Stacking corner blocks. How can I make a mistake on a 20 mm?

Since the construction of their own handsI thought that would be something to go wrong and there may be some alteration. I think that this is normal in any new business, and above all to draw correct conclusions, to learn from mistakes.

But not everything goes right the first time ...

This case, I remember exactly because there were mistakes that I have made, but apparently poorly I learned.

After laying shutoff waterproofing on the foundation, I was to the next stage - This installation of the first row of aerated concrete. And first of all it was necessary to lay the corner blocks.

The correct geometry of the house.

For a start it was necessary to mark the correct position of the blocks.

1. Taking into account all the errors, I have measured the(As I did, available here: the geometry of my foundation ...) I just set up the blocks in the corners, so that all dimensions of the sides and diagonals are correct.

2. Then, on the faces of these blocks prichalku-stretched cord, which are guided by, and will subsequently be placed on the blocks already dissolved.

Level.

Here, I made all the mistakes, which led to disastrous results ...

First of all, I decided to put the blocks on the level with a laser solution.

Although there was an option to use gidrouroven, but with him anymore problems and fuss.

A Laser is simpleOnly to see the beam normally have to wait until the sun starts to settle.

There was, perhaps, the main mistake:

I was going to to do everything quickly and easily in a new reality for yourselfBecause there was a time limit (quickly darkened).

I have already "stepped on the rake" When I poured foundation.But apparently it was not enough ...

Waiting for the moment when the laser beam is normally seen, I started to put the first unit. Immediately faced with the nuances of which in movies like "how easy it is to build a house", does not say.

• The solution was kneaded movable too, so that under the weight of the unit he travels.
• Since aligning one horizon, other options left.
• And while everything was done slowly and uncertainly.

In general, some of the first unit I installed. Now it is making a start it was necessary to put him more.

And here I go wrong deciding to go in a circle.

Ie each next block, I exhibited starting from the previous level.

In this case, the speed and skill in working with mortar and leveling blocks I did not add. Eventually, I installed the latest in a particular dark.

Exhaling, and delighted that all the "could", I decided to check the level of the last and the first block ...

Honestly, I'm not that surprised. I just... Very surprised!

The difference was 20 mm. How could this be? Of course, I thought that I can be mistaken for a couple of millimeters, but that such a difference.

Even in the dark, walking on the foundation and thinking what to do, I decided to once again try on all the blocks.

The difference between the neighboring was 1-2 mm. Even if I was wrong all the time in one direction, it is still 20 mm could not possibly accumulate.

So I still sin on the accuracy of the laser level.

And for myself I realized that exposing the level, you need to start from a single point. Even if you make a mistake once, it will not affect other dimensions. It just fits gidrouroven.

Eventually...

I just had to put up with all of your posts, correct them and move on. Of course it hurt so much, be carried and as a result do not understand exactly what the particular error. Though, probably, everything is a little played a role. Now it is the second take, I hope the extreme. :)

Despite this outcome, the day for me was not in vain.

We make mistakes, learn, go ahead...