POST-LINTEL STRUCTURE

STRUCTURAL METHOD

POST-LINTEL STRUCTURE

POST-SLAB STRUCTURE

WALL SLAB STRUCTURE

STEEL STRUCTURE

COMPOSITE STRUCTURE

POST & LINTEL

Simple form of construction involving posts carrying horizontal beams or lintels, as in timber-framed work or in columnar and trabeated architecture.

Ancient Egyptian and Ancient Greek architecture was of this type, using stone.

Stonehenge is an example of post and lintel construction

Structural Shapes

Structural Shapes, Roofing, and Framing

POST & LINTEL SYSTEM

Post Lintel is a Frame structure Use of Concrete Materials, Mixing of aggregate,

gravel, sand, Cement with water. It may be lightweight or heavy weight structure. Mixing ratio: 1:2:4, 1:3:6 & 1:1.5:3 etc In more recent time it has been found possible to

produce steels. According to many codes & specifications such as 80ksi, 60ksi, & 40ksi etc.

60ksi steel is most commonly used.

FOUNDATION

The foundation is the part of a structure that is usually placed below the surface of the ground & that transmits the load

to the underlying soil or rock.

FOUNDATION TYPE

Footing

• Wall Footing

- R.C Wall

- Masonry Wall

• Column Footing

- Rectangular

- Square•Combined Footing

Pile

Mat, Raft or Deep Foundation

COLUMN FOOTING

1/2''Ø Rod 4'' C/C

3/8'' Ø Tie

G.Beam

Brick Wall

LONG

GB

3"3"

P.L.

E.G.L.

18''

2'-6''

15''

12''

3'-6

''

3'-6''

TYPICAL COLUMN

FOOTING PLANTYPICAL COLUMN

FOOTING SECTION

COLUMNA column is a vertical support structure.According to ACI Code : Rectangular column _

Minimum 96 in² or 8’’X12”, steel 4 bars, Tie 3/8’’ dia or ½’’ dia.Spiral column – Minimum 100 in² , 10’’ dia steel 6 bars, Tie 3/8’’ dia , Not exceed than 3’’ & less than 1’’

Circular Column

10''

10''10''

10''

8''

12''

Rectangular Column Square Column

ECONOMICAL COLUMN

SPAN

COLUMN SIZE

Column size not less than

10“x10” for ACI code

15'-0" to 21'-0"

depends on ground floor

perking & drive way

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COLUMN SPAN & SIZE

DOUBLE HEIGHT COLUMN THICKNESS

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Double height column depends on slender test of column or effective length of column buckling For member with h/t up to 10 (approximately h/r up to 35) For column with h/t = 20 (approximately h/r up

to 70) R became 0.07

Team roll of dabble height column thickness, If column length is upward for axial load then column

section is enlarge for a column.

BEAM

The beam is a very sturdy structure. A beam is a horizontal pole. It is usually shaped as a rectangle so there is more balance between the poles. A beam is held up by one or two columns. If there are two columns, they are placed on either side of the beam. If there is one column, it is placed in the middle of the beam so each side is balanced. Beams are found in many places - in buildings, in homes, and in moving structures.

DISTRIBUTION LOADS

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Distributed Load

DISSTRIBUTED LOAD

SECTION OF BEAM

Concentreted Load

SECTION OF BEAM

Concentrated Load

BEAM TYPES

According to Reinforcement there are two types of beam : Single reinforcement beam

Reinforcement bar are used in the tensile zone.

Double reinforcement beam Reinforcement bar are used in the tensile & Compression zone.

SINGLE REINFORCEMENT

BEAM SECTION

DOUBLE REINFORCEMENT

BEAM SECTION

BEAM TYPESAccording to Support there are four types of beam :

Simply Supported Beam

One end Continuous Supported Beam

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BEAM TYPES

Both end Continuous Supported Beam

Cantilever Beam

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Clear span of column & the beam thickness is convert to inches for column span length. For an example column span clear 20’-0” so for this region beam thickness 20” for this span

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20’

Column Span

12”

20”

BEAM THICKNESS

Structural Joint

Joint of Beam & Column

Beam

Column

ECONOMICAL CANTILEVER PORTION

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we use to cantilever not less then 5’-0”

for open side on a support. But its

depends on overturning moment should

be balance by type of load or embedded

layer.

