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This book is devoted to learning how to produce an economical concrete mix that meets the requirements for place ability, consistency, strength, durability and appearance. Development of mix design method plays a key role in concrete technology. It involves the process of determining the most suitable concrete mixes in order to achieve maximum strength with least economic expenditures. The standard adopted for carrying out the concrete mix design with and/or without admixture is ACI 211.1. Concrete is an extremely versatile building material because, it can be designed for strength ranging from M10 (10 MPa) to M100 (100 MPa) and workability usually ranging from 0 mm slump to 150 mm slump. In all these cases the basic ingredients of concrete are the same, but it is their relative proportioning that makes the difference. The anti-permeability of concrete is one of important indexes of the durability of the concrete. The tests for determining the concrete anti-permeability performance and requirements for mix design of anti-permeable concrete have also been discussed in detail. Comprehensive literature on concrete mix design with examples and laboratory tests is the theme of this book.
This Design Specification provides material, design, and construction requirements for concrete silos, stave silos, and stacking tubes for storing granular materials, including design and construction requirements for cast-in-place or precast and conventionally reinforced or post-tensioned silos.Silos and stacking tubes require design considerations not encountered in building structures. While this Design Specification refers to ACI 318 for several requirements, static and dynamic loading from funnel, mass, concentric, and asymmetric flow in silos; special loadings on stacking tubes; and seismic and hopper bottom design are also included.
This Standard defines requirements that may be used to design special hybrid moment frames composed of discretely jointed precast concrete beams post-tensioned to concrete columns. After a major earthquake, these hybrid moment frames should exhibit minimal damage in beam-column regions and negligible permanent displacements. Hybrid moment frames do not satisfy the prescriptive requirements of Chapter 21 of ACI 318M-11 for frames of monolithic construction. According to 184.108.40.206 of ACI 318M-11, their acceptance requires demonstration by experimental evidence and analysis that the frames have strength and toughness equal to or exceeding those provided by comparable monolithic reinforced concrete frames that satisfy the prescriptive requirements of Chapter 21. This Standard describes the requirements that the licensed design professional may use to demonstrate, through analysis, that such frames have strength and toughness at least equal to those of comparable monolithic frames. This Standard is a revision of the ACI T1.2 Standard.In this Standard, consistent with the format of ACI 318M, the word “Section” is not included before a reference to a section of ACI 318M. To more clearly designate a section of this Standard, however, the word “Section” is used before any reference to a section of this Standard. Consistent with the format of ASCE/SEI 7, the word “Section” is also included before a reference to a section of ASCE/SEI 7.
Insulating concrete forms (ICFs) are leave-in-place forms typically produced in block or panel shapes of expanded polystyrene (EPS). They provide additional components, such as insulation and a substrate for interior and exterior finish attachment, for a wall or floor system. The most widely used ICFs are block shapes, which are stacked in an interlocking fashion to create stable formwork for creation of reinforced concrete walls. Due to the variability of these manufactured form systems, this report does not attempt to address every ICF type, but provides a commentary on those systems most prevalent in the market, and insight, as well as additional information, relative to their use in design and construction. The report focuses on ICFs for walls.
This guide presents recommendations for materials, analysis, design, and construction of concrete-pedestal elevated water storage tanks, including all-concrete and composite tanks. Composite tanks consist of a steel water storage vessel supported on a cylindrical reinforced concrete pedestal.Concrete-pedestal elevated water storage tanks are structures that present special problems not encountered in typical environmental engineering concrete structures. This guide refers to ACI 350 for design and construction of those components of the pedestal tank in contact with the stored water, and to ACI 318 for design and construction of components not in contact with the stored water. Determination of snow, wind, and seismic loads based on ASCE/SEI 7 is included. These loads conform to the requirements of national building codes that use ASCE/SEI 7 as the basis for environmental loads as well as those of local building codes. Special requirements, based on successful experience, for the unique aspects of loads, analysis, design, and construction of concrete-pedestal tanks are presented.
This guide presents information that expands on the provisions of ACI 318 applied to the design of site-cast precast, or tilt-up, concrete panels, and provides a comprehensive procedure for the design of these important structural elements. In addition, this guide provides design recommendations for various support and load conditions not specifically covered in ACI 318, including design guidelines for in-plane shear.
Fiber-reinforced polymer (FRP) materials have emerged as an alternative for producing reinforcing bars for concrete structures. Fiber-reinforced polymer reinforcing bars offer advantages over steel reinforcement because they are noncorrosive. Some FRP bars are nonconductive as well. Due to other differences in the physical and mechanical behavior of FRP materials versus steel, unique guidance on the engineering and construction of concrete structures reinforced with FRP bars is necessary. Other countries and regions, such as Japan, Canada, and Europe have established design and construction guidelines specifically for the use of FRP bars as concrete reinforcement. This guide offers general information on the history and use of FRP reinforcement, a description of the unique material properties of FRP, and guidelines for the design and construction of structural concrete members reinforced with FRP bars. This guide is based on the knowledge gained from worldwide experimental research, analytical work, and field applications of FRP reinforcement.
