48 ANNUAL REPORT 
brand of American Portland cement to three barrels of lime. First, mix the 
Portland cement with four parts of sand, mixing the sand and cement 
thoroughly. Second, the lime mortar should be sanded to the right con- 
sistency to make a good, rich mortar. Third, mix the sanded cement with the 
lime mortar as it is used. It will take a very little mixing to make a fina 
tough mortar.” 
CEMENT STUCCO FOR WALLS. 
Mr. Van Hook also gives the following instructions for cement 
stucco: 
“First coat, one-half inch thick. For best results, the wall should be 
furred off with spruce lath put on vertically, 12 inches apart and well nailed. 
On these fasten firmly, expanded metal lath. Add fibre to the mortar for 
lathwork. Wet thoroughly the surface to be plastered. Mix one part of 
non-staining Portland cement with two parts medium sand, one part fine 
sand and one-half part lime flour. When this coat has set hard, wet the 
surface thoroughly and apply the second coat with a wooden float. 
“Second coat, one-quarter inch, thick. Mix one part cement as above, 
one part fine sand and two parts medium sand or crushed granite. Before the 
second coat has set hard, it may be jointed to present the appearance of stone 
work. A small addition of lime flour increases the adhesion of the mortar. 
“The finished surface should be protected for ,at least two weeks with 
canvass curtains or bagging saturated with water. 
“Defects are liable to appear on cement plastered walls when (1) too 
much cement is used; (2) not applied with sufficient moisture; (3) not 
troweled sufficiently; (4) not protected. from variations in temperature and 
drafts of air.” 
Cement. manufacturers publish the following table of areas covered 
with Portland cement mortars of various proportions per barrel of Port- 
land cement used: 
TABLE 16. 
Showing Area Covered by Mortar Produced from One 
Barrel Portland Cement. 
Composition of Thickness of | Sq. Ft. of Area 
Mortar. | Coat. | Covered. 
1 ine | 67 
1 Cement 1 Sand Sh oi | 90 
| wy wt | 134 
eee | 104 
1 Cement 2 Sand Shanes 139 
Ve 208 
ss 140 
1 Cement 3 Sand Shain: 187 
IZ ot 280 
