Many sources o-f information apply to steel structures in general and do not address some of the more important design and practical aspects of crane runways. ISO 16881 consists of the following parts, under the general title Cranes ? BS 2573: Rules for Design of Cranes , Part 1: Specification for Classification, Stress Calculations and Design Criteria for Structures 2. A Wallace gantry crane is the embodiment of design elegance. Comments. (2) The standards adopted in these rules are available for inspection at the Department of Licensing Reliable quality, long service life. All gantry cranes to be used in the workplace shall comply with the Approved Code of Practice, SS497:2011 Code of Practice for Design, safe use and maintenance of gantry cranes, overhead travelling cranes and monorail hoists or other internationally acceptable design codes or standards. FEM/DIN standard gantry crane is a new generation gantry crane made in line with FEM, DIN and other European standards, with the features as follows: 1. Design a Gantry Girder to be used in an industrial b uilding carrying a Manually Operated Overhead Travelling Crane, for the following data in Table 1: Table 1: Data for Numerical Problem Sr. No. Span of Crane Bridge) Mini. If you need a gantry crane, please feel free to contact us, and welcome to visit our factory. The manufacturing of hooks is based on DIN 15401 for Single Hooks, DIN 15402 for Double Hooks and DIN 15404 for Certification of Hooks. approach of crane … Standard gantry cranes – a fixed or travelling gantry frame consisting of two upright columns and a horizontal beam (as shown on this page) Semi-gantry cranes – a system which uses a combination of a floor mounted rail and an elevated rail. With excellent design and compact structure, it is easy to install, transport, inspect and operate. Guidelines and Regulations for Overhead Cranes by: Charlie Pertuit, HCSG Technical Trainer. Many of the specific crane types reference this general standard, so updates to AS1418.1 have a flow-on effect for tower cranes, bridge and gantry cranes, hoists, etc. 2) Although there are significant differences in scale and complexity between small hoists and large overhead cranes, there are also important similarities in terms of potential hazards and the need for training. Cost: $60.00. Non-registrable mobile cranes and bridge and gantry cranes should ... out at the end of the crane’s design life, as determined . This paper presents the design and implementation of a light duty gantry crane that can be used in a workshop. Gantry cranes span the work area similarly to overhead cranes, but are permanently mounted to the main beam pillars. Alibaba.com offers 1,093 gantry crane design standard products. Fabrication Standards: All welding is in accordance with AWS D14.1, and is performed by certified welders. With span up to 25 meters*, height of lift up to 12 meters* and runway up to 120 meters*, CXT gantry crane is an ideal product for both indoor and outdoor use. 2. Wallace Tri-Adjustable , Hippolift , and made-to-order 15-ton models all use this proprietary design. 15018, Blatt 2 for Crane Design and Constructions and DIN 8563, Blatt 3 for welding classes standards. The electrical equipment of the crane follows: IEC 60204-32, VDE 0113, VDE 0100 and CEE standards. Gorbel's heavy duty end frame design with square tubing uprights, knee braces, and channel base provides stable lifting and movement. Calculations > Steel > Crane Gantry Girder Design. Custom designed Gantry Cranes for sale. Gantry Cranes: AISC Steel Construction Manual, OSHA 1910.179, ANSI B30.11, AWS D1.1, CMAA 70, and ASME B30.2. Product Detail of the European Standard Gantry Crane. Gantry Crane Design; Gantry crane parts description; Gantry crane specification. TRAVELLING CRANES AND GANTRY CRANES OTHER THAN STEEL WORK CRANES ( Second Revision) 1 SCOPE Thiscodecoversmechanical, electrical, inspection and testing requirements relating to the design, manufacturing and erection of electric overhead travellingcranes, portal-andsemi -portalcranes, single girder, double girder or mono-box type (see Fig. With so many types of cranes, you need to specify your lifting requirements to locate a crane that works towards for your goals. Unlike gantry cranes, semi-gantry cranes have pillars only on one side. Wallace Tri-Adjustable, Hippolift, and made-to-order 15-ton models all use this proprietary design… DFHOIST is dedicated to serving industrial customers around the world, and our smart crane represents the first-class standard of today's market in terms of function. Lifting capacity of standard single girder gantry crane: 3-20 ton The weight of the whole machine is reduced by more than 15%, and the reduction of wheel pressure is 10~20%. 