How to place ore cart for maximum amount in 18 by 18?

[Opywang]

I have screen shot and I see that it's gonna have a huge gap where i can't walk are there a faq about how to place the ore cart for maximum that can fit in an 18 by 18?

I'm trying to figure out how much an 18 by 18 can hold the ore cart so I can debate if I want to buy ore cart to fill out the house with.

 

[Bama]

3rd you use 3 gozas to support the 3 tiles of the mining cart image. Add the first cart then raise the gozas 3xs each. You can repeat this 6xs per stack. Sometimes on the last stack when you go to chop the gozas it will say target can't be seen. Simply lower them 1x then chop the gozas to begin the next stack.

The above is taken from this link

http://www.uogamers.com/community/index.php?threads/568364/