Hand Drafting: Dimensions in a Floor Plan
Summary
TLDRIn this instructional video, Jaya reviews a class on architectural drafting, focusing on dimensioning techniques. She demonstrates how to add dimensions to a floor plan without touching the drawing itself, using extension lines and tick marks. Jaya emphasizes the importance of clear, non-confusing dimensions, showing how to measure and mark distances accurately. She also discusses the use of vellum for finished drawings and the practical application of these skills in construction, expressing enthusiasm for the drafting and building process.
Takeaways
- π The instructor, Jaya, demonstrates how to add dimensions to a floor plan drawing, emphasizing the importance of accuracy and clarity.
- π± Jaya mentions the limitations of drawing on a phone, suggesting that a computer or a more precise tool is preferable for detailed work.
- π To avoid confusion, dimensions should be placed separately from the main drawing, using extension lines and tick marks to indicate specific points.
- π Jaya uses a ruler to measure and mark dimensions, starting with an 1/8-inch tick mark and then proceeding to 1/2-inch and 3/8-inch marks for organization.
- βοΈ The instructor advises against erasing unnecessary dimension lines and instead suggests extending them to maintain clarity and accuracy.
- π Jaya discusses the process of dimensioning the outside of a building, highlighting the need for overall dimensions on each side unless they are identical.
- πͺ For window dimensions, Jaya uses a quarter-inch scale, which equates to one foot, to measure and mark the center of the window openings.
- π The text for dimensions should be placed above the dimension line without touching it, with other details centered for a clean presentation.
- π οΈ Jaya explains the practical application of these dimensions on a job site, where the center of the window opening is crucial for framing and installation.
- π The floor plan serves as a base for further drafting projects, including lighting and elevation studies, indicating a comprehensive approach to architectural design.
Q & A
What is the main topic of the video?
-The main topic of the video is teaching the process of adding dimensions to a floor plan in a drafting project.
Why does the instructor move the dimensions away from the drawing?
-The instructor moves the dimensions away from the drawing so that they are viewed as separate from the actual drawing itself, ensuring that the extension lines do not touch the drawing.
What is the purpose of tick marks in the dimensioning process?
-Tick marks indicate where two lines cross because when dimensioning, the point being dimensioned is defined by two lines that intersect, and the tick marks note where that point is.
How does the instructor measure the distance for the first tick mark?
-The instructor uses a one-inch ruler to measure away from the outside edge of the drawing and makes a tick mark at 1/8 of an inch.
Why does the instructor choose to start dimensioning from the outside edges?
-Starting from the outside edges helps the instructor get centered visually and ensures that the overall dimensions are placed accurately before moving on to more detailed dimensions.
What is the significance of not repeating dimensions?
-Not repeating dimensions is significant because it avoids confusion and ensures clarity in the drawing. However, when there are broken dimensions, the overall dimension is always included.
Why does the instructor turn the drawing upside down during the video?
-The instructor turns the drawing upside down to better access and measure certain dimensions without being obstructed by the scale or other objects.
What is the purpose of measuring the center of the window in the floor plan?
-Measuring the center of the window is to provide a reference point for the framing during construction, allowing for flexibility in window types and sizes.
What does the instructor mean by 'rough drawing' and 'finished drawing'?
-A 'rough drawing' is a preliminary version of the floor plan used for initial drafting, while a 'finished drawing' is a more detailed and polished version, often done on vellum, suitable for construction.
What is the instructor's attitude towards the drafting and building process?
-The instructor expresses excitement and enthusiasm for drafting, building, and finishes, indicating a passion for the subject and the process.
Outlines
π Introduction to Dimensioning in Architectural Drawing
Jaya introduces a review from a class on architectural drawing, focusing on the process of adding dimensions to a floor plan. She demonstrates how to create extension lines and dimension lines separate from the drawing to avoid confusion. Jaya explains the importance of marking points where lines cross to indicate specific measurements and emphasizes the use of a scale to ensure accuracy. She uses a one-inch ruler to measure and mark dimensions, starting with an 1/8-inch tick mark and then a 1/2-inch mark for the first dimension line. Jaya shows how to dimension the outside of the building and discusses the concept of not repeating dimensions unless necessary for clarity. She also mentions the use of vellum for finished drawings and expresses excitement about the drafting and architectural design project.
