6 of the Best WordPress Email Marketing Plugins Compared

Looking for the best WordPress email marketing plugins? In this post, well feature six great options and help you decide which plugin is right for you. SendinBlue Subscribe Form And WP SMTP Author(s): SendinBlueCurrent Version: 2.9.8Last Updated: August 21, 2019mailin.zip 82%Ratings 380,114Downloads WP 4.4+Requires SendinBlue Subscribe Form and WP SMTP is the official WordPress plugin for the SendinBlue email marketing service. It lets you run all your email marketing efforts from right inside your WordPress dashboard.Key features:Build custom subscription forms, and embed them in posts, pages, or widget areasUse a drag-and-drop tool to create emails from scratch (or start from a template)Segment and automate your newsletters in a variety of waysView real-time statistics about your emails, such as clicks, opens, and so onWhat you’ll need to use it:In order to use this plugin, youll also need to use the SendinBlue email marketing service. You can get started with this service for free.Pricing:The plugin itself is free, and there’s a no-charge SendinBlue plan that lets you send up to 300 emails per day. Premium plans with higher limits start at $25 per month, the Lite version (40.000 emails / month), and go up to $39 for the Essential plan (60.000 emails / month). The Premium plan, $66 per month, offers 120.000 emails / month.Who should use it:Naturally, if youre already using the SendinBlue service, this is the plugin you want. It’s also one of the best WordPress email marketing plugins if you want a platform offering more than just the basics – including advanced segmentation and automation functionality.2. Email Subscribers Newsletters Email Subscribers Newsletters Author(s): IcegramCurrent Version: 4.2.3Last Updated: October 17, 2019email-subscribers.4.2.3.zip 92%Ratings 3,544,032Downloads WP 3.9+Requires If you’re looking for a full-featured solution, Email Subscribers Newsletters is one of the best Word Press email marketing plugins to start with. It provides everything you need to create and manage a list and send newsletters, without requiring a third-party connection.Key features:Add a subscription box to your site for collecting email addressesSend out email newsletters manually, or automatically based on specific triggersReceive notifications when new subscribers sign up and send out automated welcome emailsView email data, such as when each was sent and viewedWhat you’ll need to use it:Email Subscribers Newsletters makes use of your own server to send emails, so it doesn’t require any third-party subscriptions or additional tools.Pricing:Along with the free version, there’s a premium tier starting at $9 per month. This provides extra features such as email templates, built-in spam filtering, and the option to test newsletters.Who should use it:This plugin is an excellent option if you want a no-frills solution that you can manage straight from your websi te. It includes all the basics, is easy to pick up, and offers a decent amount of automation potential.3. Newsletter Newsletter Author(s): Stefano Lissa s installed on your WordPress site, you’ll immediately be able to start collecting emails and sending newsletters – no complex setup required.Key features:Collect email addresses via a customizable widget, page, or formCreate newsletters using a responsive drag-and-drop systemSegment your list to target different audiences with specific messagingUse a central status panel to configure the plugin and keep an eye on your campaignsWhat you’ll need to use it:You do not need any other tools or services to use this plugin, though it does give you the option of connecting to other SMTP plugins to help deliver your emails.Pricing:The base plugin is free, and there are a number of premium extensions to provide additional functionally. You can purchase these separately, or get them all for $76.59 for up to 3 websites o r for $298.60 for unlimited number of websites.Who should use it:Newsletter is one of the best WordPress email marketing plugins if you want to carry out targeted campaigns. While it offers fewer automation options than some tools, it provides a lot of segmentation potential.4. MailChimp for WordPress MC4WP: Mailchimp for WordPress Author(s): ibericodeCurrent Version: 4.6.1Last Updated: October 7, 2019mailchimp-for-wp.4.6.1.zip 96%Ratings 21,891,244Downloads WP 4.1+Requires This one connects your site to  Mailchimp – one of the most popular email marketing services available. If youre a Mailchimp user, this plugin will help you grow your list more effectively.Key features:Create custom sign-up forms and add them to your WordPress siteIntegrate with a wide variety of form builder and e-commerce pluginsView detailed reports about your campaigns (premium only)Send automatic notifications when new subscribers sign up (premium only)What you’ll need to use it:To us e this plugin, you’ll need to also use the Mailchimp email marketing service. Mailchimp offers a free plan that includes up to 2,000 subscribers and 12,000 emails per month. The paid tiers start at $10 per month, and prices scale with the number of subscribers you need.Pricing:As for the plugin itself, the free tier is very streamlined. It only enables you to create sign-up forms and add them to your site. If you want access to more functionality, you’ll need a premium license, which starts at $59 per year.Who should use it:This is one of the pricier options on our list of the best WordPress email marketing plugins. However, it also offers integration with one of the most feature-rich services available. It’s worth considering if you want an email marketing solution that enables you to create complex and highly-customized campaigns.Additionally, this is one of the best WordPress email marketing plugins if youre already using the Mailchimp service.5. MailsterMail ster is something of a halfway point between some of the options we’ve