They are easy to handle since each panel can be lifted by two workers andor by using simple lifting equipment. We have done our best to explain words like geogrid. Mini slabs are ideal for projects where short spans of up to 6. Prestress helps you analyze and run calculations on many types of prestressed concrete elements including hollow core slabs. Insulating concrete forms are hollow blocks, planks, or panels that can be. Composite action between the castinplace concrete topping and the hollowcore unit is developed primarily through bond at the interface. Design shall be in accordance with aci 318 and applicable codes. Hollow core wall panels 12 mgo wall panels 10 prefabricated partition walls 11 lightweight interior wall panels 12 precast hollow core wall panels 10 lightweight partition walls 10 lightweight building panels 7 hollow core concrete panels 10 fireproof wall panels 10 sound insulation panels 8 aac wall panels 6 prefabricated. Adobe acrobat reader is free and can be downloaded here.
Aci method of proportioning concrete mixes the aci standard 211. Check out the various load charts designed by the team at colonial precast concrete llc. Hollowcore residential applications county materials. Jan 16, 2019 learn more about revit software increasing modelling speed on precast projects, revit includes thirteen additional types of precast hollow core slabs, offering additional. The waflegrid icf wall system is a concrete wall composed of closely spaced vertical. You can access tables from previous editions of the handbook as well as the current edition. Compressive strength test on concrete core calculation.
Over the last four decades, we have emerged as a major supplier of structural, architectural and hollow core solutions to markets in canada and the united states. The laboratory specimens were constructed using short segments of hollow core units onto which a castinplace concrete block representing the topping concrete was placed. For additional explanations on using these tables, refer to the respective handbook editions. Autodesk structural precast extension for revit concrete. This encon hollow core building system design manual has been designed to illustrate the many ways in which hollow core precast concrete can function as a multipurpose building system or as an integral component of a building system. It is customary in the hollow core industry for the producer to perform the final engineering for the product to be supplied to the job. Ppc column software is an easy to use program for the design precast prestressed concrete columns based on the aci 318 code and the pci design handbook. Output consists of a mix of text and graphs, allowing the user to quickly. The software auto adjusts for water content based on readings of the moisture probes. Hollow core 8 203 mm load tables 12 strands m r knm. Since 1975, we have been a premier producer of precastprestressed concrete products.
Hollow core stubbes precast concrete, cement and redimix. The hollow core slab is manufactured in a standard 4 width and 8, 12, and 12. Moisture content of the mixed concrete shall also be automatically controlled and adjusted by the software thus ensuring consistent concrete mix at all times. Precast, hollow core, concrete wall panel advantages. Reinforced concrete wall design basics mike oshea, p. Construction estimating software, civil engineering construction, construction cost, residential construction, design build firms, building design, concrete mix design, architectural engineering, water storage. 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.
Reinforced concrete slab and beam design software adaptrc. Autodesk structural precast extension for revit concrete design. The contractor establishes the initial parameters for a mix design and serves as the starting point for subsequent proportioning calculations. It is constructed in various engineering projects to serve different purposes.
Jul 25, 2017 autodesk structural precast extension for revit is a bimcentric offering for modeling and detailing precast elements that improves productivity and precision for engineers, detailers and. It also creates wide open spaces without the need for columns, trusses or joists. Guide specification for hollow core plank index page. These elements are prestressed with pretension in a precast concrete plant. The laboratory specimens were constructed using short segments of hollowcore units onto which a castinplace concrete block representing the topping concrete was placed. 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 construction site hollow core. Beyond the potential for taller walls, he adds, integrating xl blocks into a retaining wall design offers such benefits as a streamlining installation with twice as much face coverage for each machineset unit. It is among the few building materials produced directly on the job by the user. These include requirements for the design of wall piers that amplify the design shear forces and prescribe wall pier detailing and requirements for. It lets you manage every aspect of your precast concrete detailing, 3d.
Concrete hollow blocks, precast concrete and cast in place. Download brochure hollowcore slabs are precast prestressed concrete elements extensively used for floor, roof slabs and wall panels. Download your reinforcement strand calculation demo from the link below. 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.
This video will walk you through a variety of retaining wall options including designing uniform, sloped, stepped, cantilever or propped retaining wall options. Flooroffice, the complete and fully integrated software solution for hollowcore flooring and precast industries, supports all types of prefab floors. This encon hollowcore building system design manual has been designed to illustrate the many ways in which hollowcore precast concrete can function as a multipurpose building system or as an integral component of a building system. Compressive strength test on concrete core calculation and results. Each producer of hollowcore slabs uses a trademarked process that creates different shapes to form the voids within the pieces. This comprehensive and easy to use resource has been divided up into the different project stages design approach, preplanning, preliminary design, final. Lafarge precast concrete insulcore wall systems are ideal for warehouses, manufacturing plants, schools, retail, office buildings, recreational facilities, hotelsmotels, retirement residences, and virtually any other architectural application that calls for strength, beauty and fast track construction. Coreslab structures precast concrete building solutions. Concrete mix shall conform to aci 2111, current edition.
Eriksson beam precastprestressed concrete beam design. Why are more and more designers using precast hollowcore. By mark crawford the advantages of precast concrete in todays construction environment are seemingly endless. All types of horizontal precast members can be designed, including double tees, inverted tees, spandrels and hollow core slabs. It provides the solution for a simply supported slab with two overhangs one on either side of the support for different loading conditions viz. Hollowcore slabs with castinplace concrete toppings. Concrete mix design, form design, and engineering george e. Construction of concrete block retaining walls with steps. Precast concrete, hollow core plank, beams and columns. Eriksson commercial includes eriksson wall, beam, connect, and column. It requires good compaction and a proper concrete mix design. Prepared for the pci hollow core slab producers committee john e. Standard widths are 48 inches and thickness of 8,10 and 12 inches. Load tables and span charts can be found under design resources.
Much of the concrete centres output is aimed at freeing the designer from laborious tasks to allow time to choose the best structure using further design tools. Creators of retaining wall design software called ncma srwall that is a standard. Steel reinforcement to promote composite action across concretes cast at differ this paper reports tests on two types of hollowcore units dry. If it is for lowend applications, you might just go off a strength based approach but several other parameters factor in when youre looking at. Point, udl and point torsion dead and live loads with straight strand profiles. Saccoman, chairperson james beerbower ernest markle kevin boyle james markle jeffrey butler milo j. Fast process with elislab, no time is wasted for going back and forth between different programs and documents. Concrete products redirock optimizes block design for. As a manufacturer of prefab floors flooroffice offers you the ability to speedily work through the entire. Hollowcore flooring technical manual 2003 hollowcore flooring is a technical manual covering the design and construction of projects utilising precast hollowcore flooring. Calculating prestressed hollow core slabs dlubal software. Our hollowcore slabs are typically used as floor members in hotels, motels, apartmentscondominiums, college dormitories, self storage facilities and multimillion dollar mansions. Our precast hollowcore slabs are significantly lighter when compared to solid precast concrete floor slabs. Vcon wall panel length can be extended to 12 meters, which is suitable for external wall of factories, department stores and commercial buildings.
The strand bond between the prestressed strand or wire and concrete is also important. In order to view pdf documents, you must have adobe acrobat reader installed. The designs are based on the provisions of building code requirements for structural concrete aci 31808 and precast design handbook 7th edition. Manual for the design of hollow core slabs second edition by. Because of hollowcores high loadbearing capacity, it can handle unique design loads from tile and stone floors, fireplaces, wall partitions, columns and even oversize vehicles. Concrete hollow blocks, precast concrete and cast in. This unique connector allows the wall system to behave unlike that anticipated by buildingcodedefined design methods. Introduction concrete is one of the most versatile, economical, and universally used construction material. Retaining wall glossary by cornerstone wall solutions. Hollowcore is easy to work with and accomodates other building trades. The relatively large size compared to regular size blocks, and the interlocking design, means that these hollow core foamed concrete clc panels can be assembled into a wall far more quickly than regular sized blocks can.
How to reinforce a hollow concrete block wall hunker. How to apply hollowcore panels as a floor type in revit. Precast concrete wall panels have become a standard building component in melbourne with a large number of precasters servicing the market. Ready mixed concrete is proportioned and mixed off the project site. All other loads specified for hollow core planks where applicable. The following sections from the pci design handbook include interaction curves, load tables, and section properties for various precast concrete components. The success of this precast product is owing to the combination of high efficiency of design, automated production technology resulting in remarkable low. Hollow core concrete panels lightweight wall panel. This material is used in the hollow core of retaining wall blocks and directly behind the wall. Drymix concrete is typically used in hollowcore slab production. Details of the wall panels showing hollow cores is given in fig.
It is possible to strengthen the hollow concrete block wall structure to offer this the particular level of resistance necessary to stand up to flexural stress. Pci manual for the design of hollow core slabs and walls. Along with being significantly easier to lift and handle during. Manual for the design of hollow core slabs second edition by donald r. It depends a lot on the type of concrete youre trying to make.
The slab has been especially popular in countries where the emphasis of home construction has been on precast concrete, including northern europe and former socialist countries of. An example of proportioning a mix design through use of this form is detailed in table 3. These two types were selected to broaden the applicability of the research results. As an example, in regard to mechanical resistance en 369 cl 4. Hollowcore planks can be attached to cmu walls, steel beams or precast wallsbeams. Foamed concrete hollow core panels for building walls. Zeroslump, highstrength concrete with a 28day strength in excess of 8,000 psi and. Jul 31, 2014 encourage the concrete mix designer to think in terms of the low wc ratios and aggregate content instead of strength and slump as the starting point for the concrete mix design. Hollowcore slabs are precast prestressed concrete elements extensively used for floor, roof slabs and wall panels. Why are more and more designers using precast hollowcore plank. Information on the key types of hollowcore and the signature shapes produced by each process can be found in the pci design handbook 7th edition.
