStruck by falling scaffolding. Fall injury for self and othersUsing Life lineCompetent supervisorTrained workers3 point contact while climbing laddersRoutine inspectionSafe accessGreen tag  
    3Manual handlingBack injury Spinal dislocation Hand injury Pinch pointsProper accessTrained workers100% tie off                                    Proper techniquesGreen tag  
    4Working at heightFalling from height Death InjuryProper accessTrained workers100% tie off Safety harnessGreen tagSign boardsGood light  
    5Scaffold erection and DismantlingFalling workers during scaffold dismantling. Falling objects like steel pipes, clamps, tools and other materials Struck by flying materialsScaffolding dismantling area to be cordoned off with barrier, etc. and warning sign provided i.e. “keep out”.All scaffold material to be lowered to the ground by rope only, not thrown down. Dismantle the scaffold don’t demolish it and applied Red tag during dismantlingAll dismantling work carried out under strict supervision of Scaffold & job supervisor. Secure hand tools in place with safety lanyardsAppropriate PPE to be worn at all the time i.e. Helmet, safety shoe, Goggles, Full body harness, etc. and attached to a strong fixing point
    7Emergency ResponseIncident / AccidentSupervisor should know the emergency contact numbers, assembly point  Standby vehicle required during working time
    8Mixing of Mortar and Plastering Work  Personnel Injuries Insulation of dust  Training for the Safety Officer Worker, Pre job talk. PPE
    9Removal of waste material after Plastering work  Stumble and fall occupational health problems  Good housekeeping, Pre job talk training for the worker  
    10Loading & UnloadingFall / strike against persons struck by the load. Failure of lifting Load could move out of control and strike Structures people of vessels. Unauthorized persons or vehicles can come Into the lift area.  Tag lines are to be attached to the loads being lifted and these are to be manned during lifting.Only Authorized persons will be allowed into the lifting area.Tag lines are to be attached to the load and the load is to be controlled whilst being moved.Crane movements are to be controlled by a banks man using standard crane signals.Lifting is to be planned taking recognizance of length a weight and shape of load.Inspect site & position crane accordingly.Steel plates to be placed under crane.Ground to be compacted and steel plates placed.Stacks are to be built under the direction of a competent person.
    11StorageFalling of materials Stack collapse injuring peopleUse proper wooden beams at proper place while stacking.Ensure the stack can support the load placed on it.Stacks may only be constructed and stripped under the supervision of a person trained and experienced in building and breaking stacks.