LECTURE
CONTENTS4.3:-IMPORTANCE OF DRAWING
CONTENTS
• Revision of Scales
Building Design & Drawing • Planes & Views
CEL 215 • Importance & Requirements of Drawings
• Type of Drawings
PPT-2
LECTURE
BASICS 4.3:-IMPORTANCE OF DRAWING SELECTION OF SCALES
SELECTION OF SCALES
• Selection of scale depends on the degree of accuracy
required of scaled distance in preparing drawings.
• Largest scale conveniently possible shall be adopted
• All important dimensions should be explicitly indicated on
SCALES
the drawing so that the work may be executed without
(Covered in previous lectures)
resorting to scaling measurements from the drawings
• As a rule scaling for determining dimensions should be
discouraged
3 4
3 4
LECTURE 4.2:-IMPORTANCE
SELECTION OF SCALES OF DRAWING SELECTION OF SCALES
Cont… SELECTION OF SCALES (Revision)
• Typical methods of expressing numerical scales on drawing Question:
are as follows Building Block is 5m x 10m.
1cm = 10 meters (or 1000cm) 1:1000 Select a suitable scale for drawing on A4 Sheet
1cm = 2.5 km (or 2,50,000cm) 1:250000
1) For working drawing plans, Elevations, Sections: For 5m on 200mm side of A4 sheet = 1:25
1cm = 2m (1:200) , 1cm = 1m (1:100), 1cm= 0.5m (1:50) For 10m on 300mm side of A4 sheet = 1:33.33
2) For large scale drawings – general drawings: Select the smaller scale = 1:33
1cm = 20cm (1:20), 1cm = 10cm (1:10) Select further smaller scale for incorporation margins
3 Enlarged details: Final Scale = 1:40 or 1:50
1cm =10cm (1:10), 1cm =5cm (1:5), 1cm = 2cm (1:2),
1cm =1cm or full size (1:1) 5 6
5 6
1
SELECTION OF SCALES SELECTION OF SCALES
SELECTION OF SCALES (Revision) SELECTION OF SCALES (Revision)
𝐷𝑟𝑎𝑤𝑖𝑛𝑔 𝐿𝑒𝑛𝑔𝑡ℎ Question:
𝑆𝑐𝑎𝑙𝑒 =
𝐴𝑐𝑡𝑢𝑎𝑙 𝐿𝑒𝑛𝑔𝑡ℎ Building Block is 25m x 100m.
Select a suitable scale for drawing on A4 Sheet
For 25m on 200mm side of A4 sheet = 1:125
For 100m on 300mm side of A4 sheet = 1:333.33
Select the smaller scale = 1:333
Select further smaller scale for incorporation margins
Final Scale = 1:400 or 1:500
7 8
7 8
SELECTION OF SCALES SELECTION OF SCALES
SELECTION OF SCALES (Revision) SELECTION OF SCALES (Revision)
Question: Question:
Building Block is 25m x 100m. Building Block is 25m x 100m.
Select a suitable scale for drawing on A2 Sheet Select a suitable scale for drawing on A1 Sheet
A2 sheet Size: 400mm x 600mm Approx. A1 sheet Size: 600 mm x 850 mm Approx.
For 25m on 400mm side of A2 sheet = 1:62.5 For 25m on 600mm side of A2 sheet = 1 : 41.6
For 100m on 600mm side of A2 sheet = 1:166.66 For 100m on 850mm side of A2 sheet = 1 : 117.6
Select the smaller scale = 1:166 Select the smaller scale = 1 : 117.6
Select further smaller scale for incorporation margins Select further smaller scale for incorporation margins
Final Scale = 1:200 Final Scale = 1:200 or 1:150 (not a std. scale)
9 10
9 10
850mm LECTURE
BASICS 4.3:-IMPORTANCE OF DRAWING
1:117
(Touches the sheet boundaries
No Space for Title Box & Notes Bar)
TYPE & THICKNESS OF LINES
1:200
600mm
(Covered in previous lectures)
1:100
`
(Bigger in size than 1:117) 12
(Goes outside the sheet boundaries)
12
2
LECTURE 4.3:-IMPORTANCE OF DRAWING
BASICS LECTURE 4.3:-IMPORTANCE OF DRAWING
BASICS
DIFFERENT PLANES
SYMBOLS FOR MATERIALS
(Covered in previous lectures)
Fig.4.4:DIFFERENT PLANES
13 14
13 14
LECTURE 4.3:-IMPORTANCE OF DRAWING
BASICS
SIDE VIEW
TOP VIEW or
or SIDE
PLAN VIEW ELEVATION
IMPORTANCE & REQUIREMENTS OF
FRONT VIEW
or
DRAWING
FRONT
ELEVATION
15
15 1
6
IMPORTANCE & REQUIREMENTS OF DRAWING LECTURE 4.1:-IMPORTANCE
IMPORTANCE & REQUIREMENTS
OF DRAWING
OF DRAWING
• Drawing is the language of engineer • Drawing should be carefully preserved after the
• Drawing represents reduced shape of structures and the construction is completed.
