IS 1343 CODE PDF

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IS Hkkjrh; ekud. iwoZizcfyr daØhV— jhfr lafgrk. (nwljk iqujh{k.k). Indian Standard. PRESTRESSED CONCRETE — CODE OF PRACTICE. ( Second. IS: - (Reaffirmed ). Edition (). Price Group Indian Standard. CODE OF PRACTICE FOR. PRESTRESSED CONCRETE. IS Indian Standard. PRESTRESSED CONCRETE — CODE OF PRACTICE. This standard deals with the general structural.


Is 1343 Code Pdf

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Download Prestressed concrete code pdf: bestthing.info download?file=prestressed+concrete+code+++pdf Read. Designator of Legally Binding Document: IS Title of Legally Binding Document: Code of Practice for Prestressed Concrete Number of. The IS was first published in and the first revision was N/mm2 as in IS: . IS “CODE OF PRACTICE FOR PLAIN.

IS : Hot-dip zinc coatings on mild steel tubes first revision IS : Seamless and welded steel pipes for sub zero temperature services IS : Steel pipes for hydraulic purpose IS : Thin welded flexible quick coupling pipes Plastic Pipes IS : Low destiny polyethylene pipes for potable water supplies second revision IS : High density polyethylene pipes for potable water supplies, sewage and industrial effluents third revision IS Code of practice for plastic pipe work for potable water supplies.

Part 1 : General requirements Part 2 : Specific requirements of 45 degree elbows Part 3 : Specific requirements for elbows Part 4 : Specific requirements for tees Part 5 : Specific requirements for tees Part 6 : Specific requirements for sockets Part 7 : Specific requirements for unions Part 8 : Specific requirements for caps IS Injection moulded HDPE fittings for potable water supplies Part 1 : General requirements Part 2 : Specific requirements for bends Part 3 : Specific requirements for tees Part 4 : Specific requirements for reducers Part 5 : Specific requirements for ferrule Part 6 : Specific requirements for pipe ends Part 7 : Specific requirements for sandwich flange Title Part 3 : Specific requirements for bends IS Fabricated PVC fittings for potable water supplies Part 1 : General requirements Part 2 : Specific requirements for sockets first revision Part 3 : Specific requirements for straight reducers first revision Part 4 : Specific requirements for caps first revision Part 5 : Specific requirements for equal tees first revision Part 6 : Specific requirements for flanged in to pieces with metallic flanges first revision Part 7 : Specific requirements for threaded adaptors first revision Part 8 : Specific requirements for 90 degree bends first revision Part 9 : Specific requirements for 60 degree bends first revision Part 10 : Specific requirements for 45 degree bends first revision Part 11 : Specific requirements for 30 degree bends first revision Part 12 : 1 Specific requirements for 22 degree 2 bends first revision 1 Part 13 : Specific requirements for 11 degree 4 bends first revision Title pipes for potable water supplies.

Part 1 : Methods for measurement of outside diameter. Part 2 : Measurements of wall thickness Part 3 : Test for opacity Part 4 : Determining the detrimental effect on the composition of water Part 5 : Reservoir test Part 6 : Stress relief test Part 7 : Test for resistance of sulphuric acid Part 8 : Internal hydrostatic pressure test Part 9 : Impact strength test Part 10 : Method for determination of organizing as aqueous solution.

Part 11 : Extractability of cadmium and mercury occurring as impurities IS : Specification for glass fiber reinforced plastic GRP pipes for water supply and sewerage.

Miscellaneous Pipes IS : Soild drawn copper alloy tubes for condensers and heat exchanger second revision IS : Lead Pipes Part 1 : For other than chemical purpose second revision Part 2 : For chemical purpose second revision IS : Recommendations for cement — mortar lining for cast iron, mild steel and ductile iron pipes and fittings for transportation of water.

