Illustrates about the term rectangular footings, Mechanical Engineering

Assignment Help:

Illustrates about the term rectangular footings?

RECTANGULAR FOOTINGS:

The design of rectangular footings is similar to that of the square footings. The major difference is that each direction should be investigated independently. Shear is checked for two way actions in the normal manner; but one way action is checked across the shorter side only. Bending moments must be considered separately for each direction and each direction will have a different area of steel required. The reinforcing steel running in the  long direction should be placed below the short direction steel so that it may have the  larger effective depth to carry the larger bending moment in that direction.

Note that the distribution of reinforcement in the rectangular footings is different than that of square footings. The reinforcement in the large direction should uniformly be distributed over the shorter footing width. A part of the required reinforcement in the short direction is placed in a band equal to the short side of the footing. The portion of the total steel that should go into in this band is 2/(P +1) where, is the ratio of the long side of the  footing to the short side of the footing. The remainder of the reinforcement is uniformly distributed in the outer portions of the footing. The distribution is demonstrated in below:

723_RECTANGULAR FOOTINGS.png

RECTANGULAR FOOTINGS PLAN


Related Discussions:- Illustrates about the term rectangular footings

Opresion reserch, ppt of appling queuing model in railwy reservation

ppt of appling queuing model in railwy reservation

Power sources-inverter type power sources, INVERTER TYPE POWER SOURCES Fo...

INVERTER TYPE POWER SOURCES For site welding and repair applications, a need was felt for long time to have light weight arc welding power source. Even though, a petrol driven ro

Transmission dynamometer and absorption dynamometer, Write down short notes...

Write down short notes on : (i) Dynamometer and Brakes. (ii) Transmission Dynamometer and Absorption Dynamometer. (iii) Epicyclic Gear Train Dynamometers.

Calculate the maximum shear stress, The square cross sections A and B a...

The square cross sections A and B are shown in Fig Q1, the dimensions b = 80 mm, thickness t = 10 mm. A shear force V is applied at the cross section, calculate the maximum she

Editing dimensions-autocad, Editing Dimensions The dimension edit comma...

Editing Dimensions The dimension edit commands, DIMEDIT and DIMTEDIT are used basically to adjust the position of the text part of a dimension. This is usually only necessary,

Spot welding-resistance welding processes, SPOT WELDING In this type of...

SPOT WELDING In this type of welding, after proper cleaning of the surfaces, the metals to be welded are kept one above the other and two copper electrodes are kept on both sid

Flow work and flow energy - thermodynamics, Flow Work and Flow Energy - the...

Flow Work and Flow Energy - thermodynamics: Flo w Work:  The flow work is energy needed to move the working substance against its pressure It is called as flow or displac

Find out moment of inertia of circular area, Find out Moment of Inertia of ...

Find out Moment of Inertia of circular area: Find out Moment of Inertia of circular area of radius a = 10 cm about its centroidal axis OX as illustrated in Figure Sol

Combined gas turbine/Rankine cycle, b. Assuming a 20 MW simple cycle gas tu...

b. Assuming a 20 MW simple cycle gas turbine with a firing temperature of 1600K develop an analysis of a combined cycle. Assume that Tmax in the Rankine cycle is 560 C, Pmax = 60

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd