General overview of post tensioned concrete design. Posttensioning will reduce cracking and keep any cracks that might. Most post tensioned concrete buildings are designed using the loadbalancing method. Post tension slab video post tension concrete slab. Posttensioned slab design guide post tension slab problems. In this video, he will describe his experiences at the site as. Six problems with posttensioning force specifications. With fewer pieces to handle and less concrete to place, a post tensioned slab can often be installed more quickly than a comparable rebar or wire meshreinforced slab. The program is divided into three separate screens, which correspond to the three major areas of concern in the design of a posttensioned member.
Posttensioning concrete increases the many benefits associated with a concrete framed building. Once the slab cures, qualified personnel apply tension and grout the cables. Pt designer, our latest post tensioned design software for more. Posttension basics how posttensioned slabs are built the. Design floors and foundations reliably and efficiently, saving time and money, and overcoming the most common concerns. Post tensioned concrete analysis and design software column design software for regular and complex profiles footing design software for isolated and strip footings. Masonry walls can be post tensioned this is usually done with a solid steel bar fastened to the foundation and stressed with a nut at the walls top.
Design of post tensioned flat slab structures in ram. A residential post tensioned concrete slab is usually 8 inches thick and applies 3000 psi concrete. Download free, highquality cad drawings, blocks and details of posttensioned concrete organized by masterformat. Beams of prismatic and other cross sections, with either constant or variable cross sections. Column design software for regular and complex profiles. Presentations will focus on design, analysis, and construction of posttensioned buildings and will include handson training on the design and analysis of new posttensioned building structures. Adapt corporation posttensioning and reinforced concrete. The first edition of the posttensioning manual was published in 1972, and as of the time of this writing 2018, they are up to their 6th edition. Overview safe is the ultimate tool for designing concrete floor and foundation systems.
The program is divided into three separate screens, which correspond to the three major areas of concern in the design of a post tensioned member. Eriksson software precastprestressed concrete design. Its more user friendly compared to other pt design softwares. This spreadsheet program provides for the design and analysis of posttensioned concrete oneway beam and slab systems and twoway flat plate slab systems. A residential post tensioned concrete slab will typically be 8 inches thick and use 3000 psi concrete. Twoway posttensioned design amsysco post tensioning. Posttension cables are steel wires inserted into plastic sheathing laid in place while pouring the concrete slab. Economically design posttensioned and reinforced concrete floors including slabs, mats, and rafts, with exceptional visibility into compliance, efficiency, and practicality. Post tensioned slab design, supply, install tensioned concrete. We specialize in analysis and design software for precastprestressed concrete in both the transportation and commercial markets. A combination of these values will determine the slab stresses at the time of stressing and at service loads.
Load balancing for transfer conditions in post tensioned concrete slabs duration. Design seminar descriptions posttensioning institute. For general design philosophy and analysis of posttensioned concrete, the reader should refer to pdhonline course s127. Concrete bridge design, analysis software leap bridge concrete. Ram conce pt contains an advanced feature set that allows for the design of a wide variety of floor systems including posttensioned, reinforced concrete and hybrid systems, elevated. Calculation and the theory by which the software works are attached with this softwares index, this thing is not seen. He is the coauthor of the book posttensioned concrete principles and practice which covers the design of posttensioned concrete structures from basic fundamentals to specific. Eriksson software is an engineering software development firm located in tampa, florida. For general design philosophy and analysis of post tensioned concrete, the reader should refer to pdhonline course s127. A 2 2area 2 a c 2 2 posttensioned concrete design table 11 list of symbols used in the aci 31808 code cp area enclosed by the outside perimeter of the section, in a g gross area of concrete, in a 2 l total area of longitudinal reinforcement to resist torsion, in a o area enclosed by the shear flow path, sqin a oh area enclosed by the centerline of the outermost closed. Want to design concrete floors economically, with exceptional visibility into compliance, and efficiency while designing slabs, mats, and rafts. Ccl carries out complete designs for post tensioned concrete applications. The general criteria used for the design, such as details of material. The company uses the latest design software which is continually updated to reflect current international.
As soon as the concrete has achieved strength to 2000 psi, usually within the 3 to 10 days suggested by pti, the tendons are stressed. Tendons today are seven highstrength steel wires wound together and placed inside a plastic duct. Mar 27, 2017 this video tutorial is about pts post tension slab design which is trained by master of structural engineering mr. Posttensioned pt slabs are typically flat slabs, band beam and slabs or ribbed slabs. Post tension slab design software structural engineering. Cypecads posttensioned concrete slabs for buildings module has been designed to carry out the design of the passive reinforcement of posttensioned slabs, using the forces that have been obtained from analysing the posttensioned tendons bonded or unbonded, whose properties have been introduced by the program users posttensioned technology has different degrees of acceptance in. Posttensioning tensioned concrete offers a wide range of posttensioning solutions from mono strand systems typically used in house slabs where the ground is highly reactive, slab systems 12. For general design philosophy and analysis of posttensioned concrete, the. Longer spans can be achieved due to prestress, which can also be used to counteract deflections. This book is destined to become the definitive work on the design of posttensioned concrete buildings for.
