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מהנדס קרקע וביסוס מהנדסים גאו-טכניים יעוץ קרקע וביסוס Public Buildings "Professionals, clear, creative solutions for every challenge, every requirement was answered quickly and professionally. If I had to rate from 1 to 10, the score in all parameters would be 10. Following your advice, our savings in the project were hundreds of thousands of shekels" Elad Biton, Gedera Municipality Planning Department דף הבית / מבני ציבור / The rate of population growth in the State of Israel, combined with the construction boom in the settlements, creates a great need for the expansion of municipal infrastructure and the construction of many public buildings such as: schools, kindergardens, day care centers, community centers, etc. The local authorities invest a lot of money in these buildings, so it is important to get advice from a professional who will combine the quality of the foundation with the cost. Yuger's office has been working with authorities throughout the country for decades, and is known for its ability to find the optimal solution and save tens to hundreds of thousands of shekels in foundation costs. Selected projects - public buildings The Open University in Ra'anana The foundation of the university structure, which includes upper and underground parts in complex soil The project View More Hofim school Hadera A second opinion for a building with a total area of 9,000 square meters and a solution that significantly shortened the execution time The project View More Underground parking lot, Sha'arey Zedek Hospital, Jerusalem A foundation solution for the parking lot that includes monitoring the implementation and providing local solutions. The project View More

About site map Home / Site map / Home page about sectors Infrastructure and slopes Private residence Commercial and industrial buildings Public Buildings privet houses creative engineering projects Mothers Street in Tiberias Development of neighborhoods in Beit Shemesh Netanya Trio Towers Hadera beach front mall The Open University is fresh Hadera beach school Etz Ephraim detached building A private house in Ramat Hasharon A detached building in Kfar Shamariahu Residential complex in Arsov Construction evacuation project in Kfar Saba A residential building in Mevasherit Zion TMA 38/1 at Fayvel 12 Tel Aviv TMA 38/1 in Osishkin Tel Aviv Underground parking lot at Shaare Zedek Hospital Jerusalem Commercial building in Har Tov industrial area Haifa Chemicals South - industrial buildings and facilities Nesher Ramla factory El Matan neighborhood Maale Shomron Land Analysis Project - National Railway Development of Avni Hefetz neighborhoods Highway 16 Project planning the construction of bridges and portals for tunnels Lod Railway - construction of a training building, management building, train station, extension of platforms and bridges articles Choosing a land consultant A barge on stabilized ground using different techniques Requirements for registration as a land consultant in the land and foundation section The bridge over the Boho River Value engineering - reducing the cost of a construction project Land consultant Land and foundation consulting Soil stabilization - a network of underground rigid columns Ground anchors Land anchors in Israel - vision and reality The "Briga Towers" project by Yoger Consulting won the 2021 Construction Excellence Award soil drilling Soil drilling SPT contact

Choosing a land consultant At Eng. M. Yuger Ltd. we take the soil consulting and geotechnics profession seriously, that's why we chose to present you with a "grocery list" that will help you choose your soil consultant. In addition to the necessary academic studies, the graduate must register in the labor branch of the Ministry of Economy and Industry (formerly the Ministry of Labor and Welfare) in the "Soil and Foundation" section if he meets the following requirements. Of course, in order to meet the conditions for choosing a soil consultant, which is recommended here, it is important to first meet the basic requirement - registration in the soil and foundation section. Alternative A: studying relevant subjects Having a bachelor's degree in civil engineering and registered in structural engineering, who will prove that a person has studied and successfully passed the subjects according to the list below (for example as detailed in the Technion catalog), whether he studied at any recognized institution in Israel or abroad: The two subjects (prerequisite subjects given in the bachelor's degree): 014409 - Geomechanics 014411 - Soil engineering and the following professions: 019003 - Numerical methods for engineers 018420 - Advanced soil mechanics 018417 - Seepage and slope stability 019427 - Constructive laws in geomechanics 019430 - Foundation 018416 - Introduction to soil dynamics 018418 - Supporting structures 016421 - Field investigations in geomechanics 019424 - Geotechnical aspects of an earthquake 019425 - The theory of plasticity in soil mechanics 019429 - Land improvement and slope stabilization 016403 - Introduction to rock mechanics 019908 - Advanced Engineering Geology 018423 - Advanced Seminar in Soil Engineering A total of 16 professions. Alternative B: Master's degree in civil engineering with specialization Having a bachelor's degree in civil engineering and being registered in the civil engineering branch in the buildings section and having a master's degree in civil engineering - specializing in geotechnics (soil and foundation).

