Variations among Plinth and Tie beam and their benefits
PLINTH BEAM: Plinth beam stands for a beam in a framed structure that is arranged at or above ground level or sometimes underneath ground level to sustain the weight of the wall constructed on top of it.
Usually, plinth beam ties all pillar and performs as the base for building up walls. It is also called as a tie beam.
Plinth beams also decrease the length, thinness as well as slenderness ratio of the columns.
The plinth beams are utilized to get rid of differential settlement, set the plinth plane perfectly, tie all the columns in case the depth of foundation is elevated, and circumvent difficulties in building up walls.
It offers extra strength with respect to settlements of the building and earthquake damages.
Steel should be used in plinth beam. In the bottom of the plinth beam, there should be steel with 12mm diameter. In top portion, there should be steel with 10 mm diameter. The depth of plinth should not be under 20 cm. The concrete cover with dimension 25 mm should be utilized for plinth beam.
A plinth beam offers the following benefits:
• To circumvent differential settlement.
• To retain the plinth plane correct.
• To join all the columns if depth of foundation is raised.
• To get rid of difficulties in construction of walls.
• To avoid the expansion of crack from foundation into the wall.
• To avoid seepage into the building.
TIE BEAM: Tie beam stands for a horizontal beam that unites column and footing. It is applied to counter two other structural members from deflecting or separating. It transmits the load to the column of the structure.
It also serves as a stiffner to the columns and in this manner minimizes the long column effect. Sometimes it also functions as a damp proof course at the plinth level as well as a separator for ventilators and doors when placed at the lintel level.
The tie beam offers the following benefits :-
The tie beam is arranged for the column as well as for the structure if the height of the column exceeds 4 to 5 meter.
Retain the spread footings in their exact locations throughout the seismic events.
It functions like a grade beams to rearrange the vertical loads through moment and shear in the event of differential settlement.
It functions as strip footings to support interior or exterior walls.