2. The following details are of a two-story building. 2.5" 13 5 Column A 4 No....
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Case 2: Design of Short Columns - Small Eccentricity Determine whether the spiral column of cross section shown in Figure 2.1 is adequate to carry a factored axial load Pu of 540 kips. Assume small eccentricity. Check the spiral. Use fc 4000 psi and fy -60,000 psi. 큠.φ @ 2 7-'8 bars 1cover Figure 2.1 Spiral Column
Case 2: Design of Short Columns - Small Eccentricity Determine whether the spiral column of cross section shown in Figure 2.1...
Problem 22. Two-story, one-bay unbraced frame shown below is subjected to gravitational dead and live loads and wind lateral load. The columns are made of W18x65 (I,-1070 in , Ag- 19.1 in2, r-7.49 in, ry-1.69 in) and beams are made of W18x71 (1, 1170 in). The table below shows the moments at the ends of column 4-5 due to three load cases. The frame is fully braced in lateral direction. Use Grade50 steel Bending is about strong axis. All gravity...
Problem 1: The column has 6 #9 bars with 3 bars on each side separated 14" center-to-center. fc = 4 ksi, fy = 60 ksi. With bending about the y axis: (a) What is the maximum factored axial force, (Pwmax, that it can carry if analysis has shown that the bending moment is negligibly small? (b) What is the maximum factored bending moment, My, that it can carry together with the load (Pmax determined in (a) above? max b= 14"...
A column in a 2-story building supports loads from the second floor and the roof. Loads were calculated and are provided below: Roof Dead = 18,000 pounds Roof Live = 14,400 pounds Wind (down) = 36,000 pounds Wind (up) = 60,000 pounds Floor Dead - 32,000 pounds Floor Live - 39,000 pounds. Using applicable ASD load combinations (refer to Ch. 2 of your textbook), determine the following: a. The maximum axial compression load in pounds for the column supporting the...
The plan view of a typical floor of a four-story heavy storage facility is shown below. The floor and roof live load is 250 psf, and the dead load on all foors and the roof consists of the structure self-weight plus 10 psf for utilities. W 12:96 beams are spaced at 12 ft; w 18x106 reinforced one-way concrete floor/roof slab is 8" thick, each story is 12' high, and the reinforced concrete columns have a 14" x 14" cross-section girders...
frame, whhere thhe steel. Take4 ksi ength factor, K is found to be 1.05. The RC comm is reinford Sestion A-Bending [Figures are not-to-scale (a) (4 pts] Determ ine the maximum P, the column can carry if it is loaded concentrically. Take b- 24 in. ine the maximum P and M, the column can carry if the outermost tensile layer of met is stretched toatensilestrain of000. Again,»-2Aǐn 0, determine the maximum M, the column can carry. Again, b-24 in. steel...
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Problem 3 : Interaction Diagrams -A short column is subje cted to a factored axial load of Pu-850 kips. The concrete has a compressive strength of 4 ksi and grade 60 steel is used. Use the interaction diagrams (where appropriate to answer the following): A. If the column is designed as a tied column, determine the...
The single-story unbraced frame shown below is subjected to dead load, roof live load, and wind load Figure 1 shows the results of a first-order analysis relative to the columns of the frame. The axial load and end moment (also equal to the maximum moment in the column) are given separately for the different load cases (i.e., dead load, roof live load, and lateral wind load). All vertical loads are symmetrically placed and contribute only to the Mnt moments (i.e.,...
Don’t do the extra credit. Just the regular problem.
The single-story unbraced frame shown below is subjected to dead load, roof live load, and wind load Figure I shows the results of a first-order analysis selative to the columns of the frame The axial load and end moment (also equal to the maximum moment in the column) are given separately for the diffierent load cases (i e, dead load, roof live load, and lateral wind load) All vertical loads are...
4. A two story office building has interior columns spaced 25 ft apart in two perpendicular directions. The columns are fixed at the roof, the second floor and the ground floor in both directions. Consider the dead load (4 inch-thick reinforced concrete slab at the roof and 6 inch thick reinforced concrete slab at the floor) as well as appropriate live load. Ignore other dead weight other than shown. Determine the following using A992 steel: (20 points) 1) Dead load...