Hcs are advanced products in the prestressed precast concrete industry, especially in terms of efficient use of material low selfweight, and given their high quality due to the efficient production line manufacturing process. Minimum end bearing is 75mm unless specified otherwise on drawings. The longspan capability is ideal for offices, retail or car park developments. As an added benefit, the hollow core slabs will eliminate the need to drill the slab for electrical and mechanical runs. Dynamic hollow core concrete block cad blocks free cad. How to apply hollow core panels as a floor type in revit projects. The recommendations derived from these and other studies vary from extremely light to extremely heavy. Hollow core slabs hcs were developed in the 1950s when longline prestressing techniques evolved. Practical failure criteria for singly reinforced slabs. Reinforced concrete slab and beam design software adaptrc 2017 product overview an easytouse and learn software for the design, analysis, and investigation of reinforced nonprestressed concrete beams, beam frames, slabs and floor systems a must have production tool in every structural engineering office. Hollowcore commercial applications county materials. Precast prestressed hollow core slabs consist of composite, uniaxially stressed non. Smart floors, beside the ability to create hollow core slabs, it can also insert floors by selected rooms to quickly insert different floor layers in different areas.
It was actually the widespread use of the posttensioned slab onground which induced this interest in design procedure and in many studies of reported slab failures. The topping may increase the flexural strength, shear strength, and bending stiffness of the slab if composite action is developed with the hollow core units. Dxf files can be imported directly into many common cad programs. Our prestressed hollowcore slabs are designed for use primarily as structural flooring components, however, they can also be used as roof deck components in buildings that have one or multiple levels. Chapter 7 fire resistance of assemblies made with hollow core slabs.
They are manufactured using high tensile strength prestressed strands or. Foreword this report is intended to serve as a manual of good practice for the design of prestressed concrete flat slabs in addition to the recommended procedures, other methods are described for the sake of completeness and to compare. Voids do not update when the width of the hollow core slab is modified. Largely because of fast onsite construction, bison hollowcore floors are one of the most economic flooring solutions for the widest variety of situations including masonry, steel and concrete structures for retail, commercial and industrial buildings. Calculating prestressed hollow core slabs dlubal software. Saccoman, chairperson james beerbower ernest markle. Issn 01103326 proof of concept tests for hollowcore floor unit connections by professor des bull and jeff matthews this report has been prepared for precast nz inc. Plans locating and defining all hollow core planks furnished by the manufacturer, with all major openings shown. Precast concrete is highly fireresistant and an excellent material for compartmentalization as it slows the. Fall protection plan for precastprestressed concrete. Hollow core slabs precast india infrastructures pvt. The units themselves are manufactured at a width of 1200mm and depths of 150, 200, 250, and 300mm. To obtain a higher slab thickness, normal carbonate concrete field topping can be added to gain a higher total slab thickness. Manual for the design of hollow core slabs second edition by donald r.
Continuous voids in the planks reduce their overall weight and help keep building costs in. Design and analyze prestressed or reinforced concrete. The hollow core slab in practice will be supported on bottom flange of iprofile with welded plate on bottom in one side and another by rhs beam with welded plate on bottom. This manual presents in detail design of hollow core. Pdf download for longitudinal joint performance of a concrete hollow. The slab serves as a ceiling for the lower level and creates a column free area that can be used for storage or as functional living space. Hollow core spans 50 feet plus continuous installation minimizing down time on site for other trades proper coordination and quick installation allows for a fastpaced. Download 405 hollow core slab stock photos for free or amazingly low rates. Installation hollow core slabs are to be located and installed in accordance with expocrete drawing.
Hbl has stateoftheart technology to offer precasted prestressed hollow core slabs with advanced extrusion technique. Span of slabs varied from 5m upto 18m placed simply supported over beams. Hollow core slabs are prestressed, precast concrete slabs, with hollow portions in the regions of zero stresses. Hollowcore slab benefits of using hollowcore floor slabs.