π Detailed Dimensioning for a Building's Floor Plan
In the second paragraph, Jaya continues with the dimensioning process, focusing on the interior of the building. She measures and marks the center of a window, explaining the use of a quarter-inch scale to represent feet. Jaya demonstrates how to dimension to the center of window openings and the end of walls, emphasizing the importance of balance in the drawing. She corrects her initial overestimation of needed dimension lines and adjusts her approach accordingly. Jaya also discusses the practical application of these measurements on a job site, explaining how they help with window framing and installation. She concludes by expressing her passion for building and framing and encourages students to look forward to learning more about drafting and architectural design.
Mindmap
Keywords
π‘Floor Plan
π‘Dimensions
π‘Extension Lines
π‘Tick Marks
π‘Scale
π‘Vellum
π‘Rough Drawing
π‘Architectural Design
π‘Elevation
π‘Window Openings
π‘Construction
Highlights
Introduction to adding dimensions to a floor plan drawing
Demonstration of how to avoid touching the drawing with extension lines
Explanation of the purpose of tick marks in dimensioning
Guidelines for creating extension lines and dimension lines
Technique for measuring and marking dimensions using a ruler
Importance of starting dimensioning from the outside edges
Principle of not repeating dimensions and when to make exceptions
Process of dimensioning both sides of a drawing for accuracy
How to measure and dimension window openings using a quarter-inch scale
Adjusting dimension lines for clarity and avoiding confusion
Technique for placing dimension text without touching the dimension line
Discussion on the importance of centering window dimensions for framing
Insight into the practical application of dimensions on a job site
Overview of the drafting project's progression from base drawing to finished drawings
Enthusiasm for the drafting and architectural design learning process
Anticipation for future lessons on lighting and elevation in architectural design
Encouragement for students to be excited about the learning journey
Reminder about the next class meeting time
Transcripts
hi there it's jaya just coming in to
give you a short little
review from our class the other day
i've used a drawing from my computer
it's the floor plan that we're working
on
and i went in and added dimensions the
way
you will be adding dimensions when you
get started
so i've started and i've done some of
the layout and then i thought
i would include you in the rest of the
layout
however i can't draw in all my my phone
which is my camera at the same time
so i'm going to kind of twist it up
let's see i can get this ended
i'm going to twist it and i'm going to
work over here
now i think i could even move the phone
so that is even more towards the center
okay
just to show you how this was uh laid
out
um what we want to do is move our first
dimensions
away from the drawing so that they
are viewed as
separate from the actual drawing itself
so
we don't touch the drawing with our
extension lines
am i outside the drawing yep i am okay
so you can see here we don't touch
the drawing with our extension lines
this is an extension line it extends
from the drawing
and it becomes the boundary
for your dimension line and these tick
marks
that you make free hand by the way not
with your
triangle those indicate where the two
lines
cross because whenever we're
dimensioning something
we are dimensioning to a point
a single point and that point is defined
by two lines that cross each other and
basically we're just noting where that
point is and we're giving you a number
to correspond with that point in space
so what i did was i started by taking my
scale
using my one just my regular one inch
ruler end of my scale
and i measured away from the outside
edge of the drawing
1 8 of an inch
so 1 8 of an inch i made a tick mark
where are my tick marks
there they are you can see them which is
not really
recommended but i can see mine so 1 8 of
an inch
down there then i went to one half of an
inch you want to kind of bring
the first group of dimensions away from
the drawing
so we go with a half an inch there and
then we
measure out 3 8
of an inch after that
and on and on now i did four but it ends
up that i'm really only needing
three dimen lines of dimension so i can
erase one of these so that i'm not
confused by it
i i could just not use it but i don't
want to confuse anyone so there that's
what i need
and like i i usually
like to start on the outside
edges putting in that first overall
dimension it just helps me get
centered visually because a lot of times
like i know where that line's going
