Port+and+Lintel

Post and Lintel System:

Two upright members (post, columns, piers) Third member (lintel, beam, girder, rafter) The basis for the evolution of all openings To support the weight of the structure located above the openings

Lintel:

Function: - To bear the loads that rest on it (and its own load) without deforming or breaking - To support the masonry above a window or door opening.

Failure : material too weak or lintel too long In non-classical architecture for ornamental purposes, no structural function

-Made of wood, stone, steel or reinforced or pre-tensioned concrete -Stone lintels must be short, weak in bending -Materials strong in bending, bigger span, greater openings -Mansory lintels are inefficient

Description of Post:

• The job of the post is to support the lintel and its loads without crushing or buckling. • Masonry post, including those of brick, may be highly efficient, since the loads compress the joints and add to their cohesiveness.

Disadvantages of post and lintel system:

→ The biggest disadvantage to a post and lintel construction is the limited weight that can be held up, and the small distances required between the posts. → The **tension** induced by deformation of self-weight and the load above between the posts.

Evolution of the uses of post and lintel: Stone - Brick - Wood - Cast Iron - Concrete - Steel - Stucco

Conclusion: -Lintels should be strong in bending -Post should be especially strong in compression -Lintel construction is the limited weight that can be held up -Combine materials make a better develop of the post and lintel system