Metal Viaduct Barrier and handrail

Company belif:   Hangzhou Zhonglianheng Metal Engineering Co.,Ltd. located in southeast of the beautiful city Hangzhou, China. We are a professional company specializing in the line of prefabricated Metal Building Designing, Detailing, Engineering, Fabrication, Manufacturing and Construct on EPC basis with more than 1100workers, plant area over 135,000SQMs,  and annual production capacity reached 120,000T. Fields are widely covered as below :   1. High-rise steel building 2. Equipment steel structure 3. Space steel structure 4. Steel Bridge 5. Mechanical Parking System 6. Light-Steel Structure house. 7. Industrial steel structure (eg.: power plant, mine transofrm, pig iron plant etc.) 8. Steel Bridges. 9. Building material(Synthetic Resin roof tile, PVC corrugated sheet, Sandwich panel, etc.)   2. Project info.:   ZHM is a company that designs, calculates, manufactures and assembles metallic structures. It is specialized in Space Truss structures designed with the ZHM structural system. This system consists of steel tubes and spheres.   The company is endorsed by more than 18 years of experience in the field of metal structures and numerous executions all around the world, mainly in China. ZHM has solutions for a wide range of applications such as airport facilities, industrial bays, stations and depots, sport arenas, exhibition sites, leisure centers and malls…   Focused on the airports, the Space Truss is very suitable for Hangars due to the large spans needed such as the convention center, express train station, airport terminal. This structure also holds 4 overhead travelling platforms of 60 tons each.   Other benefits of the Space Truss apart from the large spans and big loads hanging possibility are the following ones: Light weight structure. This provides a less strict limitation about the protection against fire compared to other metallic structures. Maximum level of prefabrication. The manufacture at the workshop is much more productive than at the construction site, and the quality has a higher guarantee.   Easy assembly. No adjustments or corrections at the construction site. Independence in the assembly order of the elements. This means that anything can be changed even after the assembly of the whole set. Assemble or disassemble any bar without considering the rest of the structure, so it is not necessary a preset order of assembly.   Great versatility of architectural and structural solutions. Our company advises many constructive solutions to suit your needs. Once the optimum geometry is defined considering aesthetical appearance and technical capability, the loads affecting the spatial structure are analyzed and finally a project is developed to define the elements (tubes, spheres, etc ...) of the Space Truss.   Our job consists in making projects together with engineer and architect studios, to get to the execution of the works: From the draft to the assembly. Asteca has made the structures for Hangars, heliports, connections between terminals, fingers to the runways, radio altimeters supports… We know that the aesthetical appearance is a determining factor and with the Space Truss we can generate all the geometrical forms that better suits the requirements of the client.   Product Description   The building is required to be of a weatherproof structure to accommodate a transformer room and a switchboard room, ring main unit (RMU) room, Comms. Room, reefer support office and a toilet block plus pump room.   The floor shall be constructed to provide a 3,000 kg/m2 loading (BS6399-1:1996) throughout based on the required floor loading of transformers and heavy switch board cabinets and shall include for all service ducts and recesses etc.   The substation shall house an oil cooled type of transformer and provision for containment of any leakage, fire fighting and smoke detection according the local regulations and guidelines.   Leakage bunds by means of dropped concrete floor and concrete bund walls with depth of approx. 1,200 mm to contain approx. 120% of the cooling oil containment of the transformer.   The concrete leakage bund is to be filled with clean gravel.   At the building ground floor level a galvanised steel grating platform shall be placed around the transformer support structure.   The transformer shall be supported by a concrete or steel beam structure above the bund.   At the location of the Switch Board Room concrete flooring with cable trenches is to be made to house cabling to and from the switchgear cabinets above that are sufficiently sized to accommodate all electrical and communications cabling as required. Sufficient clearance to be maintained between services as required. Trench covers to be integrated into a frame which is recessed in the top of the trench to protect the edges. Cover to be sized allowing easy removable by hand of one person.   The concrete foundation works provided with an earthing ring of mild steel bars and connected to the earthing grid with cast in Cadweld connection plates   Grating Platform Panels for Transformer Leakage Bunds   We will provide the hot dip galvanised grating platform panels above the transformer leakage bund complete with required steel support structure of steel angles, U- and I sections and fixing clips.    Chain Link Partitioning    We will provide the chain link partitioning between the transformer and the Ring Main Unit as shown on the Drawings. The fence partition shall consist of steel posts of 60.5 - 53.3 mm dia. pipe with a welded cover plate at the top and shall be provided with a 200 x 200 x 6 mm foot plate. Bolted between these posts shall be a welded framework with one vertical intermediate post made of 48.6 - 41.6 mm dia. steel pipe. Chain link with a mesh size of 50 mm with plasticized steel wire (3.2 mm) Where shown on drawings the partitioning shall be provided with heavy hinged doors with provisions for padlocking, made of the same pipe size and provided with the same type of chain link as described for the framework. Each link of the chain link mesh shall be welded to the framework