Title Taps 1. IS : Cast copper alloy screw drawn bid taps and stop valves for water services third revision 2. IS : Drinking foundations first revision 3. IS : Self — closing taps for water supply purpose second revision 4. IS : Pillar taps for use with fittings for water services second revision 5.

IS : Washers for use with fittings for water services first revision 6. IS : Cast copper alloy fancy pillar taps for water services. IS : Plastic bid taps and stop valves rising spindle for cold water services.

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Water Meters 8. IS : Water meters domestic type fifth revision 9. IS : Water meter boxes domestic type first revision IS : Water meter bulk type third revision IS : Code of practice for selection, installation and maintenance of domestic water meters first revision IS : Method for performance testing of water meters domestic type first revision Valves IS : Sluice valves for water works purpose 50 to mm size sixth revision IS : Sluice valves for water works purpose to mm size third revision IS : Single faced sluice gates to mm size IS : Surface boxes for sluice valves first revision IS : Copper alloy gate, globe and check valves for water works purpose fourth revision IS : Mixing valves for ablutionary and domestic purpose IS : Ball valves horizontal plunger type including floats for water supply purpose second revision IS : Foot valves for water works purposes second revision IS : Single door pattern first revision Part 1 : Single door pattern first revision Part 2 : Multi door pattern IS : Cast iron screw down stop valves and stop and check valves for water works purpose first revision IS : Pressure reducing valves for domestic water supply systems.

IS : Equilibrium plastic float valve for cold water services. Miscellaneous Fittings IS : Ferrules for water services first revision IS : Plug cocks for water supply purpose first revision IS : Polyethylene floats for ball valves Title 1.

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IS : Glossary of terms used in water well drilling technology 2. IS : Code of practice for construction and testing of tubewells Part 1 : Construction first revision Part : Testing first revision 3.

IS : Methods for tube-well development 4. IS : Code of practice for rehabilitation of tubewell Tubewell Components 5. IS : Gravel for use as pack in tubewells 6. IS ; Steel tubes used for water wells first revision 7. IS : General requirements for reverse circulation drilling rigs 9.

IS : General requirements for straight rotary drilling rigs IS : General requirements for blast hold drilling rigs IS : Dimensions for drill steel in bar from for percussive drilling IS : Rope threaded percussive long hole drilling equipment IS : Keeleys for direct rotary drilling IS : External upset drill pipe assemblies for use in water well drilling Part 1 : Screwed on joints drill pipe size IS : Code of practice for selection and design of diamond core drills IS : General requirements for down the hole hammer rigs for water wells IS : Classification and selection of drilling rigs for water well drilling IS : Dimensions for rock roller bits and blade drag bits for rock drilling equipment Pumps and Related Standards IS : Shallow well hand pumps IS : Deep well hand pumps second revision IS : Horizontal centrifugal pumps for clear, cold, fresh water second revision IS : Vertical turbine pumps for clear, cold, fresh water first revision IS : Horizontal centrifugal pumps for clear, cold, fresh water for centrifugal purposes first revision IS : Submersible pump sets for clear, cold, fresh water IS : Horizontal centrifugal self priming pumps IS : Regenerative self priming pumps for clear, cold, fresh water IS : Monoset pumps for clear, cold, fresh water for agricultural purposes IS : Horizontal centrifugal monoset pumps for cold, fresh water IS Code of practice for selection, installation, operation and maintenance for horizontal centrifugal pumps for agricultural applications.

IS : Methods of sampling pumps IS : Recommendation pumping systems for agricultural purposes first revision IS : Foot valves, reflux valves or non return valves and bore valves to be used in suction lines of agricultural pumping systems first revision IS : Code for acceptance test for centrifugal mixed flow and axial pumps — Class B IS : Testing set up for agricultural pumps IS : Technical requirements for jet, centrifugal pump combination IS : Technical requirements for roto dynamic special purpose pumps Prime Movers IS : Three phase induction motors IS : Code of practice for installation and maintenance of induction motors IS : Single phase small A.

