Content

1. Introduction

2. Reference

3. Materials

4. Mortar / Concrete

5. Setting Out

6. Stiffener Columns & Beams

7. Use of Mortar

8. Brick Wall Construction

9. Curing

10. Inspection for Construction

1. Introduction

This method statement will be established for the construction of brick masonry walls and the related work which are to be completed with brick walls. Brick masonry walls in the scope of work are 225mm thick & 112.5mm thick brick walls. These brick walls will be built with 1:5 cement sand mixture

2. References

(a) Architectural specification Drawings and General Notes.

(b) Approved shop Drawings

3. Material

3.1 Bricks

Approved type shall be used.

(a) Approximate size of bricks.

Length 210 mm

Width 95 mm

Height 55 mm

(b) Tolerance + 10 mm

3.2 Cement

Material

Cement : Ordinary Portland cement (Any approved brand of cement by Engineer)

3.3 Sand (i) Natural sand free form organic matters.

(ii) The clay plus fine silt content shall not exceed 5% by weight

and 15% by volume.

3.4 Water

Water shall be fresh, clean and free from harmful matters and dissolved salts.

3.5 Brick mesh

4. Mortar / Concrete

4.1 Mortar

Mortar shall be mixed in mechanical mixers or manually as required. Each batch shall be proportioned by volume.

4.2 Proportion of Mortar

Mortar shall be two (1) parts of Cement to Five (5) parts of sand.

4.3 Concrete

Type C 20 for reinforcement concrete for stiffener Beams and Columns

5. Setting out

(i) Surface of the concrete shall be thoroughly cleaned before marking lines on the floor, wall, column, etc.

(ii) All main grid lines shall be marked according to approved drawings.

(iii) 1.00 m off line from the grid line and name it.

(iv) 200 mm off line from the brick face on either side of wall.

(v) Mark centerline of door opening.

(vi) Mark structural opening of the door

(vii) Mark concrete column, stud, concrete wall etc. along the wall line.

6. Stiffener Columns, Beams and Concrete Ledges

(i) Stiffener Beams/Columns shall be required to wall areas greater than 9m2 which are unsupported by brick walls, concrete walls or columns.(Stiffener columns shall be generally placed in 3m intervals)

(ii) Approved Flexible Sealant shall be provided at the interface of concrete and brick flexible joints.

(iii) Concrete Ledges shall be provided for Bathroom areas for Water Proofing works and it will be measured separately and will be claimed in concrete items.

7. Use of Mortar / Cleaning

7.1 Use of Mortar

(i) Timber trays will be used place to place mortar mix at every working areas.

(ii) Mortar which has commenced to set will not allowed to use or mix with any other mortar.

(iii) Water will be added to the mortar to achieve acceptable workability and strength.

7.2 Cleaning

(i) Cleaning will be done daily, before ends of day work.

8. Brick wall Construction

(i) Laying pattern shall be English bond

(ii) The bricks shall be wetted with water before use on works. Bad quality bricks & over burnt bricks shall not be used.

(iii) The top of walls left off shall be wetted before the work is re-commenced.

(iv) The thickness of mortar joint shall not exceed 10 mm.

(v) Every third course shall be leveled.

(vi) Lay the Brick Mesh over the 7^th Brick layer and at every subsequent 14^thlayerof brick wall.

(vii) Fix the Brick Tie if the brick wall connects with the structural wall or Column over 7^th layer and at every subsequent 14^thlayerof brick wall.

(viii) Continue with brickwork by inserting brick tie and brick mesh as mentioned above.

(ix) The walls shall be carried up in a uniform manner no one portion being raised more than 1m above another at any time.

(x) All constructed masonry exposed to the sun shall be kept damp immediately after completion and also during the following day.

(xi) Openings for doors, windows, etc shall be properly marked out and left unbuilt until the frames have been fixed position.

(xii) Anchors provided for stiffeners columns and the perimeter brick walls

(xiii) All non-load Bearing walls shall be isolated from the main structure by providing a 10mm clearance between the wall and the sides and slabs over

9. Curing

Curing will be carried out 24 hours after completion of brick masonry.

10. Inspection for Construction

All kinds of inspection for construction shall be carried out by the site Engineers along with Engineers representative and QA/ QC Engineer of SANKEN as per the standards and specifications.

However, prior information shall be given to Consultant representative at site to proceed necessary checking’s periodically & make final comments.

The inspection shall be carried out while progressing of the work & approval shall be granted without affecting to the progress of the work.