Shear Force and Bending Moment Of Simply Supported Beam With Point Load

The Civil Engineers should contain clear and concise ideas on shear force and bending moment to make perfect analysis of any structure as well as design of any structural member.

In this regard, Parag Pal, the famous B.E. Civil Engineer, has presented a useful video that focuses on shear force and bending moment of simply supported beam with point load to find out the sfd and bmd of any point load member.

In engineering term, a point load refers to an established load (force) that is situated with a single, specific point on a supporting structure or structural member.

In construction, a point load is set aside only for lighter structures or other cases where the load or force is comparatively light and not cause to undergo unnecessary stresses. To sustain structural reliability, designs and blueprints are properly planned to prevent the application of point loads in other situations.

If Point loads are not predicted, they can result in collapsing of structures.

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Published By
Rajib Dey
www.constructioncost.co

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Download Bar Bending Schedule Of Box Culvert

Definition of Bar bending

It is the method of bending reinforcing steel into shapes which are important for reinforced concrete construction.

Definition of Bar bending schedule(BBS)

Bar bending schedule alias schedule of bars refers to a list of reinforcement bars, a specified RCC work item that is shown in a tabular form for a smooth view. This table sums up all the necessary particulars of bars ranging from diameter, shape of bending, length of each bent and straight portions, angles of bending, total length of each bar, and number of each type of bar. This information can be used for making an estimate of quantities.

It includes all the details essential for fabrication of steel like bar mark, bar type and size, number of units, length of a bar, shape code, distance between stirrups (column, plinth, beam) etc.

While generating bar schedules, it is important to take proper care about length. In case of bending, bar length will be raised at the bending positions.

Benefits of the Bar Schedule:

When bar bending schedule is applied along with reinforcement detailed drawing, it makes the quality of construction superior.

Once bar bending schedule is prepared, cutting and bending of reinforcement is performed at factory and shipped to job site. This improves quick implementation at site and minimizes construction time and cost as fewer workers are needed for bar bending. Bar bending also circumvents the wastage of steel reinforcement (5 to 10%) and thus project cost is saved significantly.

It offers the perfect estimation of reinforcement steel requirement for all the structural members which are applied to workout complete reinforcement requirement for whole project.

Bar bending schedule offers the steel quantity requirement in a better way and thus delivers an option to make optimal use of the design in case of cost overflow.

The process becomes simple for site engineers to validate and approve the bar bending and cutting length throughout inspection prior to positioning of concrete with the support of bar bending schedule and thus facilitates in superior quality control.

It becomes easier to handle the reinforcement stock necessary for identified time duration.

It will facilitate to fabrication of R/F with structure.

To download the excel sheet for bar bending schedule, click on the following link 
Download Sheet

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Published By

Rajib Dey

www.constructioncost.co

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How to draw SFD and BMD of one sided overhand beam

This construction video provides some useful guidelines for creating the drawing of SFD and BMD for one sided overhanding beam with point loads.

Shear force and bending moment diagrams are represented as SFD and BMD. These are called as analytical tools and applied in combination with structural analysis to facilitate carrying out structural design by ascertaining the value of shear force and bending moment at a specified point of a structural element like a beam.

The structural engineers or other construction professionals, who handle forces in materials, utilize bending moment and shear diagrams. While designing steel beam the structural engineer can easily find out lightest shape through bending moment that can be applied to transmit this bending moment. In any case, steel stirrups are arranged in concrete beams every time.

These diagrams are also very useful in any actual situation, where it is required to compute the stresses in a bending moment. These diagrams help in finding out the type and size of a member of a specified material easily. Besides, the deflection is detected easily with either the moment area method or the conjugate beam method.

Go through the following video, to get the detailed process.

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Published By

Rajib Dey

www.constructioncost.co

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Virtual Work Method For Frames

Forces operating on frame can cause three types of internal forces like bending moment, axial force and shear force. Therefore, it is possible to view frame member as combination of truss and beam member.

In a simple term, virtual work method can be defined as “Completed External work is identical to completed internal work”.

In frames, axial deformation is generally small corresponding to bending deformation and it is normal to disregard axial deformations. In this video, all the prospective deformations are considered.

Virtual Work facilitates to work out determinate and indeterminate structures as well as estimate their deflections. Therefore, it can obtain everything that all the other methods can attain collectively.

Using the virtual work equations to a frame structure is very easy like segregating the frame into a series of “beams” and measuring the virtual work for each section.

Besides, while assessing the deformation of a frame structure, it is essential to take into consideration both bending and axial internal force components.

Ref.: civilengineeringdaily.com

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Published By

Rajib Dey

www.constructioncost.co

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