Erection, Steel fabrication and Hybrid construction

This blog is about steel erection, Fabrication and Hybrid construction  Erection:                                                                    The erection of structural steelwork is about assembling of steel components into a frame on site. The process are lifting and placing components in position and connecting them together. Mostly connections are done through bolting and site welding is used.                                                 The main tasks in steel erection:

§  Checking whether the foundations are suitable and safe for erection. Lifting and placing components into position, generally using cranes but sometimes by jacking                                                                                    Erection techniques:                                          *Mobile cranes                                                                            *Tower cranes                                                            Fabrication:                                                      Structural steel is usually fabricated to create structures like beams, trusses, hollow sections, angles and plates. The steel members are fabricated before assembling them together. All parts of these members are fitted-up temporarily with rivets, bolts, or welds                                                            Types of Fabrication Systems:

·                  Cutting is the common process in the fabrication process.

·     Machining In this process it helps to remove the excess material to get the final desired shape.

·         Punching

·         Shearing

·         Folding

·         Stamping                                                                                          Hybrid construction:                                                             it is generally taken to be the combination of situ concrete with precast concrete units like situ columns with precast floor slabs. An alternate form of hybrid construction is the use of permanent formwork, made from a variety of materials.                                                                     The benefits of Hybrid construction                    *Speed of construction                                                            *Reduced on site labour requirements                                    *Better quality due to offsite manufacture                               *easy to works and deliveries to site

BY kishore


Comments

Post a Comment

Popular posts from this blog

Steel Erection, Fabrication and Hybrid construction -Blog 16

Image
This blog is about how the steel sections are transported to the site, the issues involved with transportation, erection and fabrication along with the onsite constrains. TRANSPORTATION: The steel sections have to transported from the manufacturing site to the fabrication site and this becomes a tough task due to their size. Often large pieces cannot be transported in a single part, they are split or divided and shipped as two separate pieces or even as one piece to avoid damage or scratches. Temporary connections are made on the pieces to avoid damage and to keep the parts in place during transportation.     These parts are not transported in normal vehicles but require long trail vehicles to fit their length and size which again becomes a difficult task to turn around the corners of the road and at junctions     FABRICATION & ON SITE CONSTRAINS: Fabrication of steel on sites which are along the main road or at the corner site is very hectic as there is very...
Read more

BLOG-16 FABRICATION, ERECTION AND HYBRID STRUCTURES

Image
  FABRICATION: The process of  steel fabrication  involves grinding, welding, cutting, bending, drilling, punching, burning or melting and other general crafting methods using various high-quality tools and CNC equipment. ERECTION LIFTING, POSITIONING AND PLACING OF STEEL MEMBERS IN A STRUCTURE  Once the member(s) are lifted and placed in the required place, with the help of temporary supports and equipment, they are fastened and fixed, depending on the nature of connection.  Erections may be achieved by two techniques such as MEWP(Mobile Elevating Work Platforms) by Mobile crane and Tower cranes. HYBRID STRUCTURES Hybrid structures are structures built with composite materials a combination of different materials with steel. A common  hybrid system  consists of hollow core slabs together with steel or cast-in-situ concrete frames                       EXAMPLE STEEL WITH TIMBER     I...
Read more

STEEL , ALLOYS AND THEIR COMPARISON

Image
BLOG- 8                                     STEEL , ALLOYS AND THEIR COMPARISON                                                               STEEL AND ALLOYS                                               An alloy is a blend consisting of metal and other elements. Alloys are generally made for achieving properties like greater strength or resistance to corrosion. Steel is an alloy of iron. It mainly consists of iron with some small amounts of carbon. Definition ALLOY :      A homogeneous mixture of a metal with other types of elements                       ...
Read more