A beam is a horizontal structural member provided in buildings to transfer loads from structures above to columns,
walls, and foundations.
Among the different types of beams used in building construction,
two common types are tie beams and base beams.
The base beam is constructed at the base level, while the tie beam is built above the base level.
This article explains the differences between base beams and tie beams used in building construction.
base beam
The base beam is a beam member built at the base level, which separates the superstructure and substructure of the building.
The main function of a base beam is to hold all columns and walls together to transfer loads uniformly to the foundation.
Base girders are involved in all types of load transfer.
Base beams are built only at base level.
The base beam reduces differential settlement, preventing cracks from reaching the wall and penetration of moisture.
The base beams are built of cement reinforced concrete into the structures.
Tie-beam
Tie-beam is a beam member built above ground level to connect or connect two column members or rafters.
The main function of the strapping beam is to act as a column length cutter when the ceiling height is greater than the normal height.
In such cases, a strapping beam joins the columns to reduce their effective size and slenderness ratio.
Tie beams are not used for any vertical load transmission but they take an axial compression load.
They are used to increase the rigidity of the structure.
Tie beams shall also be constructed anywhere between base level and floor level for columns over 4 to 5 meters in height.
Column tie beam effectively prevents buckling failure or holds the rafters and columns together in the truss system.
Beams can be made of steel, wood or reinforced concrete depending on the type of building construction.
Base beams are a type of strapping beam that is constructed at the base level.
But both types differ based on the function they perform in the building.
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