0000001930 00000 n Precast concrete panels used in wall systems have many different finishes and shapes. Functional / Operational—Ensure Appropriate Product/Systems Integration, See appropriate sections under applicable guide specifications: Unified Facility Guide Specifications (UFGS), VA Guide Specifications (UFGS), DRAFT Federal Guide for Green Construction Specifications, MasterSpec®. Sandblasting a concrete surface can produce a surface that is less resistant to moisture penetration. We offer a variety of prefab walls and precast concrete products including foundations and panels. Precast Concrete Wall Panels Price (Approximate) : 90 per Square Feet. 0000003545 00000 n The precast concrete manufacturer designs the cladding for the specified loads, erection loads, connection details, and provides for the weatherproofing, performance and durability of the cladding itself. Another method of evaluation is to expose samples of the concrete to an accelerated weathering procedure, and evaluate physical and mechanical properties for changes. In addition, precast concrete may be made in a controlled environment and erected in an environment that would not allow site casting of concrete. This process of work is prepared and cured in a controlled factory environment, which is then transported to the construction site and is being lifted into the place. Precast concrete wall systems allow a wide variety of colors, finishes and architectural shapes. 0000000016 00000 n 0000003622 00000 n 0000001423 00000 n 0000005665 00000 n ... PRECAST PANEL WALLS. As a result, the assessment of samples is a key component in the use of precast concrete. xref Precast Wall Connections O'Reilly Concrete One 2020-04-28T11:32:41+00:00 Precast Wall Connection Videos A Typical Foundation layer with an O’Reilly precast wall. It is a cost-effective way to add additional design elements to any project. Aug 27, 2018 - Explore Kevin Linton's board "Precast panel detail" on Pinterest. In commercial construction, the most common back-up wall element for architectural precast concrete wall systems is an insulated, metal stud back-up wall assembly. Also, damage from handling during construction can result in panel cracking, some of which may not become evident for several years. See more ideas about facade architecture, facade design, precast concrete. Petrographic evaluation (ASTM C856) is also commonly used to evaluate aggregate in an effort to identify the mineral composition of the concrete and particularly the aggregate, and based on these observations and past knowledge of those characteristics, to predict future performance. Evaluation of future precast concrete durability is performed in several ways. Typically, each precast panel is independently supported to the building structure using an assemblage of metal components and anchors. Other loads such as erection, impact, construction related, and transportation must also be taken into account in the design. There are generally four types of precast panels used as part of building envelopes: 1. Explore our products Learn more about Superior Walls We specialise in design and manufacture of precast concrete wall panels, pre-stressed concrete panels, columns, bridge beams and abutments, Super Tee, Double Tees, hollowcore, culverts, underpasses, motorway barriers, seawall blocks and more, and can provide a decorative finish or to specific architectural design. 0000006661 00000 n 0000006395 00000 n In some cases where additional moisture protection is needed, the application of a sealer or a concrete coating is also used. The joint seal should of course be adequately designed to withstand the movement of the joint. History of the concrete mix and finish can also provide useful information. by Paul E. GaudetteWiss, Janney, Elstner Associates, Inc. 0000002071 00000 n The connections for precast concrete panels are an important component of the envelope system. Joints between panels must be wide enough to accommodate thermal expansion and differential movements between panels. A mix of limestone gravel, minerals and additives are mixed into a slurry. The majority of the review and approval process is conducted at the precast plant prior to precast panel production. A precast concrete wall system and cast-in-place facade will provide similar performance regarding sound transmission from the exterior to the interior of the building. Joints between precast concrete wall units may be characterized into three basic types: rain screen joints (single bead), face sealed joints (single bead) and modified rain screen Joints (two stage joints). In most cases, the architect selects the cladding material for appearance, provides details for weatherproofing, and specifies performance criteria. Precast concrete houses have fewer joints, and dimensional accuracy allows for the snug fitting of acoustically sound windows and doors. Should you have any questions or comments on the WBDG, please feel free to contract our team at wbdg@nibs.org. 0000002812 00000 n 0000012582 00000 n Architectural precast concrete has been used since the early twentieth century and came into wide use in the 1960s. These loads must be transmitted through the wall system and secondary structural elements to the building's structure. Precast concrete wall systems offer a wide variety of shapes, colors, textures, and finishes to the designer. The effectiveness of precast concrete shear walls is largely dependent on the panel-to-panel connections. 0000000854 00000 n Sep 18, 2019 - Explore Eric Gewirtz's board "Precast Concrete Panels" on Pinterest. PRECAST CONCRETE PANEL CURTAIN WALL • AIR BARRIERS AND SEALANTS • ATTACHMENT SYSTEMS • CASE STUDY BUILDINGS • RAIN PENETRATION AND MOISTURE CONTROL • SYSTEM JOINTS AND CONNECTIONS • SYSTEMS COMPARISIONS • THERMAL INSULATION AND R VALUES A typical detail of a precast concrete curtain wall on a site cast concrete frame. Load-bearing wall units resist and transfer loads from other elements and cannot be removed without affecting the strength or stability of the building. <]>> One of the concrete wythes may be a standard shape, such as a flat slab, hollow-core section, double tee, or any custom architectural concrete section. Precast concrete insulated Thermowall ® panels provide a functional and aesthetic wall system. startxref The concrete used in precast panels should be designed to be durable in the environment in which it will be used. If a sealer or concrete coating has been used for aesthetics or to minimize moisture penetration into the panel, the sealer or coating will require reapplication. 