Presentation on Lintels and Arches Course title: Details of construction Course code: CE- 2110

Submitted to:MD. Motiur Rahman Asst. Professor Dept. of Civil Engineering

Submitted by: MD. Rokib uddin- 141123

Group : 5

LINTELSA lintel is a structural horizontal block that spans the space or opening between two vertical supports.

It can be a load-bearing building component, a decorative architectural element, or a combined ornamented structural item. It is often found over portals, doors, windows, and fireplaces.

TYPES OF LINTELS BY MATERIALS

Wooden lintels

Stone lintels

Brick lintels

Reinforced Brick lintels

Reinforced Concrete lintels

Steel lintels

WOODEN

LINTELS Generally used in hilly areas where timber is

easily available

It is not fire proof

The minimum depth of the lintel should be 7.6

cm.Fig: Wooden lintels

STONE LINTELSCommonly used in

stone districts

It is highly cost

The thickness is taken as 4 cm per 30

cm length of span Fig: Stone lintels

BRICK LINTELS They are

considered suitable for small openings with light loading

conditions.

It is constructed with hard, well

burnt, first class bricks.

Fig: Brick lintels

REINFORCED BRICK LINTELS

It is required in large span

The gap of bricks is filled with rich cement mortar

Reinforced Brick lintel

REINFORCED CONCRETE LINTELS

It is used for durability, strength and fire

resisting property.

It is used for bigger span and heavy loading.

It is constructed with 1:2:4 cement concrete

reinforced with steel bar.Fig: Reinforced Concrete lintel

STEEL LINTELS It is used in a

large opening carrying heavy

wall load is to be spanned by a

lintel Steel lintel

ARCHES An arch may be defined as mechanical arrangement of wedge shaped blocks of stones or bricks mutually supporting each other and supported at the end by piers or abutments.

Arches

TECHNICAL TERMS

Abutment Arch ring Intrados Extrados Voussoirs

Springing stone Springing line

Crown Key stone Skew back

Span Rise

Springing points Depth

Haunch Spandril

TYPES OF ARCHES BY MATERIALS AND CONSTRUCTION

1. Brick arches

2. Stone arches

3. Concrete arches

4. Flat arches

5. Semi circular arches

6. Segmental arches

7. Relieving arches

8. Dutch or French arches

BRICK ARCHES

It is three types:

Rough arches: Generally used over wooden lintels.

Axed arches: The wedge shaped units are not finely

dressed.

Gauged arches : Accurately prepared to a wedge shape.

Fig: Rough brick arches

Fig: Axed brick arch

STONE ARCHES Two types:

1. Rubble arches: Rubble stone and roughly shaped.

2. Ashlar arches: Arch stone and proper shaped.

Flat stone arches Semi circular stone

arches

Flat stone arches

Semi circular stone arch

CONCRETE ARCHES

Two types :

1.Concrete block arches: For small opening and

span.

2. Monolithic Concrete arches: For large opening

like roof, bridge etc.

Fig: Concrete block arches

Monolithic Concrete Arches

OTHER TYPES OF ARCHESSegmental

arches

Semi circular arches Semi circular Arches

OTHER TYPES OF ARCHES

Relieving Arch

Dutch or French Arch

Fig: Relieving Arch

Fig: Dutch or French Arch Thank you……