For a colony of 10000 persons having sewage flow rate of 200 1/capita/day, BOD of applied sewage is 300 mg/1 and organic loading rate is 300 kg/day/hectare. The area of an oxidation pond required for treating the sewage of the colony is hectare.

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Connections

In steel structures, connections are the members that join two or more steel members. The connections are the most important members of any steel structure, and hence, they are designed more carefully. The majority of the construction cost of steel structures is incurred due to the connections. The design of connections is done as per the recommendations and specifications of the American Institute of Steel Construction (AISC).