The Coconino sun. (Flagstaff, Ariz.) 1898-1978, 1916-06-16

All cement sidewalks hereafter con-
structed shall be built under the
supervision and control of the Super
intendent of Street of the said Town
Of Flagstaff; or his duly authorized
Representative, and according to the
following specifications and requires
ments.
a. Walks built in the business
district shall be built to the curb line.
b. The outer edge Of the cement
walks in the residence district shall
be five ~ feet from the street line
and parallel to said street line, unless
otherwise directed by the Superin-
dent of Streets; the walk to extend
continuously from the street line to
the outer edge and not to be more
nor less than five (5) feet in width.
C. The outer edge Of the curb
shall be placed ten (10) feet from the
street line in both residence and bust
ness districts.
d. The curbs at alleys and street
corners shall turn in and extend to
the walks, and walks at such corners
shall extend to the curb to meet the
street or alley crossings, unless other
wise directed.
e. Stakes shall be set by the Town
Engineer to define the edge Of the
walk with grade marked thereon to
indicindicate the top Of the finished
walk, which shall be furnished without
cost by the Town. All walks to have
slope toward the curb Of one-quarter
(A) inch to the foot.
I. All walks at alley crossing shall
be constructed so as to give free in
gress and egress to the alley and flush
with the top Of the adjoining walks.
g. Openings for drainage shall be
left under all alley crossings where
necessary; the sizes Of such openings
to be decided by the Town Engineer.
FOUNDATIONS:
All materials excavated in con-
structing the foundations shall be
classified as earth, loose rock and
solid rock, and the prices bid for these
classes Of excavation, and for the en-
bankment necessary to bring the side
walk foundation to the proper SUBJ
grade, shall apply to all work neces-
sary for the proper grading of the
foundations.
Where considered necessary by the |
Town Engineer, some points mate
rial, such as gravel or cinders, shall |
be used to bring the foundation up to
the proper sub-grade, and proper
drainage provided for the same.
All foundations shall be cleaned of |
all trash and vegetable matter, and |
thoroughly rolled or tamped and
dampened before placing any concrete
upon the same.
RETAINING WALLS:
Where considered necessary by the
Town Engineer, stone or concrete
retaining wall shall be built to retain
the sidewalk foundation.
CEMENT
The cement used shall be Portland |
cement and must conform to the re-
quirements and be subject to the tests
as set forth in Specification No. ID,
Of the Town Of Flagstaff.
FINE AGGREGATE:
Fine aggregate shall consist of sand
or screenings from hard, durable
crushed rock or gravel consisting Of |
quartzite grains or other equally hard
material, graded from fine to coarse,
with the coarse particles predominant
ing and passing, when dry, a screen
having one-quarter (k) inch open
ings. 1t shall be clean, free from
dust, vegetable or other deleterious
matter, and all fine aggregate con-
tanning more than five (5) per cent
clay or loan shall be washed before
using.
COARSE AGGREGATE:
Coarse aggregate shall consist of
clean, hard, durable crushed rock or
gravel, graded to size, free from dust,
loan, vegetable or other deleterious
matter, and Of such sizes as to pass a
two and one-half (2h) inch round
opening and to be retained on a screen
having one-quarter ~ inch open
ings.
NATURAL MIXED AGGREGATE
Natural mixed aggregate shall not
be used as it comes from deposits, but
shall be screened and used as speci-
fed.
WATER:
Water shall be clean, free from acid,
oil, alkali or vegetable matter.
FORMS:
Forms shall be we'll built, substantial,
unyielding and properly braced and
shall conform to the lines given by the
Town Engineer.