216 FOKESTKY WOKK 



NUMBER OF WIRE NAILS PER POUND. 



DRAINING NOTES. 

 NOTES RE DRAINING TILES. 



Area of circle .... 

 Circumference .... 

 Diameter x -8862 

 Diameter x -7071 

 Radius x 6-28318 



square of diameter x -7854. 

 diameter x 3-14159. 

 side of an equal square, 

 side of an inscribed square, 

 circumference. 



NATURAL SLOPES OF EARTH WITH HORIZONTAL 

 LINE. 



Gravel average 



Dry Sand average 



Sand average 



Vegetable earth average 



Compact earth 



Shingle 



40 

 38 

 22 

 28 

 50 

 39 



Rubble 



Clay, well drained 



Clay, wet 



Peat, loose 



Peat, firm 



45 

 45 

 16 

 15 

 45 