Eriksson software precastprestressed concrete design and. Pt designer is a computer program for the design and analysis of linear post tensioned concrete floor systems. Post tension slab design software sethguthrie civilenvironmental 18 aug 16 19. The purpose of this publication is to widen the understanding of posttensioned floor construction and show the considerable benefits which include minimum storey heights, rapid construction, economy, maximum design flexibility, minimum number of columns, optimum clear spans, jointfree, crackfree. The following table of prestress losses is recommended for the design of post tensioned members, and does not include friction or wedge set losses. A residential posttensioned concrete slab is usually 8 inches thick and applies 3000 psi concrete. Concrete bridge design, analysis software leap bridge. This report presents the structural engineering calculations of a posttensioned floor using parallel beams and oneway slab construction. Ram concept is a software application for the structural analysis and design of conventionally reinforced and posttensioned concrete floors, mats, and rafts. Pt slabs offer the thinnest slab type, as concrete is worked to its strengths, mostly being kept in compression. Posttensioned and reinforced concrete slab and beam design software adaptptrc product overview since 1981, adapt softwares proven reliability and easeofuse have made it the most widely used software for the design of posttensioned slabs and beams worldwide.
Concrete water tanks are often post tensioned to reduce crack width and leakage. Rapt is a two dimensional post tension beamslab design software. Net, which many engineers have come to trust over the years for its accuracy and flexibility. Today posten engineering systems provides this same power to you. The companies that make prestressed concrete tanks are crom, dyk, natgun, and preload. Top 10 biggest mistakes made in posttensioned concrete. Pt designer is a computer program for the design and analysis of linear posttensioned concrete floor systems. Register now to learn more about this exciting partnership. Pt encapsulated systems should be clearly mentioned on all pt buildings with the. The purpose of this publication is to widen the understanding of post tensioned floor construction and show the considerable benefits which include minimum storey heights, rapid construction, economy, maximum design flexibility, minimum number of columns, optimum clear spans, jointfree, crackfree. Post tensioning tensioned concrete offers a wide range of post tensioning solutions from mono strand systems typically used in house slabs where the ground is highly reactive, slab systems 12. Pt designer design of posttensioned concrete floors. Cypecads post tensioned concrete slabs for buildings module has been designed to carry out the design of the passive reinforcement of post tensioned slabs, using the forces that have been obtained from analysing the post tensioned tendons bonded or unbonded, whose properties have been introduced by the program users. In 1971, hugh oneil created posten to enable rapid, detailed and efficient designs of posttensioned and reinforced concrete structures.
Ram concept contains an advanced feature set that allows for the design of a wide variety of floor systems including posttensioned, reinforced concrete and hybrid systems, elevated slabs and mat. Ram conce pt is a software application for the structural analysis and design of conventionally reinforced and posttensioned concrete floors, mats, and rafts. Jul 21, 2017 rapt is a two dimensional post tension beam slab design software. Structural engineers design concrete slabs with post tension cables to obtain greater span lengths between supporting columns and to allow thinner slabs. Posten post tensioned and reinforced concrete design. Post tension slab video post tension concrete slab post. This book is destined to become the definitive work on the design of post tensioned concrete buildings for many decades to come. Whether the project is local or overseas, design codes from around the globe are available for reinforced concrete and posttensioned slab design. Less concrete and steel are needed for the same structural capacity and the slab stiffness is increased so that the slab is better able to resist bending caused by differential soil movements. Threedimensional 3d finite element software for the integrated analysis and design of concrete and posttensioned floor and foundation systems. In 1971, hugh oneil created posten to enable rapid, detailed and efficient designs of post tensioned and reinforced concrete structures. Concrete slab design software economically design posttensioned and reinforced concrete floors including slabs, mats, and rafts, with exceptional visibility into compliance, efficiency, and practicality.
Streamline your next posttensioned concrete project. Design of post tensioned flat slab structures in ram concept. Whether the project is local or overseas, design codes from around the globe are available for reinforced concrete and post tensioned slab design. Economically design post tensioned and reinforced concrete floors including slabs, mats, and rafts, with exceptional visibility into compliance, efficiency, and practicality. Support everyday concrete bridges of all types, including precast and castinplace, reinforced, pre tensioned, and post tensioned. Once the concrete has gained strength to 2000 psi, typically within the 3 to 10 days recommended by pti, the tendons are stressed.
