The weekly Columbian. [volume] (Columbia, Tuolumne Co., Cal.) 1856-1???, 1856-10-11

The following Is report OF the Engineer OF
The above Company
KS-aHr's FERRY. Sept. 10th 1856.
Board Of Trustees Of Knights Ferry Ia
BILE Moaassia Water Co"
GEt7Le,lps .-Havine completed the expert
mental survey. and nearly the location of the
line Of your ditch upon he South side Of the
stanIslaus River, beg leave to report:
That lis entire length from tie dam of the
san Joaquin Go. Water Company. to point
imnediGiely 10 rear Of BUena Vista Flat is six
miles one hundred and ninsty reds OF this,
there VIII he 3 miles and lSJ rods of posture flu
ming miles $50 rods of positive ditching-
$50 srods do45t6R. BY this last term is i'm
piled that portion. which until further exami-
nation and some trial is made it would be diff
fcult 10 determine with certainty, whether it
were cheaper and better to hume or 10 ditch.
AS an example Of this would refer to some
2UeO feet of the line Eear THO mile Bar, be
low the Stockton & Sonora road. Here we find
mass of loose broken stone over which, it
now seems to me. Jeuning will be necessary. but
which investigation might show could be more
probably ditched This portion termed doubt
fnlH / have regarded in the estimates. half
flaming and half ditching. The grade adopted
F
! ming aud fraction over feet for dtching.
When the character of the ground was such as
to render it doubtful whether ditching or fiu-
ming would be ultimately employed, l have
given the fume grade
Of the positive fumng some 240 rods will be
much higher than the generality of that neces-
sary and. on that account. will differ very ma
terially therefrOm. in the cost of construction.
From ! to II miles of fluming, next below the
Dam, will be liable to overflow at high stages
of water and hence great care should be be-
slowed in making that portion of it, particu-
larly strong, and doubly more so than will be
requisite when not so exposed. ! would sug-
gest that here iron bolts and strOps be employ
ed, that the timbers for tresseling be of more
than ordinary size, and that the plank be, all
of 2 inches in thickness. For whilst the differ
ence in the amount of timber will be some 20,
900 feet and in the cost some $500. the addi-
tional security afforded. WILL I am satisfied.
amply compensate for the additional expense.
In the following estimates have adhered to
the dimensions spoken of in frequent conversa-
tons between ourselves: viz, Fluming feet
by feet inches-pitch feet bottom, 2 feet
depth 81 to one slope (This slope | have
adopted as a mean, as whilst much the larger
norton Of the soil, will not actually require a
yreater than rs to l, yet some of it, that on
+ . y How Bar for example, is of SO sandy a
nature as to make slope of l to l necessary. J
/ nave assumed the bottom plank to be inch
IS MEX the side plank Is inches, the Uprtghts
ana Braces 3 by inches, and the f1me suLs 4
I by 4 inch scantling. The stringgs, if hewn. l
would advise should be of 8 inch square timber.
bpt il sawR al may be found cheaper, would
bave them as well as the caps. of by inch
scaatNog. I nave regarded them in the es-
TINS and ealcglated Their cost by board zaens-
IRE
IL refer g the d;gging. am compelled to
be guiasd 81 great KENT in forming an es-
tnlats 81 Is cost hy tB prices paid upon the
Columbia and S;anislaus river Water Coz
| have 20 0ta ef rioa to judge by. Nor is
This p0og e9s NAel we consider that it is
y8m Nutrition % pursue the system adopted by
that gompsay 81 prosacuting its work. The
majority 81 sAe dsEtfg pom your line is what
.yoaIa &c termed dsaeNl upon the canal of the
C. as r. ~ Co 80 better evidence is re-
CURED Of the dialeulty to be encountered in
excayatng than is furnished by the large
amount of slate thai crops ont so very generally
I upon the line-stiI, there is quite number OF
rods of comparatively easy ditching to be met
with, especially upon the lower end of the
rOnte.
! In reviewing, We find The specifications and
estimated cost as follows, IN round numbers:
/ 42,2OO feet inch plank
! $4,000 81 ("
/ $4,000 8 by and by 4 inch scantling.
| $4,000 g 6by scantling.
| 1cO cnO r. of lumbar nor mile