SkyCiv Foundation provides a user-friendly interface paired with powerful design to easily model isolated foundations. The Isolated Foundation user-interface is composed into 4 tabs: Detalhes, Foundations, Entrada e Resultados.

eu. Detalhes

Once the user has chosen a design code, the user will be presented with the “Detalhes” tab as shown below. The units will be chosen automatically based on the design code chosen

Figura 1. Project tab details

The user can fill the information for the project details, tal como

• Um nome de projeto
• Um ID de Projeto
• UI-Detalhes-AISC
• O Designer
• O cliente
• Project Notes (open ended notes)

This information will be inserted into the generated design report.

II. Foundations

Figura 2. Foundation tab details

Summary of inputs on the “Fundação” aba:

• Foundation ID – assign numerical identification to each foundation.
• Modelo – pressão de velocidade calculada “Isolated Foundation” from the drop-down menu.
• Apoia – boundary conditions for the foundation (Consulte a Figura 3)
  Pin (FFFFRR) – resists vertical and horizontal forces, torção, but bending moments about local Y and Z axis
  3D Pin (FFFRRR) – resists vertical and horizontal forces ONLY
  Fixo (FFFFFF) – resists vertical and horizontal forces, as well as moments
• Antes de carregar sua estrutura – self-weight factor
• Status – resultant of foundation design
  Passar – the input parameters in the foundation is adequate.
  Falhou – the input parameters in the foundation is not adequate.
• Editar – click this to start inputting data and edit your foundation
• Delete – delete the foundation

Figura 3. Type of Supports

III. Entrada

Figura 4. Selecting the Base Isolada no menu suspenso.

Os usuários podem estabelecer o tipo de fundação, conforme mostrado na Figura 4, pressão de velocidade calculada “Base Isolada” to bring up this view

Figura 5. Foundation Tab

O “Entrada” guia pode ser separada em três guias separadas, cada um servindo a um propósito específico:

• Left Tab
  Separates the different input categories such as: Footing, Coluna, Soil, Materiais, Cargas, Reinforcement and Design Parameters.
• Screen Tab
  User can select different diagram configuration such as Geometry, Analytical or both simultaneously (mostrado na Figura 6). This is where dimensions, units, and analysis graphics of the footing are shown.
• Right Tab
  Changes in accordance to which input configuration is selected. This is where all of the information with be inputted.

The Screen tab (model space) in the middle can be changed to three different view by clicking the required button in the upper right of the Screen tab. Figura 6 shows these three views.

Figura 6. (deixou) Geometry Diagram (Centro) Analytical Diagram (direito) Both Geometry and Analytical Diagram

Lets go over the different input categories in a little more detail.

Footing Configuration

Figura 7. Right Tab of selected Footing Configuration at the left tab.

Veja a figura 8 for the nomenclature of the foundation dimensions:

Figura 8. Foundation with designation

Column Configuration

Figura 9. Right Tab of selected Column Configuration at the left tab.

Observação: Pra λ_s Modifier – Por ACI 318-14 Seção 22.6.5.3 – The value of λ_s é 40 for interior columns, 30 for edge columns and 20 for corner columns.

Veja a figura 10 for the nomenclature of the foundation dimensions:

Figura 10. Foundation with designation

Soil Configuration

Figura 11. Right Tab of selected Soil Configuration at the left tab.

Observação: Soil values are usually found in the Geo-technical Report.

Materiais

Figura 12. Right Tab of selected Material button at the left tab.

Cargas

Quando “Cargas” are selected, a pop-up window will appear:

Figura 13. Loads input window after clicking Cargas

Reforço

To navigate between the reinforcement in the X and Z direction, and the column reinforcement, toggle between them using the buttons on the upper right of the Right Tab with Reforço selecionado.

Figura 15. Right Tab of selected Reforço button at the left tab.

Figura 14 details the direction nomenclature for the X and Z reinforcement

Figura 14. Detalhes de reforço.

Referência de código de vergalhão:

• ASTM615 – Sociedade Americana para Testes e Materiais 615 : Standard Specification for Deformed and Plain Carbon-Steel Bars for Concrete Reinforcement
• N – Australian Rebar Class N
• PNS49 – Philippines National Standard 49 : Barras de aço para reforço de concreto – Especificação.

Parâmetros de projeto

To navigate between different Design Parameters, toggle between them using the buttons on the upper right of the Right Tab with Parâmetros de projeto selecionado. This section will change depending on the

Figura 16. Right Tab of selected Parâmetros de projeto button at the left tab.

IV. Resultados

After hitting the Verificar Design botão, your design will be directed to the “Results Page”. Each column, except for the last two, represents a design check completed by the Foundation module. The values are represented as unity ratios, where anything under 1.0 is a PASS, and anything over 1.0 is a FAIL. The last two columns represent the area of steel in both directions of the footing.

Figura 17. Resultados Output page

Summary of column representations:

• DIM
  Ratio of user’s input dimensions over required design dimensions.
• Overturning
  Ratio of overturning moment experienced over allowable overturning moment.
• Sliding
  Ratio of sliding force experienced over sliding resistance.
• Soil Pressure
  Ratio of soil pressure from experienced loads over allowable soil pressure.
• Essas cargas distribuídas equivalentes são o que é usado para a análise do membro
  Ratio of ONE-way shear demand over capacity.
• Essas cargas distribuídas equivalentes são o que é usado para a análise do membro
  Ratio of TWO-way shear demand over capacity.
• Flexure
  Ratio of flexural demand over flexural capacity.
• Como_x
  Reinforcement area along x-axis.
• Como_com
  Reinforcement area along z-axis.
• Status
  Indicates that the foundation design is cdot K_a ou FAIL
• Relatório
  Click to see detailed calculation of the design foundation

Referência:

1. Requisitos do código de construção para concreto estrutural (ACI 318-14) Comentário sobre os requisitos do código de construção para concreto estrutural (ACI 318R-14). American Concrete Institute, 2014.
2. Taylor, Andrew, et al. O Manual de Projeto de Concreto Armado: um companheiro para ACI-318-14. American Concrete Institute, 2015.