looked at so far. It’s a self-contained solution for WordPress, meaning that you don’t need a third-party service to use it. At the same time, it’s a premium-only plugin and offers a wider set of features than most free tools.Key features:Create emails using a library of templates and a drag-and-drop builderSet up customized automation, and send out emails based on specific trigger pointsManage and segment your email lists within WordPress itselfView detailed analytics on your emails and subscribers, via a centralized dashboardWhat you’ll need to use it:You won’t have to sign up for an external plan to use Mailster. At the same time, it’s compatible with many popular email sending services, such as SendGrid and Amazon SES. Integrating with these services is recommended as it will help you ensure your emails dont end up in spam.Pricing:As we mentioned, Mailster is a premium plugin. It will cost you $59 for a one-site license, updates, and six months’ worth of support.Who should use it:If you can afford the upfront cost, and you want a tool that will fully integrate with your WordPress site, Mailster is one of the best WordPress email marketing plugins to choose from. It’s highly customizable, compatible with a wide range of plugins and services, and easy to manage directly from your site.6. MailPoet MailPoet emails and newsletters in WordPress Author(s): MailPoetCurrent Version: 3.38.0Last Updated: October 15, 2019mailpoet.3.38.0.zip 92%Ratings 3,240,256Downloads WP 4.7+Requires MailPoet is a freemium plugin that integrates smoothly with your WordPress dashboard. You can create, schedule, and send emails right from your site, and manage your lists as well.Key features:Create a subscription form, and embed it wherever you like on your siteBuild emails either from scratch or by using a variety of starter templatesSet up mu ltiple subscriber lists, and manage them within WordPressSend automatic signup notifications and welcome emailsWhat you’ll need to use it:MailPoet can be used on its own, either by sending emails via your own server or a third-party service of your choosing. You can also sign up for a MailPoet sending plan, either free or premium.Pricing:The base plugin is free, and  there’s also a free plan that supports up to 1,000 subscribers and includes premium features for free such as all WooCommerce features and segmenting. If you want access to statistics and reporting features, you can get the premium plugin for $99. Alternately, you can pick up the premium version and MailPoet’s sending service in combination, starting at $13 per month (prices scale with subscriber count).Who should use it:Besides being a full-featured WordPress solution, MailPoet’s chief advantage is its scalability. You can start out with the free plugin and only pay for more features and r esources as you need them.Recapping the six best WordPress email marketing pluginsIf you have a WordPress site, you’ll want to use it as the ‘home base’ for your email marketing campaigns. With the right plugin, you can easily manage subscription form building, email creation, list management, analytics tracking, and more – right from your website.To recap, here are six of the best WordPress email marketing plugins you may want to try:SendinBlue Subscribe Form and WP SMTP: A WordPress plugin that connects your site to the SendinBlue service.Email Subscribers Newsletters: An easy-to-use, no-frills solution with plenty of automation options.Newsletter: An excellent choice for targeted campaigns and list segmentation.MailChimp for WordPress: A tool for connecting your site to Mailchimp, enabling you to build forms, view analytics, and so on.Mailster: A premium-only plugin that provides a fully-featured email marketing solution with lots of features.MailPoet: A highly-scalable option with both free and premium tiers, along with optional sending plans.Have any questions about these plugins? Ask away in the comments and well try to help! Email marketing on #WordPress? Check out these 6 great #email #marketing #plugins

Evolution vs Religion essays

Evolution vs Religion essays Charles Darwins introduction of evolution, created the battle between evolution and religion. Still, to this day, the influence of Darwinism has people asking themselves where they came from. God, a higher spirit, or the process of evolution, are the two main choices to pick from. For many years, God was the predominant answer, but after the ideas of Darwin, scientists have taken the task to trace humans back to the beginning of existence and try to give a scientific explanation. Obviously, since no one really knows for certain what happened that resulted in the creation of man, it can only be determined on a personal basis; through religious beliefs and educated guesses. Its quite clear that without the influence of Darwinism, there would be no controversy. However, there doesnt have to be a controversy. The creation of man should be thought of as a combination of God and evolution. Before the thoughts of Darwin, most people concluded that their must have been a higher creator who had placed them on earth. So, for many years, they worshiped God tenaciously, and to this day some people still do. To change such an idea that has existed for so many years is hard to accomplish. Therefore, Darwins theory was considered outrageous. According to Steve Jones, in his book, Darwins Ghost, in 1991 a hundred million Americans believed that during the last ten thousand years, man was created by God the way he is now. Man wasnt created from a previous specie ( 1). Its most likely that there was a higher spirit that created the existence of life. It explains how the world began. If you sit and think about it enough, its frightening to consider that there could, possibly, never have been anything at all; just an empty space of nothing, with no living mammals, insects, trees, grass, or clouds. However, the fact that humans, along with the othe ...