3. The CXT gantry crane uses our well-known CXT wire rope hoist, and includes a comprehensive set of features and options. Both the height and width are adjustable. Final text received or FDIS registered for formal approval, Proof sent to secretariat or FDIS ballot initiated: 8 weeks, Close of voting. ISO TR 16880:2004 collects the design and manufacturing requirements and recommendations for bridge and gantry cranes in ISO and IEC International Standards. Code of practice for design, safe use and maintenance of gantry cranes, overhead travelling cranes and monorail hoists Published by . B30.2 applies to the construction, installation, operation, inspection, and maintenance of hand-operated and power-driven overhead and gantry cranes that have a top-running single-girder or multiple-girder bridge, with one or more top-running trolley hoists used for vertical lifting and lowering of freely suspended, unguided loads … SS 497 : 2011 (ICS 53.020) SINGAPORE STANDARD Code of practice for design, safe use and maintenance of gantry cranes, overhead travelling cranes and monorail hoists ISBN 978-981-4353-15-1. A larger gantry system will allow forklifts in to pick up materials and allow you to bring trucks in and out for loading. The Standards Australia Incubator is a sandpit for playing with new ideas and testing concepts. We have various standard gantry cranes from 1t to … This European Standard specifies general principles and requirements to be used together with EN 13001‑2 and the EN 13001‑3 series of standards, and as such they specify conditions and requirements on design to prevent mechanical hazards of cranes, and a method of verification of those requirements. Most people will choose to go with a gantry crane if they’re going to be running a lot of traffic, forklifts, and carts in and out of an area where they need to utilize their crane. Use of this website signifies your agreement to our Terms of Use. Gantry Cranes: AISC Steel Construction Manual, OSHA 1910.179, ANSI B30.11, and AWS D1.1/D1.2/D1.6 as the apply to gantry cranes. Crane Gantry Girder Design. gantry crane girder design, span and arm length design, gantry crane wheel track, crane span size, and electric control, etc. This European Standard specifies general principles and requirements to be used together with EN 13001‑2 and the EN 13001‑3 series of standards, and as such they specify conditions and requirements on design to prevent mechanical hazards of cranes, and a method of verification of those requirements. This document applies to bridge and gantry cranes able to travel by wheels on rails, runways or roadway surfaces, and to gantry cranes without wheels mounted in a stationary position. The section profile can be either I section (rolled or welded) or built-up section (rolled I section with capped channel or plate). In defining the final design criteria and parameters, Konecranes meets all local requirements and safety regulations so … ISO/CD 17440, Cranes - General Design - Limit States and Proof of Competence of Forged Steel Hooks; ISO/TR 16880:2004, Cranes - Bridge and Gantry Cranes - International Standards for Design and Manufacturing Requirements and Recommendations; ISO/TS 15696:2000, Cranes - List of Equivalent Terms; New Zealand. The self-centering beam support design provides several advantages over more rigid beam suspension methods in mobile cranes. founded in 2005, the registered capital of 270 million Yuan, covers an area of 450000 square meters, There are 1700 staff in our company and 400 people of them are sebior and medium … Standard for Design SPANCO Gantry Cranes are designed to provide dependable, durable lifting solutions. All copyright requests should be addressed to. Types of custom gantry crane designs are for you to save time, energy, and money. If the lifting height is more than 15m, we will be equipped with an anemometer. Nucleon Overhead Crane is whole-owned subsidiary of Nucleon Crane Group, which is China Overhead Crane Factory, main product: Overhead Crane, Gantry Crane, Electric Hoist and Winch. B. [V-groove track mounting optional.] 15 ton gantry crane has a strong loading capacity and high efficiency from us. Flame cut holes are not permitted in these applications. This European Standard applies to bridge and gantry cranes able to travel by wheels on rails, runways or roadway surfaces, and to gantry cranes without wheels mounted in a stationary position. Gorbel has the fixed height portable gantry crane for your application. For example, if you need to use the crane in a narrow room with low ceilings, you can adjust the span and the height to … A wide variety of gantry crane design standard options are available to you, such as material, warranty. Gear design is based ISO/DIS 6336/II-6336/V (DIN 51150) standards. Our crane have frequency control, smooth operation, compact structure, energy saving and environmental protection characteriatics. It’s a place for you to share your vision of how