Soil and foundation consulting The field of soil consulting and foundation engineering is a derivative of the field of geotechnics and is usually acquired from engineering studies in an accredited academic institution, or in other institutions that grant a certificate in this field. The land consultant himself, is the professional authority whose role is to protect you and ensure your interests against whoever builds your house! Naturally, each soil has specific permanent characteristics (sand, rock, clay, chalk, etc.) and its own static a nd dynamic requirements, but the soil can react and behave differently when the environment changes from site to site. Therefore, a point-by-point, professional examination that takes into account all aspects and is based on a geological soil survey and drilling is extremely essential. The soil consultant's recommendation and report refers to the planned infrastructure (construction as a building, house, road, bridge, etc.) and is based on an in-depth geological examination of the soil type and its environmental characteristics. The foundation and taking into account the planned construction infrastructure as mentioned. In practice, the soil and foundation consulting process requires appropriate training in the field of geology and in order to supervise the test drillings, after which a "field of samples" will be presented which will be integrated into the soil report, which will include a recommendation for the nature and depth of the required foundation. The field tests can be based on SPT testing or full depth drilling as well as soil sampling After the construction engineer completes the execution plan, the land consultant adds his approval and in accordance with the findings he presented earlier. In most cases, the land and foundation consultant will also accompany the actual execution upon arrival at the work site and to make sure that the contractor implements the land consultant's recommendations. According to the findings in the field, a consultant The land can present interim reports with warnings or comments and/or a final report for approval of the execution. In addition, the process is accompanied by legal documents and reports that constitute binding professional instructions for the other professionals involved in the project, therefore a professional land consultant will accompany himself with legal and technical assistance as required - make sure of this in advance! How do you become a land consultant? To become a certified land consultant and so that you can identify and verify that your consultant is indeed properly certified - check the requirements of the Ministry of Labor and Welfare and whether he is registered in the "Land and Foundation" section as required.

Soil drilling An experimental soil drilling project for sampling (also known as trial drilling), in the process of formulating the soil report before the construction project, is a central and essential component that cannot be done without. Soil drilling - why? As part of the soil survey, samples are taken in the field through a series of drillings aimed at collecting soil samples at the designated locations and depths b ased on historical mapping of the site. The purpose of testing the soil as part of the drilling is to determine stability , the type and quality of the soil and allow the engineer and constructor to submit recommendations for the infrastructure of the future construction project. The professi onality and thoroughness of the various stages in the drilling and sampling process has a significant impact on the ability to analyze and formulate recommendations later and therefore on the nature of the planned construction project. The considerations for the experimental soil drilling contractor are based on the instructions of the soil consultant and the historical mapping as well as an examination of the actual sampling site and considerations of accessibility, coverage and clarity of the sampling products. Types of soil drilling for sampling - methods and considerations There are several methods performing soil drilling for sampling and the tools they use accordingly. The main considerations, in choosing the drilling method and tool, are: 1. Accessibility of the sampling site (restricted access, electricity/water infrastructure, closed building, etc.). 2. The depth and diameter of the drilling, according to the planned construction. 3. The type of soil. 4. The purpose of the project (private, commercial, public or other construction). For example, for private construction the accepted drilling depth is about 12 meters, while for a building about 24 meters. Therefore, according to the afore mentioned limitations, drilling is possible with the following methods: 1. Mechanical drilling tower - deep soil drilling, only on a site with high accessibility. 2. A mechanical drill on a truck - intended for great depths and difficult soil types. 3. A mechanical drill on a tractor with the ability to tilt - suitable for sites with limited accessibility, but not for deep drilling. 4. Hydraulic hand drill (mechanical) - limited in medium depth and diameter of operation, but suitable for sites with limited access even for a tractor drill. 5. Manual drill - limited in the depth and diameter of the operation and according to the physical ability of the driller, but suitable for sites with limited access even for a tractor drill. Types of drilling: 1. Core drilling (HQ wireline rock): designed for rocky soil. 2. Spiral drilling (hamster): designed for dry or sandy soil. 3. DCP drilling: soil density test designed for mapping the location of the layers, thickness and determination of soil strength (more on DCP drilling, here). 4. SPT drilling: drilling to evaluate the density of the soil, using a special tubular drill (more on SPT drilling, here ). Of course, the more drillings are carried out, the richer information is obtained and which enables a more accurate and reliable decision to be made. However, the land consultant together with the constructor knew how to optimize the layout of the drillings according to professional considerations and such as those detailed above. Selection of soil drilling services There is a large variety of soil drilling contractors on the market, so it is important to examine several alternatives of service, methods and price. Of course, you should not hire the services of a contractor who has not received recommendations and the products of his work have not been tested and accepted by the soil consultant you have chosen to contract with. In certain cases, the soil consultant himself will recommend to you the services of a drilling contractor that he works with on an ongoing basis and therefore trusts the professionalism of his work products - which, as mentioned, are essential for producing a professional land report. However, the soil consultant should be required to specify the requirements and products from the soil drilling and to allow a market survey between different contractors.