2. What were the greatest achievements of the Italian Renaissance Essay

2. What were the greatest achievements of the Italian Renaissance Explain your answer with reference to at least three works of art or literature - Essay Example Artists such as Leonardo da Vinci, Raphael, and Michelangelo thrived during this period, their works being considered masterpieces to this day. The works of the trio form the backbone of the Italian Renaissance and some of these shall be considered in this essay. One of the best-known works of the Italian Renaissance, and what can be considered one of its best accomplishments, is the fresco The Triumph of Galatea. This is a masterpiece by Raphael, which he painted for the Villa Farnesina, and is based on Greek mythology (Bruce 346). It is a depiction of how the Nereid Galatea became involved in a love situation with a shepherd. While this fresco is based on the mythology, it depicts a sight where Galatea is surrounded by humanoid sea creatures. This fresco is deemed one of Raphael’s supreme masterpieces whose meaning has been subject to speculation for a long time. The second, and perhaps the most well-known, work of art of this period is Mona Lisa, by Leonardo da Vinci. This painting is not only famous, but many books, songs, and poems have been written concerning it. This is because of the famed mystery, which the painting seems to carry with it. People who have visited it or viewed it have often wondered what da Vinci’s inte ntion for painting it was. While some people believe that it is just a regular painting, others have come up with theories concerning it, including that it holds a revered religious secret. The topic of the painting has an indistinct expression on her face. This expression has kept people interested in the painting for a long time, as each attempt to decipher its true meaning (McMullen). Art scholars continue to study it as ever-increasing theories, and myths develop around it. One of the most renowned pieces of art from the Italian Renaissance is the statue David, a monument by the sculptor Michelangelo, which is a representation of Biblical David, who was a favorite subject of Florentine artists, standing nude

Leading Global Workforce Assignment Example | Topics and Well Written Essays - 500 words - 1

Leading Global Workforce - Assignment Example Caligiuri, Lepak and Bonache (2010) point out, since most of the modern organizations operate with a global view, they think that maintaining a culturally diverse workplace environment is essential to accomplish their long term objectives (p.na). A global recruitment approach can really benefit the organizations to access human talent and professional expertise effectively. The firms may rely on their permanent employees to perform managerial tasks and other crucial organizational tasks whereas they may use contingent workers to do their less important or monotonous nature of work. According to Stickney (2008, p.35), cost saving is the major benefit of using contingent workers because organizations do not need to pay temporary workers for downtime. In addition, companies do not want to offer benefits such as vacation time, holiday pay, sick leave, and health insurance to temporary workers. Another advantage is that it provides organizations with a broad talent pool from which they can select during special projects with a short deadline. According to Denisi and Griffin (2005, p.548), decreased loyalty and productivity may be the major demerits of using contingent workers as these people depend on a number of employers to earn income. High training costs is another risk of this employment strategy because contingent professionals are less likely to work for a single organization in the long term. In order to consider contingent work as beneficial and practical, employers’ and employees’ viewpoints and notions of work and career need to be changed. First, employers should understand that contingent workers can contribute significantly to the organizational productivity even if they work for a temporary period. In addition, they should not consider the training costs for contingent workers as non-productive spending. Likewise, employees should not think that contingent workers would threaten their job but identify the supporting role the contingent professionals

DNA & The Judicial System Essay Example | Topics and Well Written Essays - 1250 words

DNA & The Judicial System - Essay Example Evolution of DNA technology to solve criminal cases is not a new phenomenon. Media has extensively popularized the concept of DNA technology and its role in the fight against crime and injustice. This extensive coverage is not just for the mere reason that the technology is relatively new in the judicial system, but because of its peculiar accuracy in convicting or exonerating suspects. Legislation has been a major issue in the application of DNA technology. These stem from incessant use of the technology in data banking to using DNA tests in post-conviction tests. Originally, the test was developed solely for determining paternity of children. Samples taken under clinical conditions were studied for genetic evidence linking parents to children. The maiden time DNA technology made its way into the judicial system was in 1986. Police in England asked a molecular