Pre Engineered Steel Structure
A pre-engineered steel structure, also known as a pre-engineered metal building (PEMB) or pre-engineered building (PEB), is a steel building system that's designed and manufactured in a factory and then assembled on site.
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Factory Area
Was established in 2002, is a professional steel structural manufacturer in China, we have 265 production worker, all are skilled and well training employee.
Main Products
Our main products include steel warehouse,steel structure workshop, steel chicken house, poultry house and other steel product.
Production Capacity
Production capacity around 200 000 ton capacity per year, which is able to assemble 300 steel structure building per year.
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What is Pre Engineered Steel Structure?
A pre-engineered steel structure, also known as a pre-engineered metal building (PEMB) or pre-engineered building (PEB), is a steel building system that's designed and manufactured in a factory and then assembled on site.
Components Of Pre-Engineered Steel Buildings
Primary Components consist of mainframes, columns, and rafters.
Mainframes – The mainframes, as the name implies, are the rigid steel frames of pre-engineered buildings. They consist of tapered columns and rafters connected by welds, bolts, or rivets.
Columns – Columns are one of the most integral parts of all structures, including pre-engineered buildings. These members transfer the vertical loads, both live and dead, from the structures to the foundation. While there are different available steel sections for columns, pre-engineered buildings usually use the I-sections.
Rafters – Rafters are a series of sloped beams used for the construction of roofs. They extend from the ridge to the wall plate, and they provide a base to support roof coverings, roof decks, and other structural members at the top of pre-engineered buildings.
Purlins, girts, eave struts, and bracings make up the secondary components of pre-engineered buildings.
Purlins – Purlins are horizontal members that help make pre-engineered buildings more rigid by providing additional support to the roofing system. The usual type of structural steel used for purlins is the Z-section.
Girts – Girts are another secondary component, and they provide lateral support to the walls. The usual steel sections used for these members are the Z- and C-sections.
Eave Struts – Eave struts support the gutters of pre-engineered buildings and act as a junction of the wall cladding and the roof. They are cold-formed C-sections ideal for corners to support sheetings.
Bracings – Bracings are critical structural members as they contribute to the stability of pre-engineered buildings. They provide support against longitudinal forces brought about by wind and earthquake loads.
Cladding or sheeting is the component used to cover pre-engineered buildings. Aside from protection from wind, rain, and other natural factors, they also have other functions, including noise control and thermal insulation. Depending on their design, cladding or sheeting can also provide aesthetics to pre-engineered buildings.
Steel claddings or sheetings are eco-friendly since they can come from recycled metals. Another advantage is their durability despite being lightweight.
Accessories are the non-structural members of pre-engineered buildings. They are doors, skylights, louvers, windows, roof curbs & jacks, gutters & downspouts, liners, vents, and more. These parts may not be load-bearing, but they are essential to complete steel structures.
Type Of Pre-Engineered Steel Buildings
Pre-engineered steel buildings are divided into many different types. However, the main types commonly found in designs in the Vietnamese market include 4 types:
Pre-engineered civil building: The type designed for people's living. Built for small households to live in. With a quick, easy, low-cost design. So now pre-engineered civil steel buildings are very popular with households. The design of a civil pre-engineered building needs to be fully structured to ensure a solid and comfortable living area.
Pre-engineered industrial buildings: Built with simple architecture. Create a large space with a simple cover texture. Designing pre-engineered industrial buildings simply mean designing for warehouses, workshops for industrial parks, etc.
Pre-engineered commercial buildings: Similar to pre-engineered industrial buildings, Pre-engineered commercial buildings have a smaller scale to serve the needs of trading and business locations, etc.
Pre-engineered military buildings: Designed with a simple structure, serving military needs, such as a training place, a place to store military items, etc.