Haifa Chemicals South - industrial buildings and facilities Carrying out several construction and repair projects on the factory premises The challenge: A plant that includes many and varied construction elements in a variable soil section (sand/clay/lime bundles) and a very aggressive environment (chemicals) that damages the concrete. Repairing buildings and elements damaged by aggressiveness and damage to the ground. The solution: Collecting all the results of the field investigation from all over the plant enabled the use of existing knowledge and the reduction of field investigations in new projects. Adjusting the foundation solutions and performing aggressive soil tests in the various areas.

Soil anchors in Israel - vision and reality This article examines what is happening in the field of soil anchors about ten years after the issuance of the first Israeli standard in the field. The soil anchors have been used for many years in the construction industry to stabilize buildings, slop es, retaining walls, piers, dams, etc., and are designed to transfer forces from the front of the building to a stable area underground. Stability is achieved by significantly increasing the normal forces acting on potential destruction planes. Driving the anchors in advance for required labor may reduce the future displacements of the anchored structure. A choice of using soil anchor alternatives should take into account the advanced technology used in it to recruit relatively high workforces, while immediately checking the endurance both in the short term and in the long term. The article was published in the professional journal of the Association of Construction and Infrastructure Engineers "Construction and Infrastructure Engineering" Issue No. 90, March 2021. 1. The role of soil anchors and their importance in construction and infrastructure industries A. Ground anchors have been accepted in the construction and infrastructure industry in the world and in Israel for many years. The anchors are used in a wide variety of applications, such as: walled excavations for basements, in places where open excavations are not possible, due to considerations of space and risk to buildings and infrastructures, a means of protection against slope sliding, to receive the troubles expected from the planned construction such as dynamic forces caused by wind and earthquake disturbances, as well as lifting forces caused d ue to underground construction, below the groundwater level. Ha Lochem St. Bnei Brak. Sheathing walls on stilts are supported by anchors and soil nails B. The above speaks for itself and emphasizes the importance of the anchor component as complex and unusual construction elements. A review of the Israeli standards and general and special specifications reveals that these elements constitute a complex category, which includes a constructive aspect on the one hand, and a geotechnical aspect on the other. This aspect requires the action of construction planners skilled in the field with geotechnical consultants in the field of soil and foundation. C. Geotechnical structures are divided into three categories (as can be seen, in T.I., 940 part 1 and T.I. 940, part 3.1: geotechnical category No. 1, 2 and 3). According to this division, elements that include defined soil anchors, usually, as category 3. This means that failure of their function may cause serious damage to the nearby environment, disruption of the operation in the area, heavy economic damage, damage to people and property. Also, there is great difficulty in repairing and restoring the site and its surroundings, which requires a lot of time. D. It is clear that structures and anchored elements require special attention, both in the planning aspect and in the performance aspect. Failures in this area also create a negative media resonance. Over the years, many failures in this field have been published, as can be found for example on the Internet, which include, for example, the collapse of drywall walls in Ra'anana, Beit Shemesh, in a large project in Bnei Brak and many others known to those in the field. On the other hand, you can find impressive projects that have been successfully carried out (attempting to attach images from these sites is difficult to impossible due to copyright issues. Readers interested in this can find them by searching the Internet). E. Every year, about 20,000 anchors are installed in Israel, in many and varied projects. The majority of the anchors (about 95%) are temporary anchors, which are replaced during construction by permanent structural elements, such as ceilings. The rest (about 5%) are permanent anchors that are supposed to be used for the entire length of the structure, which in public projects reaches 120 sleep. F. Anchors are a complex mechanical element in its structure, in the way it is installed and in the way it functions and in the existing length of the structure. Failures in anchors can be due to the following reasons: Inadequate design of the support system, which includes the anchor + the constructive element it supports (conventional wall, reinforced concrete facade, bridge, etc.). An area under the responsibility of the planning team, mainly. Failure in the structure of the anchor itself, on its various components, which includes mechanical components, protections against corrosion, drilling and installation of the anchor. This area, for the most part, is the responsibility of the anchor contractor. Failure to test the anchor and guide it, including full monitoring of the anchor. The responsibility for this area is discussed in detail within this article. 