because i've already marked the distance
so i can put in a good
line that means i can press hard on it
put in a good solid
line there and right here we're doing
the outside of the building again
and i've already created my boundaries
oops
there so now i have my outside dimension
line
for my overall dimension on this side of
the drawing
now we say never to repeat dimensions
but when you have
broken dimensions underneath a dimension
line you
always put your overall dimension so
i will always put two dimensions on each
side
unless the two sides are exactly the
same
so i'm just going to come in a little
bit what i'm doing is actually coming in
about that eighth of an inch
but i'm eyeballing it and i can put in
my
dimension line there see how they cross
at the corners
that's what you need them to do so now i
can use this lower line
as a guideline
for my text and i can just put
an eighth of a little dot there i do not
have my
lettering guide so i'm having to measure
all of this out
by hand but that that's where this would
go and this
is also the same as on the other side
and the overall dimension is 24
feet 0 inches
so i'm going to pull back the camera
[Music]
and come down a little bit and you can
see so
we have to dimension both sides of the
drawing
and now i'm going to further dimension
this side by going to
mark off the center of this window oops
over here i'm going to measure it and
quarter inch scale because this is
quarter inch scale equals a foot now i
can't move my scale up further again i'm
blocked
but i but when you're in quarter inch
scale
it becomes easier to uh
it's still blocked so i am going to turn
this upside down
i lied yeah
i got to get in there come on look i'm
moving my whole table now
hey girl's got to do what a girl's got
to do to get these
this measure so now let's get this
window measured miss rose
all right three feet so half of that
is going to be 18 inches which is one
foot six inches or one and a half feet
in quarter inch scale
and how do i know that i just do so i'm
doing this this
is to the center line so this is the
first line of
dimensioning because i'm going to the
window opening
and then i'm going to the next window
opening
and then i am going to
the end of the wall so in theory
i did not need three lines of dimensions
i really only needed
two and since i want it to stay balanced
i'm going to come back in here
you might see the top of my head right
now but i'm going to come back in
and extend that line
instead of erasing everything i can do
that easier than
erasing and then i know that my
coming down below that'll be the bottom
of my
guideline for my text coming down about
an eighth of an inch
and that's those are my dimensions now
i will not be using this first one
or the second one so you can see that
after all these years i still have to
sit and figure it out
and that's part of the reason why when
we will be calling your drawing when
you're finished with it it's actually a
rough drawing
if we wanted it to be a finished drawing
and we will be doing finished drawings
of this floor plan
we would be doing that on a sheet of
paper called vellum
and we will get there this is going to
be our base drawing
for our drafting project then our
lighting project
and then our elevation so we're going to
learn
everything everything there is to know
about drafting and
architectural design and building
a very simple structure and i'm pretty
excited about it so i hope you are
too um yes i would come back over here
then and i would add my
eighth of an inch and that with my
eraser because that would be
not the smartest move okay i'm gonna
pick up my correct pencil
and i'm gonna draw myself a few little
guidelines here so you see if you turn
your head to the left
this is your dimension line and your
dimension
text sits above that line but
doesn't touch that line you get my drift
and then everything else goes to the
center
and as i mentioned before different
window manufacturers different window
sizes different window types
will have and require different window
openings so rather than tell people what
this
opening should be we tell them where the
center of the window is
so that when they're laying out
the framing they can know where the
center lands and it really doesn't
matter whose window
is delivered to them because once they
find
what the rough opening of the window is
they can block it in
for that installation of that window and
that's
what happens on a job site and i hope
that you get to see that soon
i'm excited uh i love
i love framing i love building i love
finishes so
you will too i just know you probably
already do okay so
that's that and i'll see you in class
tomorrow in the morning
9 30. see you then bye
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