Student handout modules 4 & 5 - amended

LREC 2015 Mandatory CE
Course Developer: Cheryl B. Bella, MAI, AI-GRS 1
MODULE 4
Measurement Tools & Technique
TOOLS TO MEASURE AND
COMPUTE AREA
Pencil
Clipboard
Tape Measure (100’ calibrated in tenths)
Graph paper
Calculator
May use laser on certain measurements
Why do we need a tape measure?
To get the length and width of the walls from
the outside.
This allows us to compute area.

Outside – rain or shine!
Where to write measurement?
Measure on the outside = write dimension
on the outside
Measure on the inside = write dimension on
the inside, knowing that conversion to exterior dimensions
is necessary to comply with ANSI
Best practice: Measurement centered
The formula for the area of a
rectangle is ?
Length X Width = Area
Feet X Feet = Feet Squared
(Square Feet)

Length
WidthLength X Width = Area
35’ 6”
33’6”
Compute the area of this box
Convert inches to tenths
6 inches = 0.5 tenths
12 inches
or ½ of a foot

TENTHS RULE!!!
1’ 1” 2” 3” 4” 5” 6” 7” 8” 9” 10” 11” 2’
1’ .1 .2 .3 .4 .5 .6 .7 .8 .9 2’
35.5’
33’.5’
35.5’
33’.5’
Area =
1,189 feet squared

A tape measure calibrated in tenths
does not require the conversion
This is much more efficient!
ANSI Standard: Rounding
Each wall dimension may be rounded to
the nearest tenth
First place value after the decimal
The final square footage is reported to the
nearest whole square foot
Graph Paper
Enables you to draw to scale
Recommend 10X10
1 square = 1 foot
Bold line to bold line = 10 feet
Fast and efficient!

Establish Point of Beginning
One Possible Technique:
Solid Wall = Solid Line
Living Area
Garage
Storage
No Wall = Dashed Line
Porch/covered patio
Carport
Drawing TAUR – Begin with
Living Area
42.5’
84’
Living Area
Write dimensions where pulled
42.5’
84.0’
Living Area
<42.5’

Drawing TAUR – add a garage
42.5’
84.0’
42.5’
18’
Living Area
Garage
22’
Drawing TAUR – add a storage
42.5’
84.0’
42.5’
18’
Living Area
Garage
22’
Storage 9’
15’
Drawing TAUR – add a porch
42.5’
10’
9’
84.0’
15’
84.0’
21’
42.5’
18’
Living Area
Garage
Porch
Storage
22’

Drawing TAUR – add a carport
42.5’
10’
9’
84.0’
15’
84.0’
21’
42.5’
18’
20.5’
Living Area
Garage
CP
Porch
Storage
22’
Measurement Process
Perform a walk-around
Determine how to hold clipboard
Look for hazards
Determine where to set point of beginning
Place street relative to point of beginning
Best to begin at front left corner and proceed
counter-clockwise (to the right every pull)
Prior “Market” Definitions
Finished
Heated and Cooled
Habitable
Contiguous
Measured from the outside

Finished
Consistent finishes throughout
Example: Good quality house with a
recreation room addition of inferior quality
finishes. This is not “living area”.
Heated and Cooled
ANSI is a national standard. It does not
address ventilation. This is addressed by
the general market. Treat heating/cooling
as a quality of finish. Remember
consistency.
Habitable
Livable and accessible
Example: Room on third floor accessible from
a ladder in a closet is not considered
“habitable”

Contiguous
Per ANSI, “Finished areas that are
connected to the main body of the house
by other finished areas such as hallways
or stairways are included in the finished
square footage of the floor that is at the
same level.”
Contiguous
Finished areas that are not connected to
the house by other finished areas cannot
be included in the finished square footage
at any level.
Per ANSI,
Finished Area is computed for each level
(areas of the house that are vertically
within 2 feet of the same horizontal plane)
Make a distinction between finished above
grade and finished below grade
Ventilation and lighting are not specified
requirements of the ANSI standard – refer
to market standard

ANSI Ceiling Height
Requirement
Finished Areas must have a ceiling height
of at least 7 feet, except under beams,
ducts, and other obstructions where the
height may be 6’4”
If Ceiling slopes, ½ of ceiling height must
be at least 7 feet
No portion of the finished area that has a
height of less than 5 feet may be included
in finished square footage
30’ Base 30’ Base 30’ Base
= =
3 Houses = Covered Base

30’ Base 30’ Base 30’ Base
5
= Not =
3 Houses = Covered Base, with ceiling height restriction
7’+7’+
STAIRS
Stair treads are included as “walkable”
area of the ascending story, provided that
the opening in the floor does not exceed
the area of the stair treads.
Exception to the 5’ ceiling height – stairs
are included even through they slope
below 5’
UP
Stairs fill the entire “well”
They are included in 2nd floor finished area

UP
Open to
Floor Below
Stairs DO NOT fill the entire well
Only portion with treads is included in 2nd floor finished area
MODULE 5
Measurement Computation and
Measuring Unique Structures
STEPS TO COMPUTE AREA
Measure the Structure
Convert any Interior Dimensions to
Exterior Dimensions
Square the Structure
Divide Structure into Geometric Figures
Label, then Compute the Area of each
Figure
Sum it up!