2. The anchor, its components and standard requirements A. In 2011, a detailed Israeli standard was issued for the first time, dealing with ground anchors, TI 940 part 4.2, called "Geotechnical design: strengthening and stabilization of structures for engineering purposes - ground anchors made of piles". This standard is defined as a recommended standard, which is not legally binding (unless it is determined as such in another legal framework, which adopts it as binding). B. The anchors develop relatively high service tolerances for each anchor. This allows for a reduction in the number of anchors per square meter of wall façade and makes them more economical than other anchoring methods. This advantage is accompanied by a disadvantage, since the system has lower redundancy, due to which failure of a single anchor may create progressive failures in adjacent anchors, which may lead to a general failure. C. In light of the above and the complexity of the anchor, it is necessary to ensure that the requirements regarding the anchors are clear and include, among other things: Proven documentation of the various anchor components. The components of the anchor will be compatible with each other, in a way that guarantees the use of spare parts, without improvisation and meeting all the requirements. The properties of the materials will not change during the existing length of the anchors, (up to two years for temporary anchors and for the entire period of the structure's existence, for permanent anchors). The use of new technologies and methods is allowed if there is documentation, tests and knowledge proving the anchor's resistance to all standard requirements. Ha Lochem St. Bnei Brak. Sheathing walls with piles supported by anchors and soil nails Bnei Brak. Failure case: A wall with anchors that moves D. Within the framework of the existing standard, there are two types of anchors: cable anchors and anchors from treading rods (in addition to this, there are currently polymer anchors on the market made of films and/or round polymeric rods, which are not yet included in the standard and with which experience is limited). E. The anchors operate according to the principle of transferring the stresses acting on them from the structure, through the head of the anchor, to a stable area in the subsoil, outside the scope of mutual influence between them, which could cause a general failure (see attached anchor diagram). Drawing 1 - Geometry of ground anchors F. The front anchor part is connected to the structure using the anchor head system, adapted to the type of anchor (cable anchor, or rod anchor). The back part of the anchor is occupied, in a stable area of the ground and is anchored in it using cement mortar or resin mortar ("capture" area). The central part of the anchor passes through the ground which is in the "gliding circle", which is unstable. Therefore, the tread steel (cables or rods) is separated from the ground there, inside a flexible pipe. This area is defined as a "free section". G. All anchor components are designed against corrosion and corrosion, according to their existing period. The cement mortar is tested for its resistance against corrosion and all the tread steel and normal steel components are protected against welding, in accordance with what is required of the anchors. The synthetic anchor parts are protected against UV radiation, before their installation. In temporary anchors, at least one layer of protection against corrosion is required, while in permanent anchors two such layers of protection are required. H. The drilling of the anchors is done using a machine and equipment suitable for the type of soil, its stability and possible penetration to the groundwater level (more on soil drilling and their characteristics). I. According to the requirements of the standard, the production of the anchors will be done by a manufacturer with knowledge, technological ability and experience, who will be approved by a competent authority. J. Pouring an internal grout between the cables/treading rods and the threaded pipe allows, according to the standard, to consider this grout as a protective layer. Conditional on performing grouting under factory conditions, with high-quality cement grout, so that the amount and width of the cracks in the grout meet the requirements of the standard and comments on this topic, as detailed below). K. There is a requirement in the standard to protect the anchor components at all stages of execution. That is, from the moment it leaves the factory until it is installed in the hole designated for it. To protect the anchor, the production conditions must be taken care of, it must be transported to the site from the factory, and then it must be installed in the borehole. It can be understood that in the case of casting the "root" of the anchor in the factory, lifting it onto the truck, transporting it on the road, taking it off the truck, putting it down, lifting it again and inserting it (sometimes by force) into the borehole, could, with great certainty, cause many cracks, so that his wages were lost. In order to avoid such a thing, each anchor must be led in a designated template, which will prevent damage to it, until the moment of insertion into the borehole. Obviously, all this involves additional costs. The alternative is to establish a factory on the site, which is economical only in large projects, or to find another creative solution. L. After the anchors are installed, the standard requires that each anchor be stepped on to test the anchor's function on all its components. Only after this stage is completed can the anchor be locked in a planned work load. M. The standard requires that the entire process of monitoring and analyzing the findings be done by an experienced and qualified person, under the supervision of the inspector or another qualified body, when all the aforementioned bodies will be approved by the planner, in accordance with the documents presented. 