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3. Market Demand Demand plays a crucial role in determining prices. The construction industry's current trends, such as the use of sustainable materials and the rise in urban infrastructure projects, can lead to increased demand for corrugated stainless steel sheets. Manufacturers may adjust prices based on current market conditions and projected demand.
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There are three different types of manholes: shallow, normal and deep. “Normal” manholes are typically 4- to 5-feet deep and wide enough for the average person to fit in. Shallow manholes are 2- to 3-feet deep, often placed at the start of a sewer branch and in areas with low traffic. Manholes with a depth greater than 5-feet are considered deep and usually have an entry method like a ladder built-in, as well as a heavier cover.