Owners, contractors, architects, and engineers will discover that hollowcore building systems. Development of a precast concrete shearwall system. Construction load tables colony precast concrete llc. Concrete mix design calculation for m20, m25, m30 concrete with.
Dxf files can be imported directly into many common cad programs. The program has many features including an interactive section editor, several load input methods, 3d visualization of column elements and reinforcement, automatic envelope straining action calculations, and an organized text report. Precast concrete, hollow core plank, beams and columns, wall. Posted on august 31, 2017 the hollowcore product was first introduced to our region in the 1950s and quickly became the concrete floor system of choice for many designers. Owners, contractors, architects, and engineers will discover that hollow core building systems. The slab modules are intended for the analysis and design of hollow core, solid and doubletee shaped precastprestressed slab with conventional reinforcements, prestress strands or combo for inservice condition. Precast extension for revit concrete design software overview.
The software auto adjusts for water content based on readings of. The product thickness is designed as 75mm, 95mm or 115mm prestressed slabs and used on site with a 50mm reinforced topping screed in an unpropped construction. Mixing of lowslump concrete is critical because the limited water available must be well. It suits for use at precast plants and design offices alike. Elematic is a machine extruded, precast, prestressed hollow core plank. Concrete mix design software free download concrete quality.
Eriksson beam allows the engineer to quickly analyze and design precastprestressed concrete beams in accordance with aci 318. Eriksson beam precastprestressed concrete beam design and. This would include design for vertical loads and lateral loads specified by the engineer of record, embedded items for specified connection forces, and han dlingandshipping. Check here if you wish to receive emails from spancrete. To know proper mix, it is important for the user to. Construction of concrete block retaining walls, with step by step process, materials, advantages, applications and its construction inspection are discussed. There are also three categories of icf systems based on the resulting form of the concrete wall. Construction estimating software, civil engineering construction, construction cost, residential construction, design build firms, building design, concrete. 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 precast, prestressed concrete elements that are generally used for flooring. Precast prestressed hollow core slabs consist of composite, uniaxially stressed non. Retaining wall glossary used for searching words that are not really in our common day to day language.
Precast concrete also maintains its structural integrity even when subjected to the intense heat of a fire. The initial step in proportioning the mix design is to calculate the water content per cubic yard of concrete. It has gone through a thorough examination and approved for use by the finnish concrete association, according to the national statement on requirements for safety and trustworthiness of design and calculations of hollow core slabs. 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. Concrete mix design software free download without registration unlimited functionality optional services free for 28 days no cancellation required. Aug 31, 2017 why are more and more designers using precast hollowcore plank. Erector should have a minimum of 5 years of experience in precast hollow core slab concrete. Vcon hollow core wall panel is durable with state of the art architectural design. Whether your precast software of choice is bricscad, autocad, or revit. Complete and integrated software for precast flooring. High strength prestressing strands are cast into the planks at the spacing and location required for the given span, loading and fire cover conditions. Building walls using hollow concrete block is an economical means to creating a structure. The concrete hollow core slabs have between four and six longitudinal cores running through them, the primary purpose of the cores being to decrease the weight, and material within the floor, yet maintain maximal strength. A variety of architectural finishes are available with hollow core wall panels.
Spiroll hollowcore slabs can also be utilised for wall. From a structural design standpoint, it is only the shape of. Details are available in both adobe acrobat reader pdf and cad dxf format. How to apply hollowcore panels as a floor type in revit projects. This session is not intended to teach concrete design, but more of an awareness of why things are the way they are american concrete institute building code requirements for structural concrete aci 318 which is referenced in nrcs. Thanks for your interest in building with precast in the residential space. Ease and cost of design are important factors in the choice, efficient design, and buildability of building frames. The hollow core slab module is intended for the analysis and design of hollow core slab with conventional reinforcements, prestress strands or combo for inservice condition. Trusted by all hollow core producers of finland elislab 2. Guide specification for hollow core plank nitterhouse concrete. This program is for the personal use of fulltime aec students at uks heis and for their lecturers. However, hollow concrete block walls are not structurally very strong and will not resist the flexural stress that a wall is subjected to, causing them to collapse easily. Calculate quantities of materials for concrete cement, sand, aggregates.
This success is owing to the combination of high efficiency of design, automated production technology resulting inremarkable low price, versatility in the continue reading. Please provide your email address to learn more about how one builder maximized the benefits offered by precast. The materials and design process used to create taracon precasts hollowcore precast concrete slabs and floor panels make them naturally highly resistant to sound transfer. The key requirement is stability of fresh concrete.
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