The Wheeling daily intelligencer. [volume] (Wheeling, W. Va.) 1865-1903, 1884-08-21

any such apparatus for btednttng."
In compliance with the provisions tf
4le statutes the Board met at Par
sersburs August II, 1881. and 11od August
IL for the examination Of applicants for sp.
polntment. The following written questions
we're submitted to each OF the candidates and
Q written nuswer required. All Of tho ques
tioEs we're bssed upon the requirements Of
the Law re ulsurg the Steamboat Inspection
Service. We give the most Important ques.
tions US propounded, with ths correct au'
swers annexed. H0"". .I1"
/. Wha. y The square root Of 3o5672so?
hnawer-5733. slve1 5i6H
. What Is the cabs root Ct 3205O0 S2iGis;
Answer-Go OF. ...T@
5. What Ia tensile strength IN boiler.platti
Aoower-The quality OF resisting a strain
to tear 1t Gsunder. NJ. .yf
i. What 10 ductility IL boiier.piatt?
Observation-Disclosures ~ shown by the con
traction Of the arc OF the plate al point O
fraotase when torn asuoder. ROOD 4.
8. What would be the tensile streneth pei
square inch OF boi'er-plate .2GI, 08 II II 70
CURED strain Of Il. 900 lbs. to lear 1t Rsur
Ter? rgn nH#g rr F-fgw"
Answer-7o,G l3 lbs. a, 's :.
q, How many pounds Of tensile strair
wonld 1t require TO tear ssunder q striI
Of boiler plate ..Gs %. the tensile ,treuglh O.
which Is G5 600 lba PSF squa!e inch? +
Answsr-l5,54S lbs. Hf
I. What percentage Of ductility woult
there be contained In ptscs OF boiler p,stt
reduced from .2Gx, 81 original dimensions, Il
.ls1 IS OF point ntt.ao.ure?
.Answer-.S033 plus.
s. What amount OF stesm pressure wou!t
be allowable on boiles 40 inchea in diameter
| msda Of plate &c thick Gevi0g. 8 teuslle
strength Of 60 900 lbs, aingls riyetcG2
Auswor--1S0 lbs. g
0.rWhas amount OF steam pressure would
bo Gllowatls on boiler 80 inches in diameter
iaade OF plate .25j shick having tensile
strength Of C5.LC0, ho!ea drilled, lousi.u
dinsl seams double riyssst?
Auswer--lH 60 lbs. ...-,-
10. What would DO the tensile strain In 8
circum!erential direction per square inch on
= boiler 80 inchea in diameter, having an in
tsfuai pressure OF 100 ibB. per tqua:e inch?
AusTer-2 $50 lbs. sal
II. Wba. would be Che bursting pressure
OF bo'lAc 40 Inches IN diameter, made oil
ploles 20 thick having tsnsils strength oil
GDCe0 ltH. rartqusre iach, single rivsted?
Auewer-520 lbs.
lo. What constitutes horse. power? ~.
Arswer-A mechanical force that will raise
50 900 lbs. one foot high per minute, or q me.
cnanical force that will raise one pound So.
COO feet high per minute. :
-l3. What 10 the nominal ho-ge- power Of an
ordinary marine boiler, such Is used on our
river, the diameter OF which IL 40 inches,
length % feet, containing two fues Is inches
In diameter
AlsTer-25. IS.
II. What is steam?i
ArsTer-An aqueous rapor that rises from
Mstsr AZ any degree OF temperature.
Is. How many cubic feet OF Steem can be
generated from cubic foot Of nater?
Answer, 72S. e
10. At what temperature Fab. does water
bon2
Ansvs,-2l2o. ~
II. At what temperature Fab. does water
fnizs?
Answer-S20. m
49, Whist 10 the pressure Of tho s!ncspheys
ct the lsvsl OF tho sea?
AnsUer-l4.70 lts.
! 10. What would bs the hydroa.atic prer-
sure for boiler IS inches in diameter, &c
thickhess CT plate, tensile strength 60. 900 lbs.
psr tqnare inch. loncitudinal seam doubts
ri7e.ed, holes drilled? a
Answer--2l9 20 lbl. 3.isz,,.. b & T.
