Workmanship. For All Works below ground level the masonry shall be random rubble uncoursed with ordinary quarry dressed stones for the hearting and selected quarry dressed stones for the facing. For all works above ground level and in superstructure the masonry shall be random rubble uncoursed, well bonded, faced with hammer dressed stones with squared quoins at corners. The bushings on the face shall not be more than 40 mm on an exposed face and on the face to be plastered it shall not project by more than 12 mm nor shall it have depressions more than 10 mm from the average wall surface. Face stones shall extend back sufficiently and bond well with the masonry. The depth of stone from the face of the wall inwards shall not be less than the height or breadth at the face. The length of the stone shall not exceed three times the height and the breadth on base shall not be greater than three-fourths the thickness of wall nor less than 150 mm. The height of stone may be upto a maximum of 300 mm. Face stones or hearting stones shall not be less than 150 mm in any direction. Chips and spalls shall be used wherever necessary to avoid thick mortar joints and to ensure that no hollow spaces are left in the masonry. The use of chips and spalls in the hearting shall not exceed 20 percent of the quantity of stone masonry. Spalls and chips shall not be used on the face of the wall and below hearting stones to bring them to the level of face stones. The maximum thickness of joints shall not exceed 20 mm. All joints shall be completely filled with mortar. When plastering or pointing is not required to be done, the joints shall be struck flush and finished as the work proceeds. Otherwise, the joints shall be raked to a minimum depth of 20 mm by a raking tool during the progress of the work while the mortar is still green. Through or bond stones shall be provided in walls upto 600 mm thick and in case of walls above 600 mm thickness, a set of two or more bond stones overlapping each other by at least 150 mm shall be provided in a line from face to back. In case of highly absorbent types of stones (porous lime stone and sand stone, etc.) the bond stone shall extend about two-thirds into the wall and a set of two or more bond stones overlapping each other by at least 150 mm shall be provided. Each bond stone or a set of bond stones shall be provided for every 0.5 sq.m of wall surface. All stones shall be sufficiently wetted before laying to prevent absorption of water from the mortar. Al...
Workmanship. 2.1. The work shall consist of furnishing and placing reinforcement to the shape and dimensions shown as on the drawings or as directed.
2.2. Steel shall be clean and free from rust and loose mill scale at the time of fixing in position and subsequent concreting.
2.3. Reinforcing steel shall conform accurate to the dimensions given in the bar bending schedules shown an relevant drawings. Bars shall be bent cold to specified shape and dimensions or as directed, using a proper bar bender, operated by hand or power to attain proper radius of bends. Bars shall not be bent or straightened in a manner that will the material. Bars bent during transport or, handing shall be straightened before being used on the work. They shall not be heated to facilitate bending. Unless otherwise specified, a 'U' type hook at the end of each bar shall invariably be provided to main reinforcement. The radius of the bend shall not be less then twice the diameter of circle having an equivalent effective area. The hooks shall be suitably encased to prevent any splitting of the concrete.
2.4. All the reinforcement bars shall be accurately placed in exact position shown on the drawings, and shall be securely held in position during placing of concrete by annealed binding wire not less than 1 mm in size and by using stay blocks or metal chair spacers, metal hangers, supporting wires or other approved. devices at sufficiently close intervals, Bars shall not be allowed to sag between supports nor displaced during concreting or any other operations of the work. All devices used for positioning shall be of non-corrodible material. Wooden and metal supports shall not extend to the surface of concrete, except where shown on drawings. Placing bars on, layers of freshly laid concrete as the work progresses fro adjusting bar spacing shall not be allowed. Pieces of broken stone or brick and wooden blocks shall not be used. Layers of bars shall be separated by spacer bars, precast mortar bricks. or their approved devices. Reinforcement after being placed in position shall be maintained in a clean condition until completely embedded in concrete. Special care shall be exercised to prevent any displacement of reinforcement in concrete already placed: To prevent reinforcement form corrosion, concrete cover shall be provided as indicated on drawings. All the bars producing from concrete and to which other bars are to be spliced and which are, likely to be exposed for a period exceeding 10 days shall be...
Workmanship. The work shall be carried out in the coats. The backing coat (base coat) shall be 12 mm thick in C.M. 1:3. The relevant specification is below:
Workmanship. It shall be of C.C. 1: 2: 4 (1 Cement: 2 Coarse Sand: 4 Graded stone aggregate of 6 mm nominal size), reinforced with 1.6 mm Dia mild steel wire unless otherwise specified. The thickness of Jali shall be as specified in the item. The Jali shall be set in position true to line and level before the jambs sills and soffits of the opening are plastered. It shall then be properly cemented with CM 1: 3 and rechecked for the levels. Finally, the jambs, sills and soffits shall be plastered gripping the Jali uniformly on all sides. The rate shall be for a unit of one square meter. Providing and fixing uPVC Pipe Schedule-40 of any approved brand and quality - 15 mm / 25 mm / 50 mm / 100 mm dia The contractor shall have to supply UPVC pipe of size 15 mm / 25 mm / 50 mm dia as per the requirement and of approved quality as approved by the engineer in charge. Subsequently the fixing of the same shall have to be carried out with all required material etc. and complete the whole work as per the requirement and to the satisfaction of engineer in charge. The rate shall be for a unit of One running meter basis. Item No.23: Providing and fixing Brass Wheel valve of 25 mm / 50 mm dia fixing etc complete of I.S.I. mark etc complete. The brass check or non return valve shall be fully cleared of all foreign matter before fixing. The fixing of valve shall be done by means of bolts nuts and 3 mm. rubber insertions with flanges of spigot and socketed till pieces, drilled to the same specification as in case of socket and spigot and with flanges in case of flanged pipes. The jointing small be done leak proof. The ISI Marked Brass full way wheel valve of 25 mm dia shall have to fitted as per instructions of engineer-in-charge. The rate for this work will paid per Number basis. Item No.24: Trusted brass cock, stop cock etc. 15mm dia Screw down bolt type fitting with fixing. The Brass Cock Screw down bolt type of 15 mm dia is to be provided and all the necessary fitting and fixing with required material as per the instructions of engineer in charge is to be carried out and complete accordingly. The rate shall be for a unit of one number. Item No.25: Providing & fixing PVC Nahni trap of 7.6 cm complete Providing and fixing U-PVC 3.5" thick of prince/supreme/jain make nanhi trap at all floor levels, of the following nominal diameter of self cleaning design with C.I. screwed down or hinged grating including cost of cutting and making good the walls and floors 100 mm. inlet and 50 mm outle...