T-4 DEVELOPMENT & INTERSECTION
A pipe with a diameter of 50 branches into a pipe with a diameter of 40 at an intersection angle β, and the intersection position is as
specified in the question. (45’, 50’, 55’, and 60’)
Top
View
Front
View
The steps for drawing: (use tools)
1. Prepare a white A3-sized paper complete with the Drawing
Header !!!
2. Fill in the Drawing Header completely, including projection
symbols;
3. Draw the axis and the 50 mm diameter pipe as seen in the
drawing;
4. Draw the intersection axis at an angle β with the 40 mm
diameter pipe;
5. On the Front View drawing, sketch the surface of the 40 mm
pipe with an appropriate length, at the end draw a thin auxiliary
circle for the Top View drawing in point 7 & 8;
6. On the Top View drawing, determine the intersection position
with the 40-channel and draw lines for the surface of the
channel and identify the intersection points;
7. Based on the Front View drawing of the 40 mm pipe in point 6,
sketch the top view of the shape of the end surface of the 40
mm pipe, utilizing point 5;
8. Using the auxiliary circle in point 5, draw auxiliary lines
parallel to the S-40 axis;
9. From the intersection points of the surface in point 6, draw
vertical auxiliary drawing lines downwards until they intersect
with the auxiliary lines in point 8;
10. Identify these intersection points and draw intersection curves
by connecting these intersection points;
11. Based on the steps above, draw the span of the two pipes.
No
FOCUS OF EVALUATION ACHIEVEMENT
METHODS AND DRAWING PROCESS
1 1 Drawing Paper Format & Reference Arrows
a. Border Lines of Drawing Sheet (DS)
b. 2D Axis Reference Lines on DS Border
c. Reference Arrows for Drawing on DS Border
T-4 DEVELOPMENT & ITERSECTION
ACUAN EV.DIRI ASSDOS NILAI
-25
-10
-5
-10
2 Drawing Format, Line Thickness & Drawing Header Content -40
3
4
5
6
7
8
9
10
11
12
13
a. Drawing Header Format - line thickness
b. Completeness of drawing reference information
c. Writing with Upright/Italic Letters/Numbers
d. Standard Projection Symbols for Drawing Reference
-10
-10
-10
-10
Lettering of Dimensions & Detailing
Use of Drawing Tools / Freehand Drawing
Arrangement of Drawings & Free Space between Drawings
Drawing Axes & Initial Reference Points
Creation of Circles & Auxiliary Drawing Lines (ADL)
Graphical Identification of ADL Intersection Points
Connection of ADL Intersection Points into Target Shape
Creation of S-50 Span Profile
Creation of S-40 Span Profile
Presentation Style & Size Compatibility
Ability to Explain the Drawing Process
-10
10
5
10
15
10
10
10
10
10
10
100