Engineering Graphics 2018-19-I Lecture 19 TA101A Engineering Graphics 2018-19-I By Dr. Mukesh Sharma Professor DEPARTMENT OF CIVIL ENGINEERING INDIAN INSTITUTE OF TECHNOLOGY KANPUR KANPUR-208016, INDIA

Intersection of a line and plane – EV method TL 2A 5H 1A 1H H 5A F 1F 2F 2’F 4F 5F 3F Intersection of a line and plane – EV method

Intersection of Lines and planes – Cutting Plane Method XH 2H YH 1H 5H H F 1F YF 4F 2F 5F XF Check visibility 3F Intersection of Lines and planes – Cutting Plane Method

Intersection of two planes – Edge View Method TL 7H 1A 4H’ 5A 1H H A 5H H 6F F 1F 4F’ 4F 2F 5F 3F 7F Intersection of two planes – Edge View Method

Intersection of two planes – Cutting Plane Method XH RH 2H YH 4H 7H SH 1H 5H H F 6F 1F YF SF 4F 2F 5F RF XF 3F 7F Intersection of two planes – Cutting Plane Method

Example: Two Planes given – third plane perpendicular to two planes 900 B1 A1 R1 TL Q1 P1 QT CT BT RT 1 DT d H PT AT H F BF PF d DF AF QF CF RF Example: Two Planes given – third plane perpendicular to two planes Draw its Top View if front view and a point n top view given – What is the concept?

Normal view of solid surface Direction of normal view Horizontal Plane Profile Plane Frontal Plane Applications – Inclined/Oblique Surface on object Obtain true shape of surface and if necessary project its (inclined plane) features on top and front views

Simple problem of inclined surface B-D B D Simple problem of inclined surface

C D B A C Normal View D A Direction of Normal View B AC A C D BD B

DE A EV 1 CB H Distance from H transferred here C 1 D 2 D TL TL C B E E H F Distance from 1 transferred here Normal View (TS) B C B E D

Example: True shape of oblique surface and concept of Reference plane 1 R1, 2 R1 3 5 4 EV 4 R2 3 5 1 2 H R1 H' R1' 1 H 2 3 4 5 TL H F 1 2 3 4 5 H Reference plane,R1 Example: True shape of oblique surface and concept of Reference plane