POST-LINTE STRUCTURE SLAB

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SLABThere are two type of slab use in post lintel structural systemOne-way slabA one-way slab is essentially a rectangular beam of comparative large ratio of width depth. And steel use to short direction of slab.

One Way Reinforcement Slab

20'-0"

45'-0"

Bot

om w

ith

alt

.Ck

d.

10 m

m Ø

@ 6

" C

/C S

td.

POST-LINTE STRUCTURE SLAB

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Two way slabMost rectangular reinforced concrete slab are supported on all four side by beam , girders or walls.

20'-0"

20'-0"

Botom with alt.Ckd.10 mm Ø @ 6" C/C Std.

Bot

om w

ith

alt

.Ckd

.10

mm

Ø @

6"

C/C

Std

.

12 mm Ø Extra top

Two Way Reinforcement Slab

POST-LINTE STRUCTURE SLAB

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SLAB THICKNESSwe are use to thump roll of structural system for slab thickness

T = Parameter180

For example for a slab T = 2 X (ax b) x 12180

Minimum slab thickness for ACI codea) Simply Supported L / 20b) One end continuous L / 24c) Both end continuous L / 28d) Cantilever L / 10

STAIRIN THE POST LINTEL STRUCTURE THERE USED THREE TYPES OF STAIR SECTION.

1. BEAM HANGING FROM LANDING LEVEL.2. BEAM INVERTED ON LANDING LEVEL.3. BEAM HANGING FROM SAME AS SLAB LEVEL.

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3'-

9"

5"

3'-

9"

6"5"4'-2"10"10"10"10"10"10"10"10"10"2'-6"

AA

UP

STAIR PLAN

STAIR SECTIONS

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10"

6"

10"

6"

SECTION : A-A

INVERTED BEAM IS USED IN LANDING LEVEL BEAM IS HANGING FROM THE LANDING LEVEL BEAM POSITION IS SAME TO SLAB LEVEL

SECTION : A-ASECTION : A-A

6"

10"

6"

10"10"

6"

10"

6"

1'-9

"1

'-0"

3"

7'-0

"

10'

-0"

3'-0

"

3'-0

"

3'-0

"4"

ROOF

4" L.C

NET

4"

Ø P

VC

SO

IL P

IPE

1"

Ø P

VC

VE

NT

PIP

E

DETAIL OF SANITARY PIPING

TYPICAL SECTION OF A/C HOLE

1'-8

" AC

10'-0

"

1'-8"

FLOOR

5'-4

"3

'-0"

FLOOR

DETAIL-G

1" THICK PLASTER

SANITARY & AC SECTION

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Post lentil it self a farm structure

Out side exposed

structurally sound

structurally sustainable

usually it is economical

environmentally and earth quick save.

Beam-Column Image of Architecture

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Expression

Post & lintels are shown as frame structures. But columns & louvers.

Solid & void relationship is less. The invert beam can be seen from above. Presence of continuous beam Columns are placed along the age of the

building.

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POST-LINTE ADVANTAGES

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AESTHETICSAesthetically this structural system seems quite sound by using the expression of post-lintel structure in the exterior facades.

Sometimes the heavy or rigid masses are treated politely by using the framework of the post-lintel which gives an extra ordinary looks.

SPAN & SPACELarger span (column to column distance) of building is possible to design in this system.

For the large span the lintel height become larger for this a large space seems small, as the lacking of clear height.

Sometimes this problem creates visual disturbance, which is avoided, in flat slab.

POST-LINTE ADVANTAGES

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ECONOMICThe construction cost of this system is slightly high for the time consuming casting of beam and slab and the use of R.C.C.

The maintenance cost of this system remains lower than the other structural system for its long lasting characteristics.

CLIMATEConsidering the climate this system is more suitable for our country.

The admission of heat become reduced in this system, as the heat transferred from the slab to beam and then from the beam to floor.

The control of openings admits the little amount of heat in the building.For the free flowing plan light and ventilation can easily insert the building.

POST-LINTE ADVANTAGES

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ENVIRONMENT

This structural system having less self-loads which reduces the risk of danger of earth quack. It can resist the buckling or bending effect of the building from the strong wind flow. It has the capability of fire resistance for the construction material (R.C.C.).So this system is very much suiting with respect to our environment.