biologist and researcher, Alec Jeffreys to use DNA tests to verify the validity of 17 year old boy in two cases of sexual as sault in the English Midlands. The twist in the test results that proved the boy to be innocent of the offenses, and a later conviction of the real perpetrator using the same DNA test made DNA testing a technology to revere in the judicial system. In 1987, the first DNA-based conviction took place in the United States. Tommy Lee was convicted in Circuit Courts, Florida within the Orange County for rape. The DNA test on samples of semen collected from a victim matched his DNA construct. This did not, however, change the public and judicial mindset did not take immediate effect until a high court ruled in favor of DNA test. In 1989, the state high court of West Virginia ruled in favor of DNA sample tests on a rape case.... The DNA test on samples of semen collected from a victim matched his DNA construct. This did not, however, change the public and judicial mindset did not take immediate effect until a high court ruled in favor of DNA test. In 1989, the state high court of West Virginia ruled in favor of DNA sample tests on a rape case (Lazer, 2010). The first years of the ground-breaking use of DNA in administering justice did not attract dispute and public uproar. This, however, changed as the technique became more widely used by prosecutors. Defense attorneys began challenging and disputing the admissibility of DNA tests as grounds of administering justice. Admissibility of a new technology in judicial system is determined using two universally agreed standards. These are the Daubert Standard and the Frye Standard. The first standard of admissibility, Daubert Standard originates from 1993 case of Daubert v Merrel Dow Pharmaceuticals. The court ruled during this famous legal tussle that evidence and proof must possess enough scientific reliability and validity to be admitted as relevant scientific knowledge which would be used to assist the trier of facts (Yang, 2011). The earlier standard named Frye Standard is based in a 1923 case of Frye v United States. During this important ruling, the court pronounced that in order for a novel scientific technology to be admissible, scientific evidence must be thoroughly established to have acquired general acceptance in the field that it belongs. Considering the two standards of admissibility of technology, it would be level-minded to conclude that DNA technology meets the criteria of determining admissibility. The technology belongs to the field of medicine and clinical practices (Ze-Lian & Drew, 2008). Prior to its usage in the

The Precast Concrete Piles Engineering Essay

The Precast Concrete Piles Engineering Essay 2.1 introduction 2.1.1 Introduction of pile Piles are the very common elements in a foundation. Pile foundation have the function that transfer loads from superstructure through through water or through the weak compressible strata, onto rock, less compressible soils or onto stiffer. This type of foundation need to carry uplift loads when it is used to support tall structures. Not only that, it is also to overturning the forces from winds or waves. Thus, piles used in marine structures are also the subjected to lateral loads from the waves and impact of berthing ships. The combinations of horizontal and vertical loads are to carry where the piles are used to support, bridge piers and abutments, retaining walls and machinery foundations. In the late of nineteenth years, reinforced concrete was developed as a structural medium. This is the replacement of timber for high-capacity piling of works into soil on land. This can be precast in structural forms and also suitable for ground conditions and the imposed loading. The durability of pile was satisfactory for immersion conditions and most of the soil. Replacement of the driven of precast concrete of cast in-situ piles had due to most of the development of highly efficient machines. This is for drilling pile boreholes of rock conditions, great depth in wide range of soil and the large diameter of pile than to other deficiency in performance of the precast concrete element. Steel is used to increase when extension for pile due to ability to withstand hard driving, handling, to its ease of fabrication. The corrosion problem in marine structures have had solved by the introduction of cathode protection and durable coatings.(Michael Tomlinson, 2008) 2.1.2 Type of pile 2.1.2.3 displacement piles Precast concrete pile Precast concrete piles have their principal use in marine and river structures, i.e. in situations where the use of driven and cast-in-place piles is impracticable or uneconomical. For land structures unjoint precast concrete piles are frequently more costly than driven and casting- place types for two main reasons: 1. Reinforcement must be provided in the precast concrete pile to withstand the bending and tensile stresses which occur during handling and driving. Once the pile is in the ground, and if mainly compressive loads are carried, the majority of this steel is redundant. 