CONSTRUCTION NOTES 287 



long, 30 inches high and varied from 18 inches thick at the bottom to 13 

 inches at the top. The surface of the stone on the exposed face of the wall 

 was left rough. The time required was for one linear foot of the wall .61 

 mason hour plus .69 labor hour and for one cubic yard was 4.68 mason 

 hours plus 5.28 labor hours. 



Dry stone wall on concrete footing. This wall was 50 feet long and 

 approximately six feet high. It was two and one-half feet thick at the 

 bottom and battered to 18 inches thick at the top. The stones used varied 

 from two inches thick and 18 inches long to four inches thick and 20 inches 

 long. No cement was used, but there was a filler between the stones made 

 up of stone chips together with gravel and topsoil. Three stone masons 

 and three helpers worked on this job and the average time required for one 

 cubic yard of masonry in place was 4.1 mason hours and 4.3 helper hours. 

 To complete one cubic yard of finished wall there was required approxi- 

 mately 1.5 cubic yards of loose stone. 



Cutting and laying coping on dry stone wall. This coping was cut from 

 two and one-half-inch buff sandstone flagging split in layers in the quarry. 

 There were two widths, 14 and 20 inches. The coping was laid in concrete 

 mortar. The stones varied from 1 8 to 36 inches long. There were 65 linear 

 feet 20 inches wide, and 97 linear feet 14 inches wide, thus making in all 

 162 feet. Two stone masons worked together, one cutting and one laying. 

 The average time required for one linear foot of coping was for cutting 

 .26 hour and for laying .23 hour. 



Hollow tile wall surfaced with stucco. This wall was built of tile 5 x 12x8 

 inches on a concrete base. The piers were built of 2% x 4 x 8-inch tile. 

 The time required to lay up the hollow tile was one mason hour for each 

 14 square feet of wall. On straight work a mason could lay up 120 tiles per 

 hour. A coping of stones four feet by one foot by four inches was laid on 

 top of this wall (five feet high) by one mason and one helper at the rate 

 of four stones per hour. A stucco composed of 24 shovels of sand to one bag 

 of Portland sand and one bag of white cement was applied one inch thick. 

 The first coat was applied by four men and two helpers at the average rate 

 of 5.66 square yards per man hour. The finish coat was applied by the 

 same crew at the average rate of 4.2 square yards per man hour. 



Exterior plaster work. A plasterer should apply a scratch coat at the 

 rate of ten square yards per hour with one laborer helping him. Browning 

 coat should be applied at the rate of eight square yards per hour. Three 

 laborers can tend four plasterers. On a sand finish two plasterers should 

 apply a rough cast finish at the rate of four and one-half square yards 

 per hour with one laborer helping. When applying a rough cast finish direct 

 to concrete wall a plasterer should apply four square yards per hour. 



