Converting Inches to Feet in a Floor Plan Scale

[Bruno1]

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!

 

[kaliprasad]

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

 

[I like Serena]

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.