Bissoy.com
Doctors Medicines MCQs Q&A

A steel column of ISHB 350 @72.4 kg/m is subjected to a factored axial compressive load of 2000 kN. The load is transferred to a concrete pedestal of grade M20 through square base plate. Consider the bearing strength of concrete as 0.45 fck, where fck is the characteristic strength of concrete. Using limit state method and neglecting the self-weight of base plate and steel column, the length of a side of the base plate to be provided is

A steel column of ISHB 350 @72.4 kg/m is subjected to a factored axial compressive load of 2000 kN. The load is transferred to a concrete pedestal of grade M20 through square base plate. Consider the bearing strength of concrete as 0.45 fck, where fck is the characteristic strength of concrete. Using limit state method and neglecting the self-weight of base plate and steel column, the length of a side of the base plate to be provided is Correct Answer 48 cm

Concept:

Bearing plates are provided below the column to transfer the load to the concrete pedestal.

Area required for the base plate = Factored load / Bearing Capacity of concrete

Bearing Capacity of concrete = 0.45 × fck

fck - Characteristic strength of concrete

Calculation:

Given:

Factored load = 2000 kN, Bearing Capacity of concrete = 0.45 × 20 = 9

∴ Area required = 2000000/9 = 222222.222 mm2

Side of plate = √222222.222 = 471.40 mm = 47.1 cm

∴ A plate of 48 cm is to be provided.

Related Questions

A shopkeeper has 100 kg of good grade rice and x kg of bad grade rice. He brought good and bad grade rice for Rs. 20 and Rs. 10 respectively. He can sell the good and bad grade rice at Rs. 30 and Rs. 13.5 respectively. Out of x kg, if he mixes y kg of bad grade rice with good grade, he will get a profit of 69 2/7% from total sale. If he mixes y/2 kg of bad grade rice with good grade, he will get a profit of 57.5%. What is the profit he would have got if he sold honestly? (in rupees)
Regarding the new MSP of Paddy declared by the Government in July 2018, which of the following statements are correct? 1. MSP of Paddy (Common Grade) has been increased by Rs. 200/- per quintal and of Grade A variety by Rs. 160/- per quintal. 2. MSP of Paddy (Common Grade) has been increased by Rs. 160/- per quintal and of Grade A variety by Rs. 200/- per quintal. 3. The new MSP of Paddy (Common Grade) and Grade A variety is Rs. 1750/- per quintal. 4. The new MSP of Paddy (Common Grade) is Rs. 1750/- per quintal and of Grade A is Rs. 1770/- per quintal.
There are five friends F, G, K, O, and P, who got different grades A, B, C, D, E in an examination, where A grade means lowest and E means highest grades. F neither got highest nor lowest grade. Number of peoples having higher grade than K and number of peoples having lower grade than K are equal. O gets the lowest grade among them. G does not get highest grade but his grade is better than K. Who got grade B?
Consider the following statements for Euler’s equation to find the critical load of a column : 1. Critical load of a column is proportional to the flexural rigidity. 2. Critical load of a column depends upon yield stress. 3. Critical load of a column is inversely proportional to the length of the column. 4. Critical load of a column is inversely proportional to the square of the length of the column. Which of the above statements are correct?
What will be contained in Msg if grade entered by user is 'd'?
grade=grade.Text.ToUpperIf grade=="A" Msg ="Excellent"ElseIf grade=="B" Msg="Very Good"ElseIf grade=="C" Msg="Good"ElseIf grade=="D" Msg="Fair"Else Msg="Fail"EndIf
Given below are three quantities named 1, 2 and 3. Based on the given information, you have to determine the relationship between the three quantities. You should use the given data and knowledge of Mathematics to choose between the possible answer. Quantity 1: Area of the innermost square. A square is made by joining the midpoints of a square of area 200 sq. m. The outermost square is called Square 1, The square inside it is called Square 2. The next square is made by joining midpoints of square 2 and is called Square 3. This process goes on. Square 5 is the innermost square. Quantity 2: A man starts with a speed of 10 km/hr. He increases his speed by 10 km/hr every hour at the start and drives at the same speed for that hour. If he traveled a total distance of 550 km. Find the time Quantity 3: Height of cylinder Its volume is equal to the volume of a cone whose radius is 14 cm and height is 39.3 cm. The radius of the cylinder is 14 cm
বন্ধুর ঘনত্বের ক্ষেত্রে: i. বায়ুর ঘনত্ব 1.29 kgm-3ii. হাইড্রোজেন গ্যাসের ঘনত্ব বায়ুর ঘনত্বের চেয়ে কমiii. সঞ্চয়ী কোষে ব্যবহৃত সালফিউরিক এসিডের ঘনত্ব 1.5 × 103 kgm-3 থেকে 1.3 × 103 kgm-3 নিচের কোনটি সঠিক?
When an open coiled helical compression spring is subjected to an axial compressive load, the maximum shear stress induced in the wire is (where D = Mean diameter of the spring coil, d = Diameter of the spring wire, K = Wahl's stress factor and W = Axial compressive load on the spring)
In a gusseted base, when the end of the column is machined for complete bearing on the base plate, then the axial load is assumed to be transferred to base plate
Of the 360 students who sat for Class X Board exams, 10% students scored A grade, 20% students scored B grade, 30% students scored C grade and 40% scored D grade. From the given pie chart, find the total number of students who scored Grade A and Grade B.