APPLICATION GUIDELINES

[vc_row][vc_column width=”1/3″][vc_custom_heading text=”STORAGE & HANDLING” font_container=”tag:h3|text_align:left” google_fonts=”font_family:Arimo%3Aregular%2Citalic%2C700%2C700italic|font_style:700%20bold%20regular%3A700%3Anormal”][vc_single_image image=”6288″ img_size=”350X150″][vc_column_text]

The blocks shall be stored in such a way as to avoid any contact with moisture on the site. They shall be stock piled on planks or other supports free from contact with the ground and covered to protect against wetting.

[/vc_column_text][vc_custom_heading text=”PREPARATION OF BLOCKS FOR USAGE” font_container=”tag:h3|text_align:left” google_fonts=”font_family:Arimo%3Aregular%2Citalic%2C700%2C700italic|font_style:700%20bold%20regular%3A700%3Anormal”][vc_single_image image=”6301″ img_size=”350X150″][vc_column_text]

These blocks need not be wetted before or during the laying in the walls; in case the climatic condition so required, the top and the sides of the blocks may be slightly moistened so as to prevent absorption of water from the mortar and ensure the development of the required bond with the mortar

[/vc_column_text][vc_custom_heading text=”LAYING OF BLOCKS” font_container=”tag:h3|text_align:left” google_fonts=”font_family:Arimo%3Aregular%2Citalic%2C700%2C700italic|font_style:700%20bold%20regular%3A700%3Anormal”][vc_single_image image=”6293″ img_size=”350X150″][vc_column_text]

The construction of walls may be started either at the corners first or started from one end proceeding in the other direction. If the corners of the wall are built first, they shall be built four or five courses higher than the center of the wall. Set the first corner block in the sand -cement mortar and adjust the joint as needed. To achieve the required height, lower or raise the block by tapping down with a rubber mallet or by adding additional mortar beneath. Set the second corner block adding thin-bed mortar to the head joint with the notched trowel. Repeat subsequent steps for each corner using a builder’s level to maintain an equal elevation. Triple check each lead corner in all three planes.

To ensure satisfactory bond, mortar shall not be spread too far ahead of actual laying of the block or it will stiffen and loose its plasticity. After building the lead corners, pull a string between corners to complete the leveling course. For bed joint only sand-cement mortar should be used.

[/vc_column_text][vc_custom_heading text=”HOW TO LAY SERVICE LINE” font_container=”tag:h3|text_align:left” google_fonts=”font_family:Arimo%3Aregular%2Citalic%2C700%2C700italic|font_style:700%20bold%20regular%3A700%3Anormal”][vc_single_image image=”6296″ img_size=”350X150″][vc_column_text]

For electrical concealing or piping work, block wall can be chased using hand/ cutting tool/ electric router after 14 days after the wall has been constructed. Depth of vertical chases shall be limited to one- third of the wall thickness and horizontal chases to one- sixth of the wall thickness. Holes in block wall can be made with a standard hand or electric drill. Chase to be grooved before plaster of wall and use electric wallchasing machine for zero vibration & good quality work, do not chase on joints.

The chases shall be refilled with leaner mortar and chicken mesh shall be applied on that area and cured.

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Using control lines lay out wall lines on building slab.

[/vc_column_text][vc_custom_heading text=”CUTTING THE BLOCKS” font_container=”tag:h3|text_align:left” google_fonts=”font_family:Arimo%3Aregular%2Citalic%2C700%2C700italic|font_style:700%20bold%20regular%3A700%3Anormal”][vc_single_image image=”6178″ img_size=”350X150″][vc_column_text]

Do not use tools like hammer, chisel etc. to cut the blocks. Use a carbide tipped saw to cut the AAC blocks smoothly and accurately.

[/vc_column_text][vc_custom_heading text=”LEVELING THE FIRST BED COURSE” font_container=”tag:h3|text_align:left” google_fonts=”font_family:Arimo%3Aregular%2Citalic%2C700%2C700italic|font_style:700%20bold%20regular%3A700%3Anormal”][vc_single_image image=”6291″ img_size=”350X150″][vc_column_text]

For Walls above ground floor, provide bed cement sand mortar 1:6, before starting the first course of blocks. Please check the height of masonry and distribute the same along the joints, if the gap is more same can be adjusted in bed mortar. Do not use thin-bed mortar or large grain mortar for the leveling bed joint.