20. Whist must be the thickness Of boiler.
plR!s Tor a single riyeted boiler 40 inches In
dlanstsr, tensile strength of plate u. coo lbs
peg tqnsFe inch, requiring pressure o.
100 lbs i? ~. i,.-.s' :, y
A1swer-.257l. 3@fo
q. What amount OF steam preesure would
tc allowable on 8 lap-seldsd aue 10 inches IL
diametsr, 30 feet in length, ha7iug u thick.
Iess Of material OF 81? n7e
ArsEer-l3i S lbs.s lssE 1sl-
12. What Thickness Of yuatcria! would be
required In lcp-welded 4 ne Is inches In
diameter and IS feet In lcuglh, requiring g
pressure u 1886 lbs. per square inch
Answer 1898 plus. 'E;s. 81 l&ilr q ~:
%. Whist must be the minimum inside
diameter OF tho leg cf steam drum OF a
botls. 40 inches inches in diameter and &c
fest in lsng:h, having two aues II inches in
diSnstey? - 49, Il 'l4'si5{s..1l' :
Answcr-14.2 % plus inches. z l&l''4 q
"A. What must bs the diameter Of the
setesy.valvs Of boiler having crate au,fsce
OF 4l5 fs6t? = -
b Aaswcr.-StG plus inches. t,E
20. What pressure per rausra inch would
1t require To ratss safety.yGtys 4 inches In
diameter, having a lever 4S inches In length
with inches OF tulorum tia lever having a
200 lbs. weight attached 10 the enc? ~
An3wss-l92.9Sp lus lbs. ales
" What pressure Fer sduare inch you,d
it require to raise Il safs'y.yalve 8 inches In
diameter bSving lever SO inches in length
with !ncheB OF iulcsuu,, the lever having a
cylindrical csst-iton weight 5 inches In al:
stDeter and icches ID length attached to the
end OF the lave? lns. 49, :
Ansser-155.72 plus pounds. ~
~. What 10 tho weight Of a cubic loot Of
fresh wGte!? g,.Ns. /. ~ = -
Auswer-G2.5 lbs.
2S.-Whst ie tho buoyancy Of a liis.rsfs
having two cylinders each with diameter OF
80 inches and l2 feet In length, not oonsid.
ering the weight Of the ruff? 49, -.
AEewez-755663. l25 pics pounds. 5tSs .1t5
20. What Bmouat OF lift must bo pive,, a
S1 inch tist.seated aaiely valve TO riodilcs
Ga area OF opening equal to tho insids diam
et1r OF the valys? IN IGl
Aasae7-.S75 inches. a
80. What amonnt OF lit must DO given
8 safsty-valVe 3T inches In dlsueter NAV.
ms q Aest with IN angle OF inclination Of
45' TO tho cehtcr line of its axis and aIgnth
OF .0S to produce m area OF opening equal to
that Of The yslvt? sIjs-' =. :, :
Auswer-.S05 inches. ~ hEN.
u. What siZ3 fqaase and circular OF oman.
Ing would 30 equAl to .05 LIT Off Inch fat.
seated yaivl? ~ : a = 80
Aneaer,-squsre 1920 plus inches; elrcu-
lar .S944plus iAches. II. 80.
Sc. What s'z, square aud cIrcul,r opening
would be equal 10 .12 lit. OF a valve 4inohes
In diame,ef having seat with an anple nj
inclination OF 45s 10 tho centor line Of In
axle, with depth Of ssst OF .OS? ..'-5' I
!, a Aanswsf-sqoare, ii2i-!uches; circular,
! ~ plus inches. ts t5st.a5sl at'%g ~"
Iha Board, after careful examination OF
NE answers handed in BY the various cand..
dates, found Reuben NJ. Thomas ths only
me qualified, he having correctly auuwerrd
% percent OF the questions propounded. His
highest competitor having Unanswered but s7X
psrcent. Whsreupon tho Board upsnimona.
y designated Mr.. Reuben N. Thomas for sp.
,oiiitmeht 20 me Cities q Local Inspector OF
=
THg Mountain Lake PARK Hotel hiss besn |