Lightweight floor slabs are an excellent choice for creating floors that are both sturdy and effective. Because they provide an excellent balance between robustness and usability, they are widely used in a variety of construction projects. These slabs are made to lessen the structure’s overall weight while still offering the stability and support that are required.
The adaptability of lightweight floor slabs is one of their main advantages. They are designed to meet various building needs and are available in a variety of sizes and types. Whether you’re working on a commercial or residential building, there’s probably a lightweight slab that works for you. You can choose the ideal slab for your unique needs by being aware of the sizes and features of these slabs.
We’ll examine the various kinds of lightweight floor slabs, their dimensions, and special characteristics in this post. We’ll look at how they stack up against conventional slabs and go over their benefits for installation and functionality. By the time you’re done, you’ll understand why lightweight floor slabs might be the best option for your upcoming building project.
- Information about sizes
- About hollow and multi-hollow
- Important point
- What are the requirements
- About ribbed varieties
- About the marking standard
- About prefabricated plates according to the series PC and PB
- Video on the topic
- INTERFLOOR FLOORING WITH SLAB / CONCRETE INTERFLOOR FLOOR SLABS / LIGHTWEIGHT FLOOR SLABS
- Lightweight hollow-core floor slabs 7PK (PNO). Buy from the manufacturer.
- FLOOR SLABS. TYPES AND METHODS OF MANUFACTURING SLABS FLOORS
- Differences between lightweight floor slabs PNO and 1.6 PB. Sale 8(495)999-18-66
Information about sizes
Various sizes of lightweight floor slabs can be produced based on the needs of the customer and the capabilities of the manufacturer.
- Thickness (usually constant) – 22 centimeters
- Length – can vary in the range of 2.4-12 meters
- Width – from 1 to 2.6 meters
The slab types that rest on four sides (PKK) are an exception, and their measurements can range from three by four to three by seven meters. Except for PG, where the holes are pear-shaped, all slab types have round holes. Options bearing the PKK marking permit beveled ends.
About hollow and multi-hollow
Different floor slabs are actively used in both industrial, multi-story and private low-rise construction. Due to their many benefits, hollow and hollow-core (PNO) slabs are currently the most popular products on the market. Smaller PNO floor slabs are used in single-story construction, while larger ones are used in multi-story construction.
The lightest floors from the corresponding concrete grades are selected for structures with low weights. Typically, voids are spherical or pear-shaped.
- Correct geometry – the slabs must be perfectly flat, correspond to the dimensions: if high-quality products are selected, then the subfloor of the floor will not need to be additionally leveled
- Accurate panel sizes – to facilitate the design and construction process
- Resistance to moisture, fire, the spread of microorganisms (fungi, mold)
- Increased characteristics of heat and sound insulation due to the presence of air in the voids, which insulates and dampens sounds
- Weight – 700-4200 kilograms (depending on the dimensions of the slab)
- Dimensions – 2.4-12 meters in length, 1-3 in width.6 meters (for 1 PPK-3 PPK the width can be 4.8-7.2 meters)
- Plate thickness – 22 centimeters
- The maximum load that the slab can withstand is up to 850 kg / m2 (calculated individually, depends on the grade of concrete, reinforcement, dimensions, etc.D.)
A concrete solution made using cement from the M300 and M400 brands is used in the manufacturing process. These grades enable the lightweight floor slab to be both flexible and long-lasting: M400 offers resistance to sudden loads, while M300 ensures that it won’t deform when deflected.
A3–A4 stainless steel rods are inserted into the plate to strengthen and increase the bearing capacity of the ceilings. The material is immune to temperature changes and corrosion. The method of applying tension reinforcement is as follows: steel rods are stretched into a form, reinforcement mesh is placed inside, mortar is poured in, and any extra reinforcement is cut off.
Lightweight floor slabs can sustain the highest static and dynamic pressure without deflecting or sagging because of the tension in the slabs. To ensure that the product can support both its own weight and the weight of the upper walls, double reinforcement is also installed at the ends that rest against the walls. These slabs are suitable for the construction of industrial high-rise buildings.