Measurement Reliability
Measure in accordance with the standard
May use plans/prior drawing as a guide,
but must verify
May outsource measurement, recommend
contract with qualified ANSI standard
knowledgeable person
Caution: Cloning an old listing – you are
liable!
Squaring the Structure
STEPS FOR SQUARING THE
STRUCTURE (L=L and W=W)
Set up four columns: Front Side (FS), Back Side (BS), Left Side
(LS), Right Side (RS)
Tally the dimension in the appropriate column along the designated
side
Front should equal Back, if no adjustment(s) needed
Left side should equal Right side, if no adjustment(s) needed
applied
GOAL: Prove the structure to be mathematically squared, or FS =
BS and LS = RS
Once squared
You can continue manually
You can put field drawing into a drawing
program

Check Squaring on this
structure
RESULT: The property is proven to be mathematically
square, area calculation can begin. Draw your rectangles.

Let’s compute!
What if it doesn’t square
ANSI allows you to round to the nearest
tenth. Provided adjustment is minimal
(within a tenth) you can adjust the length
of a wall up or down to produce a
mathematically squared structure.
Compute: AREA by AREA
Remember: Begin with Living Area
Then compute other areas, area by area

Let’s take a look at
unique structures
Bay Window
2 story

HOW TO MEASURE AND COMPUTE
THE AREA OF
A BAY WINDOW
BAY WINDOW CALCULATION
BAY WINDOW – 3 geometric figures

BAY WINDOW
Two triangles and one rectangle
What is the formula to compute the area of
a triangle?
BAY WINDOW
Base X Height
2
or ½ of a rectangle
BAY WINDOW

BAY WINDOW
Measure Mirror Image – Outside!
Inside House
Outside House
BAY WINDOW
Inside House
Outside House
BAY WINDOW
6
5
40’

TWO STORY
STRUCTURES
Perfect Two Story
Acadian Style
Two story structure examples
32
34

32
34
How thick is the wall?
32
34
Adjustment factor = 0.8/wall
0.8
+0.8
1.6
32
34
Adjustment factor = 0.8/wall
0.8
+0.8
1.6
35.6’
33.6’

COMPUTE AREA
Length X Width = Area (SF)
1A) 35.6’ X 33.6’ = 1196 SF
Total Living/Finished Area = 1996 SF
Let’s try one!
40’
25’
1st Level
40’
25’
2nd Level
Wall thickness adjustment = 0.8’/wall
18.4’
14.4’

40’
25’
2nd Level
Cl.
Bedroom
Bath
Cl.
Bedroom
14.4’
18.4’
40’
25’
2nd Level
18.4’
14.4’
40’
25’
2nd Level
18.4’
14.4’
20’
16’

40’
25’
2nd Level
18.4’
14.4’
20’
16’
20’
9’
40’
25’
1st Level
1A
40’
25’
2nd Level
18.4’
14.4’
20’
16’
20’
9’
2A
2B

COMPUTE AREA
Length X Width = Area (SF)
1A) 40’ X 25’ = 1000 SF
2A) 20’ X 16’ = 320 SF
2B) 25’ X 20’ = 500 SF
Total Living/Finished Area = 1820 SF
ACADIAN STYLE
Second story built in roof line.
Little can be determined by outside inspection.
The “Acadian” House is the Most
Difficult!
1st Floor
2nd Floor

DEMONSTRATE THE ACADIAN!
Let’s draw an interior wall on your second
story.
2nd Story with Interior Wall
2nd Floor
Interior Wall to Interior Wall
2nd Floor
a.

Interior Wall to Interior Wall
Adjustment
2nd Floor
+2
a.
Interior Corner to Interior Wall
2nd Floor
b.
Interior Corner to Interior Wall
Adjustment
2nd Floor
0
b.

Interior Corner to Interior Corner
2nd Floor
c.
Interior Corner to Interior Corner
Adjustment
2nd Floor
-2
c.
Visual of Interior Measurement
Adjustment to Exterior Measurement
2nd Floor
a.
b.c.

Visual of Interior Measurement
Adjustment to Exterior Measurement
2nd Floor
+2
-2 0
a.
b.c.
Convert Interior to Exterior
Interior Wall to
Interior Wall
Interior Corner to
Interior Wall
Interior Corner to
Interior Corner
Add 2 wall
thicknesses
No adjustment
necessary
Deduct 2 wall
thicknesses
a.
b.
c.
CONDOMINIUM

What is a condo?
Can you tell it’s a condo from its
name?
How do you measure a Condo?
MEASURE A CONDO
Chateau Rouge Condos
Unit D
MEASURE A CONDO
INTERIOR WALL TO INTERIOR WALL
Chateau Rouge Condos
Unit D

How to get a copy of ANSI-Z765 –
http://www.homeinnovation.com/about/bookstore
Phone Number – (800)638-8556
THE END!
THANK YOU FOR YOU TIME
AND DEDICATION TO THE
REAL ESTATE INDUSTRY IN
LOUISIANA

Student handout modules 4 & 5 - amended

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Student handout modules 4 & 5 - amended