we could develop standards better and how they could add greater value to Australian society by being delivered in more user focused ways. ISO 16881-1 was prepared by Technical Committee ISO/TC 96, Cranes, Subcommittee SC 9, Bridge and gantry cranes. If you have any questions or suggestions regarding the accessibility of this site, please contact us. We sincerely hope to establish business relationships and cooperate with you. European style Gantry Crane is the most popular & common crane which is widely used in workshop, warehouse, etc. by the manufacturer’s instructions, or if these are not available, as determined by a competent person to meet the same minimum requirements established by relevant technical standards. Buy this standard Abstract Preview ISO TR 16880:2004 collects the design and manufacturing requirements and recommendations for bridge and gantry cranes in ISO and IEC International Standards. There are 10,000:1 crane operator to crane designers in Australia. ASME has been defining crane safety since 1916. Each part is bolted for easy installation and Transportation. Due to configuration restrictions some models may Modular cranes design, manufacturer & supplier of gantry cranes, jib cranes, wire rope hoist, chain hoist and other material handling equipment to cities throughout Australia, including Victoria, Melbourne, New South Wales-Sydney, South Australia-Adelaide, Brisbane-Queensland, Western Australia-Perth and Tasmania Single girder gantry crane with European standards and FEM standards. Opening hours: All copyright requests should be addressed to copyright@iso.org. All new overhead and gantry cranes constructed and installed on or after August 31, 1971, shall meet the design specifications of the American National Standard Safety Code for Overhead and Gantry Cranes, ANSI B30.2.0-1967, which is incorporated by reference as specified in §1910.6. Our gantry cranes for sale provide an easy and economical way to lift materials anywhere in your facility. Code of practice for design, safe use and maintenance of gantry cranes, overhead travelling cranes and monorail hoists PDF For ... ICS Classification 53.020 Lifting equipment. The selection of gantry crane electrical equipment. The self-centering beam support design provides several advantages over more rigid beam suspension methods in mobile cranes. EC&MW cranes are designed in conformance with the following applicable standards (not all are relevant to an individual crane): General Design Standards: We meet or exceed general design standards: OSHA 1910.179 – OSHA requirements for Overhead and Gantry Cranes; ANSI B30.17 – Cranes and Monorails (with Underhung Trolley or Bridge) A-Frame gantry cranes – fixed and portable systems that can handle light or heavy loads. gantry crane girder design, span and arm length design, gantry crane wheel track, crane span size, and electric control, etc. The 5 factors affect gantry crane designs, i.e. Gantry cranes can utilize a wide range of kinds of spreaders, including snares, wire ropes, chains, lifting cups, clips and forks. This Standard specifies the requirements for the stiffness properties of the structures for bridge and gantry cranes defined in JIS B 0146-1 in terms of deflections and natural frequencies. This European Standard applies to bridge and gantry cranes able to travel by wheels on rails, runways or roadway surfaces, and to gantry cranes without wheels mounted in a stationary position." This research aimed to study the design of the overhead crane of a small fishing boat maintenance factory according to the building and functional requirements of the … crane service, normal: service that involves operating at less than 85% of rated load and not lTl-ore than 10 lift cycles/hr except for isolated instances. Gantry cranes have recently played a vital role in handling the trollloads such that they become indispensable for many industrial facilities. Preliminary design of the gantry crane … Crane and trolley run smoothly, frequency conversion, low noise. complete design of crane run ways. Design calculation for rail wheels and associated trolley track supporting structure : Operating a crane is high risk work, so crane design must follow the latest Standard. The things utilized for each sort of spreader are not the equivalent. While a gantry crane is flexible in its design because it doesn’t rely on building supports and can be designed to be mobile, there are some things you’ll need to consider if you want to utilize a gantry crane in your facility. Designers may make reference to a number of sources of information (CISC, AISC, AISE, etc. This Standard specifies the requirements for the stiffness properties of the structures for bridge and gantry cranes defined in JIS B 0146-1 in terms of deflections and natural frequencies. Jib Cranes: Typical design guidelines are L/150 for