Steel Design Sheet 13
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1) Question.
Battening is preferable when the
i) column carries axial load only
ii) space between the two main components is not very large
iii) column is eccentrically loaded
Answer. -
2) Question.
If the pitch is 6 cm and rivet value is 4 tonnes, the number of rivets required for a riveted connection carrying an eccentric load of 15 tonnes at a distance of 30 cm from the centre line, is
Answer.(6M/lpR)^1/2.
(6x30x15/2x6x4)^1/2.
7.5 answer.
8 rivets. -
3) Question.
Consider the following statements regarding the design of laced columns:
1. The lacing system shall be uniform throughout.
2. Laced compression members shall be provided with end tie plates.
3. If the column is subjected to bending also, transverse shear is taken equal to
bending shear plus
2.5% of column load.
The true statements are:Answer. -
4) Question.
The tensile strength of an angle section ISA 150 × 115 × 8 mm of Fe410 grade of steel
connected with the gusset plate for gross section yielding is ____________ kN.
Consider gross area of ISA 150 × 115 × 8 mm as 2058 mm2.Answer. -
5) Question.
The design shear capacity of ISMC 100 beam made up of Fe410 Steel, if the thickness
of web is 6 mm, is _______________ kN. [Use limit state method of design]Answer.6) Question.The minimum thickness of lacing flat required for single lacing system is
____________% more than the minimum thickness required for lacing flat in double
lacing system under indentical conditions.Answer.For single lacing t(min)= l/40
For double lacing t(min)= l/60
so, ( l/40-l/60)/(l/60)x 100= 50 %
7) Question.what is the maximum force in bolts?
Answer.8) Question.A fillet welded joint of 8 mm size is shown in the figure. The permissible stress in the
weld is 108 MPa. The safe load that can be transmitted by the joint is ____________ kN.Answer.Total weld length=250x2+80=580 mm
Strength of weld=0.7x8x108=604.80 N/mm
Maximum load= 604.80x 580= 350.78 KN
9) Question.A 6 mm thick mild steel plate is connected to an 8 mm thick plate by 16 mm diameter shop rivets. What is the number of rivets required to carry an 80 KN load?
Answer.10) Question.A steel plate is 30 cm wide and 10 mm thk. A rivet of nominal diameter 18 mm is driven, the net sectional area in sq cm
Answer.