CONSTRUCTION TECHNICS

In this structural system construction process takes a long time for the casting of beam and slab because at first column and beam cast and after that the slab cast. High cost materials are used in this system. In post-lintel system ducting process is not so easier compared to Post-slab.

POST-LINTE ADVANTAGES

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OPENNINGSIn post-lintel system 50% area of the external facade is remaining for the openings of the building. For this there is a control over use of openings. The admass of light and ventilation is smaller compared to post-slab.

SUSTAINABILITYSustainability means the ultimate capacity of individual members and as well as the whole structure against any types of overloading such as cyclones, earth quacks, etc. Sustainability of structures may also termed as factor of safety because overloading is allowed only up to the safety level which was taken in considering at the time of design. Stability of any structure is the critical point of failure. If stability is not satisfied it limits the values, then the failure may come suddenly. This system has less possibility of failure than the other structural system.

POST-LINTE ADVANTAGES

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FLOOR SLABFloor slab is a slab supported on ground generally distribute load to the ground uniformly. It also increases the bearing capacity of soil as the load distributes combined.

SOLID-VOID RATIOBy using the framework of post-lintel system we can make a sense full solid-void ratio which illuminate the monotonous effect.

CANTILEVER OR OVERHANGThe portion of any structure that is over hanged without any support termed as cantilever. Sometimes cantilever construction is economical and looks aesthetically attractive which may become a useful part of that structure.

Limitation

Extreme variation of solid & is not possible. Opening should be place considering the post. Stair must start with respect to a beam. Building height increases for the beam to get clear

Space. Also duct for air conditioning are used under beam, so

floor height increases which is not acceptable for height. This system more costly (30%more)than wall slab

system. But economic range can be kept in a lower gird when

the span is limited 15’ to 25’. Uninterrupted vast space can not be created without

using vault dome or waffle.

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POST-LINTEL STRUCTURE

Rokko HousingArchitect Tadao Ando

Example

ROKOKO HOUSING

ARCHITECT

ANDO

THE WESTIN DHAKA

HIRSCH BEDNER ASSOCIATES

Example

MIRPUR C.R.P HOSPITALSECTION-14, MIRPUR, DHAKAARCHITECTMD.RAFIQ AZAM

Example

LAYOUT PLAN

BASEMENT PLAN

GROUND FLOOR PLAN

3RD FLOOR PLAN

NORTH ELEVATION

SOUTH ELEVATION

EAST ELEVATION

WEST ELEVATION

SECTION

SECTION

VIEW OF C.R.P

VIEW OF FRAM

VIEW OF FRAM STRUCTURE

Example

EQUITY INSIGNIAROAD NO : 01, KHULSHI , CHITTAGONG.ARCHITECTMAMNOON M. CHOWDHURY.MAHMUDUL ANWAR RIYAAD.

LAYOUT PLAN

7

6

5

4

3

2

1

A B C D E F G H

HGFEDCBA

1

2

3

4

5

6

7

A1

A1

FOOTING LAYOUT PLAN

CF-1

A1

A1

F-1

F-1 F-1

F-1

F-2 F-2

F-2 F-2

F-2 F-2

F-2F-3F-3

F-3F-3

F-3

F-3

F-4F-5 F-5

F-5 F-5

F-5

F-6

F-7

F-6

1

2

3

4

5

6

7 7

6

5

4

3

2

1

A B C D E F G H

HGFEDCBA

GROUND FLOOR PLAN

5'-7"

FIXED GRILL (FLOOR TO 7'-0")

GRILL DOOR

FIXED GRILL (FLOOR TO 7'-0")

FIXED GLASS

ELECT. RISERS

ELECT. RISERS

1

2

3

SUBSTATION &

GENERATOR ROOM

UP

+2'-0"

+2'-0"

+2'-0"

+2'-0"

+2'-0"

+2'-0"

SEPTIC TANKLOCATION OF

OU

T D

OO

R M

ETA

L H

AL

LID

E

PR

OP

OS

ED

U

GR

LO

CA

TIO

N

TA

P F

OR

C

AR

WA

SH

5"X

4'-2

" H

IGH

BR

ICK

WA

LL

PR

OP

OS

ED

LO

CA

TIO

NO

F D

EE

P T

UB

EW

ELL

GAS RISER

NA

ME

PL

ATE

DRIVERS' COMMON

ROOM

CARETAKER'S

CARETAKER'S

GA

S R

ISE

R

D R I V E W A Y

+1'-6"

