Given the properties of the section below: width = 1000 mm thickness = 392 mm concrete cover to bar centroid = 90 mm bar diameter 16 mm bar spacing = 113 mm Use fc' = 36.8 MPa, fy = 345 MPa. Calculate the steel strain (ɛ,) in x10 3
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- determine the tensile stress in each segment of the bar shown. Segment AB cross section 2in x 2in. Segment BC has a circular cross-section with a diameter of 1.75 in . The tensile load P= 75 kipsThe steel bar has the original dimensions shown in the figure. If it is subjected to an axial load of 50 kN, determine the change in its strength in mm at section a-a. Est = 200 GPa, vst = 0.29Q#5: The cross section of a wood beam carries a bending moment M of magnitude 20R lb.-in. acting at 10⁰ to the horizontal. Determine(a)the angle between the neutral axis and the horizontal; and (b) the maximum bending stress acting on the cross section. Note : Use R=980 For Details See Picture Attached
- A rectangular steel block 250 mmx100 mmx80mm is subjected to axial loads as follows. 480 kN (tensile in direction of its length) 900 kN (tensile on 250mm x 80 mm faces) 1000kN (comp. on 250mm x100mm faces) taking E=200 GN/m2 and 1/m=0.25 find a). Change in dimensions (height, width and length) b). Change in volume of the block c). Volumetric Strain c). Values of N and K (Module of Rigidity and Bulk Modulus) for material of the block. d). Determine the volume difference if the temperature of block increased by 20K. (Take alpha steel = 11.7 x 10-6 / 0C ) e). Discuss the behavioral characteristic for given application Comparing the impact from given mechanical loadings and thermal loadings to the block.For the wooden beam sketched in the figure, ask for the mid-span section. a) Determine the normal stresses at points 1, 2, 3 and 4. (Represent the distribution of normal stresses in the section) b) Check the structural safety in relation to normal stresses. (Adopting γt = 3.2 and γc = 2.5) ADDITIONAL DATA / INFORMATION Characteristic strengths of wood: TENSION: σr,t = 52 MPa COMPRESSION: σr,c = 40 MPa1. The bar ABCD consists of 3 cylindrical steel segments with different lengths and cross-sectional areas. Axial loads are applied as shown. Calculate the normal stress in each segment in psi unit. Indicate if T or C.Calculate the total axial deformation in Problem #1 if Es = 29 x 10 6 psi . Indicate if the bar elongates or contracts.
- UPVOTE will be given! Please write the solutions completely and legiby. Box the final answer. Answer in 3 decimal places! Strength of Materials The hook is used to lift the force of P as shown. The section dimensions of a-a is given: P = 40 kN a = 25 mm b = 30 mm c = 70 mm c. Calculate the maximum tensile stress in section a-a in MPa. d. Calculate the maximum compressive stress in section a-a in MPa.The compound bar ABCD has a uniform cross-sectional area of 0.28 in2.Determine the change in length (in inches) of the bar if an axial force P = 3676 lbis applied.The moduli of elasticity are 29037 ksi for steel and 10006 ksifor aluminum. Round off the final answer to four decimal places.UPVOTE will be given! Please write the solutions completely and legiby. Box the final answer. Answer in 3 decimal places! Strength of Materials The steel wide-flange beam has the dimensions shown. If it is made of an elastic perfectly plastic material having a tensile and compressive yield stress of o,, determine the following: Given: Allowable Stress = 300 MPa a = 20 mm b = 250 mm c = 250 mm c. Calculate the plastic moment of the section in kN.m d.Calculate the shape factor of the section.
- !! Show Complete & Detailed Solution w/ FBD !!The concrete post in the figure, is reinforced axially with four symmetrically placed steel bars, each ofcross-sectional area 750 mm2. The moduli of elasticity are 200 GPa for steel and 14 GPa for concrete. A 2000-kN axial load is applied. Compute the:a. axial force in concrete;b. axial force in the steel bars;c. stress in the concrete;d. stress in the steel bars;e. deformation of the concrete post.In the figure, find the length c of the overhangs so that the beam made of U profile can carry the loading safely. The safety stress (σç)emn=50N / mm2, (σb)emn=80N /mm2 for the tensile and compression condition of the material. The support range of the beam is L=6 m, cross-section dimensions a=210 mm, b=150 mm and wall thickness t=40 mm. The loading condition is P=30kN and q0=40 kN/m.The bronze bar 3 m long with a cross-sectional area of 350 mm2 is placed between two rigid walls. At a temperature of –20°C, there is a gap of 2.2 mm, as shown below. Determine the temperature in °F at which the compressive stress in the bar will be 30 MPa. Use α =18(10)-6/°C and E = 80 GPa. Note: Draw the Free Body Diagram, include the units/dimensions, use the proper formula and round-off all the answers and final answers to 3 decimal places.