The house rests centrally on a plank 1 inch thick, 14 inches wide by 18 

 inches long, in such a position as to leave a space 3 inches \\-ide entirely 

 around it. 

 Problem. — Make a working drawing of the bird house shown on page i. Include : 



a) A top view, a front view, and an end view, drawn to a scale of \ inch to 



1 inch (one-fourth actual size). 



b) The necessary dimensions. 



c) A simple title (Bird House), and such brief notes as will inform the workman 



what materials are to be used, how they are to be fastened together, and 

 what finish you would suggest for the surfaces. Print carefully, using 

 some simple single-stroke free-hand lettering. 



The dimensions of the wedge shown below (in isometric i)rojection) are as 

 follows: The larger base is a rectangle 1 inch by 2 inches; the smaller base 

 is a rectangle | inch by 2 inches; the vertical distance between the bases 

 is l\ inches. The ends are equal and parallel trapezoids, and the side 

 faces slope equally. 



a) Draw the horizontal and vertical projections (top and front views) of the 



wedge (actual size) in the follo^\^ng position: its larger base is uppermost 

 and \ inch below the horizontal plane of projection; one corner of this 

 base is in the vertical plane of projection, and the longer edges of the base 

 make 30 degrees with the vertical plane of projection. 



b) Find the true shape of the section cut from the wedge by a plane which 



passes through its exact center. The cutting plane is perpendicular to 

 the horizontal plane, but makes 60 degrees with the longer edges of the 

 base of the wedge (30 degrees with the vertical plane). 

 (SEE NEXT PAGE) 



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