2. The precast concrete pile is not readily cut down or extended to suit variations in the level of the bearing stratum to which the piles are driven. However, there are many situations for land structures where the precast concrete pile can be more economical. Where large numbers of piles are to be installed in easy driving conditions the savings in cost due to the rapidity of driving achieved may outweigh the cost of the heavier reinforcing steel necessary. Reinforcement may be needed in any case to resist bending stresses due to lateral loads or tensile stresses from uplift loads. Where high-capacity piles are to be driven to a hard stratum, savings in the overall quantity of concrete compared with cast-in-place piles can be achieved since higher working stresses can be used. Where piles are to be driven in sulphate-bearing ground or into aggressive industrial waste materials, the provision of sound high-quality dense concrete is ensured. The problem of varying the length of the pile can be overcome by adopting a jointed type. From the above remarks it can be seen that there is still quite a wide range of employment for the precast concrete pile, particularly for projects where the costs of establishing a precasting yard can be spread over a large number of piles. The piles can be designed and manufactured in ordinary reinforced concrete, or in the form of pre-tensioned or post-tensioned prestressed concrete members. The ordinary reinforced concrete pile is likely to be preferred for a project requiring a fairly small number of piles, where the cost of establishing a production line for prestressing work on site is not justifiable and where the site is too far from an established factory to allow the economical transportation of prestressed units from the factory to the site. Precast concrete piles in ordinary reinforced concrete are usually square or hexagonal and of solid cross-section for units of short or moderate length, but for saving weight long piles are usually manufactured with a hollow interior in hexagonal, octagonal, or circular sections. The interiors of the piles can be filled with concrete after driving. This is necessary to avoid bursting where piles are exposed to severe frost action. Alternatively, drainage holes can be provided to prevent water from accumulating in the hollow interior. To avoid excessive flexibility while handling and driving the usual maximum lengths of square section piles, and the range of working loads applicable to each size are shown in table 2.1 . Where piles are designed to carry the applied loads mainly in end-bearing, for example, piles driven through soft clays into medium-dense or dense sands, economies in concrete and reductions in weight for handling can be achieved by providing the piles with an enlarged toe. This is practised widely in the Netherlands where the standard enlargements are 1.5 to 2.5 times the shaft width with a length equal to or greater than the width of the enlargement. Table 2.1 Working loads and maximum lengths for ordinary precast concrete piles of square section Jointed precast concrete piles The disadvantages of having to adjust the lengths of precast concrete piles either by cutting off the surplus or casting on additional lengths to accommodate variations in the depth to a hard bearing stratum will be evident. These drawbacks can be overcome by employing jointed piles in which the adjustments in length can be made by adding or taking away short lengths of pile which are jointed to each other by devices capable of developing the same bending and tensile resistance as the main body of the pile. BS EN 12794 defines pile joints in four classes, Class A to Class D, depending on whether the pile is used in compression, tension, or bending and the impact load test to be applied to verify the static design calculations. If the pile joint satisfies the impact and bending tests then the ultimate capacity of the joint is identical to the calculated static bearing capacity. Annex ZA to this standard deals with the CE marking of foundation pile units and the presumption of fitness for the intended use. The Hercules pile, originally developed in Sweden, is available in the UK from Stent Foundations Ltd in two square sizes with standard lengths of 6.1, 9.2, and 12.2 m, and properties as shown in Table 2.6. C45/55 concrete is normally used. The precast concrete units are locked together by a steel bayonet-type joint to obtain the required bending and tensile resistance and a rock shoe incorporating an Oslo point seating pile into hard rock. A length is chosen for the initial driving which is judged to be suitable for the shallowest predicted penetration in a given area. Additional lengths are locked on if deeper penetrations are necessary, or if very deep penetrations requiring multiples of the standard lengths are necessary. Other types of jointed precast concrete piles include the Centrum pile manufactured and installed by Aarslef Piling in the UK using C40/50 concrete and rigid welded reinforcement cages in varying lengths from 4 to 18 m in square sections from 200 to 600 mm. Lengths greater than 4 m for the 200 and 250 mm sections can be jointed using a single locking pin driven horizontally into locking rings in the joint box (four locking pins for the larger sections), which are designed to provide a degree of pre-tensioning to the typical locking pin joint. Depending on the length, section, and joint used and the ground conditions, working loads up to 1200 kN in compression and 180 kN in tension are possible. RB precast