Construction is a very complex and lengthy process and should be handled very responsibly! On the construction site, all conditions must be created for the builders to work comfortably.
Equally important is always protecting your building materials. The guard is not suitable for these purposes because he can fall asleep and your building materials will be stolen. It is much better to protect your building materials with a fence or welded wire mesh. I did this when I had to build a house. As a result, nobody stole my building material.
To protect my materials I used manufacturing welded wire mesh

It is quite simple. You can find calculator for calculating the required blocks in the Internet. I can recommend to use ConCalc services, they provide many professional calculators. Here is a link for you - size of the wall.

How do I calculate the numbers of blocks in a building? What can I use?