How frequent loads of type s mortar and sand to cover 60 square foot? How many stacks and how many yard of sand? Quarter inch...

How many stacks and how many yard of sand? Quarter inch on the back of the flagstone beside quarter inch gaps contained by between each stone.
In a room near "round" corner, how do...
Answers:    sand comes contained by 1 sq ft bags, try 10 stacks, of sand.
2 bags of mortar mix 1 shovel of mortar to 2 shovels of sand,