EN

TR

Y

A

D R I V E W A Y

+0'-0"

C-01

A

C-02C-03 C-04 C-05 C-06

C-15 C-14 C-13 C-12 C-11

C-07

C-08

C-09

C-10

METER ROOM

M.S

. SL

IDIN

G G

ATE

(SE

E D

ETA

IL)

GUARD

ROOM

GREEN

GARDEN

D R

I V

E

W

A

Y

+2'-6"

TYPICAL FLOOR PLAN

2

3

1

A A

2ND FLOOR(+24'-6")

1ST FLOOR(+14'-6")

3RD FLOOR(+34'-6")

4TH FLOOR(+44'-6")

5TH FLOOR(+54'-6")

6TH FLOOR(+64'-6")

7TH FLOOR(+74'-6")

8TH FLOOR(+84'-6")

ROOF(+94'-6")

SLAB THICKNESS FOR CANTILEVER PART WILL

NOT EXCEED 5"

PARKING LEVEL(+1'-6")

ROAD LEVEL(±0'-0")

BRICK CLADDED SURFACE

PLASTERED SURFACE PAINT

FRONT ELEVATION

SLAB THICKNESS FOR CANTILEVER PART WILL NOT EXCEED 5"SEE 3D & SECTION

SLAB THICKNESS FOR CANTILEVER PART WILL NOT EXCEED 5"LINTEL SLAB OF 8TH FLOOR

13'-0"

10'-0"

10'-0"

7'-1"

AC

AC

AC

AC

AC

AC

AC

AC

AC

AC

AC

AC

AC

AC

AC

2ND FLOOR(+24'-6")

1ST FLOOR(+14'-6")

3RD FLOOR(+34'-6")

4TH FLOOR(+44'-6")

5TH FLOOR(+54'-6")

6TH FLOOR(+64'-6")

7TH FLOOR(+74'-6")

8TH FLOOR(+84'-6")

ROOF(+94'-6")

PARKING LEVEL(+1'-6")

ROAD LEVEL(±0'-0")

NORTHT ELEVATION

SECTION

6'-7"

7'-0"

7'-5"

8'-8"

8'-3"

5"

3"

LEVEL +15'-0"8'-8"

7'-0" 10"

6"

10

'-0"

3'-

6"

CONFIRM HEIGHT FROM LIFT SUPPLIER

3'-

0"

8'-

0"

13

'-0"

5'-

0"

6"

OVER HEAD WATER RESERVOIR

10

'-0"

3'-

0"

3RD FLOOR(+35'-0")

4TH FLOOR(+45'-0")

5TH FLOOR(+55'-0")

6TH FLOOR(+65'-0")

7TH FLOOR(+75'-0")

8TH FLOOR(+85'-0")

ROOF(+95'-0")

8'-

0"

5'-

0"

10

'-0"

10

'-0"

10

'-0"

10

'-0"

10

'-0"

10

'-0"

10

'-0"

10

'-0"

10

'-0"

10

'-0"

10

'-0"

10

'-0"

10

'-0"

7'-

0"

3'-

0"

3'-

0"

7'-

0" 1

0'-

0"

3'-

0"

7'-

0" 1

0'-

0"

10

'-0"

7'-

0"

3'-

0"

10

'-0"

7'-

0"

3'-

0"

10

'-0"

7'-

0"

3'-

0"

10

'-0"

7'-

0"

3'-

0"

10

'-0"

11

'-0"

6'-

6"

LIFT CORE

LEVEL +1'-6"

LEVEL +2'-6"

UNDER GROUND WATER RESERVOIR

10

'-0"

12

'-6"

3'-

0"

7'-

0" 1

0'-

0"

13

'-6"

PARKING LEVEL(+1'-6")

ROAD LEVEL(±0'-0")

2ND FLOOR(+25'-0")

1ST FLOOR(+15'-0")

0"1'-3"

3'-6"

2ND FLOOR(+25'-0")

1ST FLOOR(+15'-0")

3RD FLOOR(+35'-0")

4TH FLOOR(+45'-0")

5TH FLOOR(+55'-0")

