A Street Tree System for New York City 67 



4' x 6' 2" in area. The outer or street edge of this opening 

 shall he one foot from the outside edge of the sidewalk curb. 

 The margins of the opening thus made shall be finished in 

 a workmanlike manner. 



Note. — The size of the opening is such that a standard 

 grating can later be installed if needed. 



(b) The detail requirements regarding sub-soiling, ferti- 

 lizer, tree, guard and stake shall be as stated in Planting 

 Specification No.l. 



Where the surface of the tree pit is to be paved with 

 brick the following requirements shall apply. 



(c) Brick Surface 



The opening in the pavement over the area of the pro- 

 posed tree pit shall be of the size shown on the accompany- 

 ing drawing illustrating " Planting Specification No. 2, 

 with brick surface." 



The surface of the pit shall be paved with hard burned 

 vitrified standard size brick laid upon a 2-inch layer of clean 

 coarse sand. The bricks shall be laid with a half-inch 

 joint and in the manner shown on the drawing and the 

 joints shall be filled with sand. 



A tile and dry well shall be provided to supply irrigation, 

 located and constructed as shown on the drawing. 



Estimate : 



Excavating and sub-soiling $6 00 



Cutting and trimming pavement 2 00 



Tree delivered 1 50 



Stake 50 



Guard and attachments 1 00 



Planting and miscellaneous labor 1 00 



Cultivation and replacements until tree 



is established 3 00 



with gravel surface $15 00 per tree (a) 

 Brick surface 5 00 



with brick surface $20 00 per tree(b) 



