Estimating and costing in civil engineering book pdf


 

Estimation and costing by dutta pdf free download estimation and costing civil engineering book. B N Datta Estimation and costing Book free. Dutta, B.N., “Estimating and Costing in Civil Engineering”, UBS Publishers & Distributors Pvt. Ltd., 2. Kohli, D.D and Kohli, R.C., “A Text Book of Estimating. Estimating and Costing is a core subject in civil engineering courses. Students need a clear understanding of this subject as it teaches them various aspects of.

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Estimating And Costing In Civil Engineering Book Pdf

Estimating and Costing in Civil Engineering Theory and Practice Book By B.N. Dutta – PDF Free Download Estimation and Costing By B.N. Dutta. Download. Download Estimating and Costing in Civil Engineering PDF book for FREE. Images for estimating and costing of civil engineering projects. Civil Engineering . quantities for detailed and abstract estimates - Approximate method of. Estimating. Detailed construction. TEXT BOOKS. 1. Estimating and Costing by B.N. Dutta, UBS publishers, , and Civil Engineering works – B.L.S.). Estimation.

Skip to main content. Log In Sign Up. Estimating Costing in Civil Engineering Basic. This also covers the rate analysis, valuation of properties and preparation of reports for estimation of various items. At the end of this course the student shall be able to estimate the material quantities, prepare a bill of quantities, make specifications and prepare tender documents. Student should also be able to prepare value estimates. Dutta, B. Kohli, D.

This helps in future reference. Detailed specifications, giving the nature and class of work and material to be used. Rates for calculating abstract of cost. These should be approved ones. Premium above C. Calculate the following items from the plan and section given in the fig.

Total length of the wall along the centre line 5. Contents L B H 1. Brick work in Cement mortar 1: Also find out the plinth area rate of the shop. Measurements Qty. Excavation for foundations Long walls 2 6. Cement Concrete in foundations 1: Reinforced Cement Concrete 1: Windows 1. Door 1 1. Damp proof course, 4 cm. C vide item 4 above 1 6. Conglomerate floor, 4 cm.

Room 1 5. But not for steel and R. C Measurements Qty. Remarks No. L B H Detail of Work 7. Deodar wood doors and windows 1 1. Cement plaster 1. Chocolate painting to Doors and windows Twice the quantity of doors and windows item 8 2x 6.

Doors and Windows: Drawing, dining and bed rooms inside of walls shall have 2 coats of distemper and other rooms shall have three coats of white washing. The outside of the wall shall have two coats of colour washing over one coat of white washing. A plinth protection 1. Plinth Area Rate Rs. Rates variable 2. Top course of the plinth shall be laid in cement motar 1: The Following portions to be built in cement mortar 1: Damp proof Course: Plinth protection1.

Plinth Area Rate: The outside surface shall be flush lime pointed. Two courses underneath the roof battens. Jambs of doors and windows. Pillars under the roof beams. Sills of windows, C. Two coats of ordinary paint. Plint Area Rate: The foundation Trenches shall be taken down to the exact width of the widest part of the foundation. The trenches where possible shall always be taken down to a few cms into good hard soil. In order to ascertain the nature of the soil, it is essential to dig trial pits at each of the four corners of the proposed site of a building before starting the construction.

The bottoms of all trenches shall be well watered and rammed. The soft and defective place shall be filled with concrete or with any other hard material as directed by the Engineer-in-charge. If, however, rocky surface is met, it shall be made as leveled as possible and any small in equalities shall be filed with concrete. Foundation in bad soil Where great depihs of bad soil are met with, such as black cotton soil, it may be necessary to resort to piles which may be of wood, steel or reinforced concrete.

Where the depth of the bad soil is not excessive, the foundations may consist of beams or concrete arches of concrete pillars. The pillars being taken down into good soil. In some cases the structure may be built on a raft of concrete reinforced with a grillage of R. It shall be laid in 15 cm layers and each layer shall be well watered and rammed with iron rammers.

Concrete in foundations Lime concrete or cement concrete shall be used in foundations to be a base for the super structure. The hydrated lime used should be thoroughly mixed with water in suitable container. It shall then be stirred into thick consistency and left undistributed for not less than 36 hours. Extra water should be drained out and putty should be bused. Similarly quick lime should be converted into putty.

