4. Flood Impact on Housing and Infrastructure

Now, asymmetric buildings with empty pockets are more vulnerable to damage because don’t leave these empty pockets, we tried to fill that and that is where these are more stable. The symmetric buildings are more stable and also when we say about the row house planning; the row house planning also creates wind tunnel effects because the moment your house is one step to another, next to the shore and then it channels the wind and that is where it can damage the edges of the walls or the corners.

This chunk discusses how the design of buildings affects their stability during floods. Asymmetric buildings, which have uneven shapes or empty spaces, are more likely to get damaged. In contrast, symmetric buildings that have a balanced design tend to be more stable. Additionally, row house planning can create 'wind tunnels,' which means that wind channels through gaps between houses and can erode the foundations and edges of walls.

Imagine standing between two tall buildings on a windy day; the wind feels stronger because it is funneled between them, similar to how row houses can increase wind pressure between them, leading to damages.

So, the building's shorter side will face the seaside, so that is how they are oriented. In terms of quality control, it also talks about the material, what are the ratios we have to include. When we say about do not use cement and sand to be less than 1:6.

This section explains how buildings are oriented based on the wind direction to minimize damage. In coastal areas, buildings are designed so that their shorter sides face the sea to withstand strong winds. It also highlights the importance of using the right mix of materials in construction, such as maintaining a cement to sand ratio of at least 1:6 to ensure structural integrity.

Think about how airplane wings are designed; they are shaped to face into the wind, allowing for smoother airflow. Similarly, the orientation of buildings helps them face the elements effectively.

... the 2018 Kerala flood have almost submerged 3/4th of the houses even on the top but even after the flood process still certain because you see that when this kind of images have formed, even after this low-lying areas are still leftover with the water and that is what creating some endemic and epidemic diseases which are spreading.

This chunk touches on the aftermath of floods and their lingering effects. For example, the 2018 Kerala floods submerged a significant number of homes, and even after the waters receded, stagnant water in low-lying areas became a breeding ground for diseases. This situation highlights the need for effective drainage systems and infrastructure to prevent health crises following natural disasters.

Consider how stagnant water in a rain barrel can lead to mosquito breeding. Similarly, floodwaters left behind can cause serious health risks for communities.

The difference in water levels for instance, the amount of water it enters and the amount of water outside, this is almost 8 cars, you know the load which is coming of the 8 cars worth of load which is pushing this wall and this difference in water level you know creates the pressure on the wall.

This part describes the impact of pressure created by different water levels during flooding. As water flows into a structure, it can create significant pressure against walls, equivalent to the weight of several cars pushing against them. This can lead to structural failures if the walls are not designed to withstand such loads.

It's like pressing your hands against a door; if you push hard enough, the door might bend. Similarly, when water exerts pressure against a wall, it can cause damage if the wall isn't strong enough.

For example, in architecture we might have studied shoring and you might have studied about raking shores and you might have studied about underpinning...

This section introduces various techniques for repairing damaged structures after floods. Concepts like shoring (providing temporary support), underpinning (strengthening the foundation), and addressing cracks in walls using specific procedures are essential for making buildings safe again. Techniques involve identifying the type of damage and applying suitable repair strategies.

Imagine how you might support a wobbly table with books underneath its legs; in the same way, shoring supports weaker walls or foundations until permanent repairs can be made.

So, one has to understand that each state is been sub-categorized by different cultural geographies, not only the geography but they also vary with the cultures...

This segment discusses how different regions have unique construction practices based on cultural influences and geographical features. States like Tamil Nadu and Gujarat exhibit diverse building styles due to their different landscapes and cultural histories, necessitating tailored disaster management strategies.

Think of how different recipes use various ingredients; just as each region has its own flavor preferences, construction methods need to align with local traditions and environments.

--