Advantages Of Pre Engineered Steel Structure Buildings
Reduced Construction Time
Factories fabricate most of the structural parts of pre-engineered steel buildings. There are high-speed fabrication processes that only take a few or more weeks after the approval of designs, accelerating the progress of construction projects. Although it differs depending on many factors, pre-engineered buildings reduce construction time by 50%.
Low Costs
There are significant savings in design, manufacturing, and construction costs with shorter construction time and systems. One specific example is the reduced labor costs due to the faster construction period. Additionally, secondary components and cladding of pre-engineered buildings nest together, allowing for more savings in transportation costs.
Easy Expansion
Compared to conventional structural steel construction methods, the design processes for pre-engineered steel buildings allow for easier expansion, whether horizontally or vertically. Pre-engineered buildings can be pre-designed for future developments, such as expansion.
Controlled Quality
Since the structural members of pre-engineered buildings are fabricated at factories, they have better quality features. The better quality is mainly due to the reason that they are under controlled conditions. Unlike in conventional methods wherein members are exposed to different natural factors like rain, weakening them.
Low Maintenance
Usually, the components of pre-engineered steel buildings are treated with high-quality coating systems suitable for ambient on-site conditions, resulting in easier maintenance and more durability.
● Maintenance of the Roof
Maintenance of the Overhead Cranes
Let's first look into the safety factors that should be followed while working on the roof of a PEB.
Maximum safety practices should be practised during maintenance at the roof. Some of these are.
Use of PPE
PPE or Personal Protective Equipment is shielding clothes, goggles, helmets or other types of equipment designed to safeguard the wearer's body from infection or injury. These include injuries caused by different types of physical, chemical, electrical, heat, or other factors.
PPE or Personal Protective Equipment should be used by everyone working on the site at all times while working at a height, like on the roof of a PEB.
Work with competent labours
Working on the roof requires special skills and alertness. Extreme caution should be practised while working on the roof.
Only competent and experienced workers should be used for regular maintenance works, especially on the roof of a PEB.
Reach of the Access Ladders
Access ladders are used to reach at various heights during the assembling or maintenance of a pre-engineered steel building. The height of these access ladders should reach at least one meter above the step-off point. This is to make sure that the worker using the access ladder can reach his objective securely and has no chance of falling off.
Access ladders should be secured to the building
Access ladders should have a rigid base tied completely with the PEB. This is to confirm that at any point of time when the worker is climbing the roof, he or the access ladder would not fall off. Also, the workers or staff should use a harness while climbing to the roof with the help of the access ladder.
Access to the Skylights on a PEB
Skylights are a part of the accessories installed in a pre-engineered steel building for aesthetic values and for allowing natural light to enter the building. The base frame of these skylights is not sturdy enough to bear direct weight. So workers should not step on skylights or any such relatively fragile accessory while doing the maintenance in the pre-engineered steel building.
Never walk on the roof
To avoid leakage in the roof, loosening of the screws and bending of the sheets, staff in charge of maintenance work should take care of some points like
While walking on the roof, you should step in the valleys of the panel and not on the ribs.
Whenever possible, you should walk directly on the screw line and the purlin line.
You should protect the areas of the roof subject to frequent access by building temporary or permanent walkways for the maintenance staff or the residents of the PEB to walk in.
Maintenance of the Overhead Cranes in a PEB
In addition to following the above-mentioned points, some additional safety protocols should be followed while doing the maintenance work of the Overhead Cranes which are inside a PEB.
Runways for Crane
Cranes are used to lift and assemble parts in a PEB. These cranes can be of various height and weight depending upon the height or load to be put in the PEB. So runways should be made for crane access so that locomotion of the crane can be smooth and would not cause damage to the floor of the PEB.
Immobilize the crane before the commencement of work
After completing a day's work and before the commencement of work on-site each day, you should make sure that the crane is powered off completely and has no sort of movement or electronic glitch, like a loose switch or electrocuting surface.
You should immobilize the crane perfectly before the commencement of work each day to ensure that no accidents are caused on the site of the PEB construction.
