904 ANNUAL REPORT 
The specifications in use in Peoria, Ill., are as follows: 
SPECIFICATIONS FOR CEMENT WALKS AS USED BY DEPARTMENT OF PUBLIC 
WORKS, PEORIA, ILLINOIS. 
J. Location——-The sidewalk herein specified shall be constructed on...... 
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2. Width and Sflope.——The walk shall be ................ feet wide, with 
a transverse slope of one-third of an inch per foot toward the gutter, and shail 
be laid to the lines and grades given by the City Engineer. 
GRADING. 
3. Sub-grade.— The ground shall be excavated to a depth of twelve (12) 
inches below the surface of finished walk, and the surface of the sub-grade 
shall be thoroughly and evenly tamped with an eighty (80) pound tamper. 
4, Excavation.—In places where cutting is necessary to bring the walk 
to the required grade, no plow shall be used below a line three (3) inches 
above the surface to which the sub-grade is to be graded. The remaining 
three (3) inches to be carefully dressed off with picks or other hand tools. 
5, Fill,—Wherever fill is required, it will be made with any suitable ma- 
terial excavated from this improvement. Should such suitable excavated ma- 
teria] not be sufficient to make the necessary fills, the Contractor will be 
required to procure material acceptable to the Engineer. All filling shall be 
made in uniform layers not to exceed four (4) inches in depth, and each 
layer shall be thoroughly flooded and rolled, or tamped as may be directed 
to insure a solid bed. 
6. Removing. Soft Materials.—All mud and other soft or spongy material 
or any material that cannot be made solid and compact, shall be removed and 
the places refilled with gravel. 
7.: Flooding Sub-grade, —When considered necessary to procure a com- 
pact and solid sub-grade, the ground, before being rolled, shall be thoroughly 
flooded with water in such a manner as the Engineer may direct. 
FOUNDATION. 
8 Cinders or Sand.—Upon the sub-grade prepared as above will be 
laid a foundation course eight (8) inches thick of sand or cinders, which shail 
be flooded and thoroughly rolled or tamped in such a manner as to procure 
a compact and solid foundation. 
9, Concrete. —Upon this sand or cinder foundation a conerete foun- 
dation three (3) inches thick after being compressed, shall be laid. 
10. Proportions. —The concrete shall be composed of one (1) part, by 
bulk, of best imported Portland cement, three (3) parts, by bulk, of clean, 
sharp sand, and five (5) parts, by bulk, of broken stone or gravel. 
JJ. Intention of Proportions——The proportions herein specified are in- 
tended to produce a concrete in which the mortar will fill all the voids, and the 
proportions will be so adjusted that when rammed in place free mortar will 
flush to the surface. 