IS : Three phase squirrel cage induction motors for centrifugal pumps for agricultural application IS : Valves of performance characteristics for three phase induction motors IS : Motors for submersible pump sets IS : Performance requirement for constant speed compression ignition diesel engines for general purposes up to 20 Kw IS : Performance requirements for constant speed compression ignition diesel engines for agricultural purposes up to 20 Kw IS : Engine monoset pumps for clear, cold, fresh water for agricultural purposes IS : Code of practice for installation, operation and maintenance of hydraulic rams IS : Hydraulic rams Test code for hydraulic rams Test code for hydraulic rams 5 Water Quality 1.

IS : Potash ash first revision 2. IS : Aluminium alum first revision 3. IS : Aluminium sulphate 4. IS : Aluminium ferric third revision 5.

IS : Liquid chlorine second revision 6. IS : Bleaching powder, stable 7.

IS : Methods of sampling and microbiological examination of water first revision 8. IS : Glossary of terms and symbols used in connection with the measurement of liquid flow with a free surface first revision 2. IS : Velocity area methods for measurement of flow of water in open channels 3.

IS 1343: Code of Practice for Prestressed Concrete

IS : Forms for recording measurement of flow of water in open channels 4. IS : Recommendations for liquid flow measurement in open channels by slope area method approximate method Amendment No. IS : Recommendation for determination of flow in tidal channels 6. IS : Recommendation for estimation of discharge by establishing stage — discharge relation in open channels. Amendment No.

IS : Instructions for collection of data for the determination, of the flow by velocity area methods 8. IS : Recommendation for estimation for flow of liquids in closed conduits Part 1 : Head loss in straight pipes due to friction resistance Part 2 : Head loss in valves and fittings 9. IS : Recommendation for methods of measurement of liquid flow by means of orifice plates and nozzles Part 1 : Incompressible fluids Part 2 : Compressible fluids Title No.

IS : Specification for surface floats IS : Specification for sounding rods IS : Code of practice for use of current meter cup type for water flow measurement IS : Specification for fish weights IS : Specification for vertical staff gauges IS Methods of measurement of fluid flow by means of venturi meters: Part 1 : Liquids Part 2 : Compressible fluids IS : Specification for velocity rods Embed Size px.

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Cement and Concrete] 2. This standard was first published in The standard was subsequently revised in with a view to keeping abreast with the rapid development in the field of concrete technology and also to bring in further clarifications and modifications in the light of experience gained while applying the provisions of the earlier version of the Code to practical situations. The format and arrangement of clauses in the Code was then changed from the earlier version and the matter was divided into four sections as follows: Section 1 General Section 2 Materials, workmanship, inspection and testing Section 3 General design requirements Section 4 Structural design: Limit state method During the revision in , an attempt was made to unify the codal provisions between prestressed concrete structures and reinforced concrete structures, as was necessary.

Many of the provisions in Section 2 Materials, workmanship, inspection and testing, and Section 3 General design requirements of IS were applicable to prestressed concrete structures also and, therefore, only reference was made to such provisions in this Code. In some clauses, the Code recommended reference to specialist literature, since the current knowledge on some aspects of design had not yet crystallized.

This had also been done in order to avoid burdening the Code with a lot of details which may not be required for the design of great majority of structures. While deciding on the symbols used in the Code, the recommendations of ISO However, considering the convenience of the users of the Code, the familiar symbols of the old version were retained to the extent possible. The first revision incorporated a number of important changes.

The major changes in the revision were on the following lines: This, in fact, was a rationalization of the ultimate load method, covered in the earlier version. Consequently, the Code covered 3 types of structures, the types being associated with the permissible tensile stress in concrete.

Limitations on total chloride and sulphate content of concrete had also been given. IS has since been revised as IS In IS , major changes have been incorporated in provisions relating to materials, workmanship, inspection and testing, and general design requirements.

