1. Engineering Graphics 2018-19-I
Lecture 16
TA101A
Engineering Graphics I By
Dr. Mukesh Sharma
Professor
DEPARTMENT OF CIVIL ENGINEERING
INDIAN INSTITUTE OF TECHNOLOGY KANPUR
KANPUR , INDIA

2. Method of Rotation

3. Frequency Distribution of Mid-sem Marks

4. P bH aH A aF bF F H I B
Go Around and see through plane in which the oblique line will appear parallel
And that is your auxiliary plane on which projection of line will be in TL

5. Line of sight (normal to plane)aH bH A aF H F U P I T ai B
True Length (TL) bF bi R S
Line of sight (normal to plane)

6. B C D E A H F bH bF aH aF H F bH bF aH aF H F bH bF aH aF H F bH bF aHI H F bH bF aH aF E I d aI TL H I
Line of
Sight bI A

7. bI bH TL aI aH H F A1 aF bF

8. bH aI aH d1 TL H F d1 aF aP I bI d2 P d2 bF bP F P

9. Slope of a Line Think of standing on ground parallel to a flyover
EDGE VIEW OF HORIZONTALCEILING
EDGE VIEW OF HORIZONTAL GROUND
Y=RISE
X=RUN C D TL H H F
Think of standing on ground parallel to a flyover
Run/Rise = Y/X = tanθH
θH is slope angle of line CD
tanθH ×100 is called grade of line (+/-)
Can only be seen when line appears in TL and view showing the height

10. aH aF bH bF H I
X=10
Y= - 4.9 TL aI bi
H= - 260

11. Bearing of Line Quiz Can be seen only in …………view
N600 W
N300 E
S 450 W D A C B E
Quiz
Can be seen only in …………view
Should line be in TL?
Ans. Horizontal
Not necessary

12. Azimuth of line

13. Point view of a line Line of sight a2b2 bH d 2 H 1 I aH bI TL H aI FaF bF

14. TL 2H 3H TABLE TOP TRUE SURFACE 1H 4H Line of sight for H view 1F2F
Edge view 2H 3H 1H 4H TL H F
1F2F
2F3F

15. True Shape of Plane through EV and Auxiliary Plane
SA1 A A 1 S 2 H S A2 A1 EV XH F R X A1 , R H A1 X P A2 TS H H R F A2 P S A1 F P A2 XF TL P F RF

16. True Shape of Plane through EV and Method of Rotation1 RH XH
XA1, RA1 PH H
P‘A1 F S F' P A1 S F XF P TS F P F' R F
True Shape of Plane through EV and Method of Rotation

17. True Shape of Plane through EV and Method of Rotation1 RH XH
XA1, RA1 PH H
P‘A1 F S F' P A1 SF
90˚ XF P TS
90˚ F
PF’ R F
True Shape of Plane through EV and Method of Rotation

18. 2H TL 3H 4H 3B H 3F IH 3A F 2F 4F 2B H TS A IF IA IB