Design of steel transmission pole structures pdf

Design of steel transmission pole structures asce manual and reports on engineering practice and a great selection of related books, art and collectibles available now at. These guidelines apply to coldformed single and multipole tubular steel structures that support overhead transmission lines. It is only one of several types of electrical transmission line structures steel poles, wood poles, concrete poles, composite prestressed concrete transmission pole structures amazon transmission structure and ceramic post insulator replacement. Borrowers or their engineering representatives will need to complete and add to this. Fy for the plate and anchor bolts is 36 ksi and fc is 3 ksi. Design of steel transmission pole structures in searchworks. We are strategically located in the dallasfort worth area and have. Use of this specification should help eliminate ambiguities that might arise in the evaluation process of competitively bid steel pole procurements. B substation standards transformer platforms steel design and details. Transmission structure and foundations course 2018 in. Technical manual 1 design of monopole bases contents. Asce 123 prestressed concrete transmission pole structures manual of practice asce 104 recommended practice for fiberreinforced polymer products for overhead utility line structures manual of practice asce 91 design of guyed electrical transmission structures. This general reference identifies sources of design loads and load combinations from transmission structures typically applied to design foundations. Now let us discuss the types of electric poles used in overhead transmission lines.

This standard specifies requirements for the design, testing, assembly, and erection of coldformed tubular members and connections for steel electrical transmission pole structures. The primary reason is an esthetic one, since steel pole lines cost more than those supported by lattice towers. E transmission line standards steel pole structures aerial patrol warning signs details and locations. The dfi survey a few years later showed about 50% of electric transmission foundation professionals using traditional methods, and just under 40% using probabilistic design. Transmission line designadvanced tadp 640 steel polesdesign considerations miscellaneous topics module 2. Transmission structure and foundations course 2018 in portland. Asce 4805 design of steel transmission pole structures. Structure design examples are limited to woodpole construction. Design loads on transmission structures transverse design loads well calibrated and specified typically govern size of a structure longitudinal loads on intact systems differential icewindtemperature loads unequal wire tension secondary longitudinal loads and failure containment result of an initial component failure caused by extreme natural events or manmade attack. Rigid bus is stiff and will not move around during weather events. American society of civil engineers asce standard, design of steel transmission pole structures, manual 72, latest edition. Design of steel pole transmission structures, asce manual no.

Valmont newmarks preparatory pole design software impax and other commercial software systems are. Design codes, standards, and manuals used in power line. Transmission design voltages above 33 kv one off designs from substation to substation suite of structures long spans typically 300 metres and longer steel towers, steel poles, concrete poles special foundation designs. Design example 1 cantilevered overhead sign support truss. Types of electric poles in overhead transmission lines. American institute of steel construction aisc, specification for the design, fabrication and erection of structural steel for buildings. The article, design of direct embedment foundations for poles under. Design of latticed steel transmission structures, asce standard 1015, 2015. They are used in highvoltage ac and dc systems, and come in a wide variety of shapes and sizes. Ascesei 4805, design of steel transmission pole structures specifies requirements for the design, testing, assembly, and erection of coldformed tubular members and connections for steel electrical transmission pole structures. Design of overhead power transmission structures readonly.

In general, the line supports should have the following properties. The design of overhead electrical transmission lines to transport current is a. Ascesei 4811 design of steel transmission pole structures. Asce 1015 design of latticed steel transmission structures. Pdf analysis and design of transmission lines, structures and. Design of steel transmission pole structures standards.

In mexico, this protection represents an increase of the 30. The accuracy of the design of the structures and their components, based on the loads indicated on the owners drawings, is the sole responsibility of the contractor. Some state highway departments new york have developed their own methods, but no national standard exists. The primary reason is an esthetic one, since steelpole lines cost more than those supported by. Pdf on oct 15, 2017, sriram kalaga and others published analysis and. From the simplest tangent pole, to the most complex deadend switch support structures, western. Transmission structures california public utilities. Design of steel transmission pole structures, ascesei 48. Pls pole is a powerful and easy to use microsoft windows program for the analysis and design of structures made up of wood, laminated wood, steel, concrete and fiber reinforced polymer frp poles or modular aluminum masts. Specification sp061709102145 steel transmission poles.

This standard provides a uniform basis for the design, detailing, fabrication, testing, assembly, and erection of steel tubular structures for electrical transmission poles. There is currently no industry standard for the design of pole base plates. Standard design transmission lines type 3td 115kv 3pole tension dead end structure. Program borrowers with a basis for procuring adequate single pole and hframe steel transmission line structures. This revised and updated version of the 1978 asce publication is necessary due to the many new manufacturing methods and improvements in design technology that have developed over the years. Bus supports are the most basic structure found inside a substation. Switch attachment the steel pole vendor shall design the stonebreak road takeoff structure to accommodate the loads from the proposed 115 kv usco type avr11520. Ascesei 4805 design of steel transmission pole structures. As of 2009, there were 4,228,920 utility poles in california, carrying communications lines, cable tv facilities, and 209,219 2miles of electric transmission and distribution lines.

