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Hello everyone.  Last time, in our February article, we introduced the condition of a housing land plot which had been cleared for new construction work.

This project is to build a new/replacement house which will continue to be used for rental to U.S. military-related customers.  The land plot has an area of 78 tsubo (approx. 2775 square feet) and the new house will have a total floor space of about 59 tsubo (2063 square feet).

First, here is what it looks like now.

This was how it used to look...

... And this is how it turned out!

Although the weather was unstable in April, the foundation was successfully completed.

In this article, we would like to show you how the foundation was built!

It will take only a few minutes to view the content, so if you like, please read it through to the end.

First of all, we successfully completed the "Ji-chin-sai" ground-breaking ceremony...

The concrete-related formwork is set up.

(The foundation was already completed when we went to see it.)

Once the formwork is in place, then the concrete is poured)

It takes a total of three people to complete the job: one person in the mixer truck and two people pouring the cement material into the formwork!

Of note, the concrete that is being poured is also carefully checked for quality.

Details of on-site cement inspection:

- Salinity

- Air content

- Slump (softness when pouring)

- Particle size, etc.

The construction workers will take these six concrete samples back to the office and check their strength after they have hardened.

They will do this after one week and then again four weeks later.

I was surprised to see that there were many more items to check than I had imagined.

◎ We can rest assured that the testing will produce objective results.

A liquid called “Tenba (top edge) leveler” is applied on top of the concrete which had just been poured.

※ I heard the leveler liquid being called “Tenba”.  I kept hearing and asking about it over and over again -- sorry.

Because it is a highly fluid and adaptive cement-based liquid, it is used to create a flat top surface.

↓ It looks like water, with the impression of being much softer or malleable than concrete.

In fact, if a measurement was off by even 5 mm, the carpenter would notice and point it out.

Apparently, this is a very important point to prevent the house from warping, as the timber will be placed here.

・ Steel rod to hold the wood in place.

・ Top edge height reference/marker (yellow)

This is what it looked like after the cement was poured and hardened.

The top edge marker is neatly level/filled in.

Once the poured leveler has hardened, the formwork/frames are removed to complete the process!

The foundation is perfectly laid.

Also, by the way...

There is a room foundation with a light blue frame.

This is the bathroom, and it appears to have been renovated to improve insulation.

Thank you for reading this far.

What do you think?  In this article, we looked at the basics of foundation-laying work.

There have been surprisingly few articles covering this topic written by our company, but I was able to really feel its importance.

Thank you to Mr. K, the foundation contractor who taught me so much, and to the inspector who explained to me about concrete inspections.

I hope you'll check back for the next update.

Finally, we would like to show you a beautiful park in the Mabori Kaigan 1-Chome neighborhood.  Here is what it looked like in late April...

We will assist you in stable real estate management by combining our know-how and experience with house manufacturers, construction firms, and other companies with a proven track record of doing business and assist you according to your needs.  Please feel free to contact us.

https://www.iino.cc/blog/8413/