Pre Engineered Building is a metal building designed and fabricated in the factory premises; all components are shipped to site and are assembled and erected at site with nut bolts/ anchor bolts.
Pre Engineered Buildings are Steel Structures built over a structural concept of:
Primary Framing System
Secondary Framing System
Primary framing consists of all structural elements which transfer load to the foundation and comprise of:
End Wall Frames
Rigid Frames are structural skeletal member bearing the load of entire building. They are I -section members (web and flange) interconnected with connection bolts. Vertical structure members are called columns and Horizontal members which are connected with columns are called rafters. These steel structures are rigid and lightweight and manufactured in different sizes and forms. This is also called as primary framing system. The primary framing system is basic requirement of all Pre-Engineered Buildings. According to its width, the primary framing system is the same on both sides of the central ridge line. The primary framing system can be more complex with asymmetrical features along with some complex arrangements also. These framing systems are manufactured as per client requirement.
These primary members are available in standard ready-made shapes or as channels also for the complicated primary framing system. Other members of a primary framing system are End Wall Frames, Crane Brackets and Wind Bracing. In a Pre-Engineered Building, other than the primary framing system, secondary framing system, sheeting, and many add-ons can be done as per client requirement. These add-ons are crane beam, canopies, trusses, fascias, and Roof extension and mezzanine floors.
End Wall Frames are one of essential structural components of Primary framing system, an important member of Pre-Engineered Buildings. Intermediate column of End wall frame distribute the load of building equally A primary framing system is the main member of a Pre-Engineered Building. Usually one part of a primary framing system is similar to the other part on either side of the ridge line. The structural systems including the primary framing system vary in form and size in accordance with the preferences of the clients. .End wall Frames can be designed in two types, expandable rigid frame or post end beam depend on client requirement for future expansion.
Wind Bracings are cross primary supporting members that transfer the loading or seismic forces equally on columns and support all the structural units of a Pre-Engineered Building. Nowadays steel building constructions steel has replaced the heavy conventional structural materials and concrete structure. The steel buildings have become extensively popular only due to their durability, adaptability and agility. Wind bracing, an essential component of a primary framing system offers vertical strength to the building for holding up the entire pre-engineered structure. Wind bracing features intersected brackets present inside and roof walls in one or multiple inlets, which depend on the span and total weight of the building. Wind bracing, an essential element of a primary framing system, along with the other structural elements of a primary framing system, is manufactured as sturdy and light weight personalized components in accordance with the customer’s preference and purpose.
Some of the essential structural pieces required in a primary framing system are the crane brackets. The crane brackets are the usual effective members holding up the cranes beams. The crane brackets in a primary framing system carry the load of the crane joists or crane beams and are attached to the columns. The crane brackets joined to the vertical columns substitute the use of an overhead crane brackets. The crane brackets are the most affordable components for supporting the crane joists along the vertical columns. The crane brackets can also be separately used in inlets. The columns holding the crane brackets should be strong enough and the space overhead the crane bracket should lack all obstacles. Crane brackets are fixed with strong connecting and fixing bolts. The crane brackets are the pre-engineered parts of a building to be used with strong beams. Crane brackets can be installed and adjusted conveniently on columns.
Secondary framing consists of elements which support the roof & wall sheeting and transfer load to the primary framing. These includes :–
The secondary framing system in a pre-engineered building is comprised of specific components like the roof purlins, wall girts, eave sturt etc. Roof purlins are C or Z shape cold form structured components of a secondary framing system with variable depth and thickness in accordance with the customized designs. Cold form members are less ductile in nature. The roof purlins are attached to the overhead projections of the roof beams or Rafters with the help of bolts. The roof purlins are connected in a continuous fashion and spacing between purlin to purlin are based on design. The primary and secondary framing systems together with attachable sheeting form the basis of the pre-engineered buildings. This Roof purlins are cold form structure it can be Pre galvanize or Painted without galvanization.
