Class :. Discipline : Error! Date : document property name. The WHP-B Jacket Structure will be skidded out from its fabrication position onto the transportation barge using hydraulic strand jack system. These strand jacks will be mounted on the existing skid frame temporary support structures that support the entire weight of the WHP-B Jacket Structure.

For typical strand jack specification and details, refer to Appendix â€” A. Detailed skid frame, tie back system and jacket member structural integrity strength checks are beyond the scope of this report.

The following basic and combined allowable stressed criteria are adopted Fy is material yield strength :. All welding shall comply with AWS1.

**Why Are I-Beams Shaped Like An I?**

It shall factorio biter settings ensured that the all the strands are clash-free with jacket or other temporary structures.

For detail strand jack support drawings, refer to Appendix â€” C. SAP Ver. The temporary support can and strand jack supports are modelled as finite element shell element with appropriate restraint conditions fixed-supported. The following presents the isometric view of the simplified structural model of strand jack support system:.

High stress zones i. Stress levels on Temporary Support Can are also less than 90MPa at interface between strand jack support and support can. Summary Conservatively, max Von Mises Stress is found to be Therefore, the strand jack design appears to be structurally fit.

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Document Information click to expand document information Date uploaded Mar 17, Did you find this document useful? Is this content inappropriate? Report this Document.Structural Beam Deflection, Stress Formula and Calculator : The follow web pages contain engineering design calculators that will determine the amount of deflection and stress a beam of known cross section geometry will deflect under the specified load and distribution.

Please note that SOME of these calculators use the section modulus of the geometry cross section "z" of the beam. You will need to determine the moment of inertia of the cross section and the distance from the neutral axis to the edge of your geometry. Davits refer to single mechanical arms with a winch for lowering and raising objects.

A davit is commonly used system designed to lower an emergency lifeboat from a ship to the embarkation level to be boarded. Manual ASD - page This spreadsheet calculates the a variety of resultant engineering requirments per. Roark's Formulas for Stress and Strain, 7th edition, Table 9. Stress Concentration Factors for Flat Plates and Cylinders : In a structure or machine part having a notch or any abrupt change in cross section, the maximum stress will occur at this location and will be greater than the stress calculated by elementary formulas based upon simplified assumptions as to the stress distribution.

Membership Register Login. Copyright Notice. Structural Beam Deflection Equations and Stress Formula and Beam Deflection Calculators Engineering Calculators Menu Engineering Analysis Menu Structural Beam Deflection, Stress Formula and Calculator : The follow web pages contain engineering design calculators that will determine the amount of deflection and stress a beam of known cross section geometry will deflect under the specified load and distribution.

Equation and Calculator for Stress and Deflection of Beam Constant cross section beam supported on both Ends Loaded at any Location using single applied load at center.

For every calculated shear stress t here is a corresponding induced normal stress; the value of the normal stress is equal to that of the shear stress. Cored Laminate Composite Stiffness Calculator Here also are discussed the effects of facing and core stiffness on sandwich bending stiffness so that the degree of approximation implied by simplified formulas neglecting facing and core stiffness is known.

Standard Seat Depth Height : 2. Span Range: 8 to 60 ft. Principal and Von-Mises Stress Equations and Calculator Principal stresses for 2 dimensional plane stress system and von-mises stress equations and calculator. Mohr's Circle Equation and Calculator Mohr's circle is a geometric representation of the 2-D transformation of stresses.

Section Modulus - Plastic Section Modulus PNA Section modulus is a geometric property for a given cross-section used in the design of beams or flexural members.

Vertical Row Bolt Spacing at 3". Ideal Pinned Column Buckling Calculator When a column buckles, it maintains its deflected shape after the application of the critical load. In most applications, the critical load is usually regarded as the maximum load sustainable by the column.Whether it is performing a quick check for a preliminary assessment or to confirm the output of other methods, hand calculations are an important component of any structural design.

Calculations which are clear, concise, follow a systematic process and are well referenced not only allows the design to be revisited at a later date without the need for excessive time and energy to get up to speed, but also can be a good template for further work like creating spreadsheets and the process is also beneficial for the design thought process.

StructX has provided example designs of three commonly adopted calculation layouts below. Although there are many ways hand calcs can be documented, good hand calculations should contain the following information in a well presented manner:. Home Resources Downloads About Contact. Future Records Whether it is performing a quick check for a preliminary assessment or to confirm the output of other methods, hand calculations are an important component of any structural design.

