The hollow core slab is manufactured in a standard 4 width and 8, 12, and 12. Adobe acrobat reader is free and can be downloaded here. It also demonstrates the long spans achievable with hollow core slabs, perfect for an open plan office area. Indicate plank locations, unit identification marks, connection details, edge. However, a common detail is for the slabs to share an intermediate wall. Hollowcore was originally conceived and developed as south africas alternative to insitu cast concrete floor panels for multistorey buildings some 25 years ago. Hollow core concrete concrete acoustic noise barriers. Also enclosed are sample specifications and a set of typical general notes. They are manufactured using high tensile strength prestressed strands.
Each slab is cut to length and ripped to reduced widths to meet your specific building or application needs. Details hollowcoredetails hollowcore just click below to download a pdf or dwg detail. Hollowcore units derive their name from the circular voids or cores which run throughout the slab. What types of bearing systems are used with a hollow core system. What types of bearing systems are used with a hollowcore system. Hollowcore can be used either as a solid floor or spaced to provide an even more economical flooring solution. All hollow core planks can be ribbed to fit your exact project requirements.
Concrete slab types construction, cost, and applications. Zeroslump, highstrength concrete with a 28day strength in excess of 8,000 psi and. Hollowcore is an extruded, prestressed concrete slab with continuous voids to reduce weight and cost. The flexural behavior of this type of slabs have not been investigated in detail in the past.
To hoist short slabs up to 3 m length, only one gripper shall be sufficient. Common depths of prestressed hollow core slabs range from 6 to 10 in. Shear capacity of hollowcore slabs with concrete filled cores. Mar 23, 2015 what sizes of hollow core slab are available. The units themselves are manufactured at a width of 1200mm and depths of 150, 200, 250, and 300mm. In todays world of innovation and fasttracking, the hollowcore floor slab is a viable and in many instances, preferable alternative to more conventional building methods. Plans locating and defining all hollow core planks furnished by the manufacturer, with all major openings shown. The excellent loadbearing capacity and structural efficiency allows you to build large areas with fewer partition walls. Hollowcore floor bearing details bison pdf catalogs.
Latex caulking of joints between precast slabs on the underside. Pdf very often, in the design process of buildings, the storey height is an essential problem for the investor and architect. Saccoman, chairperson james beerbower ernest markle kevin boyle james markle jeffrey butler milo j. The units have a smooth finish and maximum capacity of 2. Pdf design aids for precast ordinary reinforced and prestressed. Maximum stockpile for 203 mm hollow core is 6 slabs, and for 305 mm is 4 slabs. Recently, a halfpc slab or composite slab was developed to replace existing construction methods, and to improve the performance of a pc slab system a halfpc slab system hpcss is defined as a slab system that is. Savings in cost and time will keep your project on time and under budget. Hollowcore slabs lajes alveolares machinery and equipment for hollow core slabs maquinas e.
Precast concrete hollowcore slabs lafarge precast edmonton. The use of precast concrete hollowcore flooring is a highly cost effective solution that fits easily into any structural system such as steel or concrete frame or indeed masonry construction. They are the ideal choice for constructing floors in individual homes, both at ground level and upper level. Hollow core hc slabs are the most commonly used and economical precastprestressed concrete flooring system. Hollowcore slabs vary by depth, length and loading performance with the standard width of a slab being 1200mm. Hollowcore slabs are prestressed floor elements with voids. With hollow core slabs, thermal activated flooring can be installed in the high rise constructions. Proof of concept tests for hollowcore floor unit connections. Run the numbers and estimate your next project in oldcastle precast hollowcore plank. Pdf design analysis of prestressed hollow core slabs on flexible.
Keep the dunnage accurately aligned from slab to slab. Plans locating and defining all hollowcore planks furnished by the manufacturer, with all major openings shown. Slabs are available in standard widths of 900mm and 1 200mm, in thicknesses of 120mm, 150mm. In this situation the minimum thickness of the wall required is 190mm. Pci manual for the design of hollow core slabs and walls, 3rd edition free pdf download mnl12615 this manual presents in detail design of hollow core slabs for gravity and lateral loads. Pcicpci design manuals design of hollow core slabs design of hollow core slabs. A hollow core slab, also known as a voided slab, hollow core plank or simply a concrete plank is a precast slab of prestressed concrete typically used in the construction of floors in multistory apartment buildings. Pci manual for the design of hollow core slabs second edition by donald r. Specimens where the core fill concrete remained composite with the slab concrete following webshear failure had the highest webshear strengths, which indicated that bond between the core fill concrete and slab concrete is a critical factor in the shear strength of hollow core slabs with filled cores.
