Common use of Laying Clause in Contracts

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 at the end of any day's work. Before opening to traffic, new layer shall be linked up with the existing one by means of a chamfered edge with a slope not exceeding 8%. Before carrying on the layer this chamfered edge shall be cut away.

Laying. The bituminous concrete Brick work shall be laid in English bond, unless otherwise specified. Half or cut bricks shall not be used except where necessary to complete the bond. Closures in such cases, shall be cut to the required size and used near the ends of the walls. In case of exposed brick work, only selected bricks of the specified class shall be used for the face work. A layer of mortar shall be spread on full width over a suitable length to the lower course. Each brick shall be properly bedded and set home (in position) by gently tapping with handle of trowel or wooden mallet. Its inside faces shall be buttered with mortar before the next brick is laid when and pressed against it. On completion of a course all vertical joints shall be fully filled from the base is wet, when there are pools and during rainfalltop with mortar. The surface walls of the structure shall be raised truly to plumb. All courses shall be laid truly horizontal and all vertical joints shall be truly vertical. All vertical joints in alternate courses shall come directly over the other. The thickness of the brick courses shall be kept thoroughly clean, free from dust uniform and foreign matter, using mechanical broom or blown off by compressed airfor this purpose wooden straight edge with graduations indicating thickness of each course including joint shall be used. The bituminous concrete binder course as well as height of window xxxxx, bottom of lintels and other such important points in the wearing course walls shall be placed in one layer, except where reshaping work is providedmarked on the graduated straight edge. The temperature wall faces front and back, more than one brick thick shall be kept in proper plane. All the connected brick work shall be more than one meter below the rest of the mix at delivery work. In the opinion of the plant Engineer-In-Charge if it is not possible, the work shall be approximately 140 C. The bituminous concrete raked back according to bond (and not toothed at an angle not steeper than 45. In one day not more than one meter high brick work should be done. All the iron fixtures, outlets of water, hold fasts of doors and windows, which are required to be built into the walls 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 embedded in order to produce a compacted layer with the required thickness mortar or cement concrete as shown on the Drawings or specified in their correct position, as directed by the Engineer-In-Charge, as the work proceeds. During laying The flue of the screed unit chimney shall be blocked; in other words adjustment of plastered with mud, cowdung mortar ( 3 mud: 1 xxxxx) as the thickness during laying using the so-called floating action of the screed unit shall not be authorisedwork proceeds. The mixed material No extra payment 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 at the end of any day's work. Before opening to traffic, new layer shall be linked up with the existing one by means of a chamfered edge with a slope not exceeding 8%. Before carrying on the layer this chamfered edge shall be cut awaydone for it.

Laying. The bituminous concrete All the best-shaped uniformly colored bricks shall not be picked out and used for face work without any extra payment to the contractor. All bricks work shall be constructed in English bond and shall follow the type bond junctions etc. Brickwork shall be laid when the base is wet, when there are pools and during rainfallin English bond with mortar in proportion to 4:1 i.e. (4 sand:1 cement) unless otherwise specified. The surface No brickwork shall be kept thoroughly clean, free from dust carried out more than one scaffolding height of 1.5 meter in any stage. Brickwork in foundation and foreign matter, using mechanical broom or blown off by compressed air. The bituminous concrete binder course as well as the wearing course superstructure not in contact with water shall be placed in one layer, except where reshaping work is providedprovided with 19 mm and 12-mm. The temperature of the mix thick plaster at delivery of the plant inside and outside faces respectively. Cement and sand material ratio shall be approximately 140 C. The bituminous concrete 1:6 for structures not in contact with water and 1:4 with 20 mm. thick plaster cement punning in the waterside face and 12 mm. thick plastering prop at the other face 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 provided all courses unless other wise specified or as directed ordered by the Engineer. During laying the screed unit , shall be blocked; truly horizontal and the walls shall be taken up truly plumb. Mortar joints shall never exceed 10 mm in other words adjustment of the thickness during laying using the so-called floating action of the screed unit and this thickness shall not be authoriseduniform throughout. Vertical joints in alternate courses shall come directly over one another. 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 mmracked out not less than 12mm deep when the mortar is green so as to provide proper key for the plaster or pointing to be done. At transverse Each face brick shall be set with both bed and vertical joints between existing compacted asphalt and newly laid asphalt, the edge quite full of motor. No damaged or broken brick shall be used in any part of the existing asphalt along work except such as may be cut to size for closing the joint course. Closers shall be neatly cut away clean out to size an indicated 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 English bond and 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 at situated near the end of any day's workwalls. Before opening to traffic, new layer The masonry shall be linked carried up with regularly and no step shall be allowed more than 60cm. where the existing masonry of one by means of a chamfered edge with a slope part has to be delayed, the work must be raked back at an angle not exceeding 8%45º Angles and Junctions. Before carrying At all angles forming the junction of walls, the brick shall at each alternate course be carried into their respective walls so as to thoroughly unite the work with English bond. Care shall be taken that when a brick is left out to allow support for the scaffold pole on the layer this chamfered edge wall face, such brick shall always be a header and that not more than one header for each pole shall be cut awayleft out. Scaffolding: Proper scaffolding shall be provided whenever necessary having two sets of vertical supports and shall be subject to the approval of the Engineer; who may order the contractor to alter or strengthen the scaffolding if he considers it necessary, without thus becoming responsible either for the safety of the work or workmen or for any additional payment. Holes shall be made good by bricks to match the face work when scaffolding is removed.