3. Vision and reality in the field A. Issuance of general specifications between offices in 2005 and later, a detailed standard in 2011, were a milestone in the attempt to regulate the anchor industry, which had been operating for a long time before without regulated standardization and without clear procedures and rules, when the issue broke out and without a proper framework. The execution of the anchors then, was subject to special technical specifications issued by the planners, each according to his skills and understanding, without standardization. B. In many projects in the past, the execution of the anchors, their inspection and guidance, were carried out by the anchor contractors themselves without proper quality control and assurance, when the contractor is the operator and inspects himself at the same time. C. There is no doubt that the introduction of the specification and subsequently the standard contributed to raising awareness and the quality of the anchors produced, but not to the required extent and without proper supervision. At the same time, in recent years there has been a large increase in the number of anchor contractors entering the field. The intense competition led to a situation where the prices of the anchors dropped significantly (probably beyond the possibility of meeting all the requirements of the standard). One area that is particularly affected is the quality control over the installation of the anchors. There is currently a trend that contradicts the requirements of the standard, of going back to inspecting the anchors by the anchor contractors, despite what is stated in the standard and contrary to engineering logic. D. In the construction and infrastructure sector in the public and governmental sector, it is acceptable to carry out projects according to a quality procedure in which the contractor performs quality control as part of the agreement, while the client performs quality assurance. This issue is problematic in the field of anchors, which requires expertise and knowledge from the inspector. This procedure does not usually exist in the private market . E. In the prevailing situation in the field today, of the tough competition in the industry, the quality costs (quality control and assurance) and the additional time needed for high-quality execution of the anchors, there is a financial problem and a problem of schedules, both for the customer and the contractor of the anchors. The problems create repeated pressures on the planners and the management team. This could lower the quality of the product and endanger the project and the people. F. The Israeli standard for anchors has existed for ten years. It has not been revised yet, as required therein. It seems to me that it is time to re-examine the standard and update it, among other things to prevent further deterioration in the field, as detailed above. Encouraging news can be found in updated general specifications issued by Israel Railways in 2018. * Eng. Moti Yuger - union member, geotechnical cell, with a bachelor's degree and a degree in civil engineering, within the "Polytechnic Institute of New York". His specialization as part of his master's degree was in the field of foundation and geotechnical engineering. His professional activity as a freelancer, in the field of consulting for foundations and geotechnics, began in 1981, and in 2002 the firm moved to operate within the framework of Eng. The company specializes in solving difficult geotechnical problems and unique foundation methods in addition to its current activity. - Assisted in the preparation of the article, Eng. Shlomo Lieberman, from G.A.S. - Construction and Bridge Engineering Ltd. .

מהנדס קרקע וביסוס מהנדסים גאו-טכניים יעוץ קרקע וביסוס About Accessibility Statement - Yoger Engineers website Last update date: 12/10/2022 We, at the Yoger Engineers company website, respect all segments of the population. Therefore, we have drafted this accessibility statement to make it clear to you exactly what steps have been taken to ensure the inclusion and protection of all populations. The level of accessibility on the site The Web Content Accessibility Guidelines (WCAG) define requirements for designers to improve accessibility for people with disabilities. They define three levels of compliance: Level A, Level AA and Level AAA. Our website meets the AA accessibility level according to the WCAG standard. However, there may be exceptions and pages that do not meet this standard, in which case, please let us know and we will do our best to correct. The way we made the adjustments We made the adjustments through manual testing of various aspects of the site as well as through the accessibility wizard of the WIX platform, on top of which the site was built. The adjustments we made on the site In order to comply with the accessibility instructions, we have made several adjustments to the site. These include: Adjustments were made for browsing using a keyboard, trainings were made for the staff, the texts were written in a readable language, colors were chosen that make it easier for the users to read, all the images have a textual indication, the navigation structure of the site is fixed, you can use the keyboard and the mouse wheel to enlarge and reduce the text. Making contact and inquiries For any question or inquiry, the accessibility officer on the site will be available for you. You can contact her as follows: Alice French Phone: 09-8911401 Email: allis@engyuger.com

Lod train Construction of a train terminal, including an administration building, a fire station, extension of platforms and bridges at the Lod train station - an active and central station. The answer we gave in the project included: General concentration of the findings of the field investigation and geotechnical knowledge in the general area of the Lod train station. Accompanying the laying and foundation works in a large number of projects allows for a thorough acquaintance with the properties of the soil and possible execution methods.

