RoJlNo...........................

TotalNo. of Questions:09] [TotalNo. of Pages:02

B.Tech.(Sem.- 4th)STRUCTURAL ANALYSIS - I

SUBJECTCODE :CE-208PaperID : [A0609]

INote:Pleasefill subjectcodeandpaperID onOMR)

Time: 03Hours

Instruction to Candidates: -

1) Section- A is Compulsory.. "2) AttemptanyFour questionsfromSection- B."3) AttemptanyT~o questionsfromSection- C.

MaximumMarks: 60

.. ".Section-.A

Ql) . . (10x 2 =20)

i)

j)

-

a) Statetpemomentareatheorem.

b) Howtofindthedeflectionbystrainenergymethodforacantileverwithconcentratedloadatthefreeend.

c) Forapressureof liquid"Pin theircylinder,findthestressesactingoni~.d) Deriveexpressionforstrainintheircylinder.

e) Whatis thebasicdifferencebetweenmethodof joints andmethodof .sections.

f) Whatarethefailurescriteriaofdams.Whatisthenotensioncriteriafora damsection.

g) Drawinfluencelineforshearforceforapointin cantileveroroverhang.

h) DrawinfluencelineforshearforceandB.M for singleloadW movingonthespan.

Differentiatebetweentwohingedandfixedarches.

Findthehorizontalreactionforuniformlyloadedcable.

Section'-B

(4 x 5=20)

Q2) Findthedet1ectionof acantileverbeamwithpointloadattheend.

Q3) Deriveexpressionforchangein volumeof athincylindricalshellduetoaninternalpressure. "

M-83 /1859}. " P.T.O.

Q4) FindtheforcesinthemembersAB, AC andBC ofa trusshavingaspan01'5metersbymethodof sections.It is carryinga loadof 10tonnes.

\ob

S"~

~

~du

'~i~

V,

Q5) A concretedamof trapezoidalse.ctionhavingwateronverticalfaceis 16mhigh.Thebaseof thedamis 8mwideandtop3mwide.Find

(a) Theresultantthrustonthebasepermlengthof thedam.

(b) Thepointwheretheresultantthrustcutsthebase.TakeWt of concreteas25kN/m3andwaterlevel~oincidingwiththetopof thedam.

Q6) Find themagnitudeof Bendingmomentsfor udl shorterthanthespanformovingloads. ...

Section- C(2 x 10=20)

Q7) Determipetheinfluencelinefordeflectionatfreeendaswellasatadistance'a' fromthefreeendof acantilever.

Q8) (a) DeriveanexpressionforradialshearF andnormalthrustN forathreehingedarch.. .

(b) A symmetricalparabolicarchwithacentralhinge,ofriserandspanL issupportedat'itsendsonpinsatthesamelevel.Whatis thevalueofhorizontalthrustwhenaloadWwhichisuniformlydistributedhorizontallycoversthewholespan.AlsofindtheB.M atanypointinthearchrib.

Q9) (a) A cableisswungbetweentwopointsatthesamelevelwithacentraldipof 12moveraspanof 120m.Thecablecarriesaudlofintensity2~N/mofhorizontaUength.Calculatethechangeinthehorizontaltensionif thetemperaturerisesby20~Ffromtheoriginaltakea =6x 10-6per1F.

(b) Deriveanexpressionfortemperaturestressesinsuspensioncable.

[KJ[8][KJ[KJ

~

M-83 2