Laying. (i) All cast iron pipes and fittings shall be joined with best quality soft pig lead, which shall be free from impurities. In wet trenches joints shall be made from lead wool. Nothing extra shall be paid for lead wool joints. Depth of the pig lead and weight for joints shall be as given in this section above. · The spigot of pipe fittings shall be centered in the adjoining socket by caulking. Sufficiently turns of tarred xxxxxx will be given to leave unfilled depth of socket for depth of 45mm when the xxxxxx has been caulked tightly barrel and against the face of the socket. Molten pig lead shall than be poured to fill the remainder of the socket. The lead shall then be solidly caulked with suitable tools and hammer weighting not. · For lead wool joints the socket shall be caulked with xxxxxx xxxxxx, as explained above. The lead wool shall be inserted into the sockets and tightly caulked home skein with suitable tools and hammer of not less than 2 kg weight until joint is filled. Testing: All cast iron pipes for drainage shall be tested to a hydraulic test of 3- meter head. Test for straightness shall be same as for stoneware pipe. A test register shall be maintained which shall be signed and dated by the Concessionaire, and representative of the Independent Engineer.
Laying. The bituminous concrete shall not be laid when the base is wet, when there are pools and during rainfall. The surface shall be kept thoroughly clean, free from dust and foreign matter, using mechanical broom or blown off by compressed air. The bituminous concrete binder course as well as the wearing course shall be placed in one layer, except where reshaping work is provided. The temperature of the mix at delivery of the plant shall be approximately 140 C. The bituminous concrete shall be spread and tamped by a self-propelled paver operated by a fully- trained and experienced man. The paver shall be capable of laying to a width of 4 meters. The screed unit shall be adjusted before laying is started in order to produce a compacted layer with the required thickness as shown on the Drawings or as directed by the Engineer. During laying the screed unit shall be blocked; in other words adjustment of the thickness during laying using the so-called floating action of the screed unit shall not be authorised. The mixed material shall be supplied continuously to the machine and laid as soon as possible after delivery. The speed of paver shall be adjusted to that of the asphalt plant and hauling capacities so that the paving operation is maintained as continuously as possible during the work. The temperatures of mixes measured in the receiving xxxxxx of the asphalt paver shall not be lower than 130 C. Mixes which have a lower temperature shall be discarded. Transverse joints in the wearing course shall be offset at least 500 mm from those in the base course. Longitudinal joints shall be offset at least 150 mm. At transverse joints between existing compacted asphalt and newly laid asphalt, the edge of the existing asphalt along the joint shall be neatly cut away in straight lines over a sufficient width to ensure that the full specified thickness of new asphalt is placed. The exposed edge in the existing work shall, if directed, be painted with hot bitumen or emulsion immediately in advance of placing the new work. When the asphalt layers are laid in half widths, the longitudinal joints between them shall, if directed, be treated similarly to the transverse joints. Cold joints shall be neatly cut away in straight lines except that they have been compacted to the required rate by means of a special equipment (lateral wheel). They shall be painted with hot bitumen or emulsion. The Contractor shall organise his work so that there are no exposed longitudinal joints left a...
Laying. The stone shall be laid by hand closely together. The stone shall be carefully bedded and tightly wedged with suitable spalls. The base of the stone shall alternate with the apex in all directions or as directed by the Engineer. The layer shall be proof rolled with a loaded scrapper or truck with a minimum axle load of 8 tonnes in the presence of the Engineer who shall approve of its stability before compaction.
Laying. No turf shall be laid until the soil preparation has been satisfactorily completed by being brought to an even tilth and firmness. Turves from the stack shall be wheeled to turf layers on planks laid closely side by side. Adequate timber planks shall be used to support operatives and xxxxxxx, and provide access. The turves shall be laid in consecutive rows with broken joints (stretcher bond), closely butted and to the correct levels. The turf shall be laid off planks working over turves previously laid. Where necessary, the turves shall be lightly and evenly firmed with wooden beaters, the bottom of the beaters being frequently scraped clean of accumulated soil or mud. A dressing of finely sifted topsoil shall be applied and well brushed into the joints. Any inequalities in finished levels owing to variation in turf thickness or uneven consolidation of soil shall be adjusted by raking and/or packing fine soil under the turf. A roller shall not be used. The finished levels of the turf shall conform to the levels indicated, allowing for final settlement. Turf edges and margins shall be laid with whole
Laying. Sub grade concrete or R.C.C. slab on which marble is to be laid shall be cleaned, wetted and mopped. The bedding for the marble shall be lime mortar 1:2 ( 1 lime: 2 coarse sand) or cement mortar 1:4 (1 cement : 4 coarse sand) as mentioned in the Bills of Quantity.
