Projections Of Straight Lines Inclined To Both The Reference Planes Youtube Get complete concept after watching this videotopics covered under playlist of projection of points and lines: basic concepts projection of lines and most im. A straight line ab of 40 mm length has one of its ends a, at 10 mm from the hp and 15 mm from the vp. draw the projections of the line if it is parallel to the vp and inclined at 30° to the hp. assume the line to be located in each of the four quadrants by turns. (example) 30° x y a b a´ b´ 1 5 1 0 14 parallel to vp and inclined to hp 30.
14 Projection Of Lines Inclined To Both Reference Planes Problem 1.inclination of it’s surface with one of the reference planes will be given. 2. inclination of one of it’s edges with other reference plane will be given. (hence this will be a case of an object inclined to both reference planes.) surface & side inclination given on next page. • when the line is parallel to both hp and vp, there will be no traces on the said planes. therefore the traces of lines are determined in the following positions of the lines. lines perpendicular to one plane and parallel to the other. lines inclined to one plane and parallel to the other. lines inclined to both the planes. The lines p′q′ and pq are the required projections of the line pq inclined to both the planes. 17. draw the projections of a straight line ab 80 mm long inclined at 45° to the hp and 30° to the vp with the end a in the hp and the end b in the vp. the elevation a′ of the end a will be on xy. the plan b of the end b will be on xy. A straight line is placed with reference to the planes of projections in the following positions. 1. line perpendicular to hp and parallel to vp. 2. line perpendicular to vp and parallel to hp. 3. line parallel to both hp and vp. 4. line inclined to hp and parallel to vp. 5. line inclined to vp and parallel to hp. 6. line inclined to both hp.
Projections Of Straight Lines Inclined To Both The Planes 06 Eng The lines p′q′ and pq are the required projections of the line pq inclined to both the planes. 17. draw the projections of a straight line ab 80 mm long inclined at 45° to the hp and 30° to the vp with the end a in the hp and the end b in the vp. the elevation a′ of the end a will be on xy. the plan b of the end b will be on xy. A straight line is placed with reference to the planes of projections in the following positions. 1. line perpendicular to hp and parallel to vp. 2. line perpendicular to vp and parallel to hp. 3. line parallel to both hp and vp. 4. line inclined to hp and parallel to vp. 5. line inclined to vp and parallel to hp. 6. line inclined to both hp. Its horizontal trace (ht) and vertical trace (vt) are in a straight line perpendicular to the reference line x y, as shown in fig. 10.2. the elevation, b ' c ', and plan, ab , of the square are both straight lines coinciding with vt and ht, respectively, i.e., vt and elevation, ht and plan overlapping. Projections planes 235 (c) when a plane is perpendicular to one of the reference planes and inclined to the other, its inclination is shown by the angle which its projection on the plane to which it is perpendicular, makes with xy. its projection on the plane to which it is inclined, is smaller than the plane itself. problem 12 1.
Projection Of Straight Lines Inclined To Both Planes Example 1 R Its horizontal trace (ht) and vertical trace (vt) are in a straight line perpendicular to the reference line x y, as shown in fig. 10.2. the elevation, b ' c ', and plan, ab , of the square are both straight lines coinciding with vt and ht, respectively, i.e., vt and elevation, ht and plan overlapping. Projections planes 235 (c) when a plane is perpendicular to one of the reference planes and inclined to the other, its inclination is shown by the angle which its projection on the plane to which it is perpendicular, makes with xy. its projection on the plane to which it is inclined, is smaller than the plane itself. problem 12 1.
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