HOW BEAM COLUMN JOINTS RESISTS EARTHQUAKES?

Why Beam-Column Joints are Special In RC buildings, portions of columns that are common to beams at their intersections are called beam-column joints (Figure 1). Since their constituent materials have limited strengths, the joints have limited force carrying capacity. When forces larger than these are applied during earthquakes, joints are severely damaged. Repairing damaged joints […]

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from CivilBlog.Org http://civilblog.org/2017/03/24/beam-column-joints-resists-earthquakes/
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DIFFERENCE BETWEEN PLASTERING & POINTING

PLASTERING Applying mortar coats on the surfaces of walls, columns, ceiling etc. to get smooth finish is termed as plastering. Mortar used for plastering may be lime mortar, cement mortar or lime-cement mortar. Lime mortar used shall have fat lime to sand ratio of 1 : 3 or 1 : 4. If hydraulic lime is […]

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from CivilBlog.Org http://civilblog.org/2017/03/23/difference-plastering-pointing/
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8 COMMON TYPES OF PLASTICS USED IN BUILDING CONSTRUCTION

THE COMMON TYPES OF PLASTIC Different types of plastics that are used in construction industry are described below. 1. Polyethylene Plastic (PE) Polyethylene plastic is made from the polymerized vinyl monomers. Monomer is a kind of simple compound, which can be polymerized to become macromolecular compound. Three ways are used to polymerize the monomer: high-pressure […]

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SCAFFOLDS & LADDERS – SAFETY AT CONSTRUCTION

SCAFFOLDS AND LADDERS 1. General provisions Where work cannot safely be done on or from the ground or from part of a building or other permanent structure, a safe and suitable scaffold should be provided and maintained or other equally safe and suitable provision should be made. Scaffolds should be provided with safe means of […]

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from CivilBlog.Org http://civilblog.org/2017/03/11/scaffolds-ladders-safety-construction/
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HOW TO CHECK SUITABILITY OF WATER FOR CONCRETE MIXING?

SUITABILITY OF WATER FOR CONCRETE MIXING OBJECTIVE To assess suitability of water for use in concrete mix. Equipment Measuring cylinder Cube moulds Trowel Tamping rod Vibrating table Testing machine Procedure Analyse water for its chemical compositions as per IS 3025-1964 and compare these with permissible limits given in IS: 456-2000. In case water does not […]

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from CivilBlog.Org http://civilblog.org/2017/03/10/check-suitability-water-concrete-mixing/
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QUALITY CONTROL CHECKLIST FOR EXCAVATION WORK

Earth Excavation Checklist The following checklist should be used as a guide for better quality control over earth excavation. (1) Prior to the start of excavation operations, take photographs of the construction area, make sure that sufficient cross—sections are taken, and continue to take progress photographs during construction. (2) Review the log of borings to […]

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from CivilBlog.Org http://civilblog.org/2017/03/09/quality-control-checklist-excavation-work/
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WHETHER OR NOT TO SELECT CONCRETE FOR CONSTRUCTION?

FACTORS AFFECTING CHOICE OF CONCRETE FOR A STRUCTURE The choice of whether a structure should be built of concrete, steel, masonry, or timber depends on the availability of materials and on a number of value decisions. 1. Economy Frequently, the foremost consideration is the overall cost of the structure. This is, of course, a function […]

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from CivilBlog.Org http://civilblog.org/2017/03/07/whether-not-select-concrete-construction/
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PPC or PORTLAND POZZOLANA CEMENT

Portland Pozzolana Cement 1. Pozzolana Pozzolana is a volcanic powder found in Italy near Vesuvius A pozzolanic material is essentially a siliceous or aluminous material which possess no cementitious properties. But it has the property when it combined with lime to produce a stable pozzolana compound it has definite cementitious properties. In the presence of […]

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from CivilBlog.Org http://civilblog.org/2017/02/22/ppc-portland-pozzolana-cement/
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6 METHODS TO PREVENT DAMPNESS IN BUILDING

DAMPNESS PREVENTION METHODS: The following are the precautions to be taken to prevent dampness in buildings, before applying the various techniques. The site should be located on high ground and well-drained soil to safe guard against foundation dampness All the exposed walls should be of sufficient thickness to safeguard against rain protection (minimum 30 cm) […]

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PLASTERING – THINGS EVERY ENGINEER SHOULD KNOW

PLASTERING The following topics are covered in this post. What is plastering? What are the requirements of good plaster? Different types of mortars for plastering Number of coats of plastering How to preparation of background before plastering? What are the recommended mortars mixes for different situation? What are the defects in plastering? What is plastering? […]

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