A barge on stabilized soil using different techniques On the use of a barge on stabilized soil with different techniques - a lecture presented at the "Sixth Construction and Infrastructure Conference" of the "Association of Construction and Infrastructure Engineers" in November 2009. Alternatives to foundation solutions In this article we will present possible s olutions for the foundation using the "barge on piles" method, when instead of using reinforced concrete piles attached to the barge, "concrete pillars" or other material are used, while maintaining a space between them and the bottom of the barge in such a way that the stress applied to the barge, from the structure (vertical and horizontal) acts directly on the concrete columns. The purpose of the "pillars" is to serve as elements that stabilize and improve the properties of the soil mass in which they are installed, so that the combined mass can be attributed uniform improved mechanical properties when the system as a whole functions similarly to a barge on stilts, at lower costs. Another significant advantage is that the afore mentioned change allows the barge to be treated as a normal barge, based on land with improved properties, which simplifies the calculation of the barge, as a normal barge, with springs, relying on the new parameters determined by the land consultant. Barge on stilts In Israel and in the world it has been known for many years [Burland et al. (1977), Davis & Poulos (1972), Zeevaert (1957) ] (1979 (Hooper) ) as the method of establishing high-rise buildings and special buildings with heavy loads such as silos and storage tanks while combining barge and pilings when the pilings are mainly used as elements to reduce the subsidence expected in the barge. In this method the pilings are usually made as an integral part of the barge with a constructive connection between them. The piles in this method are calculated according to several alternatives: • A group of piles in a uniform distribution when the barge acts as a common head for the piles. In this situation the piles carry most of the load and the barge carries a small part of the load and the calculation is like that of a group of piles with a common head when the piles have an acceptable safety factor. • Piles evenly distributed under the barge, designed as "creeping" piles by calculating them for a tolerance of about 80% of the destruction tolerance and the total load between the piles and the barge is distributed accordingly. • Piles "creep" in an even distribution, where the piles are calculated for 100% of the load in destruction tolerance. In such a situation, the treatment of piles is only as subsidence reducers, while increasing the general security factor of the system. • Making groups of piles only in areas of heavy loads to reduce differential subsidence in the area of the barge, between more loaded and less loaded areas. With the development of the barge on stilts method and the experience gained, the question of the meaning and necessity of connecting the stilts to the barge was raised. When the piles are connected to the barge, most of the horizontal forces acting on the structure are transferred to the piles, due to their relatively high rigidity, and this can cause shear stresses and moments in the piles to the point of failure. This can require the addition of pilings beyond what is required to limit subsidence. In special buildings, where the useful loads are high and change (silos and silos), the connection also causes pullout forces in the piles that previously sank under the load that is removed afterwards. In light of this, they began making barges on piles without a constructive connection between them and even creating a space between the piles and the barge in such a way that the barge would not be in contact with the pile heads at all. As soon as there is complete separation between the piles and the barge, the reference to them can be changed and they can be seen as part of a system of stabilized and reinforced soil (1979, Hooper). One of the problems with the calculation methods of a barge on stilts as detailed above is the complexity and difficulty of the calculation. The calculation is essentially three-dimensional which also requires the use of advanced three-dimensional computer programs. This causes many engineers to shy away from the method, which therefore does not become common knowledge. Land stabilization and improvement There are currently several options for soil stabilization that can be used to improve the soil under the barge: • Stone pillars - with this method it is possible to drill, using modified methods, a borehole and fill it from the top with hard stone aggregate that will be tightened in stages using a vibrator. In cases where the bore is not stable, it is necessary to insert a corrective stepping stone into its lower part and tighten while lifting and tightening in stages which requires the use of special equipment. • Using the technology of Jet Grout columns - with this method, a drill is inserted to the planned depth and gradually raised while rotating and laterally