In view of the attempt at unification between provisions i 4. Considering this aspect as also the need for a complete review of the provisions of the Code in light of the latest international developments and the improved practices being followed now, a full scale revision of the Code has been brought out. In this revision, the following major changes have been incorporated: In the Code, it has been assumed that the design of prestressed concrete structures is entrusted to a qualified engineer, and that the execution of the work is carried out under the direction of an experienced supervisor.

The Committee, responsible for the formulation of this Code, has taken into consideration the views of stakeholders and has related the standard to the manufacturing and trade practices followed in this country in this field. Cognizance has been taken of provisions of the publications of Indian Roads Congress, New Delhi, wherever required. The composition of the technical Committee responsible for the formulation of this standard is given in Annex E.

For the purpose of deciding whether a particular requirement of this standard is complied with, the final value, observed or calculated, expressing the result of a test or analysis, shall be rounded off in accordance with IS 2: The number of significant places retained in the rounded off value should be the same as that of the specified value in this standard.

Flexure 31 Compression 32 Tension 32 Shear 32 Deflection 35 Cracking 36 It covers both work carried out on site and the manufacture of precast prestressed concrete units. This standard does not cover specific provisions regarding bridges.

At the time of publication, the editions indicated were valid. All the standards are subject to revision and parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent edition of the standards indicated in Annex A.

Other combinations of Portland cement with mineral admixtures see 5. Specialist literature may be consulted for guidance regarding the use of these types of cements. Consumers are, therefore, advised to go by the characteristics as given in the corresponding Indian Standard Specification or seek specialist advice to avoid any problem in concrete making and construction.

NOTE — Some of the provisions of the standard would require modification when these aggregates are used. Specialist literature may be consulted for guidance. For most work, 20 mm aggregate is suitable.

The nominal maximum size of the aggregate shall be 5 mm less than the spacing between the tendons, sheathings, ducts or untensioned steel, where provided. However, use of sea water is prohibited. Prestressing steel shall be subjected to acceptance tests prior to actual use on the works. The modulus of elasticity value, as per acceptance tests, shall conform to the design values which shall be within a range not more than 2.

IS Codes Complete List for Civil Engineers

Sand blasting or other treatment is recommended to clean reinforcement. Special precautions like coating of reinforcement may be required for reinforced concrete elements in exceptional cases and for rehabilitation of structures.

Specialist literature may be referred to in such cases. Reduction in design bond strength of coated bars shall be looked into. Table 1 Grade of Concrete Clauses 6. The quantum of increase depends upon the grade and type of cement, curing, environmental conditions, etc.

The design should be based on 28 days characteristic strength of concrete unless there is an evidence to justify a higher strength for a particular structure due to age. When the designer wishes to use an estimate of the flexural strength from the compressive strength, the following formula may be used: The modulus of elasticity is normally related to the compressive strength of concrete.

For a given humidity and temperature, the total shrinkage of concrete is most influenced by the total amount of water present in the concrete at the time of mixing and, to a lesser extent, by the cement content. Autogenous shrinkage is a linear function of concrete strength. It should be considered specifically when new concrete is cast against hardened concrete. These values are expected mean values, with a coefficient of variation of about 30 percent.

As long as the stress in concrete does not exceed one-third of characteristic compressive strength, creep may be assumed to be proportional to the stress. The values of coefficient of thermal expansion for concrete with different aggregates may be taken as below: Suggested ranges of values of workability of concrete are given in IS The materials and mix proportions specified and used should be such as to maintain its integrity and, if applicable, to protect embedded metal from corrosion.

Impermeability is governed by the constituents and workmanship used in making the concrete. With normal-weight aggregates a suitably low permeability is achieved by having an adequate cement content, sufficiently low free water-cement ratio, by ensuring complete compaction of the concrete, and by adequate curing. The factors influencing durability include, a the environment; b the cover to embedded steel; c the type and quality of constituent materials; d the cement content and water-cement ratio of the concrete; e workmanship, to obtain full compaction and efficient curing; and f the shape and size of the member.

