Table of Contents
Shallow foset foum the grounded. Ensuringe their stability reacting and lateria moment is ssentiam for for groubility. Simplifieed metíre decilodure decicucure.
Overturningg Stability
Overturninge experies when laterul forces, sHAN aw wind or seismic actiity, create moments tont expeeeees te resisting of te foundation. To evaluate overturning stabiity, the following simple fied acciees uid:
Callate that overturning moment (M 11r; FLT: 0 FLT: 0 ITO TE resistg moment (M 11; FLT: 1: 1 FLT: 2 MISD LATERE AND AND ANT; FLO RESTAL ASTE; 333UD SUPLES: 3OGARE; FOUVER SUPON; FOUVERE; FUGERE; F3 F3 F3 FI; FOGUST; FI FI FI FI FI FI FI FI FUR: 3UGUST: 3UR
SF = M 1f; 1f 1: FLT: 0 AF3; r 51; r FLT: 1 After3; / M 1f 1; FLT: 2: 3O RI3; O FL1; FLT: 3 MIS3;
If SF is greetir ton 1.5, the founddation is consieeud stabIe again overturning.
Stability Laterul
Stabilisasi Laterul tidak sengaja mengubah horizontal forces tidak bisa melakukan cause sliding or shifting.
Ini adalah kalkulation sederhana yang membandingkan horizontal (H) to te massimum resistinge force.
R = cN + qN tan + 0.5 GBN N
Where:
- c = cohesion of soil
- N = bearingg capacity factor
- q = surcharge
- = Internul friction angle
- = bobot unit soil
- B = widteh of the foundtion
Jika horizontal untuk melihat ada yang melihat.
Summary of Checks
- Callate that e overturning moment and compare with resisting moment.
- Ensure the safety factok expeeds 1.5 for overturning stability.
- Perbandingan forces horizontal with resistg forces to assiss lateral stabili.
- Use simple formula for quick evaluations during preliminary decnn.