Prefabricated Large Span Steel Structure Frame Construction Building
| |
Panel Material parts |
(1). External Wall panel: (below is selectable) |
| 1) 50mm, 75mm or 100mm thickness EPS sandwich panel |
| 2) 50mm, 75mm or 100mm thickness Rockwool sandwich |
| panel |
| 3) 900# Corrugated Galvanized Steel sheet with different Color |
| 4) Kinds of PVC wall panel. |
| (2). Internal Wall panel: (below is selectable) |
| 1)50mm, 75mm or 100mm thickness EPS sandwich panel |
| 2) 50mm, 75mm or 100mm thickness Rockwool sandwich |
| panel |
| (3). Roofing panel: (below is selectable) |
| 1)50mm, 75mm or 100mm thickness EPS sandwich panel |
| 2)50mm, 75mm or 100mm thickness Rockwool sandwich |
| panel |
| 3)Corrugated Steel Sheet, and insulating layer if need. |
| 4)Corrugated PVC roof panel. |
| (4). Skylight: 820# Glass Fiber Reinforced Plastics (FRP) |
| 3 |
Door and Window |
(1). External Door ( Rolled up door or Sliding door ) |
| -1. Over-heat Orbit Sliding Door with double open |
| -2. Galvanized steel opening by power-operated Roller Door |
| (2). Internal Door: |
| 50mm Thickness EPS sandwich panel with aluminum alloy door frame |
| (3). Window: |
| PVC Window or aluminum alloy window frame with glass. |
| 4 |
Drainage parts |
(1).Galvanized water channel: |
| 2mm thickness galvanized steel water channel @ 3000mm or 2440mm/pcs |
| (2). Down spout: φ110 PVC Down spout with Accessorie |
| 5 |
Connecting Piece |
(1) Purline draw bar: φ12 |
| (2) Horizontal Bracing: φ24 Circular Tube |
| (3) Knee-Bracing: L Steel |
| (4) Purline Drive pipe: Φ32*2 |
| (5) Column Bracing: ?24 Circular Tube |
| 6 |
Others |
(1) Ventilating device |
| (2) Crane beam |
| (3) Canopy |
| (4) Bolt: Foundation bolt, High strengthen bolt, Normal bolts. |
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The application of PEBs:
Industrial: Factories, Workshop, Warehouses, Cold Storages, Steel Mills, Assembly Plant
Commercial: Showrooms, Supermarkets, Offices, Shopping Centers, Exhibition Halls, Restaurants, Logistic Centers, Multi-pupose Buildings
Public: Schools, Hospitals, Conference Halls, Laboratories, Museums, Stadiums
Others: Farms, Utility Shelters, Pump Stations, Aircraft Hangars, Airport Terminals
(4)Why should we choose pre-engineered steel buildings?
1. Cost Savings
Price per square meter can be 25%-30% lower than conventional steel buildings. Site erection cost is low because of faster erection times and easier erection process.
2. Quick Erection
All steel components are fabricated at the factory and linked by bolts at the site. So the erection process is fast, step by step, easy to install and requires simple equipment. 60% less construction time required compared with the tradtional R.C.C(reinforced concrete) building.
3. Flexibility
Pre-engineered steel buildings are flexible in any requirement of design, easy to expand in the future and also economically with low transportation costs.
4. Energy Efficiency
Nowadays, pre-engineered buildings are the green solution for the environment with CO2 reduction, energy efficiency, and recyclability.
(5)Components of a pre-engineered steel building:
Pre-engineered metal buildings consists of following components:
Primary Members / Main Frames
Secondary Members / Cold Formed Members
Roof & Wall Panels
Accessories, Buyouts, Crane System, Mezzanine System, Insulation, etc.
Sandwich Panels
PRIMARY MEMBERS / MAIN FRAMES
Primary members are the main load carrying and support members of a pre-engineered building. The main frame members include columns, rafters and other supporting members. The shape and size of these members vary based on the application and requirements.
SECONDARY MEMBERS / COLD FORMED MEMBERS
Secondary structural framing refers to purlins, girts, eave struts, wind bracing, flange bracing, base angles, clips and other miscellaneous structural parts.
Purlins, girts and eave struts are cold formed steel members which have a minimum yield strength of 345 MPa (50,000 psi) and will conform to the physical specifications of GB/ISO/CE or equivalent.
