CONCRETE MATERIALS
6. Portland Cement

a -Pertland cement shall be.of American manu-
facture. and shall conform to the "Standard Specifications
for Portland Cement" (Serial Designation C9-30) of the
American Society for.Testing Materials.

7. Concrete Agprepates

a. Concrete Aggregates shall consist of nat-
ural sands and gravels, crushed stone, blast furnace slag,
or other.approved inert materials having clean, uncoated
particles of strong and durable minerals. Aggregates shall
meet the requirements of the Tentative Specifications for
Concrete Aggregates of the A.SsT.M. (Designation C33-30T)

b. Size. Coarse aggregates shall range in size
from one quarter (1/4) inch to the maximum size used but shall
not exceed 1 inch in diameter. Fine aggregate shall range in
size from fine to coarse within the limits indicated below,
percentage by weights:

POGGINS TAVGNG BO. © Cl eV Gs 66s eee cieewks ese L008

j -(Not more than 30%
Passing through No. 50-sieve (Not. less than 10%
Passing through No.100 sieve,
When.scueened.dEy.-cenétheetellot mope-than- 4<:4%
Volume removed by sedimenta-
Pie kas oss eek eek eg 6a 4s OG MOPS these 3%

8. Water

a. The water used in mixing concrete shall be
clean, and free from acids, alkalies, excessive sa Ltay, O54
or organic materials.

DIMENSIONS AND DETAILS OF CONSTRUCTION
9. Design

a. The constructiion.of the courts shall con-
form to the shape, lines and dimensions as called for on the
plans. Where the specifications and the plans conftleict,\the
specifications shall be taken as the authority.

b.. Slope. Ome Gourt. The court Shall be given
a slope of three (3) inches from one side to the other.

ce. , Slope. ..Two,,Gourts,..:sEBach court.shall be
given a slope of three (3) inches, from the longitudinal expan-
gion joint between the two eourts, to the ontside of- each
Cours .

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