0000002454 00000 n Prestressed concrete wall panels, are a versatile product which can be used to store and retain a wide variety of materials. to enhance the durability of the concrete. 0000001616 00000 n See the tables for guidance by wall system type for climate-specific considerations that are imperative to the success of any enclosure design. Joints between panels are most commonly sealed with sealant to prevent water penetration in the wall cavity. The following details can be downloaded in DWG format or viewed online in DWF™ (Design Web Format™) or Adobe Acrobat PDF by clicking on the appropriate format to the right of the drawing title. 0000009848 00000 n Review load tables, details and specs of Spancrete wall panel building systems for use in specifications for an upcoming project. This paper presents building science details for architectural precast concrete sandwich panels and analyzes the details to illustrate the principles involved. These units can usually be removed individually if necessary. Steel elements of a wall system are designed in accordance with AISC specifications for steel construction. Graphic Concrete technology used by Spancrete transfers patterns and colors onto precast slabs, leaving behind a customized piece of art that is 100% concrete, durable and maintenance-free. In fact, for high-rise buildings precast concrete panels can pose a serious safety hazard when a fire occurs that damages the panel connections and causes a panel to then fall from the building. High quality posts and slabs providing a stronger, lighter support for pre-cast walls. 0000002652 00000 n Insulated precast concrete wall panels can be created as a complete system that includes insulation and a moisture barrier as well as an exterior membrane and interior finish. The goal of 'Whole Building' Design is to create a successful high-performance building by applying an integrated design and team approach to the project during the planning and programming phases. Panel cracking, displacements, or other distress conditions can occur at locations where anchors are inadequately or improperly connected. Fabcon nearly reinvented the category in 2001 with the introduction of VersaCore panels. Deck Bearing Detail; Joist Bearing; Slotted Non-Bearing; Spandrel-to-Column Connection; Top of Panel Bearing; Foundation-to-Footing Connection 1; Foundation-to-Footing Connection 2 Common cladding units include wall panels, window wall units, spandrels, mullions, and column covers. 0000025036 00000 n We’re also the only authorized distributor of Superior Walls of Alberta. In this article, we discuss about the types, connections, characteristics, and advantages […] Innovative Solutions for the Built Environment Poor construction is often the result of poor quality control and out of tolerance fabrication or erection of the panels. On the “Download Details” pages are Litecrete attachment details which have been developed to cope with typical panel installations. The panels consist of two conventionally reinforced or prestressed concrete wythes with a continuous layer of rigid insulation (typically extruded polystyrene) sandwiched between the two wythes. Because services outlets are cast into wall panels, sound transmission weakness around switches and power outlets is avoided and transmission through cavities or air spaces is prevented. This 30-min webinar is dedicated to precast wall panels.Modeling these elements is a time consuming job, and we need to find ways to minimize excess effort as much as we can. Cladding or curtain walls 2. It is main reason to becoming very popular. Film-forming coatings usually offer a higher level of performance but will have a significant impact on the appearance of the precast concrete unit. Precast panels with differing depths of surface profiling also require more care in maintaining sufficient concrete cover over the embedded reinforcing steel. 751 0 obj<> endobj In place, sandwich wall In addition to a precast concrete mix meeting the requirements and recommendations of ACI 318, evaluation and study of the historic performance of a particular concrete mix in a similar exterior environment can also be performed. Superior Walls precast concrete foundations are the best solution for residential builders looking for reliable scheduling, efficient one-day installation, ready to finish convenience, energy code performance, and a manufacturer’s limited warranty. • Precast concrete has unsurpassed fire ratings, readily Precast concrete panels can be manufactured as a sandwich wall or single skin construction, in a range of decorative finishes and colours. 0 The most important maintenance item for precast panels is the sealant in joints and protection system, if used. Guide for Precast Concrete Wall Panels. Sealers can be either clear or pigmented if used as an enhancement of the precast appearance. Shear walls 4. Load-bearing wall units 3. Read More. The following technical drawings cover the use of precast concrete wall panels. Each of these finishes presents a different challenge in producing a durable precast concrete panel. With over 40 years’ experience, few companies can compare when it comes to precast concrete security fencing. Important links. Unlike block walls, precast concrete is poured into specific forms beforehand, then delivered for a quicker install than conventional on-site construction. 