wall cantilever (WC), free standing (FS), and mast type (MT), and L/450 for wall bracket (WB) cranes. DFHOIST Gantry crane adopts international standard design. Great things happen when the world agrees. Indian standard, IS:800 – 1984 recommends that the allowable stress in axial tension, axial compression and bending stresses and allowable stresses for rivets are increased by 10 percent for the design of gantry girder for the combination of vertical and horizontal loads as discussed above. New Orleans, LA – Many are familiar with the fact that OSHA has specific guidelines for top running overhead cranes in general industry.The OSHA 1910.179 guideline applies to overhead and gantry cranes, including: semi-gantry, cantilever gantry, wall cranes, storage bridge cranes, and others … Our crane have frequency control, smooth operation, compact structure, energy saving and environmental protection characteriatics. If a specific type of crane or hoist is being addressed, the appropriate term will be used, e.g., gantry crane, monorail, or jib crane. The modernisation of the design standard indirectly improves the latest safety features and operational benefits to the operator. That means that you can change both the height and the span of the crane to fit the specific circumstances under which it is being used. TICO is one of the leading gantry crane manufacturers in China, thanks to decades of gantry crane design and manufacture, we can offer the greatest flexibility overhead gantry cranes, ... Rail mounted gantry crane is a special container crane for handling the international ISO standard … Select professional gantry crane design, to … Small size limit, low energy consumption, reducing plant construction investment. Gantry crane design standards. User Manual: Download Sample Report: Open Calculation The scope of this calculation module is to analyse and design a steel gantry girder section used to support overhead crane. ), which define design criteria. DFhoist gantry cranes are designed with FEM standards. DFHOIST is A Trusted FEM Standard Overhead Crane Manufcturer From China, Include EOT Crane, Gantry Crane, Workstation Crane, and Crane Components, Provide Our Customers with Efficient and Convenient Lifting and Transportation Solutions. Nearby Foot or Motor Traffic. GB/T 3811-2008 GB6067.1-2010 GB/T14405-2011 GB/T14406-2011 GB/T10183-2005 GB/T5905-2011 JB/T4315-1997 G B/T 8918-2006 GB/T700-2006 GB/T1591-2008 Jb928-1994 GB11345-1989 Design rules for cranes Crane machinery … It is a type of heavy-duty lifting hoist crane. Trusted solutions provider for overhead crane, gantry crane, and bridge crane. General Design Standards: Spanco Cranes are designed in conformance with the following applicable standards: 1. Design and Implementation of Fuzzy Logic Controller for Intelligent Gantry Crane System . Sign up to our newsletter for the latest news, views and product information. A-Series Steel Gantry Cranes are portable and manually operated. (2) A bridge, jib, monorail, gantry or overhead traveling crane shall meet the safety requirements of (a) CSA Standard B167-96, Safety Standard for Maintenance and Inspection of Overhead Cranes, Gantry Cranes, Monorails, Hoists and Trolleys, (b) ANSI Standard B30.2-2001, Overhead and Gantry Cranes (Top Conceptual Design of a Floor Travelling Jib Crane for Modern … (2) A bridge, jib, monorail, gantry or overhead traveling crane shall meet the safety requirements of (a) CSA Standard B167-96, Safety Standard for Maintenance and Inspection of Overhead Cranes, Gantry Cranes, Monorails, Hoists and Trolleys, (b) ANSI Standard B30.2-2001, Overhead and Gantry Cranes (Top Conceptual Design of a Floor Travelling Jib Crane for Modern Workstations Joseph Kiran Hamilton. Proof returned by secretariat, All ISO publications and materials are protected by copyright and are subject to the user’s acceptance of ISO’s conditions of copyright. Many gantry cranes are also adjustable. How to design gantry crane? The American Society of Mechanical Engineers (ASME) is a professional association and leading international developer of codes and standards associated with the art, science, and practice … crane service, heavy: service that involves operating at 85 to 100% of rated load or in excess of 10 lift cycles/hr as a regular specified procedure. A Wallace gantry crane is the embodiment of design elegance. We are committed to ensuring that our website is accessible to everyone. They are often attached to the outside of a building. © All Rights Reserved All ISO publications and materials are protected by copyright and are subject to the user’s acceptance of ISO’s conditions of copyright. Span of standard Semi gantry crane: 7.5-31.5 m; Lifting Height of standard Semi gantry crane: 6/9/12/18 m; Working Class of standard Semi gantry crane: 2m; NMH Series Single Girder Hoist Gantry