MHB Converting Inches to Feet in a Floor Plan Scale

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The discussion centers on converting measurements from a floor plan where 1/8 inch equals 1 foot. The user measured a room at 2.6875 inches in length and 1.3125 inches in width, calculating the dimensions to be 21.5 feet by 10.5 feet, resulting in an area of 225.75 square feet. However, the architect indicated the room's area as 3,032 square feet, leading to confusion. Responses confirm that the user's calculations are correct, suggesting that the architect may have made an error in the scale or area representation. The conversation highlights the importance of accurately interpreting architectural scales and measurements.
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I have a floor plan where 1/8 inch = 1 ft. The architect labeled the square footage in each room, but not the measurements from wall to wall, so I measured with a ruler and now I'm having a difficult time converting from inches to feet. I'll use one rectangular room as an example.

View attachment 2172My measuremeants were
Length = 2.6875 inches
Width = 1.3125 inches

I thought I should multiple by 8 to solve for feet. This would give me
Length= 21.5 ft
Width = 10.5 ft

That would mean the area of the room is 225.75 sq ft (10.5*21.5), but the architect wrote that this room is 3,032 sq ft.

Where am I making a mistake, in calculating the conversion from inches to feet, calculating the area, or reading the conversion key?

Thank you in advance!
 

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Bruno said:
I have a floor plan where 1/8 inch = 1 ft. The architect labeled the square footage in each room, but not the measurements from wall to wall, so I measured with a ruler and now I'm having a difficult time converting from inches to feet. I'll use one rectangular room as an example.

View attachment 2172My measuremeants were
Length = 2.6875 inches
Width = 1.3125 inches

I thought I should multiple by 8 to solve for feet. This would give me
Length= 21.5 ft
Width = 10.5 ft

That would mean the area of the room is 225.75 sq ft (10.5*21.5), but the architect wrote that this room is 3,032 sq ft.

Where am I making a mistake, in calculating the conversion from inches to feet, calculating the area, or reading the conversion key?

Thank you in advance!

you are not making a mistake the calculation is perfect in each step. The architect is doing a mistake.l
 
Welcome to MHB, Bruno! :)

Indeed, your calculation is fine.

Looks like one of:
  • the scale was really 30 feet to an inch,
  • the area of 3032 square feet is of a larger area than you think,
  • the area of 3032 square feet is plain wrong.
 
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