Bearing on masonry typically slabs are manufactured to have 100mm bearing onto a 100mm wide wall. Pci manual for the design of hollow core slabs and walls. Hollowcore slabs with castinplace concrete toppings. Setting hollowcore slabs on bearing walls forms the necessary fire separation and the. Hollowcore slabs are available in a range of seven depths. The success of this precast product is owing to the combination of.
Hollow core slabs are prestressed, precast concrete slabs, with hollow portions in the regions of zero stresses. Plans locating and defining all hollow core planks furnished by the manufacturer with all castin openings shown and located. Hollow core plank is used in a wide range of buildings as roof and floor components. A complete revision of the diaphragm chapter includes the latest design information.
It is primarily used as a floor and roof deck system. The reason for this is most likely that the torsional stiffness of the beam elements used in the model was too high. No matter what the type of design, encons hollowcore. Installation hollow core slabs are to be located and installed in accordance with expocrete drawing. Jul 28, 2014 hollow core slabs provide considerable benefits to builders and house owners. Hollowcore flooring technical manual 2003 hollowcore flooring is a technical manual covering the design and construction of projects utilising precast hollowcore flooring. Hollow core slabs precast india infrastructures pvt. In high rise building hollow core flooring offers better fire resistance and ensures better protection of inhabitants or people within building at the time of fire incidents. Large span length with tubular, hollowedout voids spanning the slabs full length, these concrete slabs present a dramatic decrease in weight, without sacrificing strength and durability. Precast concrete hollow core production edition 1 november 2008 installation of hollow core floor slabs uab betonika, naglio 4a, lt52367 kaunas.
Precast stair to landing bearing detail at base condition. Pdf the application and design of precast, prestressed hollow core slabs is similar to that of other prestressed members. However, the slabs can be manufactured to suit the specifications of your construction project. Setting hollowcore slabs on bearing walls forms the necessary fire separation and the perfect noise barrier. Prestressed precast hollow core slabs are the most widely used type of precast flooring.
Stahltons hollowcore is 1,200mm wide and comes in 200, 300 and 400mm thickness. Hollow core slabs provide considerable benefits to builders and house owners. Read the safe operating procedure on the use of timber infills applicable for the spaced hollowcore option. This bundle contains all 32 pcirecommended hollowcore details. This encon hollowcore building system design manual.
Download load tables for spancrete hollowcore in the following categories. In order to view pdf documents, you must have adobe acrobat reader installed. This office building is a prime example of how using hollow core slabs can accelerate the building process. Bolted connections under hollow core slabs, steel beam. Ultimately, this means greater freedom in design and architecture during and after construction as well as savings in material costs.
Pci mnl116 manual for quality control for plants and production of precast and. Sizes and locations of these openings are to be provided to the manufacturer by the respective trades. As the heroes of flooring, roofing, bridges, and mezzanine systems, there are 7 main advantages of precast hollowcore slabs. Hollow core slabs are economical, have good fire resistance and sound insulation properties, and are capable of spanning long distances with relatively shallow depths. Hollow core floors are used due to their lower cost and quick erection time. Sections and details showing connections, weld plates, edge conditions and support conditions of the hollowcore plank units. Dxf files can be imported directly into many common cad programs. The system offers numerous benefits to engineers and architects because it gives maximum strength with minimum weight, versatility in span depth ratio, a smooth soffit and a high speed of erection leading to an economical way to construct floors. Hollow core slab properties prop imperial metric a 235. Sections and details showing connections, edge conditions, and support conditions of the hollow core planks. The precast concrete slabs are manufactured in standard 48 widths and are available in 8 and 12 thicknesses.
Details are available in both adobe acrobat reader pdf and cad dxf format. Hollow core slabs are prestressed concrete elements that have a constant cross section. Hollowcore slab benefits of using hollowcore floor slabs. Bearing on structural steel beams, two levels of slabs were installed simultaneously. Use of precast hollow core slabs in high rise buildings. The slab serves as a ceiling for the lower level and. If you would like to download the entire detail set in one archive, please click the link below. The depth of each slab usually ranges from 110 mm to 400 mm with spans typically available up to 200 meters. Hollow core slab properties prop imperial metric a 290. Prepared for the pci hollow core slab producers committee john e. Design to other classifications is as agreed in the contract. To test theconcepts of two possible details for support ing the topped hollowcore units in buildings subjected to seismic attack. Hollow core plank technical guide 1 introduction the purpose of this technical guide is to provide assistance in selecting and detailing precast hollow core plank manufactured by silverstone precast inc additional information and standard specifications are available at silverstoneprecast. The slab has been especially popular in countries where the emphasis of home construction has been on precast concrete, including.