dozm over Q1/ Design a square footing carrys an interior column with dimension (400*400mm), the column carrys a dead load of (1020kN), and alive load of (710kN), the allowable soil pressure is (270Mpa), 1 = 25Mpa, f = 400Mpa , Ysoii=19 kN/m3. Using b = 25mm for steel reinforcement, and footing 75 mm, ------. :.. اله سامه ۸۹۰ اسل لولوم

dozm over Q1/ Design a square footing carrys an interior column with dimension (400*400mm), the column carrys a dead load of (1020kN), and alive load of (710kN), the allowable soil pressure is (270Mpa), 1 = 25Mpa, f = 400Mpa , Ysoii=19 kN/m3. Using b = 25mm for steel reinforcement, and footing 75 mm, ------. :.. اله سامه ۸۹۰ اسل لولوم

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

You are to desigh a square footing having properties as given: Dimensions: B-2m a=0.6m b=1m c-0.4m Column toads: My P (kN) (kN- m) Dead Load 230 48 Live Load 120 28 Earthquake 25 220 Load Determine the maximum net soil pressure in kPa..
A strap footing consists of two footings connected by strap beam. Allowable soil pressure is 450 kPa. Footing thickness is 600mm and the bottom of the footing is 1.5m below the ground. Assume soil weight to be 19 Kn/m3 and concrete weight to be 24 Kn/m³. Use f'c = 20.7 Mpa and fy = 414 Mpa. Use 1.2DL + 1.6LL. gog = galow - footing weight – soil weight. DL = 275 kN LL = 400 kN DL = 600 kN LL = 500 kN 4.8 m 400 x 400 column 400 x 400 column 1.2 m 1.2 m a) Calculate the footing dimensions. (Size is in multiples of 100 mm) b) Draw the Shear and Moment Diagram on the Longitudinal Direction. Show the maximum shear and moment.
2) Design an isolated footing to support a 100 x 40 cms column. The column loads are 150 tons D.L. and 100 tons L.L. Consider only reinforced concrete footing on foundation soil. • Foundation Soil: qall = 2.0 kg/cm², foundation level at depth 3.0m • Concrete: feu = 250 kg/cm² in footing, and 350 kg/cm² in column • Steel: 36/52 Column Reinforcement: 10 22 Provide complete 1:20 detailing drawings for the designed footing.
Q2/ Design the footing shown the figure below, using fc = 24 Mpa and fy = 415 Mpa N M M=800 KN-m DL= 800 KN LL=800 KN w=0.5 m 2.25 m 60 kPa Love (L-w) 2 2.25 m 3 m 239 kPa
Q-2) A (2 m) wide square footing is to be embedded at (1.5 m) below ground surface. Consider the groundwater table to be very deep. The variations of (y) and (q.) with depth are presented in Table below. The foundation is designed for a gross safe pressure of (250 kPa). Predict the footing immediate settlement (10 years) after the construction, using Schmertmann's method. [Answer = 34.4 mm]. Depth below G.S (m) 0-2 2-5 5 and below y (kN/m³) qc (kPa) 18 6000 17 5000 19 7500
Problem 2. A rectangular footing supports a square column concentrically. Given: Footing Dimensions: 3.0m wide x 4.5m long and 0.75m depth Column Dimensions: 0.40m x 0.40m Concrete, fc’ = 21MPa Steel, fy = 275MPa Concrete cover to the centroid of steel reinforcements = 110mm Unit weight of concrete = 23.5kN/m3 Unit weight of soil = 16kN/m3 Determine the concentrated load that the footing can carry based on beam action. Calculate the concentrated load that the footing can carry based on two-way action. If the allowable soil pressure at service loads is 200kPa, what column axial load (unfactored) in kN can the footing carry if depth of earth fill is 2.0m above the footing?
An eccentric footing shown has the following loads which acts on the center of the column: Pdl=400 kN Pll=650 kN Thickness of footing is 400mm f'c= 29 MPa; fy =420 MPa db=20mm Calculate the following: 1. The minimum and maximum soil pressure due to service loads 2. The minimum and maximum soil pressure due to factored loads
A square footing is proposed to be used to support a 500 mm x 395 mm RC column loaded with 666 kN dead load and 858 kN Ilive load. The bottom of the footing is 1.9 m below the ground. Assume soil weighs 19 kN/m3 and the allowable soil bearing pressure is 302 kPa. The thickness of the footing is 478 mm. f'.= 21 MPa and fy = 420 MPa. It is to be reinforced with 20 mm diameter. Use 24 kN/m3 as the unit weight of concrete. What is the size of the footing required in mm?
A wall footing is shown. The properties of soil and concrete are as follows:Unit Weight of concrete = 24 kN/m³Unit weight of soil = 16 kN/m³Allowable soil pressure = 200 kPaPDL = 200 kN/mPLL = 180 kN/mfc’= 28 MPafy = 280 MPa 1. Which of the following most nearly gives the effective soil pressure if the allowable soil pressure is 200 kPa. Hint: The effective soil pressure is the remaining pressure available to supports the loads after the effects of the soil and concrete weighs are subtracted. a. 120 kPa b. 154 kPa c. 178 kPa d. 204 kPa 2. Which of the following most nearly gives the minimum width of footing such that the effective soil pressure will not exceed? a. 2.78 m b. 3.67 m c. 4.24 m d. 5.10 m 3. Which of the following most nearly gives the ultimate shear due to factored loads acting on the critical section? a. 180 kN b. 260 kN c. 224 kN d. 281 kN
A column 500 mm x 500 mm square is supported by a 3.5 m x 3.5 m isolated spread footing. The column carries a dead load of 1200 kN and a live load of 1000 kN. The total depth of the footing is 550 mm with steel cover of 100 mm. Use NSCP 2001 provisions. Determine the punching shear stress at ultimate loads. A 1830.00 kPa 2154.11 kPa 1566.48 kPa D 1331.52 kPa
A rectangular footing has dimensions shown and is acted upon by a dead load of 668.00 kN and a live load of 551.00 kN. The column dimension is 282x572 mm where the shorter dimension is parallel to B. The thickness of the footing is 564mm. f'c=28 MPa and fy=420 MPa for diameter 20mm bars. A=3.3m and B=5.7m Calculate the ratio of the Ultimate Shear Force to Shear Capacity in one- way shear. Consider critical case only. Answer is 0.6175 (Complete Solution)A
0:YA O A comprehensive.. Example (1): A strip footing of width 3 m is founded at a depth of 2 m below the ground surface in a (c - 0) soil having a cohesion c = 30 kN/m? and angle of shearing resistance o = 35°. The water table is at a depth of 5 m below ground level. The moist weight of soil above the water table is 17.25 kN/m. Determine (a) the ultimate bearing capacity of the soil, (b) the net bearing capacity, and (c) the net allowable bearing pressure and the load/m for a factor of safety of 3. Use the general shear failure theory of Terzaghi. Example (2): If the soil in Ex. (1) fails by local shear failure, determine the net safe bearing pressure. All the other data given in Ex. (1) remain the same. Example (3): If the water table in Ex. (1) rises to the ground level, determine the net safe bearing pressure of the footing. All the other data given in Ex. (1) remain the same. Assume the saturated unit weight of the soil ya= 18.5 kN/m'. Example (4): If the water table in Ex.1…