6TH FLOOR(+65'-0")

7TH FLOOR(+75'-0")

8TH FLOOR(+85'-0")

ROOF(+95'-0")

3" BRICK CLADDING

SLAB THICKNESS FOR CANTILEVER PART WILL

NOT EXCEED 5"

3" SKIRTING

PARKING LEVEL(+1'-6")

ROAD LEVEL(±0'-0")

3'-7"

4'-0"

10

'-6"

6"3"

9'-3"

9'-3"

3"

6"

9'-3"

3"

6"

9'-3"

3"

6"

9'-3"

3"

6"

3"

3"

7'-0"

4'-0"

6"

5"

6"

3'-0"

3"

6'-9"

3'-0"

3"

6'-9"

3'-0"

3"

6'-9"

3'-0"

3" SKIRTING

ROAD LEVEL(±0'-0")

PARKING LEVEL(+1'-6")

ROOF(+94'-6")

8TH FLOOR(+84'-6")

7TH FLOOR(+74'-6")

6TH FLOOR(+64'-6")

5TH FLOOR(+54'-6")

4TH FLOOR(+44'-6")

3RD FLOOR(+34'-6")

1ST FLOOR(+14'-6")

2ND FLOOR(+24'-6")

13

'-6"

10

'-0"

10

'-0"

10

'-0"

10

'-0"

10

'-0"

10

'-0"

10

'-0"

10

'-0"

10

'-0"

2'-6"

7'-6"

3'-6"

3"

6'-9"

3'-0"

3"

6'-9"

3'-0"

3"

6'-9"

3'-0"

3"

6'-9"

3'-0"

3"

6'-9"

6'-9"

3'-0"

6"3"

9'-3"

6"3"

9'-3"

6"3"

9'-3"

6"

3" BRICK CLADDING

1'-6"

1'-6"

6"

2'-0"

6"

7'-0"

6"

6" 3'-6"

10

'-0"

3'-6"

7'-0"

3'-0"

3'-0"

7'-0"

3'-0"

7'-0"

3'-0"

7'-0"

3'-0"

7'-0"

3'-0"

7'-0"

3'-0"

7'-0"

3'-0"

7'-0"

3'-9"

6'-3"

10

'-0"

10

'-0"

10

'-0"

10

'-0"

10

'-0"

10

'-0"

10

'-0"

10

'-0"

10

'-0"

13

'-6"

1'-8"

SCALE : not to scale

SECTION : 1-1

ROOF(+95'-0")

8TH FLOOR(+85'-0")

7TH FLOOR(+75'-0")

6TH FLOOR(+65'-0")

5TH FLOOR(+55'-0")

4TH FLOOR(+45'-0")

3RD FLOOR(+35'-0")

1ST FLOOR(+15'-0")

2ND FLOOR(+25'-0")

SECTION:2-2

SCALE : not to scale

PARKING LEVEL(+1'-6")

ROAD LEVEL(±0'-0")

3" SKIRTING

SLAB THICKNESS FOR CANTILEVER PART WILL NOT EXCEED 5"

ROAD LEVEL(±0'-0")

PARKING LEVEL(+1'-6")

3" BRICK CLADDING

3'-0"

7'-0"

3'-0"

7'-0"

3'-0"

3'-9"

6'-3"

6'-9"

5"

12

'-1"

13

'-6"

10

'-0"

10

'-0"

10

'-0"

10

'-0"

10

'-0"

10

'-0"

10

'-0"

10

'-0"

10

'-0"

2'-6"

7'-6"

7'-0"

3'-0"

7'-0"

3'-0"

7'-0"

3'-0"

7'-0"

3'-0"

7'-0"

3'-0"

7'-0"

SCALE : not to scale

SECTION:3-3

4'-0"

10

'-6"

6"

6'-9"

6"

2'-0"

6"3

"6

'-9"

6"

2'-0"

6"3

"6

'-9"

6"

2'-0"

6"3

"3"

6"

2'-0"

6"

6'-9"

3"

6"

2'-0"

6"

6'-9"

3"

6"

9'-3"

PART SECTION

Niaz ahmad zawad-ug-09-06-05-007Md. Jahangiralam-ug-09-06-05-014Shirin akhter-ug-09-06-05-018

THANK YOU EVERYBODY.