Ram concept contains an advanced feature set that allows for the design of a wide variety of floor systems including post tensioned, reinforced concrete and hybrid systems, elevated slabs and mat. Eriksson software precastprestressed concrete design. Eriksson software is an engineering software development firm located in tampa, florida. Posttensioned concrete design spreadsheet program a pdh. Calculation and the theory by which the software works are attached with this software s index, this thing is not seen. 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. Download free, highquality cad drawings, blocks and details of post tensioned concrete organized by masterformat. Post tension slab design software structural engineering. In this free webinar dirk bondy and bryan allred discusses the latest edition of their book, posttensioned concrete principles and practice 3rd edition as well as present the latest version. Any software that uses long term multipliers like 2 with a compression reinforcement factor is effectively useless for rc design and does not apply at all for. Pre tensioning and posttensioning in prestressed concrete design pre tensioning in prestressed concrete. Design and software expertise in posttensioning and prestressed concrete for over 30 years, adapt corporation has provided a full range of software products and engineering services for the modeling, analysis and design of prestressed pre or post tensioned concrete structures. This tek focuses on the design of concrete masonry walls constructed with vertical post tensioned tendons. Generally, a compressive strength of 22 mpa is required before stressing can be completed.
Post tensioning is a method of reinforcing strengthening concrete or other materials with highstrength steel strands or bars, typically referred to as tendons. Conventionally without post tensioning concrete would have to be poured very thick to handle loads, in addition, the size and length of concrete structures. Posttensioned concrete means that the concrete is poured and then the tension is appliedbut it is still stressed before the loads are applied so it is still prestressed. Design floors and foundations reliably and efficiently, saving time and money, and overcoming the most common concerns you face as a designer. Net, which many engineers have come to trust over the years for its accuracy and flexibility.
Adapt corporation specializes in structural concrete design software for post tensioning, reinforced concrete, and prestressed beam, slab, foundation, building and bridge structures using finite element or equivalent frame analysis. Pt designer is a computer program for the design and analysis of linear post tensioned concrete floor systems. Pt designer is a windowsbased computer program for the design and analysis of linear post tensioned concrete frames. Adapt corporation specializes in structural concrete design software for posttensioning, reinforced concrete, and prestressed beam, slab, foundation. Posttensioned, reinforced concrete slab design software ram. The forces contained within post tensioning tendons demand that owners, designers and contractors who maintain these structures have a high level of technical knowledge and skills to ensure the safety of the structure and of individuals working on, near or in the vicinity of a post. Whether you are doing a residential or commercial project, we have everything you need to get the job done. The design of general anchorage zones is critical to the integrity of any posttensioned concrete structure and we recommend that the ldp complete this task personally. Pre tensioning is accomplished by stressing wires or strands, called tendons, to predetermined amount by stretching them between two anchorages prior to placing concrete as shown in fig. Once you finish studying the above course content, you need to take a quiz to obtain the pdh credits. This course provides the user with a fundamental understanding of posttensioned concrete design to enable the use of a spreadsheet program. For this, the concrete slab is tensioned with a process called prestressing and the slab of concrete which comes out after this process is known. Economically design posttensioned and reinforced concrete floors including slabs, mats, and rafts, with exceptional visibility.
Post tensioning of foundations, transfer beams and plates, post tensioned masonry and the combination of precast elements with castinplace concrete by means of post tensioning offer other interesting opportunities. Posttensioning methods for reinforcing concrete the. A residential post tensioned concrete slab will typically be 8 inches thick and use 3000 psi concrete. Post tensioning chucks post tension accessories post tensioning strand post tensioning jacks post tensioning. For an excellent overview of pt, visit the post tensioning. Post tensioning in buildings is not limited to floor slabs. Post tension slab although concrete is a strong material for construction, it is not resistant to breakdown especially where longer concrete slabs are required like in a bridge or a length of a beam. A 2 2area 2 a c 2 2 post tensioned 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. And while code allows a licensed design professional ldp to delegate the design of the general anchorage zone to the contractor, we dont recommend taking that route.
The program enables the user to define and design posttensioned concrete beams and slabs for any strap model. See the adjacent software information links for general details regarding lusas. Post tensioning is the primary method of prestressing, where the tendons are stressed after the masonry has been placed. For the repair and modification of post tensioning pt systems as well as post tensioned concrete structure repair and protection, structural technologies offers highly specialized products and services including investigation, repair design support, repair and replacement components, corrosion protection products, strengthening solutions as well as new or replacement post tensioning systems. Posten engineering systems structural engineering is. This strength requirement is specified to match the builders construction cycle time normally at 3 or 4 days the faster the post tensioning can occur, the faster. The strength and added stiffness of a post tensioned foundation reduces the amount the slab will bend under load. Equivalent frame structural concrete design software 2d design. Beam line, shell surface and solid volume modelling of concrete is supported. Precast posttensioned segmental construction is defined as a method of construction for bridges, buildings, tanks, silos, cooling towers, tunnels and other structures in which primary load carrying members are composed of precast concrete segments post tensioned together. Post tensioning 61 component enables tekla structures to accurately model most post tensioning profiles and attributes. Its more user friendly compared to other pt design softwares. Developers, architects, engineers, contractors, educators and. What is the best software to design a post tension slab.
