Which of the following is also known as the working load?
9. Which of the following is also known as the working load? Explanation: A column and Strut can never be subjected to critical load and the column is subjected to less than a critical load. This load is phenomenally known as safe load or working load.
What is the effective length of a column at both ends fixed?
Both end fixed: The effective length when both the ends are fixed is equal to . The effective length factor is equal to 0.5. When one end is fixed and another end is pinned for a column, the effective length is equal to .
What is the effective length of a column at both ends fixed Mcq?
Strength of Materials Questions and Answers – Design of Columns
| End Positions Of a Column | Value of effective length |
|---|---|
| Effectively held in position and fixed against rotation in both ends | 0.65 × l |
| Effectively held in position at both ends but not restrained against rotation | 1.00 × l |
What is the maximum value of eccentricity provided in columns?
For a short column, when the unsupported length l = lex (for the purpose of illustration), we can assume l = 12 D (or 12b when b is considered). Thus, we can write the minimum eccentricity = 12D/500 + D/30 = 0.057D, which has been taken as 0.05D or 0.05b as the maximum amount of eccentricity of a short column.
What do you mean by effective length of column?
The effective column length can be defined as the length of an equivalent pin-ended column having the same load-carrying capacity as the member under consideration. The smaller the effective length of a particular column,the smaller its danger of lateral buckling and the greater its load carrying capacity.
What is actual column length?
The equivalent or effective length is defined as the distance between two adjacent points of contra flexure on the column. The equivalent length of a column is usually given in terms of the actual length and depends upon the end conditions of the column.
What is the minimum allowed value for eccentricity?
0.005
What is the minimum eccentricity?
Eccentricity of a column relates to how far the Vertical Load that is applied to the column ,is remote from the centre ( neutral axis) of the Column. Thus, we can write the minimum eccentricity = 12D/500 + D/30 = 0.057D, which has been taken as 0.05D or 0.05b as the maximum amount of eccentricity of a short column.
What is the maximum and minimum percentage of longitudinal steel in a column?
Answer. The maximum percentage of steel used in a beam is 2%, the minimum is 1%. The maximum percentage of steel used in a slab is 1%, the minimum is 0.7%.
What is the minimum and maximum of reinforcement in columns?
Maximum Reinforcement Ratio in Columns The maximum reinforcement ratio for columns is 0.08 times the gross area of the column. It brings economy to the design of columns and prevent steel congestion, which otherwise hinders proper concrete placement.
What is the minimum area of steel for a RCC slab?
Minimum distribution reinforcement steel (for TOR Steel) shall be 0.12% of the overall sectional area. i,e., 0.12 x 100cm x D cm=0.12D Sq.cm for 1 m width of slab where D is the overall depth of slab.
How many kg of steel is required in 1m3 of concrete?
Minimum quantity of steel required for 1m3 concrete slab is 1%, now 1% of 1m3 = 0.01 m3, and we know that 1m3 steel weight is 7850 Kg, so weight of 0.01m3 steel = 0.01 × 7850 = 78.50 kg, so minimum quantity of steel required for 1m3 concrete slab is 78.50 Kg.
What is the minimum reinforcement in slab?
0.12%
How do I calculate how much rebar I need?
For example, if your footings are 140 total feet long and your footings are 24 inches wide, then multiply 140 feet times three. You will get 420 feet. This is how much vertical rebar you will need for your 24-inch footers. Because rebar comes in 20-foot pieces, divide 420 by 20 and you get 21 sticks of rebar.