square concrete piles made and installed by Roger Bullivant Ltd are available in four sizes with working load capabilities (depending on ground conditions) from 200 kN for the nominal 150 mm square section to 1200 kN for the 355 mm square pile, in lengths of 1.5, 3, and 4 m. The standard joint for the limited tensile and bending capability is a simple spigot and socket type bonded with epoxy resin with each pile length bedded on a sand/cement mortar. Special joints and pile reinforcement can be provided as needed to resist bending moments and tension forces. Precast concrete piles which consist of units joined together by simple steel end plates with welded butt joints are not always suitable for hard driving conditions, or for driving on to a sloping hard rock surface. Welds made in exposed site conditions with the units held in the leaders of a piling frame may not always be sound. If the welds break due to tension waves set up during driving or to bending caused by any deviation from alignment, the pile may break up into separate units with a complete loss of bearing capacity. This type of damage can occur with keyed or locked joints when the piles are driven heavily, for example, to break through thin layers of dense gravel. The design of the joint is, in fact, a critical factor in the successful employment of these piles, and tests to check bending, tension, and compression capabilities should be carried out for particular applications. However, even joints made from steel castings require accurate contact surfaces to ensure that st ress concentrations are not transferred to the concrete. The Presscore pile developed and installed by Abbey Pynford plc is a jointed precast concrete pile consisting of short units which are jacked into the soil. The concrete in the pile units and precast pile cap is 60 N/mm2 and a reinforcing bar can be placed through the centre of the units of Presscore pile. On reaching the required bearing depth the annulus around the pile is grouted through ports in the units. The use of jacked-in piles for underpinning work is described in Chapter 9. A high strength cylindrical precast pile, 155 mm diameter and 1m long, was developed in Canada for underpinning a 90-year-old building in Regina. The segments were cast using steel fibre reinforced concrete with a 28-day compressive strength of 90 N/mm2 and steel fibre content of 40 kg/m3. Each segment was reinforced with four steel wires (9 mm) welded to a steel wire circumferential coil. Recesses were provided at each end of the segment and stainless steel rods connected each segment to form the joint. Hydraulic jacks with a capacity of 680 kN reacted against a new pile cap and as each segment was jacked down the next segment was screwed and tensioned onto the connecting rod. The required 600 kN pile capacity was achieved at depths ranging from 11 to 13 m. Table 2.2Dimensions and properties of square section Hercules piles as manufactured Driven and cast-in-place displacement piles In the Cementation Foundations Skanska version of the withdrawal tube pile, the heavy wall section tube has its lower end closed by an expendable steel plate or shoe and is driven from the top by a five-tone hydraulic hammer. On reaching the required to level, as predetermined by calculation or as determined by measurements of driving resistance, the hammer is lifted off and a reinforcing cage is lowered down the full length of the tube. A highly workable self-compacting concrete is then placed in the tube through a hopper, followed by raising the tube by a hoist rope operated from the pile frame. The tube may be filled completely with concrete before it is lifted or it may be lifted in stages depending on the risks of the concrete jamming in the tube. The length of the pile is limited by the ability of the rig to pull out the drive tube. This restricts the length to about 20 to 30 m. Pile diameters range from 285 to 525 mm with working loads up to 1500 kN. In a further variation of the Franki technique, the gravel plug (or dry concrete plug) can be hammered out at several intermediate stages of driving to form a shell of compact material around the pile shaft. This technique is used in very soft clays which are liable to squeeze inwards when withdrawing the tube. Composite Franki piles are formed by inserting a precast concrete pile or steel tube into the driving tube and anchoring it to the base concrete plug by light hammer blows. The drive tube is then withdrawn. A full-length reinforcing cage is always advisable in the driven and cast-in-place pile. It acts as a useful tell-tale against possible breaks in the integrity of the pile shaft caused by arching and lifting of the concrete as the tube is withdrawn. BS EN 12699 requires minimum reinforcement of 0.5% of the pile cross-section or four 12 mm diameter bars over the top 4 m of all such piles; with minimum cover of 50 mm where the casing is withdrawn, 75 mm where reinforcement is installed after concreting (or where subject to ground contaminants), and 40 mm where there is permanent lining. The problem of inward squeezing of soft clays and peats or of bulging of the shafts of piles from the pressure of fluid concrete in these soils is common to cast-in-place piles both of the driven and bored types. A method of overcoming this problem is