Important point
It’s important to thoroughly consider all the details before selecting slabs for flooring. The primary prerequisites for a successful panel installation are ambient temperature, low humidity, and the lack of chemical activity in the immediate area.
The mounting loop locations must be anticipated in advance. There are unique gripping structures like these, which make construction easier. You can speak with the manufacturer one-on-one about where the loops should be located.
It is critical to compute all loads when selecting a slab; these loads can be distributed (as in the case of a suspended ceiling) or pointed (as in the case of various suspended elements). It is also important to keep in mind complex loads, such as the pressure exerted by decorative items and furniture. A bathtub, for instance, is an example of a complex load.When filled with water, it presses pointwise against the floor with a distributed load.
- When installing lightweight floor slabs, it is imperative to comply with all calculated parameters of support on the walls according to the drawing. If the area is larger, the thermal conductivity will increase, if less, the wall may deform.
- When assembling overlapping structures, take into account the minimum allowed support depth, depending on the structure of the building materials. Thus, for foam concrete and aerated concrete, the depth is 15 centimeters, for brick – 9 centimeters, for steel frames – up to 7.5 centimeters.
- The deepening when putting the plates into the walls should not be more than 16 centimeters for brick or light blocks, 12 centimeters for concrete and reinforced concrete structures.
What are the requirements
PNO slabs’ dimensions and features indicate variations. But in order to ensure the future building’s dependability and quality, all products must adhere to a set of standards.
- Exact compliance with all GOST standards
- Strict adherence to the sizes and dimensions specified in the documentation, no chips or visible damage
- Strength limit and fire resistance, optimal for a slab of a particular type, corresponding to the calculations performed in the project
- Reinforcement of the slab with reinforcement – the required class, in the volumes specified by GOST
- For ribbed slabs – the distance between adjacent ribs should be equal to 150 centimeters
- Optimal level of rigidity, resistance to various types of deformations
- Weight – affects the ease of use, the total weight of the entire building
- Cost – must be justified and suitable for the developer
- Heat, sound, waterproofing-according to established standards
About ribbed varieties
The size range of lightweight floor slabs (PNO) directly influences their characteristics. Excellent performance qualities of ribbed slabs include their long service life, strength, dependability, and relatively low weight.
A solid monolithic reinforced plane that ensures maximum strength and longitudinal elements serving as stiffeners are the two main parts of ribbed panels. Concrete, both light and heavy, is used to make products. Every attribute is visible on the label.
To boost strength, more transverse ribs can be added (in one or both directions).
These slabs are used most frequently in the construction of attics and industrial buildings because they are unyielding even under the highest loads. However, they do have one disadvantage: the panel ceiling.
Plates with ribs can be made with or without preliminary voltage. Only when building multi-story structures and as long as there is a 6-meter gap between the supporting structures can unfixed slabs be utilized.
About the marking standard
The marking, which is applied to the completed slabs, contains details about the dimensions, kind, reinforcement, load, etc. D. represented by digits and letters.
- A number for indicating the size of the internal hole (according to GOST 9561-91): 1 PC indicates voids with a diameter of 159 millimeters, 2 PCs – with a diameter of 140 millimeters (may not be indicated for 1 PC, in the documents they simply write PC). The letters PB denote 20-centimeter thick formwork-free slabs.
- Type – designated by 2-3 letters, provides information about the shape of the voids, the production method and the number of supported sides.
- The following is the size – first the length (the side that does not based on the supporting structure), then the width in decimeters. The thickness is not indicated, since it depends on the type of plate.
- Must necessarily indicate the bearing capacity of the product.
- Type of reinforcement – falls for uninhabited frames.
- The designation of the brand of the solution is not indicated for the heavy if C is dense silicate, if L is light.
- The remaining properties, design features: resistance to seismic activity, aggressive gases, embedded elements, etc.D.
About prefabricated plates according to the series PC and PB
Inter-story floors are commonly constructed using PC plates, but PB plates are gradually taking their place in the market. The primary distinction and benefit of PB plates is their non-pointed production technology, which allows panels to be produced in nearly any length (the product is cut into the appropriate pieces after being removed from the conveyor with a tape).