ROOF & WALL SHEETS/PANELS
Standard steel panels are 0.3,0.4 0.5 mm or 0.6 mm thick and have a minimum yield strength of 345 MPa. Steel panels are hot dipped and galvanized with zinc or zinc-aluminium coating. The base material is pretreated, before applying a corrosion resistant primer and top coat. The combined thickness of the painted film is 25 microns on the front side and 12 microns on the reverse side.
OTHER BUILDING ACCESSORIES
Other building accessories include anchor bolts, fasteners(bolts, nuts, turnbuckle, expansion bolts), gutters, downspouts,doors, windows,ventilators,skylight panels,louvers and all other building-related materials.
(6)Manufacturing programm and method statement on the steel structure:
The purpose of method statement is to describe the guidelines and methodology followed by our company during the fabrication, blasting, painting and supply of pre-engineered structure for any of steel building project.
A:Material receiving procedure:
Verify the receiving documents and quantity of the received material by stores.
Submit the load for QC inspection by stores.
As a first inspection QC shall perform Visual inspection to confirm the surface condition and for any damages including the condition of packing and wrapping.
QC shall perform the dimensional inspection if the material found accepted in visual inspection and the material will be returned to supplier if it is rejected.
In the dimensional inspection, QC shall check the all over dimensions such as length, width, depth, thickness etc.
Once the material is accepted in dimensional inspection, the supporting documents like MTC will be verified by QC to ensure that the heat number in the material is matching with the heat number in the received material.
QC shall prepare the Incoming Material Inspection Report as per the inspections carried out above.
B:Preparation of material
Design and Development department will make the drawings of the structural of project. As per the drawings, production department will prepare the items. The preparation of items is divided into two.
PREPARATION OF PLATES
The drawings shall be transferred to the any storage device using the expert software.
These drawings shall be copied into the plate processing machine.
According to the drawings, the preparation of the items shall be carried out.
The automated machine will sense the length of the plate and carry out plate processing according to the fed NC files in expert software. Punching of part mark on the plate will do first.
Drilling of the plates will done as per the NC files in the machine.
Plasma cutting of the plates will be done finally.
PREPARATION OF BEAMS/TUBES etc.
The fabrication drawings shall be prepared by design department and will be fed into the automated cutting and drilling machine.
Next the automated machine will do drilling where ever required as mentioned in the drawings.
After completing the cutting and drilling process the job shall be transferred from drilling machine to fit-up section.
C:Fit-up
The fabrication drawings shall be issued by the production engineer to the production supervisor for execution priority wise
These drawings shall be given to the fabricators for fit-up of job.
The prepared beams and other connection detail items shall be collected by the fabricators for fit-up of the job.
The other items such as end plates, gusset plates, stiffeners, purlin cleats, stay angle cleats etc. shall be fixed in the appropriate places which are mentioned in the fabrication drawing by tack welding.
Once the fit-up of the job shall complete, the production dept. will offer to QC dept. for inspection.
D:Welding&grinding
PROCEDURE-SUBMERGED ARC WELDING
The production supervisor shall plan the jobs to be welded.
Only the items that are fitted and accepted by QC shall be taken for welding.
Clean the location where the welding has to be done free of dust, oil, grease etc.
Set the wire feed and voltage for welding.
The fillet size shall not exceed more than the smaller thickness of the part unless otherwise specified in the drawing.
The fillet size parameters will be maintained according to the chart displayed in the welding area which is prepared based on GB50661-2011 standard
After welding, remove the spatters and slag completely.
Grind off the burrs, sharp edges and excessive reinforcements.
Offer to QC for inspection.
PROCEDURE-MIG WELDING
The production supervisor shall plan the jobs to be welded.
Only the items that are fitted and accepted by QC shall be taken for welding.
Clean the location where the welding has to be done free of dust, oil, grease etc.
Set the wire feed and voltage for welding.
The fillet size shall not exceed more than the smaller thickness of the part unless otherwise specified in the drawing.
The fillet size parameters will be maintained according to the chart displayed in the welding area which is prepared based on GB50661-2011 standard
After welding, remove the spatters and slag completely.
Grind off the burrs, sharp edges and excessive reinforcements.
Offer to QC for inspection.
Please contact me if your have any questions. Welcome send to me your enquiry as below blank:
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