The wall girts are cold formed Z shape members, which are of various thickness and variable depth depend upon the design. The wall girts are connected to the external extension of the columns along the walls. Clips already made along the columns join the wall girts to the outer projection of the side wall lines, the network of wall girts being joined to the clips. The wall girts are vital to the secondary framing systems, which along with the primary framing systems and the connectible sheeting form the pre-engineered structure. The role of the secondary framing system is to hold up the wall sheeting and the roof with the different components that are indispensable to a secondary framing system. The components of the secondary framing system also pass on their total load onto the primary framing components. The chief components of a secondary framing system, other than the wall girts, are the eave struts, Wall girts are also Cold form member it can be pre galvanize or Painted.
It is important to keep your Roof sheet strong and well designed. Our High rib bare galvalume sheeting is well suited for same, this High rib profiles are with 28 mm rib and of 26 gauges. These panels are fixed on Roof with SDS (Self Drilling screws).This high rib sheeting can be profiled with variable depths and sizes. This high rib profiles are best suited roofing solution for all industrial buildings, This profiles have higher capacity to shed water and have Higher strength too.
It is important to keep your Cladding strong and well designed. Low ribs are helpful for this purpose. Low ribs can also be suitable for partition wall and liner panels.Our Low rib profiles are with 15 mm rib and of 26 gauges. If you are looking for a low rib, which is easy to install, it is a low rib panel, which gives an attractive and clean finish to your building. It contains minimally visible stitching screws, which makes it more suitable to fix on wall. This panel maximizes the potential of steel frames to support the building structure.
Standing seam is where the roof panel seam is mechanically field rolled to complete the 360 degree double lock seam- creating the tightest seam available today, thus assures weather tightness and eliminates the chances for even tiny capillary leaks. This RSS-472 roof system is the most specified and most reliable standing seam roof system in the present market.
Roof panel seam is mechanically field rolled to complete the 360 degree double lock seam- creating the tightest seam available today, thus assures weather tightness and eliminates the chances for even tiny capillary leaks. This RSS-472 roof system is the most specified and most reliable standing seam roof system in the present market.
Standing seams consist of vertical metal panels comprised of two vertical seams in each panel. While these seams are crimped, the joints get sealed. It prevents the collection of water and moisture on the roof surface that stops the leakage.
The installation process of standing seam roof is easy. They can be attached with the help of clips underneath the roofs. The clips provide the space for expansion and contraction of the roof, which is a natural process during changing weather.Since standing seams use metal in its production with double locking system, you can ensure its durability for using as roofing material much more than normal Bare Galvalume.
Sliding or Roll up Door
Circular ventilators fabricated with Galvalume sheet or SS with Variable dia. These ventilators are fixed on roof top and rotate with the help of natural wind. This is an important component for air ventilation in industrial buildings.
Elongated ventilators fabricated with Galvalume sheet are fixed on roof top at the ridges. This is the most important component used for Air ventilation. It can be fixed continuous throughout the ridge of the building and also can be in fixed at definite interval. The Ridge vent allows heat and humidity to escape out from the building.
Louvers are made up of steel or aluminium and are available with variable designs. The blades of louvers are designed in such a way that it helps in air ventilation and also restricts dust and water to enter inside the building. Louvers are designed, supplied and installed as per client’s requirement.
Skylight panels are transparent plastic fiber material, fixed on the roof or wall for natural lightning. Skylights are available in variable thickness. The profile of skylight should match exactly with sheeting profile.
Insulations are fixed in the building below the roof sheet and wall cladding as per client’s requirement and supported by wire mesh / fiber mesh. Insulation helps to prevent the transmission of heat inside the building at certain level. Variant types of Insulations are available in the market which can be fixed according to building and client requirements.
Sliding or Roll up door can be operated manually or it can be motorized also. Design and size of these doors depend upon the building type and client’s requirement.
Staircase are made up of HR plate/ chequered plate. It can also be fabricated through standard ISMC sections. It can also be made and provided by SS hand rail. Staircases are used in case of Mezzanine floor building.