SCHEDULE A CONSULTATION: https://forms.gle/uu2j22sokNfaETcX7 FOLLOW RVCAST: https://open.spotify.com/show/5mmmgJX... INSTAGRAM (@rvengenhariacivil): / rvengenhariacivil WhatsApp: (13) 99674-3763 E-mail: [email protected] Website: www.rvconstrucoesepericias.com.br CONCRETE WALLS: • LEARN EVERYTHING ABOUT THE CONCRETE WALLS SYSTEM... SPT SURVEYING IN PRACTICE, WITH REPORT INTERPRETATION: • SPT SURVEYING IN PRACTICE. WITH INTERPRE... ALLOWABLE SOIL STRESS: • #DICARV22 - ALLOWABLE SOIL STRESS SIZING OF FOOTWEAR: • #DICARV23 - SIZING OF FOOTWEAR... SIZING OF REINFORCEMENTS OF ISOLATED FOOTWEAR: • #DICARV26 - SIZING OF REINFORCEMENTS... WHAT IS THE LOAD THAT REACHES THE FOUNDATION? • #DICARV20 - WHAT IS THE LOAD THAT REACHES THE... HOW TO DEFINE THE FCK OF CONCRETE? • HOW TO DEFINE THE FCK OF CONCRETE TYPES OF SHALLOW FOUNDATIONS: FOOTWEAR, BLOCKS AND RADIER: • #DICARV42 - KNOW EVERYTHING ABOUT THE TYPES... TYPES OF FOUNDATIONS: • TYPES OF FOUNDATIONS. Learn all about ... SIZING OF FOUNDATION BLOCK: • #DICARV24 - SIZING OF BLOCK ... SIZING OF BLOCK FOR CROWNING 1 PILE: • SIZING OF BLOCK FOR 1 PILE SIZING OF BLOCK FOR CROWNING 2 PILES: • SIZING OF BLOCK FOR 2 PILES SIZING OF BLOCK FOR CROWNING 3 PILES: • SIZING OF BLOCK FOR 3 PILES SIZING OF BLOCK FOR CROWNING 4 PILES: • SIZING OF BLOCK FOR CROWNING... RADIER According to the Brazilian foundation standard, the expression radier can be used when an associated shallow foundation receives all the pillars of the work (general raft) or when it receives only part of the pillars of the work (partial raft). From a design point of view, however, these two cases can be treated in the same way. A raft is a shallow foundation element consisting of a single element that receives part or all of the loads from the structure's pillars, distributing them to the ground. A raft consists of a single foundation element that distributes all of the building's load to the ground, whose load distribution is typically superficial. A raft (slabs on grade) is a continuous slab supported by the ground using as a total load a uniformly distributed load corresponding to a maximum of 50% of the permissible stress of said soil. When all of a structure's pillars transmit loads to the ground through a single foundation such as a large footing, this element is called a raft. A raft is, therefore, a solid or ribbed slab foundation or even a system consisting of slabs and beams. In the latter case, it will be similar to the case of hollow footings, which receive the loads from the structure and transmit them to the ground. As isolated and/or associated footings begin to exceed 50% to 70% of the construction project area (a condition that makes them economical), raft structures begin to become interesting. Although they require greater concrete consumption, formwork consumption can be drastically reduced and the speed of the work becomes one of the factors of competitiveness. A raft foundation is adopted when: The areas of the footings are close to each other or even intersect (as a result of high loads on the pillars and/or low allowable stresses); It is desired to standardize the settlements (through an associated foundation). A practical guideline: when the total area of ​​the footings is greater than 50% to 70% of the construction area, a raft should be adopted. Depending on the acting loads, rafts can reach thicknesses ranging from 10 to 150 cm. This thickness will depend on the punching shear stresses and/or the distances between supports (loads) that determine the values ​​of the stresses developed in these slabs. However, they must comply with the following minimum thickness limits, as specified in item 13.2.4.1 of NBR 6118 (ABNT, 2014): 10 cm for slabs that support vehicles with a total weight less than or equal to 30 kN; 12 cm for slabs that support vehicles with a total weight greater than 30 kN; 15 cm for slabs with prestressing supported by beams (with a minimum of: l/42 for simply supported floor slabs; l/50 for continuous floor slabs); 16 cm for flat slabs; 14 cm for mushroom slabs, outside the capital.