The record-union., 1895-12-19

crushed they told him that in order to
comply with the specifications they had
! to crush some of the rock too fine. He
thought that the fine stuff on the sur
| face was a substantial compliance with
| the specifications.
B. Labs testified that the rock was the
same that he used and came from the
same place. He considered it fair mac
adam. He had to roll and roll Eleventh
street till the surface was broken into
| dust. If the property owners wanted
! macadam according to the Speclfica-
| tiCnS, they would have to pay $40 a
| yard for it. Mr.. Murray wanted him
| to roll Eleventh street and make it a
bicycle street, but he got tired and re-
fused to roll it any more. He put on the
top dressing of Seventeenth street just
| like that on Tenth
! ]. A. WoodSon stated that he had
made a study of road building and was
official correspondent of the United
States Road Commissioner. He had
read and lectured on the subject. lie
| Inspected the fine material used on
Tenth street. in company with Mr..
Maude, the State Road Commissioners.
There was much fine stuff in it. All
the authorities but one on bodybuilding
agree that the units of macadam
road must be so clean that they will not
color water, and anything that goes be-
| tween the units of road metal Will oper-
ate to keep them from binding. There is
no such thing in bodybuilding as ce-
ment, although he had heard witnesses
| talk about it tonight. The principle OF
a macadam road is to roll it till the nat
surfaces are pressed tight together and
| they will shed water. The best mac
adam road is in Alameda County, and
there is nothing on it less than half
| inch.
The only authority who differs from
! this theory states that he once found
red clay that formed cement for the
macadam. Traprock dust is sometimes
soluble and sometimes not. Granite
rock simply makes sand, and sand will
not cement macadam The Folsom
plant will crush rock as fine as one
| eighth of an inch, to be used as surface
material to bind the rock.
CITY Surveyor Mullenny explained
how the rock was crushed at the Cor
della quarry He said the rock was
screened and fell into the bunkers, ana
could not get to the earth. He thought
that the fine stuff in the samples was
stone dust The powders are blasted
out and taken to the crusher. They
may have a little dirt on them. lie
! thought it necessary to have stone DUST
! to make a surface for a macadam road.
He thought Tenth, Eleventh and Sew
enteenth streets We're all good. There
| is no arrangement at Cordella Tor
screening out the dust. In order to do
so they would need fine sieve
and more bunkers. In answer
to a question by Lawton he said that
the measurement of the stuff put on
Tenth street exceeds that called for by
| the specifications. The assessment
! levied on the property owners was for
the full amount put on by King. 1t
! 1 oh faar a1af1f
more.
| The estimates were looked up and it
was found that they were for $40 cubic
| yards and the measurement showed
that 2,215 yards was put on-an excess
of 400 yards, which, at So % yard, in
creased the cost to the property holders
! 81, ia over the estimate. Mr.. Mullenny
thought the specifications had been sub
stantially complied with.
The matter was then continued till
next Monday night.
DeYine wanted to know in relation to
the claim on the Government for the
| Improvement of Seventh street in front
Of the building.
After some discussion the Corporation
| Counsel was directed to prepare the
necessary papers to forward to Wash
| ington.
The fountain from the exposition
grounds near the depot was ordered
transferred to the city park at Fifteenth
and p streets.
The matter of the ordered compila-
ton of the ordinances was referred to
| the Finance Committee to ascertain
| the condition of the work.
A communication from Casper &
| Long was read, asking that in order to
protect them in pumping for the city
after the expiration of their contract,
the contract be extended till January
| LIST. The request was granted, and the
board adjourned.