পদ্মা সেতু নিয়ে চায়নার ইঞ্জিনিয়ার যে সত্যটা জানালো । কি আছে পদ্মার নিছে । Padma bridge

Padma. There are very few people in Bangladesh who have not seen the Padma face to face. When you see the Padma, what do you see? Its width?? Of course, its width. Because the depth and the vastness of the current are not so easily understood. Do you know how deep the river is? The bottom of the river is about forty meters below the water. But meters. Not feet. Forty meters means about 131 feet. Ten feet is usually the height of a sala. Accordingly, the height of the Padma river from the bottom to the water surface is equal to a 13-story building. So the columns of the bridge (which are actually called piers in civil language) must be equal to a 13-story building. But if the columns are not anchored in the ground, the current of the Padma will wash away the columns. Do you think a column as long as 13 floors will not wash away? It will. It is the Padma. So the columns have to be embedded in the ground. How much should you embed them? The soil at the bottom of the Padma is sand type, soft mud type. Not hard like stone. Bedrock is estimated to be about 8 km below. 8 km is the height of Mount Everest! So it is better not to dream of going to bedrock. In many countries, bedrock is found much lower. It is very cheap to build any structure in their country because their foundation is very easy to build and the cost is also low. We are in trouble in this regard. If anyone uses our promoted videos and content without permission or uploads them, we will claim under copyright law. If you like our promoted videos, please subscribe. Like, comment and share to stay tuned. Keep watching for more new programs.Here we publish all bangla news and latest bangla news. so subscribe our channel to get all breaking news of bangladesh and todays bangla news. Our Facebook page.   / dubeenbangla