injecting cement mortar at very high pressure in a way that produces columns of cement mortar that is also mixed with the local soil. • Drilling and casting of concrete columns using the "dry" method, or in case of stability and groundwater problems, drilling and casting using a CFA machine or bentonite technology. • Use of other reinforcing materials such as lime columns, thin concrete and CLSM, provided that their tolerance to the various troubles and their effectiveness in curbing subsidence are proven. calculation methods • As mentioned, one of the advantages of the application described above is that it allows for the simplification of the calculation method and bringing it to a situation where all that is required of the constructor is to calculate a normal barge on stabilized and improved ground that has the property of a spring coefficient proposed by (1867 Winkler), according to the relationship δ = κ ⋅ σ [where δ - the settlement at a certain point under the barge, κ - stiffness of the Winkler spring, or as it is called the "substrate modulus" and σ - the contact stress at the point]. As part of the development of stone and lime columns, different calculation methods were proposed, of which we have given her A weighted substrate number modulus was calculated for the methods described above for soil stabilization and improvement, such as by (Prof W. VanImple (1983) and (Dr H. Bredenberg (1983). An article was also published in 2002 (unsigned) by the Technion Institute titled Deep Mixing-Lime Columns in 2002. The mirror is also a calculation method. • Based on the above it is possible to calculate a weighted κ: Required data: 1. Determination of intervals x, y between the stiffening columns. 2. Finding the modulus of elasticity of the column and the ground. 3. Determining the cross-section dimensions of the column and its depth in the ground. Calculations: * The figure κtotal is used by the constructor for the barge calculations, while the calculation of the settlement in the structure can be performed by the foundation consultant, according to the shortening of the mass of the stabilized soil, plus the settlement in the ground below the stabilized soil. Summary The method simplifies the calculation of the foundation for the barge on the Winkler medium on the one hand and determining the properties of the medium on the other hand.

Commercial building in Har Tuv industrial area A second opinion that led to a change in the execution method in two supporting walls and saved a lot of time while reducing costs by hundreds of thousands of shekels The challenge: Deep excavations of up to 20 m in problematic soil (marlstone), near buildings and active infrastructure. Aspiration to avoid permanent and temporary soil anchors. The solution: The solution included changing the anchors to nails on the first wall and turning the second wall into a graded wall instead of an anchor wall. A series of calculations and tests was performed to examine different support solutions using a software. Working closely with the customer (executive contractor) while examining alternatives and adapting them to the constraints and preferences of the customer. Making tiered rows of piles with horizontal connection of concrete floors and making permanent soil nails, as an alternative to permanent soil anchors.

מהנדס קרקע וביסוס מהנדסים גאו-טכניים יעוץ קרקע וביסוס About Accessibility Statement - Yoger Engineers website Last update date: 12/10/2022 We, at the Yoger Engineers company website, respect all segments of the population. Therefore, we have drafted this accessibility statement to make it clear to you exactly what steps have been taken to ensure the inclusion and protection of all populations. The level of accessibility on the site The Web Content Accessibility Guidelines (WCAG) define requirements for designers to improve accessibility for people with disabilities. They define three levels of compliance: Level A, Level AA and Level AAA. Our website meets the AA accessibility level according to the WCAG standard. However, there may be exceptions and pages that do not meet this standard, in which case, please let us know and we will do our best to correct. The way we made the adjustments We made the adjustments through manual testing of various aspects of the site as well as through the accessibility wizard of the WIX platform, on top of which the site was built. The adjustments we made on the site In order to comply with the accessibility instructions, we have made several adjustments to the site. These include: Adjustments were made for browsing using a keyboard, trainings were made for the staff, the texts were written in a readable language, colors were chosen that make it easier for the users to read, all the images have a textual indication, the navigation structure of the site is fixed, you can use the keyboard and the mouse wheel to enlarge and reduce the text. Making contact and inquiries For any question or inquiry, the accessibility officer on the site will be available for you. You can contact her as follows: Alice French Phone: 09-8911401 Email: allis@engyuger.com