to use a permanent light gauge steel lining tube to the pile shaft. However, great care is needed in withdrawing the drive tube to prevent the permanent liner being lifted with the tube. Even a small amount of lifting can cause transverse cracks in the pile shaft of sufficient width to result in excessive settlement of the pile head under the working load. The problem is particularly difficult in long piles when the flexible lining tube tends to snake and jam in the drive tube. Also where piles are driven in large groups, ground heave can lift the lining tubes off their seating on the unlined portion of the shaft. Snaking and jamming of the permanent liner can be avoided by using spacers such as rings of sponge rubber. In most cases the annulus left outside the permanent liner after pulling the drive tube will not close up. Hence, there will be no frictional resistance available on the lined portion. This can be advantageous because drag down forces in the zone of highly compressible soils and fill materials will be greatly reduced. However, the ability of the pile shaft to carry the working load as a column without lateral support below the pile cap should be checked. Allowable stresses on the shafts of these piles are influenced by the need to use easily workable self-compacting mixes with a slump in the range of 130 to 180 mm and to make allowances for possible imperfections in the concrete placed in unseen conditions. BS EN 12699 for driven displacement piles requires the rules on the concreting of bored piles using self-compacting concrete as recommended in BS EN 1536 to apply to all cast-in-place displacement piles unless otherwise specified. BS 8004 limits the working stress to 25% of the 28-day cube strengths, but BS EN 12699 specifies concrete strength classes of C20/25 to C30/37 which are 25% stronger than the cube strengths usually adopted in the UK under BS 8004, that is, a range of 20-30 N/mm2. EC2-1-1 Clause 3 refers to characteristic cylinder strengths for the determination of design compressive strengths, and if the 25% limit is applied the allowable stresses range from 5 to 7.5 N/mm2 (i.e. similar to the BS 8004 limits, but for the stronger mixes). For these values, allowable loads for piles of various shaft diameters are as shown in the following table: The higher ranges in the above table should be adopted with caution, particularly in difficult ground conditions. Maximum working loads are as shown in the following table: The spacing of bars in the reinforcing cage should give ample space for the flow of concrete through them. Bars of 5 mm diameter in the form of a spiral or flat steel hoops used for lateral reinforcement should not be spaced at centres closer than 100 mm (80 mm when using 20 mm aggregate). Replacement piles Bored and cast-in-place piles In stable ground an unlined hole can be drilled by hand or mechanical auger. If reinforcement is required, a light cage is then placed in the hole, followed by the concrete. In loose or water-bearing soils and in broken rocks casing is needed to support the sides of the borehole, this casing being withdrawn during or after placing the concrete. In stiff to hard clays and in weak rocks an enlarged base can be formed to increase the end-bearing resistance of the piles. The enlargement is formed by a rotating expanding tool. Hand excavation is now uneconomic because of stringent statutory health and safety regulations, even in piles with a large shaft diameter. A sufficient cover of stable fine-grained soil must be left over the top of the enlargement in order to avoid a run of loose or weak soil into the unlined cavity. Bored piles drilled by hand auger are limited in diameter to about 355 mm and in depth to about 5 m. They can be used for light buildings such as dwelling houses, but even for these light structures hand methods are used only in situations where mechanical augers. The versatile, light cable percussion tripod rigs can bore piles up to 600 mm diameter 10 m deep with working loads up to 1200 kN in suitable ground conditions. Temporary casing can be driven to cut off unstable ground and reinforcement inserted prior to concreting. Bored piles drilled by mechanical spiral-plate or bucket augers or by grabbing rigs can drill piles with a shaft diameter up to 7.3 m. Standard plate auger boring tools for use with kelly bar rigs range from 600 to 3650 mm. Rigs with telescopic kelly bars can reach 70 m depth and 102 m exceptionally. Under-reaming tools can form enlarged bases in stable soils up to 7.3 m in diameter. Rotary drilling equipment consisting of drill heads with multiple rock roller bits have been manufactured for drilling shafts up to 8 m in diameter. In a stable dry bore, concreting is carried out from a hopper over the pile with a short length of pipe to direct flow into the centre of the reinforcement, ensuring that segregation does not occur. When concreting boreholes under flooded conditions or under stabilizing fluid a full length tremie pipe (6 times the maximum diameter of the aggregate or 150 mm diameter whichever is the greater) is essential. For reasons of economy and the need to develop shaft friction, it is the normal practice to withdraw the casing during or after placing the concrete. As in the case of driven and cast-in-place piles this procedure