Smart floors lets user create smart group of floors to model hollow core slabs, track project changes, and update them anytime. Create a hollow core type family revit products 2018. It suits for use at precast plants and design offices alike. A study on multi storied building manual calculation. Hollow core slab properties prop imperial metric a 235. Hollow core slab properties prop imperial metric a 290. Hollow core slab planks panels roofing flooring walls external. 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. Setting hollow core slabs on bearing walls forms the necessary fire. This dynamic cad model can be used in your structural design cad drawings. Feasibility of construction with hollowcore concrete. If you download a 30 day free trial of the software you could.
Feasibility of construction with hollowcore concrete slabs. Download this free 2d cad block of a dynamic hollow core concrete block. To check the validity of the method, 49 shear tests on hollow core slabs with thickness 200. Cascadia model generated by a different methodology than other slab1. 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. Precast concrete floor support and diaphragm action core. Pci manual for the design of hollow core slabs second edition by donald r.
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. Hollow core slabs are prestressed concrete elements that have a constant cross section. Hollow core slab machines work on a longline table, using the highstrength lowrelaxation steel strand as the guide, using the pushing work method to form the concrete hollow core slab. Pdf design analysis of prestressed hollow core slabs on. Floor slabs are suitable to bridge larger spans at lesser height of a structure. Final year, department of civil engineering, bit durg. Mar 27, 20 transmission class rating ranges from about 47 to 57 without topping and the impact insulation1. Prepared for the pci hollow core slab producers committee john e.
Details are available in both adobe acrobat reader pdf and cad dxf format. Jun 06, 2014 hollow core slabs are prestressed concrete elements that have a constant cross section. These elements are prestressed with pretension in a precast concrete plant. Hollow core slab stock photos download 405 royalty free photos. Read online 6 elematic hollow core girder slab book pdf free download link book now. Longitudinal joint performance of a concrete hollow core slab. Hollow core slab bridges are constructed by placing prefabricated or. Hello, id like to contribute to this forum three excel sheets of my design, nothing too fancy but thats what im capable of the first is a singly reinforced concrete beam one layer. Jun, 2016 best 2in1 precast plant extruder slipformer slab pagar lintel piles. These specifications cover manufacture, transportation, and erection of precastprestressed hollow core plank, as manufactured by nitterhouse concrete products, inc. Item detail mnl126 manual for the design of hollow. Hollowcore slabs from gulf precast are used horizontally in all type of structures such as villas, buildings, commercial and industrial. Hollow core provides superior moisture control and protection from mold development and water. Hollowcore flooring is a precast prestressed concrete slab with tubular voids which run through the full length of the slab, thereby reducing the weight of the unit.
In order to view pdf documents, you must have adobe acrobat reader installed. Hollowcore residential applications county materials. Hollowcore flooring technical manual 2003 hollowcore flooring is a technical manual covering the design and construction of projects utilising precast hollowcore flooring. Pci manual for the design of hollow core slabs donald r. The eurocode 2 method overestimated the mean shear resistance of all tested slab types. However, my colleagues and i have noticed that beams are not good solution for hollow core panels. Other topping materials such as gypcrete can be added to achieve a fire endurance using different tables. Sections and details showing connections, weld plates, edge conditions and support. A hollow core slab is a precast, prestressed concrete with continuous voids. Mar 03, 2016 the common method of constructing hollow core slab is by using high strength, zero slump concrete which is reinforced by using high tensilestrength, prestressing wire strands of 9 mm diameter.
