Wireless router connection

I have a wireless router I’m trying to set up. I work in a warehouse and I’m trying to connect to a PC about 20 yards away. I know it should work, but the problem is the concrete walls. Is there a possible way for the other PC to detect the the wireless connection? Or is there something I can do make this possible.

Add another access point about halfway between the router and computer. This can be set to pick up and boost the signal so that the computer can receive it without any trouble.

you might be able to boost the antenna power. otherwise you will probably have to settle on getting a second router like sazae said. walls = gg, especially 20 yards away.