Post tensioning pt is one of the most advanced and efficient technologies used to reinforce concrete. Trimble partners with adapt to deliver a complete posttensioned. Consider all major aspects of slab design including service, ductility, and strength limit states, codeprescribed requirements, longterm deflections, punching shear, and walking vibration. The scope of the work covers the gravity and seismic design of new structures and the retrofitting of existing buildings. Prestressing post tensioned concrete software design. Our future vision pti envisions a future in which post tensioning is the first choice for reinforcing all structures. Posttensioning and prestressed design and software. Adaptpt designs posttensioned slabs and beam frames using equivalent frame method. Net is a windowsbased computer program for the design and analysis of linear posttensioned concrete frames. Trimble announced a partnership with adapt, a provider of posttensioned and reinforced concrete software. Post tensioning concrete increases the many benefits associated with a concrete framed building. Suncoast posttension is north americas largest unbonded post tension specialist. Impact of deterioration of post tensioned tendons in bridges.
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. Fundamentals of posttensioned concrete design for buildings part one. Posttensioning institute education pt applications. Pt designer design of posttensioned concrete floors. We are dedicated to providing the construction industry with engineering expertise, responsive service and manufacturing excellence to ensure safe, timely and cost effective installations, restorations and repairs. We specialize in analysis and design software for precastprestressed concrete in both the transportation and commercial markets. The program provides for the ultimate strength and service stress design and analysis of oneway beam and slab and twoway flat plate systems. Pt designer is a computer program for the design and analysis of linear posttensioned concrete floor systems.
Effective inspection and monitoring of posttensioned. The program enables the user to define and design post tensioned concrete beams and slabs for any strap model. Ram concept is a software application for the structural analysis and design of conventionally reinforced and post tensioned concrete floors, mats, and rafts. Design posttensioned and conventional systems design elevated concrete slabs with or without posttensioning. The software is extremely easy to use and is intended for both occasional and regular designers of post tensioned concrete beams, oneway and twoway slabs, and mat foundations. Posten engineering systems provides the tools you need to design your structures efficiently, quickly and correctly. This course provides the documentation to enable the use of a posttension design spreadsheet program for oneway concrete beam and slab and twoway. Concrete slab design software economically design post tensioned and reinforced concrete floors including slabs, mats, and rafts, with exceptional visibility into compliance, efficiency, and practicality. Post tensioned concrete is widely used in bridges, shell structures, water tanks, and. Rapt is a two dimensional post tension beamslab design software. Posttensioned concrete is typically specified having an early age strength requirement. If you want the latest theory get gilbert and ranzis book on long term effects in concrete. Posttensioning and prestressed design and software expertise for.
The program enables the user to define and design post tensioned concrete beams and slabs for any strap model the user has full flexibility in. The program is developed around the robust computational core of two popular programs ptdata. Top 10 biggest mistakes made in posttensioned concrete design. Prestress posttensioning in lusas is suitable for beams, slabs and. Pt designer, our latest post tensioned design software for more. Post tension slab design software post tension slab design software mck26 structural. In post tensioned construction, hollow concrete masonry units are laid conventionally and prestressing tendons are either placed in the concrete masonry cells or in the cavity between multiple wythes.
Seismic retrofit using externally applied posttensioning tendons. Fundamentals of posttensioned concrete design for buildings. Post tension slab advantages and disadvantages of post. Our innovative approach and extensive experience dealing with concrete and steel strand tensioning systems allows us to provide our customers with excellent pt concrete engineering results. Prestressing post tensioned concrete software design workshop. Once the concrete has gained strength to 2000 psi, typically within the 3 to 10 days recommended by pti, the tendons are stressed. Pretensioning and posttensioning in prestressed concrete. Use the tabs in the component dialog box to load a previously saved pt post tensioning tendon reinforcement that represents reinforcing bars, strands, or wires that are used to produce a compressive stress in prestressed concrete besides the actual reinforcing bars.
Adapt corporation specializes in structural concrete design software for post tensioning, reinforced concrete, and prestressed beam, slab, foundation. Reinforced concrete and partially prestressed concrete members to various design codes. This new pt software workshop will allow structuralcivil engineers to design pt structures quickly whilst still understanding the processes involved via a more interactive input of data and output of results. Most precast, prestressed concrete is actually pre tensioned the steel is pulled before the concrete is poured. Free online education presentations on post tensioning videos openair blast testing of large prestressed concrete slabs.