The volume of lime putty shall be taken as equal to the volume of dry slaked lime. It shall be free from admixture of claly, dust or foreign matter. No un burnt bricks or bats shall, be used for grinding in to surkhi.

The gauge of the ballast shall be 2 cm to 4 cm. The stone aggregate shall consist of good hard tough broken stone, gravel or shingle of the gauge specified. It shall free from dirt, leaves or any other organic, or admixture of soft or decayed stone. Mixing And Laying The aggregate previously well soaked, shall be measured and laid on a clean platform of brickscyut or wood.

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The platform shall be sufficient size to give ample room for mixing 23 to 28 cub. Lime and surkhi shall be measured and laid on the aggregate. The whole dry and wet mix is then turned over three or four times so that it shall be thoroughly mixed concrete shall be laid slowly and gently in layer of 15 cm not thrown from a height and thoroughly consolidated with 5.

Rammers shall be used for consolidating the edges.

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Tests The consolidation of a concrete is said to be complete if a a stick end ways from a height of I m rebounds with ringing sound. If the consolidation in complete, the water shall not be absorbed in the. Curing The concrete shall be kept wet for a period of at least ten days no brick work masonry shall be laid on the concrete for at least seven days after laying.

SOIL Lonnes per sq. Ordinary earth …… 5. For unreinforced mass concrete word on ordinary work. For unreinforced mass work of cement concrete on small jobs over 15 cm minimum dimensions. For reinforced works, it shall be used where the dimension of members exceed 45cm. Unless otherwise mentioned, if will be used as under- a Unreinforced cement concrete work between 5cm minimum size.

Unless otherwise mentioned and specified, this aggregate shall be used in cement concrete works of the following description.

All cement shall be brought to the site of work in bags with the seals in tack. Fresh and from moisture. All cement shall be gauged by weight and shall be added at the mixture in whole 50kg. The sand shall be washed before using Fig. The girl shall be free from dirt, clay, leaves or other organic matter and soft or decayed stone and shall be of the gauge specified according to the nature of the work. The required quantity of water clean, rather drinking water shall then be added and the entire wet mass shall be turned over unto the homogeneous mixture of the required consistency is obtained.

It shall be laid slowly and gently in layers of 15cm not thrown from a height and thoroughly consolidated with 5. In addition to this, round steel bars are embedded to make the structure strong to take up all the tensile stresses. The measured quantity of coarse aggregate shall then be added to the mixture and whole mixed dry thoroughly.

The required quantity of water shall then be added with a Reinforcement Round steel bars as far as possible shall be used in preference to square bars. The bars shall be thoroughly cleaned of rust, scale and of coatings that might destroy or reduce bond.

The ends of all bars shall be properly hooked and bends shall be made as per drawing and design supplied.

In case of joints in reinforcement an overlay of not less than 40 diameters shall be given for tension member. The measured quantity of coarse aggregate shall than be added to the mixture and whole mixed dry thoroughly. The required quantity of water shall then be added with a rose.

After depositing, the concrete is to be ridded, vibrated, tamped or worked to ensure that no hollow places are left. Forms shall be sufficiently water right to prevent leakage of mortar. Forms shall be supported or fixed by wedges of the load being eased and the forms removed without sock to the work and without hammering.

LAYING Before depositing the concrete, the reinforcement shall be correctly laid in position and secured against displacement by tying with soft iron wire. The bars shall remain in position 20 mm. CURING The concrete when laid shall be carefully protected from the extremes of weather and temperature and from unequal or too repaid drying.

It shall be thoroughly kept wet for at least 15 days. Such a material is known as a horizontal damp proof course. It consists of cement concrete 1: The Damp proof course shall extend to the full width of the superstructure walls except in the case of outer walls where it shall not be carried across doorways and verandah openings and similar openings.

Vertical D. Emits a clear ringing sound when struck, shall be free from flaws, cracks etc. All brick work shall be taken truly plumb, laid in English bond. The proportions upon the ingredients available at site. General one part of lime and 2 parts of surkhi are suitable.

Same specification as perpara 3. The measuring wooden boxes may be used. The ingredients shall be mixed twice dry and then ground with sufficiency of water in a mill continuously for three hours.