Hollowcore slabs have excellent span capabilities, achieving a capacity of 2. Reinforced concrete slab and beam design software adaptrc. Longitudinal core holes in floor slabs can be used as service ducts for. Feasibility of construction with hollow core concrete slabs over r. Hollowcore slabs with castinplace concrete toppings. 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. Keep the dunnage accurately aligned from slab to slab. Slabs arrive onsite with a smooth prefinished soffit. Shear capacity of prestressed hollow core slabs on flexible supports. Hollow core slab and precast prestressed planks hi all, i am new user to structural bridge design. The contractor hereby warrants that the precast accordance with. As an example, in regard to mechanical resistance en 369 cl 4. Pci manual for the design of hollow core slabs and walls. Therefore, in order to model thr one way behaviour, u display the local axes of the area and u assign 0.
Dont use the shear design its not complete with aci 31814 the second is a hollow core pretensioned slab analys. Download your reinforcement strand calculation demo from the link below. A hollow core slab is a precast slab of prestressed concrete. Hollowcore gets its strength from pretensioned steel strands that are embedded in high strength concrete. Once the end of the column is through the slab opening, there will no longer exist a fall hazard at this location. This site is like a library, you could find million book here by.
Saccoman, chairperson james beerbower ernest markle kevin boyle james markle jeffrey butler milo j. It should be noted that astm standards are minimum design specifications. Connections in concrete wall gaskets, concrete wall. Products typically cured in a kiln or a combination of. Bolted connections under hollow core slabs, steel beam. Experimental and numerical investigations gave insight into the fire performance of hplwc hollow core slabs and highlighted. Oct 11, 2016 hi chan kok tiong, structural bridge design is intended to be used for the structural analysis and design of bridges to bs5400, eurocode 2, aashto and as5100, but the methods are generally very similar to those for buildings so with a little bit of engineering judgment it may be possible to use the software to carry out the calculations for hollow core slabs used in building construction.
Preconslab is a software tool to design and analyze prestressed or reinforced concrete flooring systems. At taracon precast, we know that having strong and durable flooring is critical to creating a successful building structure. Using this unique slab will not only reduce building costs but will also reduce the overall weight of a structure. Revit addon for precast slab system creation smart floors. All books are in clear copy here, and all files are secure so dont worry about it. Resistance of prestressed hollow core slabs against web. After the formation of the new state of chhattisgarh, several construction activities came up as a part of the infrastructural development scheme. This comprehensive and easy to use resource has been divided up into the different project stages design approach, preplanning, preliminary design, final. The product is immediately stripped and the form is reused. Plans locating and defining all hollowcore planks furnished by the manufacturer, with all major openings shown. Betonika uab, a leading company in the sector of precast concrete element manufacturing, produces floor slabs to individual projects, therefore the architects are provided with greater freedom when designing internal spaces of buildings and preparing layouts of the rooms. Adobe acrobat reader is free and can be downloaded here. Design analysis of prestressed hollow core slabs on flexible support. Hollowcore residential applications discover a homes hidden potential for additional space with hollowcore maximize space in any house plan with hollowcore roof and floor systems.
Limit on free end slip for using aci development length equations. Yes, this is a functionality we are currently developing. Proof of concept tests for hollowcore floor unit connections. Failure modes and shear design of prestressed hollow core. I attach a typical pdf output report for the beam above which should demonstrate the calculations used in determining the characteristic and limiting stresses for midspan. A complete revision of the diaphragm chapter includes the latest design information. As of today we have 77,897,669 ebooks for you to download for free. As it is complicated to do that in robot, i will just use the default setting in robot, i. Mnl126 manual for the design of hollow core slabs free pdf. Pci manual for the design of hollow core slabs and walls, 3rd edition free pdf download mnl12615.
Units are installed with or without a structural screed, depending on requirements. If the length of the cutout is more than 50 cm, it is necessary to use lateral enforcement a1 and longitudinal a2. Download 6 elematic hollow core girder slab book pdf free download link or read online here in pdf. For 200 mm slabs and slabs with flat webs the overestimation was tens of percent. How to apply hollowcore panels as a floor type in revit. Well have email notifications optional, of course for new followers, new comments and a weekly update. Hollow core slab stock photos download 405 royalty free. Hollow core slabs hdf epd search the international epd.
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