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Calculate ultimate moment and shear of effective span is 30m, live load is 9kn/m, dead load excluding self weight is 2kn/m, load factors for dead load is 1.4 for live load is 1.6 cube strength of concrete fcu is 50n/mm2 cube strength at transfer is fci is 35n/mm2, tensile strength of concrete Ec is 34kn/mm2 loss ratio ɳ is 0.85 and 8mm diameter high tensile strength fpu is 1500n/mm2 are available for use and the modulus of elasticity of high tensile wires is 200kn/mm2?
The influence of shape of aggregate in strength and workability of concrete are given below in statements S1, S2, S3 and S4. Which of the statements are correct? S1: Rounded aggregate produces concrete with high workability and low strength. S2: Angular aggregate produces concrete with high workability and low strength. S3: Rounded aggregate produces concrete with low workability and high strength. S4: Angular aggregate produces concrete with low workability and high strength.
Which of the following statements describe(s) limitation(s) of concrete technology? A. Availability of concrete ingredients easily. B. Due to low tensile strength, concrete is required to be reinforced to avoid cracks. C. Monolithic character gives better appearance D. The property of concrete possesses high compressive strength.
Consider the following statements related to the merits of construction in structural steel: 1. Structural steel has high strength per unit weight as compared to RCC. 2. The steel members are slender or small in size as compared to RCC. 3. The steel structures are useful in the construction of tall buildings, long-span bridges, and airplane hangers. Which of the above statements are correct?
In a limit state design of a RC beam the design strength of concrete to be taken as per IS code recommendation is: Where fck: concrete characteristic strength
Compared to mild steel, cast iron has (i) High compressive strength (ii) High tensile strength (iii) Low compressive strength (iv) Low tensile strength
Compared to mild steel, cast iron has
(i) High compressive strength
(ii) High tensile strength
(iii) Low compressive strength
(iv) Low tensile strength
Permeability in concrete is studied towards providing for, or guarding against, which of the following features? 1. The penetration by materials in solution may adversely affect the durability of concrete; moreover, aggressive liquids 'attack' the concrete. 2. In the case of reinforced concrete, ingress of moisture and air will result in corrosion of steel leading to an increase in the volume of steel, resulting in cracking and swilling of the concrete cover. 3. The moisture penetration depends on permeability and if the concrete can become saturated with water it is less vulnerable to frost action.
Consider the following statements: 1. If more water is added to concrete for increasing its workability, it results into concrete of low strength. 2. No slump is an indication of a good workable concrete. 3. Higher the slump of concrete, lower will be its workability. 4. Workability of concrete is affected by water content as well as water-cement ratio. Which of the above statements are correct?
In a survey of 25 students, it was found that 15 had taken Mathematics, 12 had taken Physics and 11 had taken Chemistry, 5 had taken Mathematics and Chemistry, 9 had taken Mathematics and Physics, 4 had taken Physics and Chemistry and 3 had taken all the three subjects. Find the number of students who had taken both Physics and Chemistry but not Mathematics.