where there the two columns faces overlap each other,
when the column face is near to the boundary line
Isolated footing Transfers individual column loads directly to the soil. If a single spread footing interferes with another spread footing, the two can be combined to form a combined footing.
Combined footing
Depends on what the footing is holding. Typically, the reinforcing is place each direction in the bottom 3" of the footing. A top mat is sometimes required as is verical and horizontal bands, again dependent on the application required. The project engineer should have a designation of what and how much reinforcing is reqd.
Yes, a concrete patio step does in fact need to be on a footing. Without the proper footing foundation, the step will be uneven.
Suppose a number of columns in a row are to be supported on a soil of such low bearing strength, that separate bases if provided would overlap,a practical solution would be to provide a column footing to support all the columns of the row. such a footing is called a "STRIP FOOTING"
Isolated footing Transfers individual column loads directly to the soil. If a single spread footing interferes with another spread footing, the two can be combined to form a combined footing.
Combined footing
A Combined footing is a long footing supporting two or more columns in one row. While a Mat or Raft foundation is a large footing, usually supporting several columns in two or more rows.
1) space outside the external column is limited by property line, pipes, ... etc. 2) Two columns are closed together and separate footing would over lab.
3.5 to 4 ft
Depends on what the footing is holding. Typically, the reinforcing is place each direction in the bottom 3" of the footing. A top mat is sometimes required as is verical and horizontal bands, again dependent on the application required. The project engineer should have a designation of what and how much reinforcing is reqd.
footing is footing and fooot foot foot foot
PCC-plain cement concrete of grades 1:5:10 or 1:4:8 proportion is used as leveling course in the foundation trenches to act as level platform for r.c.c footing for columns / masonry footing for load bearing walls.it also serves as separating layer between natural soil and footing so that any harmful chemical present in soil will not act on the footing.PCC has no structural importance.in case of of trences or pits excavated than the required depth,the extra depth should be filled with pcc of required grade at the expense of contractor to the required level to place the footing.
strip footing drawing and plan
pad footing is the base of a column that transfers the load to the foundation.
pad footing is the base of a column that transfers the load to the foundation.
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