Although there are many ways hand calcs can be documented, good hand calculations should contain the following information in a well presented manner: In the Title Block The title of the project or job that the hand calcs are a apart of. A description of what the hand calculations will be looking at or investigating.

The design engineer who conducted the calculations and the date they were performed.

The checking engineer who conducted checks and the date they were done. If there are multiple pages then adding these is also beneficial. Each new section or deviation from one component to another should be labelled clearly. A clear, easy to interpret and correctly scaled diagram or picture Generally speaking, pictures should be used to show information that would otherwise require a detailed description or could be open to interpretation or confusion.

The direction and magnitude of any loading conditions. Relevant dimensions and locations of any key areas or components Any assumptions or limitations adopted. Materials and components under consideration. Any associated minimum design values and structural properties. If there are multiple options or variations on the market, reference to where the material or component was selected from can be an important factor. Any assumptions or limitations adopted. Equations or Conditions to be Satisfied.

Reference to where the equation or condition was obtained or originated. A list of equation specific values and design factors, the units of those values where applicable and reference to where they were obtained from.

The source of the information as well as the date that information was created or compiled can also be beneficial. Detailed workings showing the values applied to the equation or condition to be satisfied and the answer or result of such workings or calculations.Here is a list of best free structural calculation software for Windows.

Using these freeware, you can draw structures, assign various loads, and then perform structural calculations. These structural calculations are helpful in evaluating performance and stability of a structure.

Many of these software plot various graphs which makes the analysis task all the more easy. For drawing structures, you get enough number of tools and options including insert joints, members, support, etc. You can assign point load, joint load, member load, load combination, etc. On this list, I liked SeismoStruct the most. It is one the most featured structural calculation software with options like 3D plot, analysis movie creation, batch processing, etc.

It is free for academic users only.

## Structural Design Calculation Sample

RISA-3D is another nice software as it displays a lot of structural calculations. SeismoStruct is a featured structural calculation software for Windows. This software lets you create structures from scratch, assign them loads, and then solve various structural calculations. You can also use an example to get started with this software. It solves a wide number of structural calculations for you to analyze a structure.

In Pre-Processor tab, you can setup project preferences, make a structure by defining material properties, structural nodes, element connectivity, nodal constraints, restraints, etc. Now, in its Processor tab, you can run structural analysis of various types. The Post-Processor tab displays different structural analysis report, several structural calculations, and multiple graphs.

For students, it is one of the best structure calculation software for analyzing and solving physical structures. Note: This software is free for academic users for non-commercial use only. So, you need to register an account by providing your academic email ID.

It also lets you design a structure and then analyze it by performing various calculations. So, with these calculations, you can properly analyze a structure with respect to loads assigned to it.

LinPro is one more free structural calculation software for Windows. It lets you perform various calculations for a structure.

For that, it first allows you to create structures like continual beam, truss, multi-story frame, etc. You can then assign a load or mass to the structure and calculate various parameters. While assigning the load, you can set up various configurations as per your requirements like temperature, coordinate system, etc.

To initiate the structural calculation, use Analysis menu. From here, you can find static, modal, and dynamic analysis options. It displays tabulated results for each of these analyses. The structural calculations include displacements, reactions, axial and shear force, moment, modal displacement, eigenvalues, etc. These results can directly be copied or printed. It provides options to draw bending moment, shear force, reactions, deformations, axial force, etc. APM Structure3D is yet another free structural calculation software on this list.

It also lets you draw structure, assign loads, and then perform various structural calculations to analyze its stability and performance. The calculation results provided in it include static analysis, nonlinear analysis, buckling, P-delta analysis, eigenfrequencies, prestressed eigenfrequencies, and heat analysis calculations.Home Structural Calculations for Loft Conversions. The pack will contain a new floor design, which we create using our innovative beam calculations for loft extensions.

This design provides you with the vital plan you need to create a structure capable of carrying the new increased domestic floor loads and existing ceilings.

In addition to the new floor joists, trimmer joists will be required around the new stair aperture. Any floor joists supporting dormers or partitions may need to be designed as timber beams. It is standard building practice, and a building regulation requirement, that joists supporting partitions and baths are doubled.

This information is all contained in your essential loft conversion structural pack, including your beam calculations for loft extensions. As shown in the example above, existing ceiling joists are designed to withstand a much lighter load than a domestic floor load. This figure is calculated as a dead load and a storage live load. If your building is historic, there is a good chance they were sized with empirical rules of thumb, an outdated and generally unreliable method. Due to new building regulations, specifically brought in to improve safety and performance, a new floor structure needs to be provided in the loft space.

