learn all about post-tension slab foundations: their uses, benefits, drawbacks, and how they enhance structural integrity.
discover the strength and efficiency of post tensioned concrete slabs for your construction needs. learn more today!
what concrete industry trends will play out during the rest of 2024? smartbrief explores a look at code changes, ai and more.
post-tensioned concrete (p-t) to date has been one of the most fascinating and yet underrated construction materials. its history dates to the late 19th century...
understanding post-tensioning systems
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post-tensioning concrete is a technique that strengthens construction durability by preparing the concrete to support its optimal loads.
the primary drawback of concrete lies in its low tensile strength, prompting the development of various solutions to enhance this aspect. a notable approach is the utilization of prestressed reinforced concrete (prc) with tendons, aimed at ...
discover hysustain, an eco-friendly sustainable concrete by hymix. enhance the durability and sustainability with low carbon concrete.
post-tensioning is used for the last decades for different concrete elements such as slabs, beams, walls and mat foundations. for industrial and office buildings with large spans, application of post-tensioned, (pt), concrete floors is competitive to reinforced concrete. use of pt slabs results in small sections, better serviceability, durable structures and faster construction compared to reinforced concrete construction. in some cases, it demonstrates an economic alternative to conventional concrete or steel floors. post-tensioning concrete slabs are applied using either bonded or unbonded tendons. bonded tendons is achieved by grouting the ducts containing the steel tendons after stressing. consequently, the prestressing force is transmitted to the concrete by bond along the steel tendons. in unbonded tendons applications, the ducts are left after stressing without grouting and the force is transmitted at the anchorages of the prestressing steel. this paper introduces analysis, design and construction techniques of pt concrete floors. computer model specifically made to design pt slabs satisfying the requirements of the code is introduced. case studies carried out in egypt and in the gulf area in the last few years with particular application of post-tensioning are also introduced. these case studies include buildings of spans up to 24.0 ms, as well as water tank of 100,000 m3 capacity. recommendations and design guidelines of pt concrete slabs as well as the assessment of the current egyptian code are highlighted.
the principle of post-tensioned concrete is used for post-tensioned flat slabs. the term post-tensioned concrete is used when a compressive stress is applied to the concrete through the use of prestressing steel. this technology can be used in almost all types of buildings and offers many advantages.
we are one of the leading unbonded post-tensioning companies in india providing best-in-class technologies for prestressed concrete.
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from flexibility and elegance in architectural design to sustainability and more...
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the volume 4 published for ijci journal.
learn more about understanding prestressed and post-tensioned concrete in building construction - structural engineering - evstudio .
ca investigated allegations of improper top cover in eight levels of post-tensioned concrete slabs at a mixed-use office building containing ground floor retail space. during construction of the building, the concrete cover over the distributed post-tensioning tendons was allegedly inadequate at the drop beams. eight levels of post-tensioned slabs were remediated by placing a cementitious, …
entuitive’s drive to deliver uncompromising sustainable performance in the built environment has us continually pushing the bounds.
edec is a trusted provider of advanced post-tensioning design services, supported by a team of highly skilled engineers. with extensive experience in the industry, we deliver innovative, cost-effective, and sustainable structural solutions for diverse projects, including residential, commercial, and mega developments. our commitment to structural efficiency and compliance with international standards ensures durable, optimized designs. […]
concrete is very strong in compression, however relatively weak when put in tension (ie. pulled apart), hence the use of steel reinforcement in concrete, to...
post-tensioning enhances reinforced concrete's strength and durability, offering design flexibility and efficiency in construction.
post-tensioned, shrinkage-compensating concrete eliminates pavement control joints.
discover the benefits of post-tension concrete slab reinforcement with high-strength steel. learn how post-tensioning and prestress techniques enhance the durability and strength of concrete structures.
building a multi-storey structure calls for elevated levels of expertise. contech are nz's leading structural engineers in suspended post-tensioned slabs, providing thinner floor structures, simpler construction and better solutions.
post-tensioning has become a strong contender for manufacturing reinforced concrete (rc) members, especially for flat slabs in large-span structures. post-tensioned (pt) slabs can lead to considerable material savings while reducing the embodied carbon (embodied co2), construction time, and life cycle maintenance and repair costs. in this research, a novel hybrid firefly–artificial neural network (firefly–ann) computational intelligence model was developed to estimate the cost effectiveness and embodied co2 of pt slabs with different design variables. to develop the dataset, several numerical models with various design variables, including the pattern of tendons, slab thickness, mechanical properties of materials, and span of slabs, were developed to investigate the sustainability and economic competitiveness of the derived designs compared to benchmark conventional rc flat slabs. several performance measures, including punching shear and heel drop vibration induced by human activity, were used as design constraints to satisfy safety and serviceability criteria. the economic competitiveness of pt slabs was more evident in larger spans where the cost and embodied co2 emissions decreased by 39% and 12%, respectively, in pt slabs with a 12-m span length compared to conventional rc slabs. sensitivity analysis also confirmed that the cost and embodied co2 emissions were very sensitive to the slab thickness by 86% and 62%, respectively.
post-tension concrete has numerous advantages and applications when it comes to structural foundations. learn more here.
check out ozinga pouring this tension slab pour in miami, florida. this art plaza will feature 34 floors.
explore the comprehensive guide to post-tension cables in calgary's construction. understand their role in modern architecture, their advantages over rebar, and the critical importance of regular inspections for maintaining structural integrity. lear
fortec has extensive knowledge and experience in all aspects of post-tensioning works, using mk4 post tensioning components.
most of the definitions of sustainability include three basic pillars: economic, environmental, and social. the economic pillar has always been evaluated but not necessarily in the sense of economic sustainability. on the other hand, the environmental pillar is increasingly being considered, while the social pillar is weakly developed. focusing on the environmental and social pillars, the use of methodologies to allow a wide assessment of these pillars and the integration of the assessment in a few understandable indicators is crucial. this article is structured into two parts. in the first part, a review of life cycle impact assessment methods, which allow a comprehensive assessment of the environmental and social pillars, is carried out. in the second part, a complete environmental and social sustainability assessment is made using the ecoinvent database and recipe method, for the environmental pillar, and soca database and simple social impact weighting method, for the social pillar. this methodology was used to compare three optimized bridges: two box-section post-tensioned concrete road bridges with a variety of initial and maintenance characteristics, and a pre-stressed concrete precast bridge. the results show that there is a high interrelation between the environmental and social impact for each life cycle stage.
proto-ii™ wall systems applies post-tension engineering to masonry fence walls, retaining walls, tall walls, and tract interior fences.
this document discusses applications of sustainable post-tensioned concrete slabs. it introduces analysis and design techniques for post-tensioned concrete floors according to various codes. it also presents case studies of post-tensioned buildings constructed in egypt and the gulf region, including office buildings up to 24 meters in span and a 100,000 cubic meter water tank. recommendations are provided for cable patterns, analysis, design, construction details, and assessments of code requirements for post-tensioned concrete slabs.