A column section b- 400 mn, h- 600 mm is reinforced with longitudinal bars Ast - 12-020 mm equally distributed along all faces. Lateral ties are composed of 12 na rectangular hoops with clear cover equal to 40 mm and 12 mm cross ties in both directions. Concrete yield strength f'c- 27 MPa and steel yield strength, fy - 415 MPa. Calculate the nominal axial strength of the column in kN.
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- Situation #2 A concrete co lumn has a diameter 4 300 mm. The column has 6 6teel rinforcing bars. Each renforcing bar has a crocs-sectiomal area 4 J0o mm2. The column is I150m lorg and has a load 17 1,370 kn applied to a igid steel plati af the top y the column. The plati distributes the load evenly over the 4 the co lumn.) tumn) top E,- 300 GPa ard Ec=arGPa Find the sfress in the &feel ard in the concrete ard the defomation urder the load.A W1422 acts compositely with a 4-inch-thick floor slab whose effective width b is 90 inches. The beams are spaced at 7 feet 6 inches, and the span length is 30 feet. The superimposed loads are as follows: construction load = 20 psf, partition load = 10 psf, weight of ceiling and light fixtures = 5 psf, and live load = 60 psf, A992 steel is used, and fc=4 ksi. Determine whether the flexural strength is adequate. a. Use LRFD. b. Use ASD.Design Slab DEGH of the floor system shown below. Dead load pressure including the slab's weight is estimated at 5.3 kPa while live load pressure is 2.4 kPa. Use fc' = 21 MPa and fy = 345 MPa. The supporting beam is 350 mm x 500 mm. Use 12mm diameter bars. 6m A B 6m C 2.6 m D 2.6 m 2.6 m J E H K LL F I L
- Nd Calculate the ultimate moment strength(Mr) for the column given below Mr- 2_ kNm tck(MPa) Concrete Characteristic Compresuve Strength tyk(MPa) Reinforcement Steel Characteristic Yieid Strength As2 ymc Concrete Mean Safety Factor yms Reintorong Steel Mean Safety Factor h bw(mm) Width h(mm) Herght d'(mm) Cover Concrete Thickness As1 As1 Steel At Bottom Part of the Cross section As2 Steel At Upper Part of the Cross section bw Design Axral Load Nd fck(MPa) fyk(MPa) ymc bw(mm) h(mm) d'(mm) As1 As2 Nd yms 1.15 30 420 15 275 550 25 3014 3014 350Details of a rectangular column are as follows: Column width along X-axis-250 mm Column Depth along the Y-axis-600 mm 8-25 mm diameter bars distributed equally along the longer sides. 10 mm diameter ties spaced at 10 mm on centers Concrete 28th day Compressive strength, fc;=20.7 MPa Reinforcing Steel yield strength, fy-415 MPa Assume that compression steel yields. a) Which of the following gives the nominal balanced load Pb (kN). A = 90.4 mm b) Which of the following gives the nominal axial load (kN) that the column n carry at an eccentricity of 200 mm along the X axis from the centroidal Y-axis.The material of the beam ziven below is C35:45-B500C and it is good quality coocrete. Tbe concrete cover xaven a 50mm. The dimcnonQ₁:Design a concrete column shown in figure using fe-28 MPa, fy- 420 MPa, ultimate applied load. P=545 KN B E 1500 P=350 KN b Section (a-a)ス F. reinforced concete structure is shown The floor framing plan oF in the figure. The beams are 280 mm wide and S20 mm deep, and the slob is 110mm thick an edditional (super impes) veight,1 and live lo ad of OTher than conerete weight, the floor subjected other to Is dead load of 3k Pa si2 k Por. Unit weight of concrete is 23.5 kN/m® le Determine the total uniform load on beam DEF and ABC axial load 20 Determme the total on columns A and B,D an) E 2Sm 티 2.Sm 6.2m 6.2mPls. AnswerGiven: f'c = 35 MPa fy= 415 MPaSolve for Slab S-1 (only)Exercises 1- A rectangular beam reinforced with 4 o18 bars has h=650mm, bw=250mm and d'=30mm. Applied moment is 67 kN.mMaterials used are C25 and S220. Allowable compressive stress and modulus of rupture for concrete are 10MPA and 2.3 N/mm2 respectively. Allowable stress for steel is 140 MPa. Is this beam cracked or uncracked? Is this beam designed adequately to carry the applied moment safely? 2- Does this beam have enough capacity to carry the applied moment? Also, calculate the position of neutral axis. h=50cm, bw= 25 cm, and d'=3cm. C25 and S420 are used. (kı= 0.85; fod= 17 MPa; fya=365 MPa; E= 2X10°N/mm?) DL= 30 kN/m LL= 15 kN/m 4Ф 22 5.3 m 3- Calculate the moment carrying capacity of the beam shown? Choose the required steel reinforcement to carry this moment. d=470mm b= 270mm and d'=30mm. C20: Allowable stress=7MPA S420: Allowable stress=220 MPa A, n=15The material of the bcam given below is C35-45- B50OC and it is good quality concrete. The cobcreie cover is gIYCD as 50 mm. Thc dimensions of the bcam are gven as be820 mm. bw:350mm.t130 m, b 700 mm. Tbe sbear force (Vd)is S50 EN and stirrup calcelations will be done in the span region othe beam. Ir 338 stirupis used to mcet the shear force, what is the maximum stimup spacing (cm) in span region? (s=2) 11 15 D13 017 Boş bırak Sonraki> Kapat1. A steel column 10 m long is fabricated from a cover plate and C section arranged as shown. Determine the safe compressive load. Fy = 248 MPa, E= 200 GPa. Use AISC/NSCP Specs. 450 mm -cover plate 'I 12 mm y2 IP d2 10 m C 310 x 37 A = 4720 mm? d = 305 mm bf = 77 mm tf = 12.7 mm tw = 9.8 mm C 310 X 37 a) Both ends of column are fixed b) Both ends of column are hinged c) One end fixed, the other end hinged Use design values of k. tw d=305- Ix = 59.9x10° mm ly = 1.85x10° mm x = 17.1 mm x=17.1SEE MORE QUESTIONS