Lintels are horizontal members that span openings in walls and transfer the load of masonry above openings to the walls. They come in various materials, including timber, stone, brick, and steel. Timber lintels are the oldest but are no longer commonly used because they are costly, structurally weak, and vulnerable to fire. Stone lintels are suitable for spans up to 2 meters where stone is abundantly available but are weak in tension and can crack under vibratory loads. Brick lintels can span up to 1 meter for light loads but are not very structurally strong. Steel lintels are used for large openings and heavy loads, consisting of steel beams embedded in concrete or clad in stone.

1. LINTELS
Presented By
Gayathry Satheesan

2. • Lintel is a horizontal flexural member which spans over the openings in the
walls for doors, windows, ventilators, cupboards etc.
• The load of masonry above the opening is transferred to the wall by flexural
action of the lintel so that frames of doors, windows etc are not excessively
loaded.
• The end bearings for the lintel should be at least 200 mm.
• The width of lintels is same as that of wall
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3. .
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4. Lintels of various materials are used. They are:
(a) Timber
(b) Stone
(c) Brick
(d) Steel.
(e) R.C.C
NO LINTEL??? THIS MAY HAPPEN
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5. (a) Timber lintels
Oldest type
Not commonly used now-a-days
Costlier, structurally weak and vulnerable to fire
Flitched lintels – timber lintels having mild steel plates at top and bottom for
giving additional strength to timber lintel
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6. (b) Stone lintels
Used specially where is stone is abundantly available
Used upto spans of 2m
For wider spans stone slabs are kept on edge
Weak in tension
✓it cracks if subjected to vibratory loads
Dressed stone – good architectural appearence
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7. (c) Brick lintels
Not structurally strong
Used for span upto 1m and light loads;depth:10-20cm
Bricks are placed on edge or end
Constructed over temporary wooden centering
i)Joggled brick lintel bricks with frogs filled with mortar increases
shear resistance of joints
ii)Reinforced brick lintel when loads are heavy or span is more
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9. (d) Steel lintels
•Used when opening is large and loads are heavy
•Consists of RSJ or channel sections either used singly or in combination
of two or three units
•When used singly, they are embedded in concrete or cladded with stone
facing so as to increase its width(same as wall thickness).
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10. Thank You…