0000004363 00000 n The concrete shall be laid in forms and tapped in such a way that no honeycomb surface appears on removal of the forms. 0000001490 00000 n 5. startxref Reinforcement steel 64 9. The mortar of one cement bag shall only be prepared at a time and it shall be prepared on a water tight platform or in a steel trough. Cement, fine aggregates, coarse aggregates and water are mainly used to form cement concrete. The coarse aggregate for the concrete work shall be clean and free from impurities such as earth, coal dust and other organic materials. 0000007261 00000 n Reinforced cement concrete (R.C.C) is the combination of ordinary concrete with the reinforcement to increase its compressive and tensile strength to a great extent. Note 1-The material described in this specification may be used for blending with portland cement to produce a cement meeting the requirements of M 240M/M 240 or as a separate ingredient in concrete or mortar mixtures. This paper compares and summarizes design specifications and construction requirements, with a specific focus on “nominally reinforced rubble stone masonry (NRM) with cement mortar and wooden diaphragms in seismic areas.” Reinforced Concrete. 0000000016 00000 n The first coat shall be provided with zigzag lines such that the first coat adheres well with the second coat. It should be suitable for drinking purpose. In plain cement concrete coarse aggregate should be hard durable and free from impurities. Finishing of Exposed surface- All exposed surfaces of the concrete work shall be finished with 12mm thick cement plaster of sagol finish and three coats of white or colour was shall be applied on these exposed surfaces of concrete. Laying and Curing- Before start laying of concrete in position; the centering shall be well watered. The sponge shall be used in the second coat and it shall be applied when the second coat is wet and it shall be so worked that the density of the sand grains appearing on the surface shall be equal and uniform. A-3 SPECIFICATIONS, REINFORCED CONCRETE CONSTRUCTION Revised 2005/01/17 Page 2 of 31 3.6.5 Similar separate storage shall be provided for packaged cement. Brick work 79 11. 0000002301 00000 n Reinforced Cement Concrete 25 6. While writing detailed specifications, explain The specifications of every single component should be narrated briefly at the time of formulating detail specifications. The second court shall give uniform grey colour to the whole structure or any other colour approved by the engineer. The sand shall be washed, if there is any trace of earth in it. Mixing- The mixing of concrete shall be done in a mechanical mixer or by hand operations depending on the quantity of the concrete which shall be decided by the engineer. It's the best way to discover useful content. Sand particles should have coarse, sharp and angular edges. Concrete can have different properties depending upon the mixture that is used in creating it, which contains cement, chemical admixtures, and aggregates. Measurement- The payment shall be made for superficial are covered. xref 128 0 obj<>stream It should be of good quality and should meet all the standard specifications. Cement should be fresh Portland cement. 20mm thick external plaster in CM (1:4). Draft detailed specifications for: 1: RCC (1:1.5:3) for slabs, beams, lintels and staircase 2: 20mm thick external plaster in CM (1:4). The unclean aggregates shall have to be screened and washed before use. %%EOF 112 0 obj <> endobj 0000000653 00000 n Structural steel 67 10. Detail specification. The cement concrete shall be kept well watered for at least 20 days. ... Statistics. Form work 56 s p o t S 3 r 6 e t a W . The material may also be useful in a variety of special grouts and mortars and, when used with an appropriate activator, as the principal cementitious material in some applications. Water- The water to be used in concrete work shall be clean and fresh. The spacing of bullies shall not be more than 120cm centre to centre. 1.02 REFERENCE SPECIFICATIONS Size. 0000003854 00000 n Construct. Dry cast using Type III/V Cement which meets the requirements for both Type III and Type V Cement. The number of strokes per layer required to produce specified conditions will vary according to the type of concrete. Flooring 84 14. trailer Introduction; Transportation. RWD Tender For Civil Works Roads Mmgsy Ndb Brrp 320 Benipur , Due Date: 11-01-2021 ,Tender Value: 50037100 ,City : BENIPUR, Location: Bihar Tender Notice 26489348 drawings precast reinforced concrete crown units and link slabs shall be designed and supplied in accordance with rta qa specification r16 precast reinforced concrete box culverts 32 2 cover sheets, in this work a detailed study of optimum design of reinforced concrete box culvert was carried out 0000002544 00000 n Sea sand is prohibited for construction work, because of high salt contents. Laying and compaction should be done before setting of concrete i.e. This project outlines the important components and basic techniques and methods required for structural detailing of a reinforced concrete duplex. 0000001355 00000 n Sand is used as fine aggregate in cement concrete. Rubble Stone Hard Core 83 13. <<1EC04CF2CE4FDA489D807A6198E595EB>]>> 1. 