The Caucasian. (Shreveport, La.) 1900-192?, 1903-06-07

| for concrete. will be swept over the sur
| face II will then be thoroughly COM
pressed &ith . steam collier giving a
weight pressure a nca less than 1,5
pounds ser linea' nlch d roller; abe
rolling Being continued until the ulti-
mate sompressiop mas eesufted aud che
ipawinerN surface is perfectly even and
/ t1ue for es1e fcQnireA form Aor the sOaa-
way. All aorso1n % the pavemesa SUI
Iface inaccessible to the rolldr will 10
compressed by taalrgns ga s1noothed
with ho9 rC@s
The SproaGins ar@ rolling Of the as
ohalt pavcnc11 mi Nsur8 Glust &Oioa DE
delivery as raoid'v as practicable, with
the use 90 suNtabIe appliances amp the
employment . a sufficient number of
skilled eGek1nen
NAcn laiG as hereinbeNGs 8ecBes
the asphalt paNsm9s Oil Dc regarded
as con1plls'e1.
s.. R 1na0rial arg vCak N connec-
Ition with Ne fo@1dation and prtdbaaa-
ton and layine % asphak eavener9
hereinbt9 spec,hed vit9 o. subject %
inspection, dirsctica aH6 appsusal OF che
[city cdancl o. as dsls a,shnized agent
40 ;dss sime 90 place ~here arg eass %
tlt "O1K SBldy We u p4OSftSS
Sdopted by 4oHowing sdA:
Ayes: Amen, Busbey, Cursse, N&soA
FosseS. Fe1tkins. Ledbetse1, lowenthal
'Ouioles, Rand Sayds, ThosRA Tas
ten, Mise
| Nays: Nora
Iva'de speolhsassons sess ssaa o
follows:
RASlNG NFTH gsALDE IS
s6.-Fo,ndaion: She sartB 8punga-
ton On sub-grade gilt be Srouglr q.
an ssen surface. earallg with che grade
proposes 6aF Che pavement, Ny s1aklng
the accessory eNcavatiON at e1nbank-
mersss and N1e excess dirt or any other
material toe any other qlateeials, rock,
gravel or hmbess Aom excavation
shall belong - the city and he delivered
at any "oine within 2ooe feet from linn
its of contract as may be designated by
the enginees and improvement commit.
tee.
Soft or spongy earth, os othes mate.
rial not 'affording a firm foundation, will
be removed. and the space filled with
sound stone or other material broken as
specified for concrete. which shalt be
soliditied by ramming or solling as here
matter provided.
The sub-grade surface will be COM
pacted by rolling with soller operated
by steam power, which, will give a
weight pressure Of not Tess than 200
pounds per lineai inch of roller. Any
portion not accessible TO the roller shall
be thoroughly compacted by ramning.
When the rolling and ramming shall be
done the surface shall be true and
smooth and 9 I-2 inches below the pro-
posed finished surface of the pavement.
57.-Upon the foundation as above
prepared will be laid bed Of cement
concrete six inches in thickness to be
composed by measure as follows:
If Portland cement is used one part
cement, four parts sharp sand, reason
ably clear from loan, dirt and other for
eign matter, said reasonable clearness,
etc, to be determined by the city en-
gineer and Improvement committee, and
eight parts clear broken, dust cleaned
dust screened Stag.
If Hydraulic cement is used one part
cement, two parts sharp sand. reason
ably clear from loan, dirt and other for
eign matter, said reasonable clearness.
etc, to be determined by the city en-
gineer and improvement committee. and
five parts clean broken dust screened
stone or clean washed gravel Or clean
dust screened Stag.
The cement and sand to be thoroughly
mixed together dry. to which only suf-
fclent amount of water will be added to
produce mortar of proper consistence
when thoroughly mixed. In to this fresh
mortar the stone, or gravel or Stag, wet.
but containing no water in the heap,
will be mixed. Each batch OF concrete !
will be thoroughly mixed, the mixing 70
be continued on the board until each
niece of stone, gravel or Stag is COM
Dletely coated with mortar: it will then
be spread and at once thoroughly COM
pacted by ramming until free mortar ap-
nears upon the surface. The whole ope-
ration Of mixing and laying each batch |
will be performed as expeditiously as
POSSIBLE with the use Of sufficient num-
Der of skilled men.
SIZE OF STONE.
5S.-Tfe fragments of crushed or
broken stone, gravel or Stag shall meas
ure not more than I-2 inches on their
longest diameters. The upper surface
exactly parallel with the surface of the
pavement to be laid, and will be pro-
tected from the action OF the sun ard |
wind until set.
5e.-The cement for the concrete must
be of standard grade of Portland or Hy-
draulic cement, newly manufactured |
The cement while in storage or upon
the work. or while being hauled to the
work, shall be properly protected and |
no cement shall be used which in the
oninion of the city engineer has been
damaged by age or exposure.
Cement used must stand following
tests:
Fineness-Sieve No. 100 Of 10000
meshes per square inch of No 40 Stubs
wire gauge: Portland O. per cent fine;
Hydraulic 30 per cent fine
. Specific gravity-Sample we'll dried:
Portland $40 to 3.25: Hydraulic AGO.
Sound1ess-Pats of neat cement ;
inches in diameter one-half at center
with thin edges: Portland 3 hours boil