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: Dettagli, Foundations, Ingresso e risultati.

io. Dettagli

Once the user has chosen a design code, all'utente verrà presentato il file “Dettagli” 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, ad esempio

• Un nome di progetto
• Un ID progetto
• Il nome della tua azienda
• Il disegnatore
• Il cliente
• Project Notes (open ended notes)

Queste informazioni verranno inserite nel report di progettazione generato.

II. Foundations

figura 2. Foundation tab details

Summary of inputs on the “Fondazione” tab:

• Foundation ID – assign numerical identification to each foundation.
• genere – dovresti sentirti pronto per affrontare progetti molto più grandi e complessi “Isolated Foundation” from the drop-down menu.
• supporti – boundary conditions for the foundation (Fare riferimento alla figura 3)
  Pin (FFFFRR) – resists vertical and horizontal forces, torsione, but bending moments about local Y and Z axis
  3Pin D (FFFRRR) – resists vertical and horizontal forces ONLY
  Fisso (FFFFFF) – resists vertical and horizontal forces, as well as moments
• SW – self-weight factor
• Stato – resultant of foundation design
  Passaggio – the input parameters in the foundation is adequate.
  Fallire – the input parameters in the foundation is not adequate.
• modificare – click this to start inputting data and edit your foundation
• Eliminare – delete the foundation

figura 3. Type of Supports

III. Ingresso

figura 4. Selecting the Base isolata on the drop-down menu.

Users can establish the type of foundation as shown in Figure 4, dovresti sentirti pronto per affrontare progetti molto più grandi e complessi “Base isolata” to bring up this view

figura 5. Foundation Tab

Il “Ingresso” tab can be separated into three separate tabs, each serving a specific purpose:

• Left Tab
  Separates the different input categories such as: Footing, Colonna, Soil, materiale, Carichi, Reinforcement and Design Parameters.
• Screen Tab
  User can select different diagram configuration such as Geometry, Analytical or both simultaneously (mostrato in 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. (sinistra) Geometry Diagram (centro) Analytical Diagram (giusto) 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.

Guarda la 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.

Nota: Per λ_S Modifier – Per ACI 318-14 Sezione 22.6.5.3 – The value of λ_S è 40 for interior columns, 30 for edge columns and 20 for corner columns.

Guarda la 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.

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

materiale

figura 12. Right Tab of selected Materiale button at the left tab.

Carichi

quando “Carichi” are selected, a pop-up window will appear:

figura 13. Loads input window after clicking Carichi

Rinforzo

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 Rinforzo selected.

figura 15. Right Tab of selected Rinforzo button at the left tab.

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

figura 14. Details of Reinforcement.

Rebar Code Reference:

• ASTM615 – American Society for Testing and Materials 615 : Standard Specification for Deformed and Plain Carbon-Steel Bars for Concrete Reinforcement
• N – Australian Rebar Class N
• PNS49 – Philippines National Standard 49 : Steelbars for concrete reinforcement – Specification.

Design Parameters

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

figura 16. Right Tab of selected Design Parameters button at the left tab.

IV. risultati

After hitting the Controlla il design pulsante, 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. risultati 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.
• Pressione del suolo
  Ratio of soil pressure from experienced loads over allowable soil pressure.
• Senso Unico
  Ratio of ONE-way shear demand over capacity.
• A due vie
  Ratio of TWO-way shear demand over capacity.
• Flessione
  Ratio of flexural demand over flexural capacity.
• Come_X
  Reinforcement area along x-axis.
• Come_con
  Reinforcement area along z-axis.
• Stato
  Indicates that the foundation design is Metà dell'altezza del muro dal fondo della base per il caso del o FAIL
• rapporto
  Click to see detailed calculation of the design foundation

Riferimento:

1. Requisiti del codice di costruzione per calcestruzzo strutturale (ACI 318-14) Commento ai requisiti del codice edilizio per il calcestruzzo strutturale (ACI 318R-14). American Concrete Institute, 2014.
2. Taylor, Andrea, et al. Il manuale di progettazione del cemento armato: un compagno di ACI-318-14. American Concrete Institute, 2015.