Transmission line tower design software free download

Disadvantages of Steel Transmission Tower The tower material loss has been a major problem plagued the safe operation of the tower, although taken certain precautions, such as 6 m or less installed anti- theft bolts but the tower loss problems still occurs. Wind characteristics are as per IS: We have taken the plan of 4 legged single circuit transmission towers which is widely used as support to power transmission.

It is a method for selecting varying primary and secondary members under consideration of design loads, allowable stresses and design limitations. In this project, the design of steel lattice tower prescribed for transmission of electricity by the categorized gravity and lateral loads has been studied and analyzed for the employment of the project.

The analysis has been done by taking different combination of loads and then the design has been come into picture using the code module IS At all stages, the effort is to provide optimally safe design along with keeping the economic considerations.

Page 9 of 15 Objective Main Objective is designing of transmission tower of KV current distribution wire Focus of this project is to propose a steel lattice tower for electricity transmission system and analyze it under various loads thereby designing and checking the proposed members for failures.

ProVi8 The height of the tower is 25 m. The number of cables supported by this tower is 7. Page 10 of 15 Abstract In this project Analysis and Design of narrow based Transmission Tower is carried out keeping in view supplying optimum utilization of electric supply with available resources and increasing population in the locality of Allahabad.

Transmission Line Towers constitute about 28 to 42 percent of the total cost of the Transmission Lines. The increasing demand for electrical energy can be met more economical by developing different light weight configurations of transmission line towers. In this project, an attempt has been made to make the transmission line more cost effective keeping in view providing optimum electric supply for the required area by considering unique transmission line tower structure.

The objective of this research is met by choosing a KV Self Supporting Lattice Towers with a view to optimize the existing geometry. Then, the tower members are designed. For the Transmission tower, analysis was performed and the design done for the following loads: 1. Self Weight 2. Wind load and 3. Cable load India has a large population residing all over the country and the electricity supply need of this population creates requirement of a large transmission and distribution system.

Also, the disposition of the primary resources for electrical power generation viz. Transmission line is an integrated system consisting of conductor subsystem, ground wire subsystem and one subsystem for each category of support structure. Mechanical supports of transmission line represent a significant portion of the cost of the line and they play an important role in the reliable power transmission. They are designed and constructed in wide variety of shapes, types, sizes, configurations and materials.

The supporting structure types used in transmission lines generally fall into one of the three categories: lattice, pole and guyed. The supports of EHV transmission lines are normally steel lattice towers. The cost of towers constitutes about quarter to half of the Page 11 of 15 cost of transmission line and hence optimum tower design will bring in substantial savings. The selection of an optimum outline together with right type of bracing system contributes to a large extent in developing an economical design of transmission line tower.

The height of tower is fixed by the user and the structural designer has the task of designing the general configuration and member and joint details. The goal of every designer is to design the best optimum systems. But, because of the practical restrictions this has been achieved through intuition, experience and repeated trials, a process that has worked well.

Power Grid Corporations of India Limited has prescribed the following steps to. Page 12 of 15 Methodology The location of transmission tower is in Naini, Allahabad.

We are going to design four legged transmission tower. For the designing of this tower we have to calculate various data as per codal provision and as per guidelines of governing bodies. Plan: The plan on which we are working is four legged single circuit steel transmission tower. Figure 8: plan of tower Page 13 of 15 Method of Work A lattice tower is analyzed as a space truss. Each member of the tower is assumed pin-connected at its joints carrying only axial load and no moment.

Today, finite element computer programs are the typical tools for the analysis of towers for ultimate design loads. In the analytical model the tower geometry is broken down into a discrete number of joints nodes and members elements.

User input consists of nodal coordinates, member end incidences and properties, and the tower loads. For symmetric towers, most programs can generate the complete geometry from a part of the input. Loads applied on the tower are ultimate loads which include overload capacity factors. Pro does the design on a load case by load case basis. By default, for each load case, the software carries out design at a total of 13 sections including start and end and finds out the highest utilization ratio amongst all sections for that case.

It then moves on to the next case and follows the same procedure. If the highest utilization ratio for the second case is lesser than that obtained for the prior one, the former case is retained as critical case and the software moves on to the next one. If the utilization ratio for the second case being considered is greater than that for the first one, the second case becomes the new critical load case and it moves on to the next one.

Total views 19, On Slideshare 0. Students Click Here. Related Projects. Home Forums Structural Engineers Activities Structural engineering general discussion Forum software for transmission tower design. There was some discussion in this section earlier in the year or late last year.

Do a search on "transmission towers" in the forum and I'm sure you will find it. The software is utilized by many of the U. The entire software package is excellent. In my opinion sap is a good choice, easy to use software. Iam also working on a project related to 50 meter high communication tower and started finding the geometry of that system using sap Try this one.

Design includes connections also. Red Flag This Post Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework. Learn methods and guidelines for using stereolithography SLA 3D printed molds in the injection molding process to lower costs and lead time.

The wind shear at any level is shared by the single 2. The factor of safety of the tower is 1. Such bracing is used for towers upto 3.

The height of the tower is The base width of the tower is 3. X-X bracing: This is a double diagonal system without 5. The top width of the tower is 1. The Flange width in the tower is 2. The bearing capacity of the soil assumed to be 3. Such bracings are quite rigid, and may Analysis model for tower be used for towers up to 50m height.

The structure is Number of members: statically indeterminate. The horizontal members are Number of joints: redundant members and carry only nominal stresses. Loading: Self weight, Wind load, 4. Pro head room is required.

The structure is statically determinate. Such bracing can be used for towers of 50 to m height. In most of the transmission line towers, the lower panels is either K- or Y- braced and upper panels are X-braced or XB- braced. X B X bracing: This is a combination XX and XB bracing where horizontal members are provided only at the level of crossing of diagonals. The structure is statically indeterminate. However, the length of the diagonal is reduced. The system is suitable for towers 50 to m height.

W-bracing: This system uses a number of overlapping diagonals. The system is statically indeterminate. However, the effective length of diagonals is reduced the system is quite rigid and may be used for towers of 50 to 20m height. Y-bracing: This system gives larger head room can be used for lower panels. The system is statically determinate. In most of the transmission line towers, lower panels are either Y-braced on k-braced and upper panels are X-B braced or X-braced.

Arch bracing:Ssuch a bracing can be adopted for wider showing stresses panels. This system also provides greater head room. Subdivided V-bracing: Such a bracing are used for tall towers of communication systems, radio and TV transmission etc; for heights between 50 to m.

Diamond lattice system: A typical diamond lattice system is used for towers of to m height. Rigid horizontal diaphragms are used at top and at intermediate sections, preferably at intervals of 25 to 30m, to increase the torsion stiffness of the cross-section. Components of the tower 1. Cables 2. In actual practice the factor k1depends on type and importance of structure, design life of structure and basic wind speed in the region.

Table 1:Values for factor k1 Value of factor k1 Class of Mean Factor for basic design wind speed structure design 33 39 44 7 50 life All 50 1. Self Weight size of structure for determining k2. Terrains are classified in 2. Wind load and to four categories and structures according to their heights 3. Cable load into three classes. Self Weight Categories of structure The self weight is precisely considered as the dead load of There are mainly four categories of structure for terrain, the structure as these loads neither change their position nor height and structure size which are as follows: do they vary their magnitude.

Category 2: Wind load This represents open terrain with well scattered obstructions The term wind denotes almost exclusively to horizontal wind. Category 3: Here, we have followed Design wind speed as per IS: This represents terrain with numerous closely spaced