Laying. The bituminous concrete shall not be laid when All the base is wet, when there are pools and during rainfall. The surface masonry work shall be kept thoroughly cleancarried out to specified dimension, free from dust lines 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 levels indicated on the Drawings drawings or as directed by the Engineer-In-Charge and a good bond shall be provided throughout the work both longitudinally and transversely. Double scaffolding of adequate strength shall be provided for all types of loads likely to come on them during construction. No holes allowed in masonry for scaffolding. During laying rains and frosty weather, the screed unit work shall be blocked; carefully covered so as to prevent any mortar being washed away. Any anchors, wall plugs, accessories, flashings and other items required to be built in other words adjustment with masonry shall be provided in their correct position as the masonry work progresses. Before new work is started, all loose mortar shall be removed and the exposed joints shall be thoroughly cleaned before laying new work. Every brick shall be thoroughly soaked in water before using in work. Before starting the brick masonry the concrete surfaces e.g. plinth beams, columns, slabs, chajjas, lofts etc. shall be thoroughly hacked and washed to remove all mud, dirt, loose particles etc. and a thin coat of cement slurry shall be applied over concrete surfaces when fresh masonry is to be started on or against old masonry, the surface of the thickness during laying using the so-called floating action old masonry shall be thoroughly cleaned and washed to remove all xxxx deposits loose mortar mud and dirt etc. Brickwork shall be laid in English Bond with frog upwards unless otherwise specified. In exposed brickwork, selected bricks of the screed unit specified class shall be used for the face work. No half or quarter brick shall be used except as closures. Nor more than ten courses shall be raised in a day and no part of the work shall be raised more than 1 m. above another at any time. The size of the brick shall be 22.5 x 11.5 x 7.5 cm. unless otherwise specified; but tolerance upto ± 3mm. in each direction shall be permitted, However, bricks conforming in size to IS 1077 could be used. Bricks shall be provided with frogs. Only full size bricks shall be used for masonry work. Brick bats shall be used only with permission of the Engineer-In-Charge to make up required wall length or for bonding. Sample bricks shall be submitted to the Engineer-In-Charge for approval and brick supplied shall confirm to approved samples. If demanded by Engineer-In-Charge, brick sample shall be tested as per IS 3495 by the Contractor at no extra cost to Employer. Brick rejected by Engineer-In-Charge shall be removed from the site of works within 24 hours. Each brick shall be set with both bed and vertical joints filled with mortar as per IS 2250. Joints shall not be authorisedless than 6 mm. The mixed material shall and not more than 10 mm. in thickness and are to be supplied continuously to the machine full of mortar, close, well finished and laid as soon as possible after deliveryneatly struck. The speed of paver All joints shall be adjusted to that their final position in the wall while the mortar is still soft and plastic. All joints shall be raked out by raking tools when mortar is still green to a depth of 12 mm. to ensure good key to plaster or pointing. Where plastering or pointing is not required to be done, the asphalt plant joints shall be uniform in thickness, struck flush and hauling capacities so that finished at the paving operation is maintained as continuously as possible during the worktime of laying. The temperatures face of mixes measured in the receiving xxxxxx of the asphalt paver shall not be lower than 130 C. Mixes which have a lower temperature brick work shall be discardedcleaned daily and all mortar droppings removed. Transverse joints in the wearing The surface of each course shall be offset at least 500 mm from those thoroughly cleaned of all dirt before another course is laid on top. If the mortar in the base course. Longitudinal lower course has begun to set, the joints shall be offset at least 150 raked out to a depth of 12 mm. At transverse joints between existing compacted asphalt and newly laid asphaltbefore another course is laid. Miscellaneous inserts in masonry e.g. sleeves, the edge of the existing asphalt along the joint wall ties, anchors, conduits, structural steel, steel lintels etc. shall be neatly cut away in straight lines over a sufficient width to ensure that installed by the full specified thickness of new asphalt is placedContractor. The exposed edge in the existing work shall, if directed, be painted with hot bitumen or emulsion immediately in advance of placing the new workOpenings etc. 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 provided as shown on the required rate by means of a special equipment (lateral wheel)drawings. They Chases, pockets etc. shall be painted with hot bitumen or emulsionprovided as shown on the drawing to receive windows, louvers, doorframes, circular openings for exhaust fans etc. The Contractor Curing shall organise his work so that there are no exposed longitudinal joints left at constantly keep the end brick masonry moist on all faces for a minimum period of any day's workseven days. Before opening to traffic, new layer Brickwork done during the day shall be linked up with suitably marked indicating the existing one by means of date on which the work is done so as to keep a chamfered edge with a slope not exceeding 8%. Before carrying watch on the layer this chamfered edge shall be cut awaycuring period.