Determine the minimum footing length l of the columns

Assignment Help Civil Engineering

Reference no: EM13312173

Three columns A, B, C, are collinear, 500 mm in diameter and spaced at 2.0 m center to center. They would carry vertical downward load of 1000, 550, and 700 kN respectively and are supported on a single 1.0 m deep rectangular combined footing. The soil beneath this proposed footing has the following properties: t = 19.5 kN/m3, c' = 10 kPa, and d' =31o. The ground water table is at a depth of 25 m below ground surface.

a. Determine the minimum footing length L, and the placement of the columns on the footing that will place the resultant load at the centroid of the footing. The footing must extend at least 500 mm beyond the edges of columns A and C.

b. Using the results from part a, determine the minimum footing width B that will maintain a factor of safety of 2.5 against bearing capacity failure. Show the final design in a sketch.

Hint: Assume a value of B, compute the allowable bearing capacity, then solve for B. Show at least 1 iteration with whatever assumed width irrespective of whether or not you get the desired Factor of safety.

Reference no: EM13312173

Questions Cloud

Determine which boy is more powerful : A 200-pound boy lifts a 40-kg box off of the floor 1.3 meters in 0.7 seconds. determine Which boy is more powerful

Select a tool for project planning : Select a tool for project planning and scheduling from various tools available in the market

What thickness of coating should be used : A lens is coated with material of indexof refraction 1.38. What thickness of coating should be used to give maximum transmission

Introduction to data searching : Demonstrate Comprehension Level of Learning for preparation and submission of documents according to a specified form.

Determine the minimum footing length l of the columns : Assume a value of B, compute the allowable bearing capacity, then solve for B. Show at least 1 iteration with whatever assumed width irrespective of whether or not you get the desired Factor of safety.

Describes functionality of application and the justification : The Design Report is a single team report that describes the functionality of the application in its final form. You should include descriptions of all of your functions and sketch the storyboard associated with each function.

Determine which laws of thermodynamics are violated : An inventor claims that an engine produces 120 kw with a fuel consumption of 20 kg/h. The energy content of the fuel is 36,00 kJ/kg. The energy is received at a mean temperature of 500C and rejected at a mean temo of 50 C.

Find what is the stretch of the 360 cable under the load : What is the maximum load that a .75" diameter steel cable can hold if the UTS of the steel is 145,000 PSI and a safety factor of 1.5 is required.What is the stretch of the 360" cable under this load

What is the speed of the putty : You throw a glob of putty straight up toward the ceiling, which is 3.00m above the point where the putty leaves your hand. What is the speed of the putty just before it strikes the ceiling

User Account

All Pages