LEGEND OF CIVIL

INTRODUCTION   The intake structure is a hydraulic structure. Which is used to divert the water from a source (like a reservoir, river) into a conduit (like a canal, tunnel, or pipe). It also supports auxiliary appurtenance (Such as trash rack, fish screens, and bypass devices) and it may include provision for installation of the bulkhead gates or stop-log gates closure devices. TYPE OF POWER INTAKE STRUCTURE The Position and location of intake would generally depend upon the type  of development and may be classified under: A) Run-Of-the river type Intake B) Reservoir-type intake Depending on the function, an intake structure may be either submerged or extended in the form of a tower above the maximum reservoir water surface (Fig. 6B) An operating platform is needed to remove trash, maintain and clean fish screens, or install stoplog gates.  Depending on intake requirements, the entrance may be placed vertically, inclined, or horizontally. Conduit entrances should...

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 As per IS 6966-(Part-1) the discharge of  barrage or weir is calculated using below formula: Calculation of discharge capacity of the barrage

CAUSES OF FAILURE OF BARRAGE AND THEIR REMEDIES | DAM | BARRAGE | WEIR The weir and barrage failure may take place due to the following reasons Piping or undermining. Rupture of the floor due to uplift . Rupture of the floor due to suction caused by standing wave . Scour at U/S and D/S side of weir floor . 1. Piping or undermining When water seeps under the base of the weirs founded on the permeable soils, emerges out at the D/S end of the impervious floor of the weir, hydraulic gradient or exit gradient may exceed a certain critical value for the foundation soil, the soil starts boiling at the exit point. Boiling of the soil indicates lifting of the soil against gravity and it happens only when exist gradient of seeping water is greater than the safe limit for the foundation soil. The soil gets wash out with percolating water. This process of erosion of soil from below the foundation, progressively, works backward towards the U/S. This process ultimately develops a channel or pi...

Construction of the house is one of the complex activities. Before the construction of the house, we have to take care of many things.   Monsoon Season is a major factor to start and plan any type of construction. It involves heavy rain which could be a blunder to start the construction during the period. So, It is important to know the monsoon season. In India metrological department say 4 climatological: Winter (December to February) Summer or Pre-monsoon Season (lasting from March to May) Monsoon or rainy season (lasting from June to September) Post monsoon or Autumn (lasting from October to November) From the month of September to march usually, there is no rain in India So it is a good time to start your construction of the house.

 Toposheet No. 64b/5 & 64b/9  Download  

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