Arbetets mål har varit att modellera en pålad grundläggning och den underliggande marken för ett flervåningshus i CAD-programmet FEM-Design. Den framtagna modellen har utvärderats och jämförts mot en referensmodell. Arbetet undersökte även FEM-Design och tillförlitligheten i programmets uträkningar och teorier. För att de uppsatta målen skulle uppnås ufördes en litteraturstudie med syftet att utreda de teorier och samband som Strusoft, grundarna av FEM-Design, har använt. För att modellera den underliggande marken skapades en jordmodell. Jordlagren skapades utifrån avläsning av hejarsonderingar från en geoteknisk undersökning. Den pålade grundläggningen togs fram med hjälp av en erhållen CAD-modell som gestaltar flervåningshuset, medföljande laster samt den geoteknisk undersökningen. Lasterna som den erhållna CAD-modellen orsakar fångas upp av punkt- och linjestöd och går sedermera att avläsas. En grund av balkar modellerades för att sprida lasten till pålarna, avståndet mellan pålarna bestämdes efter lastens värde. Kraften som går ner i pålen får inte överstiga knäckkraften som angavs i den geotekniska undersökningen och är beräknad med partialkoefficientmetoden. Resultatet visade att Strusofts antaganden kräver en erfaren geokonstruktör för ett realistiskt resultat. Vidare visade resultatet att den framtagna pålmodellen innehåller 78 pålar medan referensmodellen inehåller 102 pålar. Av 13 utvalda pålar nådde ingen av pålarna över 62% av knäckkraften och i jämförelse med referensmodellen är alla 13 pålar mer effektivt slagna, som mest med 57%. / The aim of the work has been to model a piled foundation and the underlying ground for a multi-storey building in the CAD program FEM-Design. The model developed is evaluated and compared with a reference model. The study also examined FEM-Design and the reliability of their calculations and theories. To achieve the goals, a literature study was conducted to investigate the theories that Strusoft, the founders of FEM-Design, have used. To model the underlying ground, a soil model was created. The soil layers were created based on reading of weight probe testing from a geotechnical study. The piled foundation was produced with the help of an obtained CAD model of a multi-storey building, the accompanying loads and the geotechnical survey. The loads caused by the obtained CAD model are captured by point and line supports. A base of beams is constructed to spread the load to the piles, the distance between the piles is determined according to the value of the load. The force that went down into the pile was not allowed to exceed the buckling force stated in the geotechnical survey and was calculated with help from the partial coefficient method. The results showed that Strusoft's assumptions require an experienced geoconstructor for a realistic result. Furthermore, the result showed that the developed pile model contains 78 piles while the reference model contains 102 piles. Of 13 selected piles, none of the piles reached over 62% of the buckling force and in comparison with the reference model, all 13 are more efficient, at most with 57%.

Orientador: Salatier Buzetti / Resumo: O desenvolvimento radicular em plantações de eucalipto tem sido apontado como uma das estratégias cruciais para sua adaptação e crescimento, em especial, em condições tropicais, que possuem solos pobres em nutrientes. Neste contexto, torna-se extremamente importante avaliar o perfil do solo nestas plantações, a luz de uma perspectiva de fornecimento de nutrientes e água para as plantações de eucalipto. Tendo isto em vista, especificamente nesta tese, dois trabalhos foram conduzidos para avaliar os atributos do solo e o desenvolvimento radicular em plantações de eucalipto no brasil, a saber: 1) Disponibilidade de Água no Solo em Plantios de Eucalipto em uma Cronossequência, e suas Relações com a Produtividade e Densidade Básica da Madeira e suas Estimativas Através de Redes Neurais Artificiais no Brasil; 2) Padrões e Distribuição Vertical dos Atributos do Solo na Plantação de Eucalipto no Brasil. A rede experimental completa possui 34 experimentos plantados em um gradiente climático no Brasil e 2 locais no Uruguai, com 36 locais experimentais no total. Avaliaram-se sítios desde baixo incremento médio anual (13,7 m³ ha-1 ano-1, 61% abaixo da média nacional de produtividade), até sítios com elevada produtividade com IMA de 67,2 m³ há-1 ano-1 (92% acima da média nacional de produção de madeira). No trabalho 1, avaliaram-se14 experimentos, e no trabalho 2, 4 experimentos, todos eles ao longo de um forte gradiente climático no Brasil. No caso do trabalho 1 foram avaliados atributos... (Resumo completo, clicar acesso eletrônico abaixo) / Abstract: The root development in eucalyptus plantations has been pointed out as one of the crucial strategies for their adaptation and growth, especially in tropical conditions, which have nutrient poor soils. In this context, it is extremely important to evaluate the soil profile in these plantations, considering a nutrient and water supply perspective for eucalyptus plantations. With this in mind, specifically in this thesis, two studies were conducted to evaluate soil attributes and root development in eucalyptus plantations in Brazil, namely: 1) Availability of Soil Water in Eucalyptus Plantations in a Chronosequence, and their Relationships with the Productivity and Basic Density of Madeira and its Estimates through Artificial Neural Networks in Brazil; 2) Patterns and Vertical Distribution of Soil Attributes in Eucalyptus Plantation in Brazil. The complete experimental network has 34 experiments planted in a climatic gradient in Brazil and 2 sites in Uruguay, with 36 experimental sites in total. Sites were evaluated from low average annual increment (13.7 m³ ha-1 year-1, 61% below the national average of productivity), to sites with high productivity with an IMA of 67.2 m³ ha-1 year -1 (92% above the national average of wood production). In work 1, 14 experiments were evaluated, and in the work 2, 4 experiments, all of them along a strong climatic gradient in Brazil. In the case of work 1, physical attributes of the soils (clay, silt, total sand, field capacity, permanent wiltin... (Complete abstract click electronic access below) / Doutor