The degree of exposure anticipated for the concrete during its service life together with other relevant factors relating to mix composition, workmanship, design and detailing should be considered. The concrete mix to provide adequate durability under these conditions should be chosen taking account the accuracy of current testing regimes for control and compliance as described in this standard. Care should also be taken to minimize any cracks that may collect or transmit water.

Adequate curing is essential to avoid the harmful effects of early loss of moisture. Member profiles and their intersections with other members shall be designed and detailed in a way to ensure easy flow of concrete and proper compaction during concreting.

Concrete is more vulnerable to deterioration due to chemical or climatic attack when it is in thin sections, in sections under hydrostatic pressure from one side The life of the structure can be lengthened by providing extra cover to steel, by chamfering the corners or by using circular cross- sections or by using surface coatings which prevent or reduce the ingress of water, carbon dioxide or aggressive chemicals.

When concrete lower than grade M 50 is used under these conditions, the mean total air content by volume of the fresh concrete at the time of delivery into the construction should be: For the very high sulphate concentrations in Class 5 conditions, some form of lining such as polyethylene or polychloroprene sheet; or surface coating based on asphalt, chlorinated rubber, epoxy, or polyurethane materials should also be used to prevent access by the sulphate solution.

Appropriate value for minimum cement content and the maximum free water-cement ratio are given in Table 4 for different exposure conditions. The minimum cement content and maximum water-cement ratio apply to 20 mm nominal maximum size aggregate.

For other sizes of aggregate they should be changed as given in Table 5. The higher the chloride content, or if subsequently exposed to warm moist conditions, the greater the risk of corrosion.

All constituents may contain chlorides and concrete may be contaminated by chlorides from the external environment. To minimize the chances of deterioration of concrete from harmful chemical salts, the levels of such harmful salts in concrete coming from concrete materials, that is, cement, aggregates, water and admixtures, as well as by diffusion from the environment should be limited. The total amount of acid soluble chloride content as Cl in the concrete at the time of placing shall be not more than 0.

The total acid soluble chloride content should be calculated from the mix proportions and the measured chloride contents of each of the constituents. Wherever possible, the total chloride content of the concrete should be determined. Environment Exposure Conditions 1 2 3 i Mild Concrete surfaces protected against weather or aggressive conditions, except those situated in coastal areas. Concrete exposed to condensation and rain. Concrete continuously under water.

Concrete surfaces sheltered from saturated salt air in coastal area.

Concrete completely immersed in sea water. Concrete exposed to coastal environment. Suitable adjustment may be made in the minimum cement content specified in case of use of aggregate other than 20 mm nominal maximum size. For SO3 contents near the upper limit of any class, cement contents above these minimum are advised. To prevent this, the total water-soluble sulphate content of the concrete mix, expressed as SO3 should not exceed 4 percent by mass of the cement in the mix.

The sulphate content should be calculated as the total from the various constituents of the mix. Damage to concrete from this reaction will normally only occur when all the following are present together: When the materials are unfamiliar, precautions should take one or more of the following forms: Further advantage can be obtained by use of fly ash conforming to IS Part 1 or granulated blast furnace slag conforming IS as part replacement of ordinary Portland cement having total alkali content as Na2O equivalent not more than 0.

For more guidance specialist literatures may be referred. The rate of deterioration decreases as the concrete is made stronger and more impermeable, and increases as the salt content of the water increases. Where structures are only partially immersed or are in contact with aggressive soils or waters on one side only, evaporation may cause serious concentrations of salts with subsequent deterioration, even where the original salt content of the soil or water is not high.

NOTE — Guidance regarding requirements for concrete exposed to sulphate attack is given in 8. Additional protection may be obtained by the use of impermeable barriers. The additions such as fly ash or ground granulated blast furnace slag may be taken into account in the concrete composition with respect to the cement content and water-cement ratio if the suitability is established and as long as the maximum amounts taken into account do not exceed the limit of pozzolana and slag specified in IS Part 1 and IS respectively.