For big works a bullock mortar mill see Fig. Class shall be taken that fresh mortar shall be made daily and used as fresh as The vertical joints must be quite symmetrical and truly plump in case of Ist class brick work. The joints in faces which are to be plastered or pointed shall be raked out while the mortar is green. The brick work shall be kept moist for a period of ten days. Mortar to which the water has been added shall be used within 30 minutes of the addition of water.

Same as per in item The joints in faces which are to be plastered or pointed should be racked out while the mortar is green i. All bricks or tiles or tiles shall be laid in lime or cement mortar with bed and vertical joints full of mortaar1: The laying shall be in plain, diagonal, herring bone or other pattern as desired by the Engineer-in-charge.

The work shall be protected from the effect of sun, frost and rain during construction. Before use, all bricks or tiles shall be soaked in clean water in tanks for at least one hour. The joints shall not exceed 6mm in thickness. The mortar in the joints shall be struck off flush with s trowel.

Care shall be taken that no mortar shall spreed over the edge of the bricks or tiles. The floor must be kept wet for seven days after laying. If cement pointing is done, it shall be kept moist for at least 15days after the pointing has been done.

After the terrazzo concrete has hardened enough to prevent dislodgement of aggregate, it shall be ground down with an approved type of grinding machine shod with free rapid cutting carborundum stones to expose the coarse aggregate. The floor to be kept wet during grinding process. After this the finish shall be scrubbed with warm water and soft soap and mopped dry.

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C slabs. In case of upper floors the mortar bed shall be of 1: The marble slabs should be of approved quality and thickness 20mm to 25mm with truly plane surface. The size of marble slab shall be slightly oversize to permit cutting to actual size of tiles at the site of work. During the progress of work and for 10days after laying, each section of floor shall be kept flooded. Three clear days shall be allowed for setting before the pavement is walked over and no weight should be rested upon the surface, until 7days after laying is completed, Polishing is done, as in case of Terrzo flooring and no first cutting is usually needed.

Resting on wooden or reinforced cement concrete battens spaced 30 cm centre to centre. The top of tiles shall have 13mm thick cement plaster 1: In all cases the construction shall be such as to ensure that the door shall be satisfactory in service. The width of the rebate shall be 13 mm.

Each coat be allowed to dry before nest is applied. New plastered surface tone white washed, shall not be trowel led to a glaxed surface otherwise white wash will not adhere. Water shall ne added to this lime in a tub, until the mixture is of a consistency of cream and allowed to rest for 24 to 48 hours.

The mixture shall then be strained through coarse cloth, suitable quantity of gum shall be added, dissolved in hot water. This hot water shall be added at the rare of about 5 liters per kg.

The pigment shall be such as to be unaffected by lime. The surface to be colour washed shall be given one coat of white wash and then one or two coats of colour washing. Each coat of site or colour wash is to be allowed to dry and passed by the Engineer- in-Charge before the next is applied. The sand papering must be finished with the grain. Before applying paint, all knouts must be killed or covered with two coats of patents knotting or with a preparation of red lead glued size, laid on hot.

When the wood work is thoroughly dry, the priming coat shall be applied.

Earth filling Embankment 1. Before any earth work is commenced, the ground be cleaned of all trees jungle and roots of every description. The embankment shall be made from borrow pits on either side of the road. The earth work should be laid in layers of 15 cm.

The final compaction may be ordinary power roller. The side slopes of the formation should preferably be about 4 to 1 except in high embankments with goods soil where the slope be increased to 2 to 1. Soling coat 2. Soling shall always be provided under the wearing coat except when the road is founded on a very hard natural surface such as on rock.

Width The width of the soling shall always be 30 cms. More than the proposed width of the carriage way. For instance, if the carriageway is 3. In case where bricj on end edging is provided the width of soling shall be same as that of the width of carriageway.

Collection of soling Where soling coat of bricks is to be provided, all bricks shall be fully burnt or over burnt. The bats which are less than half a brick in size shall not be used. Stacking The bricks or stones collected shall be stacked parallel to the centre line of the road and clear from the formation width. Gaps at least 1. Stone The stone shall be hard, durable and tough in texture and be obtained from an approved quarry. Spliced with human DNAW. Johan Piron Associates Pty Ltd.

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