0000012647 00000 n WEBINAR: Precast Concrete – Walls. In summary, the more complicated the appearance of a precast concrete panel, the more challenging and important the review and approval process and quality control program. As a full-service and design-build company, we provide our customers with the most reliable, reputable and aesthetically pleasing solutions in the industry. The time frame for the sealant and surface protection systems varies widely but usually ranges from every 7 to 20 years. However, distressed and open joints between panels can provide a condition in which sound transmission to the interior may be increased. Precast concrete walls are constructed by casting concrete in a reusable wall mold or form which is then cured in a controlled environment, transported to the construction site and lifted into place. 0000002488 00000 n Installation of the concrete panels is quick and easy, the elements can either be positioned into the web of a steel column, or clipped to the outside face. Often the finish will include the abrasion or modifying of the surface by sandblasting, exposing aggregate, acid washing, bush-hammering, or other techniques. WBDG is a gateway to up-to-date information on integrated 'whole building' design techniques and technologies. 0000005889 00000 n Architectural Precast Window Jamb and Sill   DWG |  DWF |  PDF, Architectural Precast Round Penetration   DWG |  DWF |  PDF, Architectural Precast Square Penetration   DWG |  DWF |  PDF, Architectural Precast Interface Between Vertical and Horizontal 2-Stage Joint   DWG |  DWF |  PDF, Architectural Precast Window Head and Jamb   DWG |  DWF |  PDF. O’ Reilly Concrete Pre-Cast Concrete Wall Panels Advantages of Precast: • Wall panels are constructed off-site regardless of weather conditions ard are rapidly assembled on site. The concrete panels are designed in accordance with PCI Design Handbook-Precast and Prestressed Concrete (MNL-120), Design Responsibility for Architectural Precast Concrete Projects (ACI 533.1R-02), and ACI 318 Structural Concrete Building Code. ACI 318 specifies various criteria for acceptance of a concrete mix. If necessary, freeze-thaw testing can also be conducted in accordance with ASTM C666. In some cases, precast panels are used as formwork for cast-in-place concrete. In some cases, precast panels are used as formwork for cast-in-place concrete. Precast panel detailing stands for the accurate detailing of concrete panels that is produced by the casting concrete in a reusable mold or "form". 0000005098 00000 n %PDF-1.4 %���� 0000048113 00000 n Products include: commercial retaining walls, residential walls, sea walls, mechanically stabilized earth panels, modular block systems, segmental retaining walls, etc. Most typically the precast concrete wall system must resist lateral loads directly imparted on it, such as from wind and earthquake; as well as vertical loads resulting from the self weight of the precast wall system. Competitive cost: Precast concrete wall panels can be a cost-effective alternative to masonry or other hard wall systems and does not require as much labor as other systems. The main function of the precast walls is to speed up the construction process. The primary purposes of the connection are to transfer load to the supporting structure and provide stability. This in turn can reduce the size of HVAC units needed. Precast concrete wall systems can be comprised of a variety of shapes, and wall types. It is reusable, cost cutter and saving space also. trailer A precast panel with a highly architectural surface will present challenges in development of a concrete mix and placement of reinforcing steel. These types of precast concrete panels do not transfer vertical loads but simply enclose the space. The precast concrete panel should also be designed to provide the appropriate level of durability for the planned exposure. 0000006625 00000 n Some precast panels act as column covers while others extend over several floors in height and incorporate window openings. Since then Fabcon has refined and re-engineered panel performance profiles to match the needs of our customer. Symposium on Precast Concrete Wall Panels. 0000003305 00000 n The structural engineer designs the structure to hold the cladding, designates connection points, and evaluates the effects of structural movement on the cladding. At Wells Concrete, we are a team of precast innovators and dedicated professionals ready to provide the highest-quality products and services to each project carrying our name. • As a result projects are completed sooner, leading to earlier occupancy and faster revenue returns. Typically, precast concrete wall systems fall into three basic categories: solid, sandwich and thin-shell.These can be panelized and erected in either a horizontal or vertical position and used on all types of structures, from residential to commercial, and institutional to industrial. The precast panels act as a form, providing the visible aesthetics of the system, while the cast-in-place portion provides the structural component of the system. Contact Details. There are generally four types of precast panels used as part of building envelopes: Precast cladding or curtain walls are the most common use of precast concrete for building envelopes. Used in conjunction with ASHRAE 90.1, a building’s thermal performance can actually double using precast wall elements. Precast concrete provides manufacturers with the ability to produce a wide range of engineered earth retaining systems. ACI Publication SP-11 (1965): 19-28. After a test sample is hardened and tested, workers pour it into pre-made molds. Precast concrete can be used in environments that allow the use of conventional cast-in-place concrete. 751 27 They are only designed to resist wind, seismic forces generated by their own weight, and forces required to transfer the weight of the panel to the support. The effectiveness of precast shear walls is largely dependent upon the panel-to-panel connections. Modeling and Documentation in Revit® Welcome everyone to the second webinar we are hosting in our Precast Concrete series! Precast concrete products: the superior option. 1090 Vermont Avenue, NW, Suite 700 | Washington, DC 20005-4950 | (202) 289-7800 %%EOF Precast Concrete Security Fencing Solutions. 0000003666 00000 n Joints around each of the precast panels are usually filled with sealant. 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