requires care and conscientious workmanship by the operatives in order to prevent the concrete being lifted by the casing, and resulting in voids in the shaft or inclusions of collapsed soil. Reinforcement is not always needed in bored and cast-in-place piles unless uplift loads are to be carried (uplift may occur due to the swelling and shrinkage of clays). Reinforcement may also be needed in the upper part of the shaft to withstand bending moments caused by any eccentricity in the application of the load, or by bending moments transmitted from the ground beams. However, it is often a wise precaution to use a full-length reinforcing cage in piles where temporary support by casing is required over the whole pile depth. The cage acts as a warning against the concrete lifting as the casing is extracted. The need to allow ample space between the bars for the flow of concrete is again emphasized. 2.2 Procedure of driving precast pile and cast in-situ pile. 2.2.1 Driving precast concrete piles A helmet for precast concrete piles are carefully centered on the pile, and the hammer position should be checked to ensure that it delivers a concentric blow. The hammer should preferably weigh not less than the pile. BS 8004 requires that the weight or power of the hammer should be sufficient to ensure a final penetration of about 5 mm per blow unless rock has been reached. Damage to the pile can be avoided by using the heaviest possible hammer and limiting the stroke. BS 8004 states that the stroke of a single-acting or drop hammer should be limited to 1.2 m and preferably to not more than 1 m. The Swedish piling code requires a drop hammer to weigh at least 3 tonne, except that 2-tonne hammers can be used for piles with a maximum length of 10 m and a maximum load of 450 kN, but a 4-tonne hammer should be used for long piles in compact materials. This code recommends that the drop of the hammer should be limited to 300 to 400 mm in soft or loose soils to avoid damage by tensile stresses. The drop should be limited to 300 mm when driving through compact granular soils. The driving of the piles should be carefully watched, and binding by toggle bolts due to the pile rotating or moving off line should be eased. The drop of the hammer should be reduced if cracking occurs, and if necessary the hammer should be changed for a heavier one. After the completion of driving the pile heads should be prepared for bonding into the pile caps. Hollow piles with a solid end may burst under the impact of the hammer if they become full of water, and holes should therefore be provided to drain off accumulated water. Where a soil plug is formed at the toe of an open-ended pile, water accumulation or arching of the soil within the pile may also result in bursting during driving. The installation of withdrawable-tube types of driven and cast-in-place piles

Comparing Moby Dick, Ahabs Wife and Diary :: Comparison Compare Contrast Essays

A Comparison of Moby Dick, Ahab's Wife and Diary A story is composed of many parts, some necessary and some to add meaning. What are necessary are characters, a setting, a conflict, and a resolution. To add meaning an author may include complicated histories to their characters' lives, underlying themes, value within the setting, and surprising twists within the conflicts and resolutions. Because this outline is generally used throughout fictional stories, many, even if written in completely different genres and time periods, are alike and can be compared. This is because through technological and social changes, themes such as man vs. man, man vs. himself, man vs. nature, and man vs. society remain constant. Newer authors such as Chuck Palahniuk are considered post modern; he must create art in a world where everything that could possibly be original has already been created. Therefore he is expected to take what has been done and make it better. Thus, he combines themes from Moby Dick and Ahab's Wife to make Diary. Herman Melvill e wrote Moby Dick in the nineteenth century to narrate a story of a man who battles the world in search of himself. It is hinted that he left a wife behind and selfishly sacrifices his fellow humans because he can only see his one goal: capturing the white whale. Sena Jeter Naslund took the idea that Ahab had a wife and created Ahab's Wife (1999), which gives birth to many characters and similar themes. Most of this novel details Una's life before she met Ahab, but also includes her absent husband a great deal and illustrated their relationship while he is present as well as after he leaves. In both novels the inner turmoil of man dominates, creating similar backgrounds, lives, and goals for both Ahab and his wife Una. Chuck Palahniuk, a nouveaux shock fiction writer, also writes with man vs. himself (sometimes literally), man vs. society, and man vs. nature permeated throughout in order to create his novels. By combining character traits, settings, conflicts, and resolutions, one c an easily understand how, though the world has evolved, the underlying themes of fiction have not. Within the plots of the three novels there are many similarities. Diary is a fictional story written as a series of diary entries. Misty is keeping this diary as suggested by her comatose husband's mother; "It's what sailors and their wives used to do .