The design of steel chimney can be done as two types: Self-supporting steel chimneys Guyed steel chimneys. Self-supporting steel chimneys: When the lateral forces (wind or seismic forces) are transmitted to the foundation by the cantilever action of the chimney, then the chimney is known as self-supporting chimney. The self-supporting chimney together with the(…)
Steel Design
BRACED FRAME & MOMENT RESISTING CONNECTION
Braced frames and moment resisting frames are used in building and other structures subjected to lateral loads to provide stability or collapse will occur. This is particularly obvious for very tall structures where the lateral forces are the most important design consideration. There are many methods available for stabilizing structures as shown below. Moment-Resisting Connections:(…)
STEEL CONCRETE COMPOSITE BEAMS
Steel concrete composite beams consists of a steel beam over which a reinforced concrete slab is cast with shear connectors. In conventional composite construction, concrete slabs are simply rested over steel beams and supported by them. These two components act independently under the action of loads, because there are no connection between the concrete slabs(…)
TENSION MEMBERS-CROSS-SECTION & BEHAVIOUR
Tension members are considered to be carrying only axial force. Tension members are subjected to uniform stress because their entire cross-section is used for carrying axial forces. Ties, suspenders of cable stayed and suspension bridges, building suspenders hung from central core, sag rods of roof purlins, members of trusses etc. are examples of tension members.(…)
LIMIT STATES OF STEEL DESIGN
For a structural designer, it is most important to ensure that the structures and facilities designed by him are: Fit for their purpose Safe Economical and durable. Thus, safety is most important responsibility of a structural designer. But it is more difficult to say how safe a design is, because of natural variation of material(…)
METHODS OF STEEL STRUCTURE DESIGN
Joints in structures have been assumed to behave as either pinned or rigid to render design calculations manageable. In ‘simple design’ the joints are idealised as perfect pins. ‘Continuous design’ assumes that joints are rigid and that no relative rotation of connected members occurs whatever the applied moment. The vast majority of designs carried out(…)
Pre – Engineered Metal Buildings – Latest Trends
Pre-Engineered Steel Buildings use a combination of built-up sections, hot rolled sections and cold formed elements which provide the basic steel frame work with a choice of single skin sheeting with added insulation or insulated sandwich panels for roofing and wall cladding. The concept is designed to provide a complete building envelope system which is(…)
COMPOSITE STEEL JOISTS
Composite Steel Joists Composite steel construction has been recognized for a number of years as one of the most economical systems for constructing building floors. Three options have evolved over the years to meet the requirements for building height limitations and the need to run complex heating, ventilating, electrical, and communication systems: (1) Composite wide(…)