Laying. The risers or steps and skirting shall be set, in grey and white cement with an admixture to match the shade of stones, and with the line of slab at an average distance of 12 mm from the wall but not less than 10 mm. If necessary, the slabs shall be held in position, by temporary X.X. xxxxx at suitable intervals. The rear of the skirting or riser slab shall be packed with cement mortar 1:3 (1cement: 3 coarse sand). The fixing hooks shall be removed after the backing mortar is set. The joint shall be very fine (almost invisible).
Laying. The surface shall be plastered with cement mortar 1:3 (1 cement: 3 coarse sand) or as specified to an average thickness of 12 mm and allowed to xxxxxx. The plastered surface shall be roughened with wire brushes or scratching as directed. The back of tiles shall be buttered with grey cement slurry and edges with white cement slurry and set in the bedding mortar. The tiles shall be lightly tamped, and corrected to proper plane and lines. Tiles shall be set in required pattern with as fine as possible butt joints. Top of dados, skirting etc. shall be truly horizontal and joints truly vertical. Where full tiles cannot be used, cut (sawn) tiles of required size shall be provided as in flooring. The joints shall be cleaned and flush pointed with white cement. The surface shall be kept wet for seven days. The finished work shall not sound hollow when tapped with wooden mallet.
Laying. The cement concrete shall be laid in alternative bays, area of each bay not exceeding 5.0 smt. and each bay to be divided by 4/6 thick glass strips/6mm thick A.C. Plain sheet or required angle/channel‟s framing as shuttering as directed. The cement concrete shall be finished with trowelling. Finishing operation shall start shortly after the compaction of concrete and the surface shall be trowelled three times at intervals so as to produce a uniform and hard surface. The water cement ratio shall be kept tight to the extent possible. The satisfactory resistance of floor to wear, depends, largely upon the care with which trowelling is carries out. The time interval allowed between successive trowelling is very important. Immediately after placing cement rendering, only just sufficient trowelling is very important. Immediately after placing cement rendering, only just sufficient trowelling shall be done to give a level surface. Excessive trowelling in the earlier stages shall be avoided, as this tends to bring a layer rich in cement to the surface. Sometimes, after the first trowelling, the duration depending upon the temperature, atmospheric conditions and the rate of set of cement used, the surface shall be retrowelled to close any pores in the surface to bring to surface and to scrape off any excess water in concrete or laitance. No dry cement shall be used directly on the surface to absorb moisture or to stiffen the mix. The final trowelling shall be done well before the concrete has become too hard but at such a time that considerable pressure is required to make any impression on the surface. If directed by the Architect, approved mineral pigment shall be added to the rendering to give desired colour and shade to the flooring, at no extra cost.
Laying. The bricks shall be laid on edge, in plain, diagonal, xxxxxxx bone bond or other pattern as specified or directed by Engineer – in – Charge. Brick shall be laid on edge on 12 mm thick mortar bed of specified proportion, and each brick shall be set by gentle tapping with hand trowel or wooden mallet, its inside faces shall be buttered with mortar, before the next brick is laid and pressed against it. On completion of a portion of flooring, the vertical joints shall be fully filled from the top with mortar. The surface during laying, shall be frequently checked with a straight edge at least 2 m. long, so as to obtain a true plane surface with the required slop. Finished work shall be cure for 10 days. In case of dry brick flooring, no curing shall be done.
Laying. The pipes shall be laid to lines, levels, and slopes indicated in the drawings or as directed by the Consulting Engineers. The handling and laying of pipes shall conform to IS:783-1985. The joint shall be done as per IS: 831985.