owner visualizes what is going to happen. • A two storied building may require further extension up to
• The owner gives his requirements and accordingly three stories after a long period. But in order to assess
drawings are prepared. the admissibility of further loading the previous approved
• Any change, modification, addition or omission is drawing are to be referred for foundation strength.
possible from a study of drawing. • Drawing is an essential contract document.
• To know the estimated cost and quantities of material • Detailed drawings are prepared before actual execution
approved drawings are essential. and given to the contractor.
• Drawing provides instruction and guidance to Architects • It should be clear simple and clean.
and Engineers and workmen at field to construct the • Should be accurately drawn so that scaled
structure according to the dimensions shown in the measurements agree with figures and should be free
drawings. from repetitive details.
17 18
17 18
3
LECTURE 4.1:-IMPORTANCE
IMPORTANCE & REQUIREMENTS
OF DRAWING
OF DRAWING DIFFERENT TYPES OF DRAWINGS
• Should give the exact information so that work can be DIFFERENT TYPES OF DRAWINGS
carried out at site without scaling for missing
measurements.
• Neatness, ability for co-relative details and their • Preliminary drawing
arrangement in a logical sequence are required.
• Notes on the drawing should be held in the minimum • Working drawing
required space to support the drawings.
• Location drawing
• Ample space should be provided between views to
permit placing of drawing without crowding. • Submission Drawings
• The arrangement of all views should be done by
providing uniform clear space around these views.
19 20
19 20
LECTURE 4.2:-IMPORTANCE
DIFFERENT TYPES OF DRAWINGS
OF DRAWING LECTURE 4.2:-IMPORTANCE
DIFFERENT TYPES OF DRAWINGS
OF DRAWING
PRELIMINARY DRAWING WORKING DRAWING
• Preliminary drawing are neat and proportionally • This is a set of drawing required for the execution of the
works.
dimensioned sketches, not to scale prepared to serve as • For building construction this includes foundation plan,
a basis for more definitive drawing showing the plan of different floors, roof plan, longitudinal and cross
section, elevations, architectural and structural details
designer’s general intentions. Changes in the layout of including details of reinforcement completely
rooms doors, windows, or any part can be done before dimensioned and bearing all the indications required for
construction
exerting labor at this stage.
• In this working drawing the site plan and general
drainage arrangements are also provided.
21 22
21 22
LECTURE 4.2:-IMPORTANCE
DIFFERENT TYPES OF DRAWINGS
OF DRAWING LECTURE 4.2:-IMPORTANCE
DIFFERENT TYPES OF DRAWINGS
OF DRAWING
LOCATION DRAWING SITE PLAN
• Location drawing includes • Plans use to locate the positions of the site in relation to
1) layout plan neighboring street: the name of the street in which the
2) site plan building is proposed to be situated, if any means of
• Layout plan: Layout plan are drawn to identify site in access and general layout of the site.
relation to town plan or other wider context. • In this site plan orientation of the building along with the
• Layout plan shall be drawn to a scale of not less than north direction line is shown.
1:500. • The position of water and sewer lines inspection
• The north direction line is specially shown in the corner chamber etc. may also be provided in the site plan.
of the layout plan. • In the working drawings site plans are drawn by a line
• Layout plan is required to be submitted along with the diagram to a scale of 1cm=5m to 1cm=40m.
building plan to obtain sanction form the municipal
authority.
23 24
23 24
4
DIFFERENT TYPES OF DRAWINGS
LECTURE 4.4:-IMPORTANCE
BASICS OF DRAWING
PREPARING SUBMISSION DRAWING
• These drawings are drawn to the scale 1:100 and
include
1) Different floor plan
2) Elevations
3) Sections
4) Location plan
5) Site plan
6) Schedule of doors and windows
7) Area statement and block plan
8) Construction notes
25
25