Bringing you the best surreal artwork for your phone and tablet from French artist Florent Bodart aka Speakerine! Florent is a graphic designer and illustrator who creates imaginative and fun illustrations that whisk you away to an alternate universe. We have you covered with the widest range of official Florent Bodart designed cases in the market!Refined style and protection. This stylish case suits any occasion whilst keeping your mobile device protected and functional. Its sleek hard-shell shows off the slim profile of your device, whilst allowing easy access to ports and sockets.Stand Out. Surround your device with quality designs that demand attention.Secure Style. Durable polycarbonate shell provides lightweight protection from daily wear and tear.Scratch Resistant. Raised lip design protects the front screen and edges from scuffs and scratches.A Snap to Install. Single piece body design locks in protection in a simple snap. Swapping between multiple cases is as easy as changing into your favourite T-shirt!Official Florent Bodart productStylish, scratch resistant, high resolution printed graphicsHard-Shell Polycarbonate Material protects from scratches, drops, and dustSlim, lightweight construction easily slides in and out of pocketsRaised front edge helps protect against screen scrapes if you place your mobile device facedownFull access to all device ports and featuresOne-piece construction locks in protection with a single snapFor Motorola Moto E4:**This case fits Motorola Moto E4 XT1766, XT1763 version and does not fit Motorola Moto E4 USA version.For Motorola Moto E4 Plus:**Disclaimer: This case fits Motorola Moto E4 Plus XT1770, XT1773 version and does not fit Motorola Moto E4 Plus (USA) version.
The world's first no-tie silicone shoelace? Silicone laces are the world's first no-tie silicone shoelace which provides an easy-to-use, comfortable and stylish addition to any shoe! Silicone is a kind of material with flexibility and durability.Unique grip design, can bear greater tension, so that the shoe laces is difficult to separate from the holes. silicone shoelaces are waterproof and don't get wet in the rain or snow. When they get dirty, simply wipe them off with a wet cloth and they will look brand new! Easy to lace, and needn't to tie once lacing on, once and for all! The very flaxible shoe laces will adjust its tightness so that you don't need to worry the size will not fit you. No more your silly glazed shoelaces! By simply changing out your regular shoelaces with silicone laces on any pair of footwear, you will notice an immediate improvement in the look, fun, functional and fashionable addition to your footwear! 16 Pcs shoelaces in 8 different sizes for your choose! 16 Pcs shoelaces in 8 different sizes will provide a comfortable fit for any size footwear.You may tie your shoes to different patterns as you like! Size: approx. 3.8, 4.3, 4.8, 5.0, 5.5, 5.8, 6.3, 6.8cm Usage:Sneaker, Board Shoes, Sandals, Casual Shoes and so on. Multi-color to choose: Mix Colors, White, Yellow, Green, Blue, Purple, Dark Blue, Orange, Pink, Red, Gray, Brown, Black. Package include:1 set (16 pcs) shoelaces
One finger stapling power. Spring-powered stapling in a traditional desktop design. Ergonomic styling with a non-slip rubberized handle and base. Stands vertically and horizontally. Drop-in loading. Works with standard staples. Includes one rack of staples.
This angle degree indicator is made of high quality material. It has fine workmanship and professional design and can provide you with instant display. A great choice for you. Features: Made of high quality plastic material, this product is sturdy and durable. Characterized by fine workmanship and professional design, providing you with instant display. Suitable for common rifle scopes with 30mm/1.2"and 25.4mm/1" diameter oscilloscope tubes. Lightweight and portable, easy to install and use. A great choice for all users. Specification: Condition: 100% Brand New Item Type: Angle Degree Indicator Material: Plastic Fitness: For Common Rifle Scopes with 30mm/1.2"and 25.4mm/1" Oscilloscope Tubes Size: Approx. 68 * 34 * 49mm / 2.7 * 1.3 * 1.9inch Weight: Approx. 85g / 3.0oz Package List: 1 * Angle Degree Indicator 1 * Wrench
Features : Fits common scopes with 30mm/1.18" and 25.4mm/1" diameter scope tubes. This precision-machined ADI/ACI gives you an instant display. Specification : Material: Aluminum Alloy + Engineering Plastics Color: Black, Tan Size: 61.7mm x 46.6mm x 17.7mm/2.43"x 1.83"x 0.69" Package includeds : 1 x Scope Spirit Level 1 x Wrench
Bonds directly to the nail as a protective barrier;Contains Keratin a fundamental component of nails;Creates a protein-rich coating;Adds measurable thickness;Instantly strengthens, hardens and reinforces weak nails.