What foundation is most suitable for a house close to the sea?

[symakhan]

Hey Guys

I am a civil engineer by profession. I am working with a construction firm specializing in apartments and pensions design and building. However, now that I am much more experienced in my field, I will start my own work. Now I have started a small house construction project, and I am here to discuss the foundation design of that house. The foundation design is quite an important part of the construction as it ensures structure stability, safety, and support. It is difficult to measure the load-bearing capacity of soil in a small area like a house; however, we can ensure that our house's foundation is strong enough to hold its weight. We can begin by selecting the house's location with good soil quality and a stable foundation. Concrete slabs are often preferred for creating a house's foundation. This is because they provide more strength and stability than other foundations like blocks or timber frames. Moreover, it is important to use high-quality materials for the foundation, such as steel reinforcements, cement, and aggregates. The placement of the foundation should also be considered carefully. It should be placed below the frost line to ensure that it is not affected by frost heaves and other weather conditions. However, as a first-time solo builder, I am here to ask some questions from experts.

What foundation is most suitable for a house close to the sea?

What type of insulation should be used to provide additional protection against moisture and water seepage?

How should the foundation be anchored correctly to ensure it is not affected by wind or other external forces?

How should reinforcements, cement, and aggregates be used to ensure the foundation is durable?

Where can I find coupons and discounts on the materials needed for the foundation?

I'm looking forward to hearing your advice. Thank you in advance!

[Badar (BAZ)]

Please leave it to some one who understands it better. After reading your post, I think, you are not the right person ( from practical building construction point of view) to get the advice.

[symakhan]

Hey Guys

A few days ago I asked about house construction. I got amazing responses from all of you. I also asked some expert builders and here I am sharing all the information I got from them.

1) The best way to build a house close to the sea is to use reinforced concrete foundations. The reinforcing bars provide additional strength and durability in areas that are prone to coastal erosion or flooding. This will help ensure that your house has a strong and stable foundation, even in harsh weather conditions.

2) The best insulation material to use near the ocean is a closed-cell spray foam. This type of insulation helps prevent moisture from entering your house through gaps, cracks and joints. It also ensures that cold air does not penetrate the walls and floors, helping keep the temperature inside the house comfortable.

3) The foundation of a home near the ocean should be properly anchored to ensure it is not affected by wind, waves, or other external forces. Anchoring can be done with steel rods, concrete anchors, and ground anchors that are embedded in the soil beneath your foundation.

4) Reinforcements can be used to increase the strength and stability of a foundation near the ocean by providing additional support for the concrete. Steel rods, plastic mesh, or other materials should be embedded in the concrete mix before pouring it into forms. Cement and aggregates should also be correctly mixed together with water to produce a strong concrete. that

5) Many home improvement stores offer coupons and discounts on the materials needed for a foundation. Additionally, online discounts can be found through various retailers, such as Home Depot, Lowe's, and Amazon. Some best deals, I found online are:

https://www.retailmenot.com/view/constructiongear.com

https://www.greenpromocode.com/coupons/construction-complete/

https://www.coupongot.com

[Dik]

If coastal and a small project, then find out from others what type of foundation is generally used in the area.  It depends on the soil type and bearing strength.  If subject to salt water, corrosion will be an issue and you want to have a dense concrete, adequate concrete cover and adequate strength. You might consider HDG reinforcing steel for added corrosion protection.  With climate change coming up, you also want to be high enough for the water level to rise several feet without it affecting the building.

Dik

[Shoaib Hassan]

Hello, the foundation is based on the structure loads and soil bearing capacities. If the soil BC is good around 1 to 1.5 TSF, you can provide isolated and if the loads are high soil BC is low, then you can provide strip foundation. If the soil BC is very low, then you should provide raft foundation. 

for the water proofing you need a good material like 2 component polymer based solution or crystalline based material consult with an expert. i worked for 2 months in a water proofing company in DHA karachi.

You need 4 KSI and 60 grade steel bar. Steel bars detailing are based on loads and soil backfill dead load.

[Dik]

If subject to salt water, 4ksi concrete is likely at the lower edge for corrosion resistance.  Concrete cover to reinforcing is also very important and should be in the order of a couple of inches, and more, depending on the environment. You also want to minimise slump to get a good dense concrete.