[/vc_column_text][vc_custom_heading text=”HOW TO INTERSECT WALL” font_container=”tag:h3|text_align:left” google_fonts=”font_family:Arimo%3Aregular%2Citalic%2C700%2C700italic|font_style:700%20bold%20regular%3A700%3Anormal”][vc_single_image image=”6294″ img_size=”350X150″][vc_column_text]

When two load bearing walls meet or intersect and the courses are to be laid up at the same time, a true masonry bond between at least 50 percent of the units at the intersection is necessary. When such intersecting bearing walls are laid up separately, pockets with 200 mm maximum vertical spacing shall be left in the first wall laid. The corresponding course of the second wall shall be built into these pockets.

[/vc_column_text][vc_custom_heading text=”PROVISION FOR DOOR & WINDOW FRAME” font_container=”tag:h3|text_align:left” google_fonts=”font_family:Arimo%3Aregular%2Citalic%2C700%2C700italic|font_style:700%20bold%20regular%3A700%3Anormal”][vc_single_image image=”6298″ img_size=”350X150″][vc_column_text]

Door and window frames shall be to the surrounding masonry either by conventional method or with 200mm flooring nails with screwed ends fixed directly into the block after the frame has been wedged into the opening at every nailing position. The number of nails to give adequate stability will be dependent on the dimensions of the frames. The nails should be spaced at maximum 400 mm and the first nail should not be farther than 200mm from a corner

[/vc_column_text][vc_custom_heading text=”KEY NOTES” font_container=”tag:h3|text_align:left” google_fonts=”font_family:Arimo%3Aregular%2Citalic%2C700%2C700italic|font_style:700%20bold%20regular%3A700%3Anormal”][vc_column_text]

Leveling course must be level and plumb. Do not proceed to subsequent courses until leveling course has set sufficiently

Blocks must be installed in a running bond beam at suitable intervals .

All head and bed joints must be solid with approved AAC thin-bed mortar for full adhesion. Do not tooth.

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The blocks shall be embedded with a mortar, the strength of which is relatively lower than that of the mix used for making blocks in  order to avoid the formation of cracks. A 1:6 cement-sand mortar may be used.Keep mortar thickness  limited to 10 to 12 mm in cement sand mortar & 3 to 4 mm in ready mix mortar.

[/vc_column_text][vc_custom_heading text=”HOW TO USE ADHESIVE” font_container=”tag:h3|text_align:left” google_fonts=”font_family:Arimo%3Aregular%2Citalic%2C700%2C700italic|font_style:700%20bold%20regular%3A700%3Anormal”][vc_single_image image=”6292″ img_size=”350X150″][vc_column_text]

Gradually add 3 parts of powder to 1 part of water (by volume) and mix it for 5-10 minutes to achieve smooth paste consistency. After mixing allow the paste to stand for 2 – 3 minutes to mature and again mix it for paste consistency. Do not attempt to extend the pot life by adding more water to the mixed adhesive. The consistency of the mixed thin-bed mortar should be such that it flows easily through the teeth of the notched trowel leaving the shape of the teeth in the mortar bed. Thin-bed mortar droppings should not be used.

[/vc_column_text][vc_custom_heading text=”INSTALL BOND BEAMS ARE REQUIRED” font_container=”tag:h3|text_align:left” google_fonts=”font_family:Arimo%3Aregular%2Citalic%2C700%2C700italic|font_style:700%20bold%20regular%3A700%3Anormal”][vc_single_image image=”6295″ img_size=”350X150″][vc_column_text]

Bond beams, the use of which as structural members also serve as a means of crack control. Provide nominal bond beams of thickness 80 mm with a minimum reinforcement of two 8 mm diameter mild steel bars or two 6 mm stirrups at 200 mm c/c and filled with M 20 grade of concrete. The reinforcement shall be embedded in horizontal joints at intervals of 900 to 1200 mm depending upon panel length, height, and the number and type of wall openings. If the length of wall exceeds more than 3 m, vertical reinforcement should be provided at suitable intervals.

[/vc_column_text][vc_custom_heading text=”PARAPET WALLS” font_container=”tag:h3|text_align:left” google_fonts=”font_family:Arimo%3Aregular%2Citalic%2C700%2C700italic|font_style:700%20bold%20regular%3A700%3Anormal”][vc_single_image image=”6297″ img_size=”350X150″][vc_column_text]

Unless adequately braced at intervals not exceeding 3 m, the height of the wall shall be limited to five times its thickness.

[/vc_column_text][vc_custom_heading text=”PLASTER” font_container=”tag:h3|text_align:left” google_fonts=”font_family:Arimo%3Aregular%2Citalic%2C700%2C700italic|font_style:700%20bold%20regular%3A700%3Anormal”][vc_single_image image=”6170″ img_size=”350X150″][vc_column_text]

Plaster thickness required Internal: 6 to 12mm, External 12 to 15mm. Plastering can be done at construction site as per standard masonry practice generally after 7 days, conducting and chiseling can be done generally after 14 days.

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