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METHOD STATEMENT FOR BRICK WORK

Er. Parbhakar Dwivedi
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Reference

The following reference shall be used in conjunction with this procedure

  • Technical Specifications
  • IS Codes : IS 1077
  • Drawings
  • BOQ

Resources Used

A. Manpower

  • Skilled Labour
  • Unskilled Labour

B. Machinery

  • Mixer Machines
  • Toothing and Racking Tools
  • Wooden straight edge, masonic spirit levels, square,1m rule line
  • Plumb

Safety Points

  • While doing job at height, person must anchor his safety belt with "LIFELINE"
  • No. of bricks to be shifted by winch at one time to be decided comparing with winch cage capacity.
  • Deflection in props or shuttering material/Avoid excessive stacking on shuttering material.

Work Procedures

Brick Stacking

As per specific job requirement the required quantity of bricks conforming to technical specifications shall be stacked near work site. The following also need to be complied with;

  • Easy access for stacking & retrieval
  • Stacking away from road, shoulders, walkways etc., so that no encroachment is made in access path for others
  • The area is clean & dry and remains so during the required stacking period.
  • Area is adequately drained.

Soaking of Bricks

  • Bricks shall be soaked in water before use for a period for just penetrates the whole depth of the bricks. Alternatively bricks may be adequately soaked in stacks by profusely spraying with clean water at regular intervals for a period not less than six hours

Mortar

Mortar for Brickwork having one or more brick thickness shall be 1Part of cement: 6 Part of Sand by volume or as specified in Drawings/Technical specification. Mortar for half brick thick walls

  • Shall be 1 Part of cement: 4 Part of Sand by volume or as specified in drawings or technical specifications Cement and sand shall be thoroughly mixed dry in a mechanical mixer and water shall then be added to obtain a mortar of the consistency of a stiff paste. Measuring box shall be used for control over the mix proportion. Hand mixing may be allowed by the Engineer on clean approve platform in special case only.

Laying

  • Bricks shall be laid in English Bond unless otherwise specified. For brick work in half brick wall, bricks shall be laid in stretcher bond. Half or cut bricks shall not be used except as closer where necessary to complete the bond. Closers in such cases, shall be cut to the required size and used near the ends of the wall. Header bond shall be used preferably in all courses in curved plan for ensuring better alignment.
  • All loose materials, dirt and set lumps of mortar which may be lying over the surface on which brick work is to be freshly started, shall be removed with a wire brush and surface wetted. Bricks shall be laid on a full bed of mortar, when lying, each brick shall, be properly bedded and set in position by gently pressing with the handle of a trowel. It’s inside face shall be buttered with mortar before the next brick is laid and pressed against it. Joints shall be fully filled and packed with mortar such that no hollow space is left inside the joints.
  • The walls shall be taken up truly in plumb or true to the required batter where specified. All courses shall be laid truly horizontal and all vertical joints shall be truly vertical. Vertical joints in the alternate course shall come directly one over the other. A set of tools comprising of wooden straight edge, masonic spirit levels, square, 1 meter rule line and plumb shall be kept on the site of work for every 3 masons for proper check during the progress of work.
  • Care shall be taken during construction that edges of jambs, sills and projections are not damaged in case of rain. New built work shall be covered with gunny bags or tarpaulin so as to prevent the mortar from being washed away. Damage, if any, shall be made good to the satisfaction of the Engineer-in-Charge.
  • Vertical reinforcement in the form of bars (MS or high strength deformed bars or thermo mechanically treated bars as per direction of Engineer-in-Charge)), considered necessary at the corners and junction of walls and jamb opening doors, windows etc. shall be encased with cement mortar not leaner than 1:4 (1 cement : 4 coarse sand), or cement concrete mix as specified. The reinforcement shall be suitably tied, properly embedded in the foundation and at roof level. The dia. of bars shall not be less than 8 mm and concrete grade shall be minimum 1:2:4 (1 cement: 2 coarse sand: 4graded stone aggregate 20 mm nominal size) or as specified by Engineer-In Charge.

Work of cutting chases

Wherever required chases to be made in the walls for housing GI. pipe or any other fixtures shall be carried out in various locations as per guidelines given.

Joints- The thickness of all types of joints including brick wall joints and cross joints shall be such that four Course and three joints taken consecutively shall measure as follows:

  • In case of modular bricks conforming to IS 1077 specification for common burnt clay buildings Bricks, equal to 39 cm.
  • In case of non-modular bricks, it shall be equal to 31 cm

Note:

  • Specified thickness of joints shall be of 1 cm. Deviation from the specified thickness of all joints shall not exceed one-fifth of specified thickness.

Finishing of Joints

  • The face of brick work may be finished flush or by pointing. In flush finishing either the face joints of the mortar shall be worked out while still green to give a finished surface flush with the face of the brick work or the joints shall be squarely raked out to a depth of 1 cm while the mortar is still green for subsequently plastering. The faces of brick work shall be cleaned with wire brush so as to remove any splashes of mortar during the course of raising the brick work. In pointing, the joints shall be squarely raked out to a depth of 1.5 cm while the mortar is still green and raked joints shall be brushed to remove dust and loose particles and well wetted, and shall be later refilled with mortar to give ruled finish. Some such finishes are ‘flush’, ‘weathered’, ruled, etc.

Curing

  • The brick work shall be constantly kept moist on all faces for a minimum period of 7 days. Brickwork done during the day shall be suitably marked indicating the date on which the work is done so as to keep a watch on the curing period.

Precautions

  • All joints properly filled and pointed as per specification.
  • No of Course restricted as per specifications.
  • Toothing at joints of main wall with partitions checked.

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