oose either true (T) or false (F) for each question below a. Concrete consists of a combination of concrete and steel wherein the steel provides the tensile strength lacking in the concrete. ( ) Shrinkage is defined as the reduction in volume of concrete due to loss of moisture.() tion below

oose either true (T) or false (F) for each question below a. Concrete consists of a combination of concrete and steel wherein the steel provides the tensile strength lacking in the concrete. ( ) Shrinkage is defined as the reduction in volume of concrete due to loss of moisture.() tion below

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

Compressive strength developed with the age of hardening and decrease with the increase of water addition to the mix. Whilst, the last one is adversely related with the flexural strength of the concrete. * True False Other:
10/10 FIND STRESS IN STEEL MATERIALS IN COMPOSITE COLUMIN SHOWN BELOW. IF E st= 200 kN/MM2, Ealu.=70 kN/MM2 100 kN RALU=30 MM Aluminum Steel 1m R ST 20 MM
A composite bar is made of Steel & Aluminium strips each having 3 cm² area of cross-section. The composite bar is subjected to an axial load of 12000 N. If Esteel = 3EÃ¡, the stress in steel is
Situation 5: The compound bar, composed of the three segments shown, is initially stress free. Compute the stress in each material if the temperature drops 25°C. Assume that the walls do not yield and use the following data: A (mm²) a (/*C) E (GPa) Bronze segment 2000 19.0 x 10-6 83 Aluminum segrnent 1400 23.0 x 10-6 70 Steel segment 800 11.7 x 10- 200 - 500 mm→- 400 mm- 800 mm Aluminum Steel Bronze 17. Compute the stress in the bronze bar a. 31.6 MPa (T) b. 31.6 MPа (С) 18. Compute the stress in the aluminum bar. а. 45.1 MPа (Т) b. 45.1 MPa (C) 19. Compute the stress in the steel bar. 79.0MPA (T) 79.0MPA (C) 13.6 MPa (T) 13.6 MPa (C) c. d. 54.1 MPа (Т) 54.1 MPa (C) с. d. a. C. 97.0 MPa (T) b. d. 97.0 MPa (C)
A steel component is subjected to alternate cyclical loading. The steel follows Basquin's law for high cycle fatigue, o, x N = C, (where the stress amplitude is in MPa). Ignore the geometric detail and assume that Marin's modifying factors are all equal to 1. You are given the minimum stress ain = -213 MPa, the maximum stress omax = 213 MPa. The material data are Tensile strength oUTS = 539 MPa, Basquin's constant c, = 875 MPa, Basquin's exponent a = 0.085. a) Calculate the stress ratio R, the stress amplitude o, in MPa and the mean stress am in MPa. The answers are acceptable with a tolerance of 0.01 for R and of 1 MPa the stresses. R: MPa MPа b) Calculate the corresponding life, in 10° cycles, (tolerance of 0.1 106 cycles) N :
Water/cement ratio of concrete is the ratio of Volume of water to the volume of cement Volume of water to the weight cement Weight of water to the weight of cement Weight of water to the volume of cement (a) (b) (c) (d)
For the cross section shown below, the material and sectional properties are given as follows: Determine the modular ratio. The concrete modulus of elasticity can be estimated by [psi] where must be in unit psi. (b) Draw the transformed section. (C) Show that the cross-section is elastic and does not have cracks when a bending moment of 1,000 kips-in is applied. Also, given the bending moment, find the maximum stress in concrete and steel. The neutral axis is at 11.05 in. from the top surface, and the moment of inertia around the neutral axis is 26676 in4.
3 For a composite bar as shown below, what is the relation between axial deformation and thermal deformations in the bar? Cu tube (1) Steel bar (2) D d- Where, o,, o, = stresses in Cu and steel bar respectively. Coefficient of thermal expansion for Cu and steel bar respectively.
5. A bronze bar is fastened between a steel bar and an aluminum bar as shown in Figure 5. Axial loads are applied at the positions indicated. Find the largest value of P that will not exceed an overall deformation of 3.0 mm, or the following stresses: 140 MPa in the steel, 120 MPa in the bronze, and 80 MPa in the aluminum. Assume that the assembly is suitably braced to prevent buckling. Use Est = 200 GPa, Eal = 70 GPa, and Ebr = 83 GPa. Steel A = 480 mm² 1.0 m Bronze A = 650 mm² 3P 4P 2.0 m FIGURE 5 Aluminum A = 320 mm² 1.5 m 2P
Reinforced concretes are usually attacked by water and rusted. This is due to, a. Low density cements or high porosity that allow water to reach the steel b. The expansion of the rust as it has higher volume than steel push the cement cover and break it c. All the options d. None of the options e. The cover thickness is too small (the steel is too close to the end of the concrete block)
The composite bar is firmly attached to unyielding supports. The bar is stress-free at 50°F. Compute the stress in each material after the 80-kip force is applied and the temperature is increased to 100°F. Use a = 6.5 x106/°F for steel and a = 12.8 x106/°F for aluminum. Aluminum A = 2 in.² E = 10 x 106 psi 15 in. Steel A = 3 in.2 E = 29 × 106 psi 80 kips 10 in.
This course EHide blocks An aluminum pipe is filled in concrete is subjected to a pure compressive force as shown in the figure below. Determine the factor of safety against compressive stress acting on the column. The pipe has an outer diameter of 45 mm and inner diameter of 35 mm. The aluminum and the polymer concrete have the following material properties: Young's modulus: Eal = 70 GPa (aluminum), Ecr = 30 GPa (concrete). Yield compressive strength: Sy-al = 180 MPa (aluminum), Sy-cr 60 MPa (concrete). 100 kN 500 mm Select one: O FS = 1.5 O FS = 1.7 O ES- 19 5:45 PM 86°F Light rain ENG 6/18/2021