Architectural Dimensioning
Part 2
Masonry/Concrete Construction
Interior Dimensioning
Floor-Plan Dimensions
Dimensioning
system
Aligned
dimensioning--dimensions are placed in line
with the dimension lines and are read from the bottom
or right side of the drawing sheet
Dimension
lines are solid (Thin) and not broken
Dimensions are placed above dimension lines
approximately 1/16” above line
All dimensions are 1/8” high, use guidelines
Aligned
Dimensioning
Example
Note:
Dimensions readable
from the bottom of
sheet and right side
of sheet above the
dimension line
Writing the Actual Dimension
Feet and
Inch/fractions:
Even feet no
Feet and
inches:
zero inches/fractions:
6’-7 1/2”
4’- 0”
8’- 0 3/4”
Writing the Actual Dimension
No
feet only inches:
10”
No
feet only inches/fractions:
8 1/2”
Only fractions of
an inch:
3/4”
General Rules to Follow for
Placing Dimensions
Place exterior dimensions
outside the floor
plan, starting with the smallest first, then subtotals
and finally overall totals
dimensions inside the floor plan in
string fashion. Several strings may be required
both horizontally and vertically
Place interior
Spacing of Dimensioning Lines
First string of
dimensions are usually placed
about 3/8” to 1” from the object depending upon
the amount of space available
Second string of dimensions are placed 3/8” to
1/2” from the first string of dimensions
Additional strings of dimensions are spaced like
the second string of dimensions
Arrows or Terminators
For
class project use diagonal lines for all
dimensioning terminators
Use arrows for all leaders and callouts
Making Arrows for Leaders
Arrows
for dimensions and leader lines should be
the same
Arrows usually have a set proportion and have a
slender look to them
1/8” to 3/16”
1/32” to 1/16”
Making Tick Marks for
Terminators
Commonly
1/8” long at 45 degree
Usually done freehand
A thick slash is common
on manual and CADD
drawings
Freehand slash all in
the same direction
Dimension Procedures
Dimensions are
placed on the drawing are dependant
upon the type of material the walls are constructed of:
1) Frame or wood studs
2) Brick or stone veneer over frame
3) Solid masonry and cast concrete

Discussion today includes 3
and Interior dimensioning
Solid Masonry and Cast Concrete
Common
6”,
wall thickness for cast concrete:
8”, 9”, 10”, and 12”
Typical residential practice for concrete wall
thickness:
for
frame walls use 8” concrete foundation
Project Sizes
for veneer/frame walls use 10” concrete foundation
Solid
masonry walls will vary to the actual
structural need of materials used
Solid Masonry and Cast Concrete
The procedure with
this type of construction:
dimension to outside surfaces and to openings in
the construction
Foundation
Plan
Dimensioning
Example
Notice:
1) Door openings
2) Column/Beam
representation
3) Footings (Dash)
4) Notes on DWG.
Interior Walls & Partitions
Typical interior walls
are drafted 5” but are
actually 4 1/2”
When dimensioning to interior walls the common
practice is to locate the center of the wall
Generally the placement of interior dimensions is
along a string of dimensions going the full length
or width of house
Interior Dimensioning
Assumed
locations of
features without
dimensions given
Standard features
dimensioned with
a note
Dimensioning the Interior of the Plan
 Locate
the center
of interior partitions
with short extension
line
 Place short
extension line at
exterior face of stud
(exterior walls only)
 Place
string of
dimensions locating
these features
Interior Wall Dimensioning Example
Dimension Exercise #2
 Follow
all rules as
they apply:
 #1—Dimension
exterior horizontal
only of the
concrete floor plan
 #2--Dimension
interior
horizontally and
vertical then
Dimension
exterior horizontal
2
Example of Dimension Exercise
 Remember:
 Place
dimensions in
string fashion
 Face of stud
exterior walls
 Center of
interior walls
 Add extension
lines and tick
marks
First--Work on Dimensioning Exercise
Second—Work on Project Floor Plan