0000001133 00000 n Finishing of Exposed surface- All exposed surfaces of the concrete work shall be finished with 12mm thick cement plaster of sagol finish and three coats of white or colour was shall be applied on these exposed … RCC SPECIFICATIONS • Shuttering shall be done using seasoned wooden boards of thickness not less than 30mm. 112 17 Detailed Specifications of Cement Concrete. Procedure for Second coat- The second coat of sand faced cement plaster shall be carried out in CM of proportion 1:1 and shall be of thickness 8mm. Bar bending schedules showing now the reinforcement bars are to be bend a real so provided. ASTM's cement and concrete standards are instrumental in the evaluation and testing of concrete, cement, and aggregates. Ready mixed concrete for driveways is normally specified in accordance with American Standards for Testing and Materials specification ASTM C-94. AWWA C300, C302 and AWWA Design Manual M9 Concrete Pressure Pipe. Jalal Afsar January 18, 2015 No Comments. 2. Size of sand particles should be such that it passes through 4.75mm sieve. You'll get subjects, question papers, their solution, syllabus - All in one app. Water : Water should be clean and free from alkaline and other acidic matter. The heating that occurs in the kiln transforms the raw materials into new chemical compounds. C 7 V P 8. Concrete is a versatile material for modern construction which is prepared by mixing well-proportioned quantities of cement (even lime in some cases), sand , crushed rock or gravel , and water . Wood work 111 15. For this reason, many structural elements are now reinforced with steel fibres as partial or total substitution of conventional reinforcement (rebars or welded mesh, [ … 0000001271 00000 n All bars shall be placed as per design given by the engineer and utmost care shall be taken to keep them in the same position while packing concrete around them. 0000003890 00000 n Binding Materials; Road Pavement; Mechanics. Stone Masonry 81 12. The cement concrete shall be kept well watered for at least 20 days. The thickness of first coat shall be nowhere less than 12 mm, the first coat shall be well watered at least for 7 days. By following the correct specifications and construction methods, it will help avoid problems such as random cracking. STANDARD PRACTICE FOR THE DESIGN AND CON STRUCTION OF REINFORCED CONCRETE STORM SEWER PIPE (RCP) PART 1: GENERAL 1.01 SCOPE OF WORK Furnish all labor, materials, equipment and incidentals necessary to manufacture and test reinforced concrete gravity sewer pipe and fittings as shown on the drawings and specified herein. Centering- The centering for the concrete work shall be sufficiently strong and rigid and in good condition so as to turn out a good smooth surface. The mortar shall be consumed within 30 minutes after adding water. The minimum compressive strength of cement should be 175 kg/ m². Find answer to specific questions by searching them here. In the most general sense, portland cement is produced by heating sources of lime, iron, silica, and alumina to clinkering temperature (2,500 to 2,800 degrees Fahrenheit) in a rotating kiln, then grinding the clinker to a fine powder. Introduction; Probability; Home > Detailed Specifications of Cement Concrete. Mixing should be done by hand mixing or by machine mixing. 0000001659 00000 n In the former case, the mixing drum shall be turned at least for 1.5 minutes after all the ingredients are added and the drum shall be completely emptied every time. Sand should be clean, free from dust and organic matters. Fine aggregate should contain sharp, angular grain. 0000003018 00000 n Detail specification of lime concrete in foundation are as below:-. within 30 min. GENERAL SPECIFICATION. Reinforcement- All reinforcement shall be of steel which shall comply with the standard requirements. The sand to be used in the mortar for the second coat shall be perfectly screened so that sand of uniform size shall appear on the surface. 0000003632 00000 n The bullies shall be supported at the base on 40mm thick wooden plate having area not less than 0.10sq m. The surface of formwork shall be oiled before placing of concrete. Proportion : The proportion of the cement concrete should be 1:2:4 or as prescribed. This specification covers reinforced arch-shaped concrete pipe to be used for the conveyance of sewage, industrial wastes, storm water, and for the construction of culverts. Procedure for First Coat- The first coat for sand faced cement plaster shall be of cement mortar in proportion 1:4 one part of cement to four part of clean, coarse and angular river sand by volume. ��K���ta�1�V�wq�A���u��V��C\F�w�!�&'x�7C����,pQ����w�k}[email protected]��:�L��h8��i�%���Z�P(��c�)�D��F� �����T.cm� -� q�m��VQ�}��ҋ��-c�ێ.���@����a[��1�n�r�}$�X|bN��UkzavQp�`2i#3�Y�H�b�*ƨiB�q�8�� =~���o���0lϒ������H�{� ��3�D��Ly�)�)�����ؾWm�GE)��3�}'�c��[ �T���=Y��. Ferrocement or ferro-cement is a system of construction using reinforced mortar or plaster (lime or cement, sand and water) applied over an "armature" of metal mesh, woven expanded-metal or metal-fibers and closely spaced thin steel rods such as rebar.The metal commonly used is iron or some type of steel, and the mesh is made with wire with a diameter between 0.5 mm and 1 mm. 0 Before laying the concrete, the reinforcement shall be got approved by the engineer. • Surface contact with concrete shall be free from adhering grout, nails, splits and other defects. The second coat shall be applied on the first coat at least after 7 days of completion of first coat. 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