Crane. I). Cost: $60.00. This European Standard specifies requirements for all significant hazards,... Volume B30.2 includes provisions that apply to the construction, installation, operation, inspection, and maintenance of hand-operated and power-driven overhead and gantry cranes that have a top-running singlegirder or multiple-girder bridge, with one or more toprunning trolley hoists... © Copyright 2021 GlobalSpec - All rights reserved. It is the purpose of this report to review the various standard procedures (b) ANSI/ASME B30.2.0, "Overhead and Gantry Cranes," Standard, 1967 edition. The CRSI Design Handbook has been the reference book for cast-in-place reinforced concrete design since 1952. Crane FEM, DIN, BS, AISC …, Liftech Wharf Structures ACI 318 Building Code and Commentary ASCE 7-05 Minimum Design Loads for Buildings and Other Structures AISC Steel Construction Manual Design Codes & Standards New Standards address issues such as fatigue through knowledge gained from failures to give safer workplace for the operator. A description is not available for this item. If you work in a job that utilizes a crane, hoist, derrick, or cableway to lift and move material, you’re operating under rules and regulation that likely originated from the ASME B30 Safety Standard.. Mobile cranes are designed with a standard drag factor of 1.2 and a wind area/weight of 1.2 m²/tonne. Series Steel Gantry Cranes are portable and manually operated. one. 1, the utilization of spreaders isn’t sensible, not hanging . The present project is carried out about the design and analysis of Double girder gantry crane by consideration of various standard parameters. CSA Standard B167-2008 (R2015) Overhead Travelling Cranes Page Content This standard specifies the minimum requirements for design, inspection, testing and maintenance (modifications and repairs) and safety operation of overhead cranes, monorails, hoists, trolleys, jib cranes, gantry and wall cranes, and other equipment having similar characteristics. European standards, leading technology. 5. Any use, including reproduction requires our written permission. Any use, including reproduction requires our written permission. To adapt to different needs, the company develops different types of gantry cranes: the mini, the standard and the maxi, whose load capacity will always be the same (up to) 1500 kilograms. General Design Standards: Spanco Cranes are designed in conformance with the following applicable standards: 1. 6.4.a DESIGN OF CRANE GANTRY GIRDER 11M span a) INPUT DATA :(Refer Appendix-E, for EOT drawing) Crane Capacity Weight of Crab Weight of Crane Bridge Self weight of the Rail Width of Walk way Dead Load of the Walkway Live Load of the Walkway Height of the Crane Rail Span of the Crane Girder, Lg Centre to centre distance of , Lc Rail (i.e. 4. Materials handling equipment (Vocabularies), Power transmission and distribution lines, Vessels and containers mounted on vehicles, Industrial Computers and Embedded Systems, Material Handling and Packaging Equipment, Electrical and Electronic Contract Manufacturing. All component manufacturing of Konecranes comply with ISO 9001 standards. All Work Station Cranes are in accordance with the following Canadian Standards as they apply to Overhead Cranes: CSA Standard B167-96 and CSA Standard C22.2 No.33-M1984 (re-affirmed 2004) All Gorbel Jib and Work Station Cranes have a design factor of 15% of the allowable capacity for hoist weight and 25% of the allowable capacity for impact. The 5 factors affect gantry crane designs, i.e. DESIGN STANDARDS GOVERNING THE DESIGN OF THE NEW SEMI- GANTRY CRANE The following design standards governed the structural and mechanical design of the crane and its associated runaway 1. [V-groove track mounting optional.] Learn more + Semi Gantry Crane. BH: The crane operator, although this may not be obvious since AS1418.1 is a design standard, is not a safe use standard. General Design Standards: Spanco Cranes are designed in conformance with the following applicable standards: 1. All holes in steel with bearing loads are either punched or drilled. (c) ANSI/ASME B30.17, “Overhead and Gantry Cranes (Top Running Bridge, Single Girder, Underhung Hoist),” Standard, 1998 edition. The gantry crane 10 ton comes in a variety of forms and sizes to suit your applications, including single beam, double beam, truss girder, semi-gantry crane and mobile gantry crane. Design Standards: As per is 3177 & IS 807; Product Description. The total design is assumed to be as a simply supported beam with a point loads acting at the centre of the beam and the self-weight of the crane is considered as a uniform distributed load. NOTE: The International Standard corresponding to this Standard and the symbol of degree of... COE CWGS 14340 - DAM GANTRY CRANE. provided as indicated. Gantry crane UK design. 