7 feet of Clear Height
The clear height of a PEB is the distance between the finished floor level to the foot of the knee-joint. Height clearance of the runway to shed of the PEB should be at least 7 feet for a person to walk and work with ease.
Always use Safety Belts
Many fatal accidents happen regularly due to falls from heights at construction sites. At Adi Durga Steel we make sure to use safety belts even while working on the runway to protect our workers from falling from crane height.
The Ultimate Guide To Maintaining Pre-Engineered Steel Buildings
Conduct Regular Inspections
Regular inspections are a simple yet instrumental step in the upkeep of pre-engineered steel buildings. These scheduled assessments enable you to detect and address maintenance issues in a timely manner, preventing them from evolving into costly and extensive repairs.
Prevent Corrosion
Steel is known to be robust and durable but it can still succumb to rust when exposed to moisture and other environmental elements. Corrosion can compromise the structural strength of your structure or building, leading to potential safety hazards, plus it can also reduce its lifespan. Moreover, rust spots can diminish the aesthetic appeal, potentially affecting the property's value.
You should thus take proactive measures to prevent corrosion to protect your pre-engineered steel building. For example, you can use rust-resistant coatings and ensure there is always proper drainage of rainwater and surface water.
Remember, you will not only be enhancing the building's lifespan but also causing long-term cost savings by averting extensive repairs or replacements that might arise from unchecked corrosion.
Do Regular Roof Maintenance
The roof acts as the primary barrier against environmental elements, safeguarding the interior from water, debris, and potential damage.
Neglected roofs in your steel buildings can develop leaks, leading to water infiltration that can compromise insulation, foster mould growth, and even damage stored goods or equipment inside the building.
Regularly inspecting and maintaining the roof ensures that potential issues like cracks, sealant wear, or pooling water are addressed promptly.
Inspect Fasteners
Regularly inspecting fasteners is essential for maintaining the structural integrity of your pre-engineered buildings. Fasteners, such as bolts, screws, and rivets, hold various components of the building together, ensuring its stability and strength.
Often, due to factors like thermal expansion, contraction, and environmental stresses, these fasteners can loosen or corrode. If not addressed, compromised fasteners can lead to misalignment of building components, reduced load-bearing capacity, and even structural failures.
Again, be sure to conduct periodic inspections and promptly repair any issues with the fasteners using top-grade materials to ensure the integrity of your engineered commercial buildings. The result will be a secure building, robust against external pressures.
Gutter Care
Gutter care is a vital, yet often overlooked, aspect of maintaining pre-engineered buildings. Gutters play a crucial role in directing rainwater away from the building, ensuring that water doesn't accumulate around the foundation or seep into areas it shouldn't.
Blocked or damaged gutters can lead to water pooling, which can cause foundational erosion, landscape damage, and even lead to water infiltration into the building. Over time, unchecked water accumulation can compromise the building's structural integrity and potentially result in costly repairs.
Regularly inspecting and repairing damaged gutters ensures proper function, keeping the building dry and damage-free.
Regular Cleaning
Dirt, grime, and pollutants can accumulate on the building's surface, leading to potential staining, discoloration, and even corrosion. Such accumulation can also trap moisture against the building's facade, heightening the risk of rust and degradation, particularly in steel components.
A routine cleaning regimen will remove the contaminants, ensuring that the building retains its visual appeal and structural health.
Your cleaning sessions can also offer an opportunity for close inspection of the building's surface, facilitating early detection of potential issues.
Seek Professional Help
While routine checks and basic upkeep can be managed independently, professionals possess specialised knowledge, experience, and tools to identify subtle issues that may go unnoticed to the untrained eye.
Our Factory
Qingdao Zhenyu Steel Structure Co.,Ltd was established in 2002,is a professional steel structural manufacturer in China, we have 265 production worker, all are skilled and well training employee, production capacity around 200 000 ton capacity per year, which is able to assemble 300 steel structure building per year.
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