Calculating area

[Ukndoit]

Not sure this is the right place... Sorry if not.

Say someone wanted to build a 10,000 square foot parking garage.

In a rectangular equal size.
With 4 foot thick walls and a 2 foot thick slab and 2 foot thick ceiling.

With support concrete posts that were 2ft squares every 40 feet.
Not counting the support beams.

How would one get the total square feet of concrete needed?

I am sure there is some advanced math equation that would come up with an estimated number.

This is a sample scenario, I am not looking to build any type of parking garage.

I was just talking to my sons about it and none of us could figure out how to figure it out.

 

[Deleted member 4993]

Not sure this is the right place... Sorry if not.

Say someone wanted to build a 10,000 square foot parking garage.

In a rectangular equal size.
With 4 foot thick walls and a 2 foot thick slab and 2 foot thick ceiling.

With support concrete posts that were 2ft squares every 40 feet.
Not counting the support beams.

How would one get the total square feet of concrete needed?

I am sure there is some advanced math equation that would come up with an estimated number.

This is a sample scenario, I am not looking to build any type of parking garage.

I was just talking to my sons about it and none of us could figure out how to figure it out.

First - draw a sketch of the foot-print (without considering walls, etc.) of the garage -

what are the length and the width of the garage?

Then take out the area for the walls from the foot-print (Generally garages do not have walls - so that cars can drive in & out)

Then place the concrete posts on the foot-print.

Continue...

If you are still stuck - come-back (with the picture of the sketch) and explain exactly where you are stuck.