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WELDING SYMBOLS

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TYPES OF WELDING SYMBOLS     TYPES OF JOINTS By mean so welding, it is possible to make continuous, load bearing joints between the members of a structure. A variety of joints is used in structural steel work and they can be classified into four basic configurations namely , Lap joint,Tee joint, Butt joint and Corner joint.       For lap joints, the ends of two members are overlapped and for butt joints, the two members are placed end to end, The T joints form a Tee and in Corner joints, the ends ae joined like the letter L. Most common joints are made up of fillet weld or the butt also called groove weld. Plug and slot welds are not generally used in structural steel work. Fillet welds are suitable for lab joints and Tee joints and groove welds for butt and corner joints. Butt welds can be of complete penetration or incomplete penetration depending upon whether the penetration is complete through the thickness or partial. Generally a de...
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FILLET WELD

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WHAT IS FILLET WELD AND ITS PROCESS     Weld is the process of joining two pieces of metal by creating a strong metallurgical bond between them by heating or pressure or both. It is distinguished from other forms of mechanical connections. Such as riveting or bolting, which are formed by friction or mechanical interlocking. It is one f the oldest and reliable methods of joining.      Welding offers many advantages over bolting and riveting. Welding enables direct transfer of  stress between members eliminating gusset and splice plates necessary for bolted structures. Hence,     the weight of the joint in minimum.   In the case of tension members, the absence of holes improves the efficient of the section. It involves less fabrication cost compared to other methods due to handling of fewer parts and elimination of operations like drilling, punching etc. and consequently less labor leading to economy. Welding offers air tight ...
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WATER TO CEMENT RATIO

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WATER TO CEMENT RATIO The ratio between water and cement by weight is known as Water Cement Ratio. The quantity of water added to the cement while preparing concrete mixes has been known to exert tremendous influence on the quality of concrete. Cement and water are the only two chemically active elements in concrete. By their combination they form a glue like binder paste which create bond between fine aggegates and course aggregate. Water is the most important element in concrete governing all the properties of cement concrete like durability, strength and fire resistance. THE FUNCTIONS OF MIXING WATER ARE : ·          When water mix with cement ,The chemical reaction starts between water and cement , ·          This reaction starts the hydration in past   from that the cement and water past starts setting        according to the ...
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