Unless otherwise specified, all materials shall be hotdip galvanized after fabrication. It notes that foundations should be designed to resist maximum designed loads relative. Transmission line design advanced tadp 640 steel poles design considerations miscellaneous topics module 2. Design of steel transmission pole structures asce library. He is a member of the iowa engineering and land surveying examining board, the asce design of steel transmission pole structures 4816 committee, the steering committee for asce ets 2015 transmission and substation structures conference and is a lean six sigma black belt. Plspole is a powerful and easy to use microsoft windows program for the analysis and design of structures made up of wood, laminated wood, steel, concrete and fiber reinforced polymer frp poles or modular aluminum masts. Design example 1 cantilevered overhead sign support. The hframe structures proposed for energize eastside are steel instead of wood and meet 230 kv design standards height, conductor spacing. Ascesei 4805 2006 zreference document ascesei 4805 2006 design of steel transmission pole structures, asce standard, american society of civil engineers, reston. The first utility pole was placed in 1844, and carried only telegraph signals. The structural member is an 8inch wide flange and the base plate is 14x14. C transmission line standards steel and concrete pole structures overhead. Before the initial publication of this standard in 2005, most electric transmission design professionals used asces engineering manual and report on engineering practice no.

Transmission line design manual bureau of reclamation. The supporting structures for overhead line conductors are various types of poles and towers called line supports. Ascesei 4805, design of steel transmission pole structures specifies requirements for the design, testing, assembly, and erection of coldformed tubular members and connections for steel electrical transmission pole st. Asce standard 4811 previously asce manual design of steel transmission pole structures design of prestressed concrete poles, pci journal, vol. Transmission line standards steel pole structures aerial patrol mile marker and number signs sh.

Two methods are available for selecting valmonts rapid response series poles. The surging demand for electric power has led to upgrading, designing and building new transmission lines across north america. Design of steel transmission pole structures 4811 asce. Materials and construction furnished shall conform to asce manual no 72, design of steel transmission pole structures. Ascesei 4819 provides a uniform basis for the design, detailing, fabrication, testing, assembly, and erection of steel tubular structures for electrical transmission poles. All transmission line steel pole structures shall meet the deflection criteria of section 2.

Moment capacities through out the pole length shall be furnished for all classes and heights for use with plscadd design software. Its main purpose is to provide support for rigid bus as it travels though the substation. This revised and updated version of the 1978 asce publication is necessary due to the many new manufacturing methods and improvements in design technology that have developed over the. Lattice steel towers lst, which consist of a steel framework of individual structural components that are bolted or.

Use api5lx52 round steel pipe fy52 ksi for the main structure members and astm. This revised and updated version of the 1978 asce publication is necessary due to the many new manufacturing methods and improvements in design technology that have developed over. Design steel transmission pole structures abebooks. The distance from the base of the post to the center of the sign is 23 ft. It is the responsibility of the pole suppliers to provide the parameters and supporting documentation for their poles strengths, but it is the responsibility of the design engineer. Bibliography includes bibliographical references and index. Structural steel is used for a variety of types of structures ranging from residential buildings to industrial plants, from mill buildings to cranes and from transmission towers to silos ballio. Transmission, distribution, and substation steel structures. Here are some design characteristics for consideration. Design of steel transmission pole structures standard. Our transmission poles are designed to meet the requirements of the nesc c2 standard.

Asce introduction the use of steel poles for highvoltage electrical transmission lines has increased rapidly during the last ten years. Examine current standards for steel, concrete, lattice, guyed and composite transmission structures analyze upcoming changes to steel transmission pole design standard asce 48 identify various soil conditions, foundation types and foundation selection criteria used in transmission structure design. Standardizing feature article foundation design for. Specification for standard class steel transmission poles issued march 23, 2017. Design of steel transmission pole structures, ascesei 4805. Design criteria for steel transmission poles by edwin h. We manufacture transmission towers for all terrains, environments and operating conditions. Design of steel transmission pole structures specifies requirements for the design, fabrication, testing, assembly, and erection of coldformed tubular members and connections for steel electrical transmission pole structures. Missouri university of science and technology scholars mine. The article titled, end restraints in steel angles in lattice towers presents a. Technical manual 1 design of monopole bases introduction 9 example 1. Design loads on transmission structures transverse design loads well calibrated and specified typically govern size of a structure longitudinal loads on intact systems differential icewindtemperature loads unequal wire tension secondary longitudinal loads and failure containment result of an initial component failure. Tapered tubular design is typically efficient and economical in deadend andstatic pole situations when compared to aisc standard shape structures. Jul 31, 2014 the first utility pole was placed in 1844, and carried only telegraph signals.

This standard provides a uniform basis for the design, detailing, fabrication, testing, assembly, and erection of steel tubular structures for electrical transmission. Summary ascesei 4805, design of steel transmission pole structures specifies requirements for the design, testing, assembly, and erection of coldformed tubular members and connections for steel electrical transmission pole structures. Steel transmission structures double cct 230 kv upgradable to single cct 500 kv 765 kv horizontal. Limit state design principles for various line components security classes and design working life more detailed coverage on electrical design and earthing using eg0 risk based earthing approach covers steel lattice, steel poles, concrete poles, wood poles and crossarms handbook hb331 published april 2012. Materials, standards, analysis and design march 12, 2018 portland, or. Pdf a study of power transmission poles researchgate. The distance from the center of the upright to the center of the sign is 24 ft. There are many different designs for transmission structures. Standardizing feature article foundation design for electric. Transmission lines carry electricity over long distances at high voltages, typically between 115 kv and 765 kv 115,000 volts and 765,000 volts. Design of steel transmission pole structures, ascesei 4805 9780784408377 and a great selection of similar new, used and collectible books available now at great prices. The design parameters are applicable to guyed and selfsupporting structures using a variety of foundations, including concrete caissons, steel piling, and direct embedment.

490 176 697 1034 121 1013 1248 1136 1469 844 870 1513 1367 1050 1029 51 954 1117 1497 1367 1231 1268 114 808 1343 743 1298 732 988 1492 1201 158 617 97 1415 1254 75