Using the correct beam calculations for loft extensions enables you to get the job done right first time and in a way that meets the building regulations.

This ensures the safety of your new structure.

All of our structural timber elements have deflection limited to 14mm maximum to control cracking of brittle finishes, another necessity addressed in your pack. In all but a very few cases, steel beams are required to carry the new floor where load-bearing walls are not available. In addition to this requirement, the new steel beams afford the modified roof support via eaves partitions.

If your loft conversion includes the addition of a dormer window, steel beam supports are usually required at this location in the form of a structural ridge beam.

In certain cases where load-bearing walls are available, it is sometimes possible to utilise these walls to support the new timber floors. If in doubt then steel supports should be used. All this is considered within your pack, designed to meet the unique requirements of your individual project. Your existing roof structure will require strengthening. The level of additional work is dependent on the current roof construction and proposed or required modifications to the roof structure.

The usual forms of roof construction encountered on most domestic loft conversion schemes takes two forms. The first is a traditional cut timber roof. This is most often found in older properties and utilises common rafters, purlins and king or queen post truss arrangements. The second type is gang-nailed factory-made roof trusses â€” this is usually found in newer properties c.

Both kinds of existing roof structure need to be modified to accommodate a habitable and safe space that complies with building regulations. Our bespoke loft conversions calculation pack directly addresses the need for modifications and strengthening, including beam calculations for loft extensions. It is important your existing plans detail the current roof construction. Often in loft conversions, it is practical and economical to upgrade the weathering, be it natural slate, concrete or clay tiles.

These will also have an impact on the section sizes of the structural members used to strengthen your roof.The rod of the picture is loaded with the force 2P which is uniformly distributed on Section D where applied. If the material of the rod is homogenous with Elastic Modulus E find the variation in len Calculate the maximum allowable shear force Vmax for the girder. The welded steel girder is having the cross section shown in the figure. It is fabricated of two mm x 50 mm flange plates and a A pressure-vessel head is fabricated by gluing the circular plate to the end of the vessel.

If the vessel sustains an internal pressure of kPa, determine the average shear stress in the glue. The beam is fixed at end B and free at end A. It is loaded at end A with the concentrated force 4F. Modulus of elast Determine the yield strength assuming a 0. Find the axial forces of the membersof the truss for the given loads. Calculate the max stress because of torsional moment on the outer layer of a steel hollow rod when two forces act on it from a distance of 50mm from the center.

Bolts M Create a free account and view content that fits your specific interests in structural engineering Learn More. Select Category. Read More. The Structural Engineer thestructuralengineer. To find out more about the cookies we use and how to delete them visit our Cookies page.

Allow cookies.Sign Up With Email. Sign Up. Discover Live Jobs Sign In. Follow Unfollow. Follow Following. Follow Following Unfollow. I adore creating Excel spreadsheets. Over the course of my academic and professional careers, I have learned a lot both from demanding teachers as well as helpful friends, and my Excel skills have improved immensely.

Below are some examples of work I've created for class assignments and additionally to streamline my own problem solving process. The spreadsheet where it all began: a 2D bridge truss that predicts bar and reaction forces with the input of point loads and overall dimensions. An extra credit assignment for my Statics class, this is my earliest example of good creative Excel work.

The real coup was "drawing" the bridge truss: both the bridge and the load "arrows" change in shape. With clever use of an X-Y scatter plot and cell entries, the bridge is drawn to scale when unique span, radius, and point loads are entered. This was part of a multi-sheet project for the complete design of an A-frame wood structure. The cells include NDS code calculations and specifications. My point of pride is this was my first use of logic statements: the cells refer to each other or to maximum or minimum values to populate "Ok" or "Not Good" next to the allowable vs actual member stresses.

I was also thrilled to find out how easy it is to cut and paste an image file right into Excel: "highlighting" the pertinent member with a transparent colored bar made each design sheet of the project so much clearer!

The logic statements now have conditional formatting: highlighting cells with standout colors here yellow to bring attention to areas that need to be addressed or redesigned. I created drop-down menus for section choice using Data Validation. The VLOOKUP function references a separate data sheet containing all the detailed specs for a particular steel section and populates only the necessary variable.

### Structural Design Calculation Sample

Data is so easy to organize in Excel! See how far I've come! This spreadsheet designs all the dimensions and rebar for a concrete T-beam per ACI and features all sorts of Excel goodies. Drop down menus, conditional formatting in several colors, superimposed jpgs, and recreation of code tables with guidelines for rebar selection.

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