Superstructures steel

Apparently a vault had been constructed around the superstructure of the furnace. It was 4.5 x 6 m in cross section and 4 m high. It was constructed of 20-cm-wide flange beams on 0.8 m (front) and 1 m (sides) centers faced on both sides with 10-mm steel plates and filled with dry sand. The explosion displaced the walls about 6 cm. The top of the vault which was supported by a 30-cm beam on top of a 20-cm beam was deflected about 8 cm. Steel doors mounted to slide in angle-iron tracks were blown off. A number of 1.9-cm bolts holding the door tracks were sheared cleanly. The furnace was driven down into the concrete floor and a penetration of some 10 cm was measured. 

Micaceous iron oxide, a flake-shaped a-Fc203 with a metallic gray color, is mainly mined in Carinthia (Austria). It is used in the top coat of corrosion protection coatings. Application fields are steel superstructures (stations, Eifel tower), petrochemical plants and ship building. The annual capacity worldwide is 10- 10 t/a. 

Conventional reinforced concrete bridges refer to those with superstructures made of reinforced concrete. In general, prestressed concrete and steel bridges will have... 

Roller application Fast and easy to master High paint yield Uniform film thicknesses only suitable for smooth surfaces worse wetting of the substrate labor-intensive steel superstructures handicrafts do-it-yourself... 

Steels are the most common materials used for oil and gas applications. The most common use of steel is for structural applications, such as support structures, piles, superstructures, underground pipelines, storage tanks, pipings, and so forth. The main requirements of structural steel are as follows ... 

Placing a protuberance such as concrete bock or steel bracket at superstructure or substructure as shown in Fig. 7(b). 

A shallow foundation is foundation built near or at ground (soil) or rock surface. This foundation is placed on firm soil near the ground and beneath the lowest part of the superstructure. Examples of these foundations are pad footing and spread footing. Deep foundation on the other hand is foundation that transmits structural loads to deeper soils or rock layers that are far from the surface. This foundation is constructed on a soil that is not firm, and transmits the load of the structure considerably below the ground of the lowest part of the superstructure. Deep foundations can be divided into two categories, that is pile foundation and drilled pier foundation or caisson. Piles are normally columns made of concrete, wood, plastic or steel that are driven into the ground. Drilled pier or caisson on the other hand is a special pile made of cast in situ concrete inside a bored or drilled hole. 

Hoods used for work with radioactive sources or materials should be designed so that they can be decontaminated completely on a regular basis. A usual feature is a one-piece, stainless steel, welded hner with smooth, curved comers, which can be cleaned easily and completely. The superstructure of radioisotope hoods is usually made stronger than that of a conventional hood in order to support lead bricks and other shielding that may be required in the hood. Special treatment of the exhaust from radioisotope hoods may be required by government agencies to prevent the release of radioactive mataial into the environment. This usually involves the use of high-efficiency particulate air (HEPA) filters (see section 8.C.8.4). 

Adhesives may be used to bond precast concrete slab units directly to the flanges of longitudinal steel girders in bridge construction. Such a technique has been successfully employed in Germany(12). On one bridge described in Chapter 7, epoxy resins were used in a variety of forms and locations on the superstructure. The successful use of resins in this example suggests considerable scope for other applications. 

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