 Hello friends, myself Sanjay Murt, assistant professor of mechanical engineering department of Walsh and institute of technology, today I am going to explain the orthopedic projection of a simple object. In the last video I am explaining regarding the basic things. The learning outcome for this pro object is to be student will able to draw the orthopedic projection of a simple object, this is a simple topic for this one, simple object is placed in front of you and this is the arrow in the direction of arrow x you have to draw the front view, how to draw the front view, you have to check that which plane in that direction of x which plane are parallel to you and before that first you have to check the maximum dimensions, so with respect maximum dimensions we make some rough idea for that, so what is the maximum you have to start with this one, the maximum length is 100 mm and the maximum height is 75 mm, 100 by 70, you have to start with this plane this 100 and the vertical height is 70, but this is inclined portion up to here it is from the top end it is 16 1, 16 minus sorry 15 1, 15 minus 70 that is a 60 mm, so you have to vertically travel 60 mm. Then what is the vertical height of this one, it is given here it is a 22 mm, so travel 22 mm and this end is to be again it is a it is a 22, but this slab width is 15 mm, so to travel 15 mm, so this shaded portion which is parallel to you you have to draw as it is, then this inclined portion is to be there, which portion is inclined this I am showing this red color retrain is there, but it is perpendicular to what is the vertical height total height is it is given as 75, so travel this much length and extend that is the square block is to be there, so these two for surface are there, there is one more supporting rib is to be there and the rib starts from here here it is given as 40 mm, so it is a 40 mm and ends where how much it is total length is 70, from this end it is a 30 mm, so to travel 30 mm in this direction and where it starts it starts here, so join it this portion is to be there, so this what you call this portion I am showing here, so this is the front view, so when you to draw this front view when you to draw the front view one more what you call age or surface which is hidden one it will not seen in the front view which one this surface, this surface and this surface there is a guide way for this one, so this plane is to be here up to here, but when I to see from the front view it is hidden invisible one, so you have to think over that how to draw this hidden portion the hidden line the hidden age the hidden surface, so the hidden surface you have to shown the hidden surface is shown as a line as a dotted line, so there are two surfaces this age is there this age there, but this is exactly behind of that, so you have to draw one dotted line where it starts from top starting to end surface one and what is the vertical height it is given as 12 mm, so from the 12 mm you have to draw the dotted line from start to end one, this is all about the front view what is the remaining this age is this age and the dotted, now you are a observer is here you have to rotate it through and see that object from the top, when you to see from the object from the top view length is already given that is 100 mm this one and what about the width width is given as 64 mm, you make a square block of this one draw the draw the respective generators fine generators okay and 60 here you have to draw first draw a center because center line is very important when you to draw the next view or in the orthopedic projection center line is from the center in whatever the dimensions whatever the generators whatever the measurements you have to calculate that is related to the center line, so what is the width 64 mm you have to travel 32 mm and 30 above and below, so draw in it, so to make block for this one, then what you see from the top view this surface this red one again in the front view it is inclined you have to same as a compressed rectangle or inclined rectangle is to be there again same portion on the other side right side is to be there what is the width and this portion, so there are when I to see from the top view there are three rectangles the first rectangle second rectangle and third rectangle, so what are the dimensions it is given as from the center line it is it is given as 16 mm, so from the both end it is 16 and 16 and what is the width width is already given here, so you draw the three rectangles, so this portion is to be now what about this rib this rib when you to see from the top view again it is not a perpendicular one this portion is to be there 12 mm rib supporting rib is to be there where it starts it start here and ends up to here here it is ends what is the width 16 mm 12 mm, so travel 6 mm and 6 mm both are side 6 mm and 6 mm and join it, so this is a top view but one more portion one more view we have to draw it some portion is missing is here which portion is missing here again it is a guide way this guide way is to be there when you to see from the top view this edge is there where it this edge this is the first edge it start to end the second edge start to end the third edge it is bottom one again it is start to end, so there are four, so when you to think for that how to draw this hidden portion, so this hidden portion when you to draw in the top view when you to show that hidden portion is to be there that is a dotted one then check the dimensions for that what is the dimensions the top one is 64 mm and this one is a 30 mm, so from when it is a 30 mm travel 15 mm and 15 mm both sides this is 20 mm draw the dotted line from start to end one because this hidden portions hidden edge hidden plane hidden line that is to be shown by a dotted line as per our conventions the line convention showing in the first video the dark line dotted line center line one more two edges are there that is at the bottom what is the width it is to be given when you to go for this is 60 degree when you to calculate this one it is a 18 mm 9 mm you have to travel a port 9 mm travel in the downward one again it is start to end one this is a hidden edge it is at the bottom surface okay now whatever the planes are parallel you have to draw as it is the planes which are inclined that lanes are shortened one and some hidden portions are there that hidden portions you have to draw with a dotted one this is all about the front view and the top view so later one you have to go for the side view in the first we have explaining about side view draw the respective generates of the front view draw the respective generators of the top view with metal rotating 45 degree the intersection lines you have to project it and think over that which is a draw as a dark line and which is a dotted line so this is all about the ortho projection of the front view and the top view thank you