How to Draw Orthographic (Right Angle) Projections

Step-by-Step Guide

1. 1

   Step 1: Record information about the object or structure that you want to describe in an orthographic drawing.

   This means getting the accurate measurements of the length, width, and height as well as noting the various shapes.
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   Step 2: Determine what scale (1/4

   The average paper size would be approximately 30"X40". , Make sure the table has a straight edge on the left and bottom sides of the table. , Be sure and use proper measurements and line weights to show proper proportion and depth. ,,, Do this for any other reference points that you may have on the right side of the plan. , This will be your base guideline for the other two elevation drawings. , The triangle should be approximately 4 inches (10.2 cm) from right side of paper. , This will become your far right reference point for the right side elevation drawing.
   
   Make sure you use a soft lead. , This is your left guideline for the right elevation drawing. ,,,, Draw right elevation plan. ,, This is the left reference guideline for the front elevation drawing. ,,, This will complete process of completing a Orthographical Projection drawing.
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   Step 3: etc...) your drawing is going to be

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   Step 4: because this will determine what size of vellum paper you need to have for the drawing.

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   Step 5: Find a table large enough to secure the entire paper on by using drafting dots.

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   Step 6: Draw an overhead view (plan) of the object or structure in the upper left hand corner approximately 4" from top and 4" from left side.

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   Step 7: Take a T-Square and place the guide bar on the left side of the table and align the straight edge with the top reference point of the plan.

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   Step 8: Use a soft lead and draw a straight line from the top right reference point to the right side of the paper.

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   Step 9: Move the T-Square to the bottom right reference point and repeat step 6 by drawing a guideline across the paper.

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    Step 10: Take the T-Square and place it approximately 4 inches (10.2 cm) from the bottom of the paper going left to right draw a light line across the paper.

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    Step 11: Take a 12 inch (30.5 cm) 90 degree triangle and align the edge with the most upper line so that the triangle is pointing downward in a 90 degree angle.

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    Step 12: Draw a line from the upper guide line towards the bottom of page.

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    Step 13: Using the measurements from the right side of the overhead plan

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    Step 14: measure the same distance from right to left.

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    Step 15: Repeat step 11 for all other guideline pertaining to right elevation drawing.

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    Step 16: Now take your architectural or engineer scale and align it with the right guideline and with the zero being placed on the base guideline.

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    Step 17: Now make small tic marks on the line for the height measurements of both front and right elevation plans.

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    Step 18: Using the guidelines that you have drawn

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    Step 19: you can now mirror the right side of the object/structure.

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    Step 20: Now take your T-Square and place the guide bar on the bottom of the table and align the straight edge with the bottom (front) left side of the overhead plan.

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    Step 21: Draw a light line downward until it hits the base guideline.

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    Step 22: Move the T-Square to the far right bottom (Front) reference point of the overhead plan and draw a light line from this point downward until it hits the base guideline.

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    Step 23: Use the T-Square and finish making the remaining reference guidelines as explained in steps 16-18.

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    Step 24: Now use the reference tic marks you made for the height in step 14 and finish drawing the front elevation plan.

Detailed Guide

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