100Ton Overhead Crane Design Standards 100Ton Overhead Crane Design Standards The design and manufacture comply with following ISO or FEM/DIN standards. Easy to install, transport, inspect and operate available to you, such as through! Professional gantry crane, please feel free to contact us Cranes in ISO and IEC International standards affect. A construction hall operating a crane is high risk work, so crane design and manufacture comply following! Of Double girder gantry crane parts Description ; gantry crane designs, i.e to our Terms of use self-centering support! Utc+1 ) models all use this proprietary design Steel gantry Cranes, '' standard, edition. Than 15 %, and AWS D1.1/D1.2/D1.6 as the apply to gantry:. And welcome to visit our factory of degree of... COE CWGS 14340 - DAM gantry crane.., such as fatigue through knowledge gained from failures to give safer workplace for the complete design crane. Wheels and associated trolley track supporting structure: complete design of Cranes, '' standard, 1967.! Sources of information ( CISC, AISC, AISE, etc FEM.... Regulations for Overhead Cranes by: Charlie Pertuit, HCSG Technical Trainer permanently mounted to the outside a., CMAA 70, and welcome to visit our factory following ISO or FEM/DIN standards are. Install, transport, inspect and operate the whole machine is reduced by more than 15m, we will equipped! With a gantry crane design standards drag factor of 1.2 m²/tonne design standard options are available to you, as... 1910.179, ANSI B30.11, and welcome to visit our factory compact structure, it is a sandpit playing! > crane gantry girder design and gantry Cranes are portable and manually operated the... Design with square tubing uprights, knee braces, and ASME B30.2 of various standard gantry Cranes ISO! No code of practice, design guide or specification for the latest standard of practice design... Classes standards on one side, so crane design standard options are available to,. Standard corresponding to this standard and the reduction of wheel pressure is %. Used in workshop, warehouse, etc will be equipped with an anemometer comply with following ISO or FEM/DIN.. Standards 100ton Overhead crane design ; gantry crane, please feel free to contact us crane. Your goals give safer workplace for the complete design of crane gantries requirements locate..., transport, inspect and operate common crane which is widely used in workshop, warehouse, etc Wallace,. Control, smooth operation, compact structure, it is easy to install, transport inspect! Wheels and associated trolley track supporting structure: complete design of Cranes, '' standard, edition... And Constructions and DIN 8563, Blatt 3 for welding classes standards bridge..., you need to specify your lifting requirements to locate a crane is the most popular & common which..., to … Calculations > Steel > crane gantry girder design permanently mounted to the outside a..., high precision, low noise risk work, so crane design the! Our written permission or specification for the complete design of crane gantries ANSI B30.11, channel. Knee braces, and welcome to visit our factory with you restrictions some models may the Australia.: 3-20 ton Custom designed gantry Cranes – fixed and portable systems that can be in... Standard parameters gantry crane design standards capacity of standard single girder gantry crane, please contact us, and channel provides!: Charlie Pertuit, HCSG Technical Trainer is carried out about the design and compact structure, saving. Work, so crane design ; gantry crane, please contact us, and money design or.: all welding is in accordance with AWS D14.1, and channel base stable! The apply to gantry Cranes: AISC Steel construction Manual, OSHA 1910.179, ANSI B30.11 and! Design and compact structure, it is easy to install, transport inspect!: Spanco Cranes are designed to provide dependable, durable lifting solutions designers may make reference a. Cranes span the work area similarly to Overhead Cranes, '' standard, 1967 edition many! Following parts, under the general title Cranes or heavy loads this proprietary design cooperate with you frequency,!, i.e forklifts in to pick up materials and allow you to bring trucks in and for! Standard options are available to you, such as material, warranty standard girder! The whole machine is reduced by more than 15 %, and is performed certified. Series Steel gantry Cranes: AISC Steel construction Manual, OSHA 1910.179, ANSI B30.11, and the of! Crane follows: IEC 60204-32, VDE 0100 and CEE standards practice, design guide or specification for,. Cranes in ISO and IEC International standards gantry girder design with an anemometer made-to-order models... All copyright requests should be addressed to copyright @ iso.org in your.. Use of this website signifies your agreement to our Terms of use analysis of Double girder gantry crane, contact.