Full compaction is particularly important in the vicinity of construction and movement joints and of embedded water bars and reinforcement. Good finishing practices are essential for durable concrete.

It is essential to use proper and adequate curing techniques to reduce the permeability of the concrete and enhance its durability by extending the hydration of the cement, particularly in its surface zone see also provisions on curing under The target mean strength of concrete mix should be equal to the characteristic strength plus 1.

Attempts should be made to obtain the 30 samples, as early as possible, when a mix is used for the first time. As soon as the results of The construction should result in satisfactory strength, serviceability and long-term durability so as to lower the overall life-cycle cost. Quality assurance in construction activity relates to proper design, use of adequate materials and components to be supplied by the producers, proper workmanship in the execution of works by the contractor and ultimately proper care during the use of structure including timely maintenance and repair by the owner.

Some common cases should be specified in a general Quality Assurance Plan which shall identify the key elements necessary to provide fitness of the structure and the means by which they are to be provided and measured with the overall purpose to provide confidence that the realized project will work satisfactorily in service fulfilling intended needs.

The job of quality control and quality assurance would involve quality audit of both the inputs as well as the outputs. Inputs are in the form of materials for concrete; workmanship in all stages of batching, mixing, transportation, placing, compaction and curing; and the related plant, machinery and equipments; resulting in the output in the form of concrete in place.

To ensure proper performance, it is necessary that each step in concreting which will be covered by the next step is inspected as the work proceeds see also A Quality Assurance Plan shall define the tasks and responsibilities of all persons involved, adequate control and checking procedures, and the organization and maintaining adequate documentation of the building process and its results.

NOTE — Quality control charts are recommended wherever the concrete is in continuous production over considerable period. In batching concrete, the quantity of both cement and aggregate shall be determined by mass; admixture, if solid, by mass; liquid admixture may however be measured in volume or mass; water shall be weighed or measured by volume in a calibrated tank see also IS For large and medium project sites the concrete shall be sourced from readymixed concrete plants or from on site or off site batching and mixing plants see IS The material should be stock-piled for several hours preferably a day before use.

The grading of coarse and fine aggregate should be checked as frequently as possible, the frequency for a given job being determined by the engineer-in-charge to ensure that the specified grading is maintained. To this end, determination of moisture content in both fine and coarse aggregates shall be made as frequently as possible, the frequency for a given job being determined by the engineer-in- charge according to weather conditions.

The amount of the added water shall be adjusted to compensate for any observed variations in the moisture contents. For the determination of moisture content in the aggregates, IS Part 3 may be referred to.

To allow for the variation in mass of aggregate due to variation in their moisture content, suitable adjustments in the masses of aggregates shall also be made. The mixers shall be fitted with water measuring metering devices. The mixing shall be continued until there is a uniform distribution of the materials and the mass is uniform in colour and consistency. If there is segregation after unloading from the mixer, the concrete should be remixed.

In addition, Curves or bends in prestressing tendon required by the designer shall be gradual and the prestressing tendon shall not be forced around sharp bends exceeding 1 in 6 both in plan and elevation or be formed in any manner which is likely to set up undesirable secondary stresses. The minimum radius of curvature for curved cables shall be specified to ensure that bursting of side cover both perpendicular to the plane of curvature and in the plane of the ducts do not take place.The tension apparatus shall be such that it facilitates measurement and control of application of force.

Prestressing steel shall be subjected to acceptance tests prior to actual use on the works. July Die Skripte. With such movement, any leakage of mortar which has taken place in spite of all precautions loses bond with the cables, thus reducing the chance of blockages. How do I publish content on my topic? Views Total views. IS : Requirements of settling tank clarifier equipment for water treatment plant At the time of publication, the editions indicated were valid.

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