The plates have a standard thickness of 22 centimeters. The following factors are also considered when determining the thickness of floors: the ceiling itself, the floor covering layer, the insulation layer (if any), and the thickness of the concrete screed up to five centimeters. Since all of this has an impact on the slab’s installation features, it is calculated beforehand.
Every slab is utilized to produce a trustworthy and long-lasting floor. Slabs are used in individual low-rise construction for a variety of purposes, such as floor laying, attic and floor separation, outbuilding pitched roof construction, enclosing structures, and platform construction.
Even in situations where single-layer flooring is installed, the standard load-bearing capacity of slabs with the weight of people and furniture is 150 kg/m2. Additionally, the sound and heat insulation qualities of these materials ensure dependable protection from cold and noise.
Long slabs are useful for the installation of commercial and public buildings because they are adaptable and can be used anywhere (up to 9 meters for PC, 12 for 4-6 PC, PG). When selecting the size, remember how important it is to adhere to the recommended spacing between supports (7–15 centimeters, depending on the type of wall).
PC reinforcement is carried out with steel grade A4-A5, as well as transverse wire mesh of small diameter. The PB series assumes only longitudinal reinforcement from strong steel rods class K-7. Due to the absence of a transverse frame, the slabs can be cut at any angle, using them in the construction of buildings of unusual configurations.
Since every slab has a polished surface, finishing work beforehand is essentially unnecessary. Cost-wise, PB series slabs are typically less expensive than PK series slabs. A floor that is one meter wide is typically more expensive to use than one that is 1.2–1.5 meters wide when expressed in squares of the cost of a square meter.
Aspect | Description |
---|---|
Size | Lightweight floor slabs come in various sizes, typically ranging from 4 to 8 feet wide and 8 to 20 feet long, but custom sizes can be made. |
Weight | These slabs are lighter than standard concrete slabs due to the use of lightweight aggregates, making them easier to handle and install. |
Thickness | The thickness generally varies from 4 to 6 inches, depending on the load requirements and design. |
Types | Common types include hollow core slabs, waffle slabs, and composite slabs. Each type offers different advantages based on load-bearing needs and construction methods. |
Insulation | Lightweight slabs often provide better thermal and acoustic insulation compared to standard concrete slabs. |
Applications | These slabs are ideal for residential buildings, commercial properties, and in areas where reducing overall weight is crucial. |
Making the best choice for your project requires an understanding of the sizes, types, and characteristics of lightweight floor slabs. These slabs are perfect for a variety of construction needs because they provide an excellent balance between strength and weight. Lightweight slabs can give you the durability you need without adding bulk to any kind of structure, be it residential, commercial, or otherwise.
Lightweight floor slabs’ ease of handling and installation is one of their main benefits. They can be moved and placed more easily due to their decreased weight, which can save time and money on labor. Furthermore, their characteristics may improve overall structural efficiency, reducing the load on supporting components and possibly reducing building costs.
Depending on your unique needs, several lightweight floor slab types—such as hollow core and expanded polystyrene (EPS) core slabs—offer different advantages. While EPS core slabs offer better thermal insulation and acoustic performance, hollow core slabs are renowned for their exceptional span capabilities and load-bearing strength. Selecting the ideal type for your project can be made easier if you are aware of these options.
In conclusion, lightweight floor slabs are a flexible and useful option for a variety of building projects. You can improve your building’s efficiency and functionality by making an informed choice by taking into account their various types, sizes, and characteristics. You can benefit from lighter weight, better installation, and possibly lower overall costs by making the appropriate decision.
Because lightweight floor slabs provide better performance and less weight while preserving structural integrity, they present an effective and useful option for contemporary building. The different sizes, traits, and varieties of lightweight floor slabs will be discussed in this article, along with their advantages—such as simpler handling, quicker installation, and improved acoustic and thermal insulation. Knowing these factors can help you, as a homeowner, builder, or architect, select the best floor slab for your project, guaranteeing longevity and economy.