Posttensioned, reinforced concrete slab design software ram. Posttensioned concrete analysis and design software. Threedimensional 3d finite element software for analysis and design of concrete and posttensioned floor and foundation systems. Dec 16, 2016 etabs 24 reinforced concrete slab design. Post tensioned concrete design table 11 list of symbols used in the aci 31808 code m bal design moment resistance of a section with tendons and the necessary mild reinforcement to reach the balanced condition, nmm m u factored moment at section, lbin n c tension force in concrete due to unfactored dead load plus live load, lb p.
The design is based on hong kong building code hkcop 2004 and its amendment of june 2007. Structural engineers design concrete slabs with posttension cables to obtain greater span lengths between supporting columns and to allow thinner slabs. Whatever the posttensioning requirement tensioned concrete has the. The strength and added stiffness of a post tensioned foundation reduces the amount the slab will bend under load. If you use mixed steel, wood, or masonry then ram structural systemconcept is probably a better option. Net can be used to design and analyze prismatic frames where the crosssection of the beams or slabs can vary from one span to another span, while the crosssection remains constant between supports in.
Jun 04, 2019 engineers who specialize in post tensioning design and who are comfortable with large and complex projects benefit most from the rigorous method. Design floors and foundations reliably and efficiently, saving time and money, and overcoming the most common concerns you face as a designer. The posttensioning institute designed posttensioned foundations. Post tension cables are steel wires inserted into plastic sheathing laid in place while pouring the concrete slab. Post tensioned and reinforced concrete slab and beam design software adaptptrc product overview since 1981, adapt software s proven reliability and easeofuse have made it the most widely used software for the design of post tensioned slabs and beams worldwide. Durability aspects of present pt systems, key design concepts, code requirements, and practical design and construction tips will also be discussed. The following table of prestress losses is recommended for the design of posttensioned members, and does not include friction or wedge set losses. Reinforced and posttensioned concrete slab design software. The software is extremely easy to use and is intended for both occasional and regular designers of posttensioned concrete floor systems. Posttensioned and reinforced concrete slab and beam. Input uniformly distributed loads independent of slab geometry. Load balancing for transfer conditions in posttensioned concrete slabs duration. Post tension slab design software structural engineering general. Instantly download a sample cad collection search for drawings browse s of 2d cad drawings, specifications, brochures, and more.
The program is developed around the robust computational core of two popular programs ptdata. The software is extremely easy to use and is intended for both occasional and regular designers of post tensioned concrete floor systems. Advantages of using posttensioning for your next slabonground project. The results of this program have been compared to other proprietary software that. Posttensioning, which is a form of prestressing, has several advantages over standard reinforcing steel rebars. Mgt, mieaust, cpeng summary this paper outlines the major advantages of the use of posttensioning in building structures. Posttensioned concrete design spreadsheet program a pdh. A posttensioned foundation is a concrete slab foundation that is reinforced with stranded steel cables that are tensioned after. What is the best software to design a post tension slab. Economics of the posttensioning slab system are discussed including relative material contents, speed of construction, and factors affecting the cost of. This video tutorial is about pts posttension slab design which is trained by master of structural engineering mr. The additional time and effort expended when using this method are offset by the economy in design. Service stress analysis, ultimate moment strength and ultimate beam.
Actual losses, whether greater or smaller than computed values, have little effect on the design strength of the member but do affect service load conditions i. Post tensioned foundation information for the homeowner. This system gained wide use in both austin and san antonio because of the lower cost which the posttensioned slab enjoyed compared to the heavier f. Support everyday concrete bridges of all types, including precast and castinplace, reinforced, pretensioned, and posttensioned. It allows slabs and other structural members to be thinner. Posttensioned and reinforced concrete slab and beam design. Streamline your next posttensioned concrete project tekla. A residential posttensioned concrete slab will typically be 8 inches thick and use 3000 psi concrete. Posttension basics how posttensioned slabs are built. Adapt corporation specializes in structural concrete design software for post tensioning, reinforced concrete, and prestressed beam, slab, foundation.
Presentations will focus on design, analysis, and construction of post tensioned buildings and will include handson training on the design and analysis of new post tensioned building structures. Built on adapts unique truestructure modeling and analysis technology, this software provides a powerful, yet easy to use. Inducta engineering concrete buildings design software. This spreadsheet program provides for the design and analysis of post tensioned concrete oneway beam and slab systems and twoway flat plate slab systems. It was found that a certain amount of poor design was prevalent, and the. Experience and expertise gained from working on projects around the world, are combined to deliver prompt, effective solutions. Support multiple design codes, including us aashto lrfd and lfd, canadian chbdc, and indian irc working stress and limit states design. It reduces or eliminates shrinkage crackingtherefore no joints, or fewer joints, are needed. Slabonground design by using the pti ken bondy method.
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