Civil Engineering MCQs

Page No. 299

In which of the following directions, the strength of timber is maximum ?


aparallel to grains

✓


b45° to grains

✖


cperpendicular to grains

✖


dsame in all directions

✖


View Answer parallel to grains

The disease of dry rot in timber is caused by_____________?


alack of ventilation

✓


balternate wet and dry conditions

✖


c complete submergence in water

✖


dnone of the above

✖


View Answer lack of ventilation

The radial splits which are wider on the outside of the log and narrower towards the pith are known as________________?


aheart shakes

✖


bcupshakes

✖


cstarshakes

✓


drindgalls

✖


View Answer starshakes

Which of the following trees yields hard wood ?


adeodar

✖


bchir

✖


cshishum

✓


dpine

✖


View Answer shishum

In which of the following pairs both trees yield soft wood ?


adeodar and shishum

✖


bchir and sal

✖


csal and teak

✖


d chir and deodar

✓


View Answer chir and deodar

Sapwood consists of______________?


ainnermost annular rings around the pith

✖


bportion of timber between heartwood and cambium layer

✓


cthin layers below the bark

✖


dthin fibre which extends from the pith outwards and holds the annular rings together

✖



Which of the following timbers is suitable for making sports goods ?


amulberry

✓


bmahogany

✖


csal

✖


ddeodar

✖


View Answer mulberry

Spalling hammer is used for_____________?


adriving wooden headed chisels

✖


brough dressing of stones

✓


ccarving of stones

✖


dbreaking small projection of stones

✖



Crushing strength of a good building stone should be more than____________?


a50 MPa

✖


b100 MPa

✓


c150 MPa

✖


d200 MPa

✖


View Answer 100 MPa

Cross cut saw is used for_______________?


acutting soft stones

✖


bcutting hard stones

✓


ccutting large blocks of stones

✖


ddressing stones

✖


View Answer cutting hard stones

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