Burj Khalifa

The tower is designed by Skidmore, Owings and Merrill, which also designed the Willis Tower (formerly the Sears Tower) in Chicago, United States and the new One World Trade Center in New York City, USA among numerous other famous high-rises.

observatory- speed 18m/cm

not in Burj khalifa but has villa in palm tree island

Six years. 2004-2010

DESIGN OF AXIALLY LOADED COLUMN (SQUARE)

15.1 Data :

Column No. : ………. Load on column = …………..KN.

Design constant a) Grade of concrete = ……….. b) Grade of steel = ………..

L = Unsupported length of the column in mm = …………mm

Design load Pu = 1.5 x …………. = ………….. KN.

Assume percentage of comp. steel between 0.8 to 6% of gross c/s area

Assume Asc = … …%Ag = , Ac =………%Ag

MAHARASHTRA STATE BOARD OF TECHNICAL EDUCATION ♦ 31

Design of structures (RCC) Exercise No. 1

15.2 Find the section of the column (Ag):

Pu = 0.4 fck Ac +0.67 fy Asc

=………………………..

Ag = ………………… mm2.

Adopt square column. Size of column =……….x…………. mm Say ……… X ………mm.

15.3 Find the No. of bars (not less than 4)

Asc = ……. % Ag

Calculate no. of bars

For ∅ = …….. No of Bar = N1 = = ------- =

For ∅ = …….. No of Bar = N2 = = …………… =

Use diameter of bars not less than 12 mm

15.4 Lateral ties.

a) Select diameter of lateral ties least of

5 mm or 1/4 diameter of the largest longitudinal bar not less than16 mm diameter.

Diameter of the lateral ties / link = ………. mm

b) Spacing of lateral ties / link Least of

i) Least lateral dimension of column =…………..mm

ii) Sixteen times the smallest dia. of bar = 16 x ……=………..mm and

iii) 300 mm

Provide … mm dia. @ ………. C/c

15.5 Check for minimum eccentricity

e min >/

0.05 D =……………..= ………….mm > e min

e min = 20 mm

L = Unsupported length of the column in mm

D = Lateral dimension of column in the direction under consideration in mm

32 ♦ MAHARASHTRA STATE BOARD OF TECHNICAL EDUCATION

Exercise No. 1 Design of structures (RCC)

15.6 Summary of design :

1. Column size ……………x…………. mm

2. Longitudinal Steel ………………………………………….

3. Lateral Steel ……………………………………………

Note : Draw the diagram showing the reinforcement details for the above column on

drawing sheet with the guidance of teacher.

16.0 DESIGN OF PLINTH BEAM

16.1 Data :

Sr. No. (from load calculation sheet) = beam mark =

Design constant a) Grade of concrete = b) Grade of steel =

span = -------m.

Singly Reinforced Rectangular Beam

Maximum load = ----------kN

Factored load = -----------kN

Given Fact B.M. = ..................................kN. m.

Fact S.F. = ...................................KN.

16.2 Find dimension of rectangular beam

Mu lim = Mu

Mu = 0.148 fck bd 2 for Fe 250 steel

= 0.138 fck bd2 for Fe 415 steel

= 0.133 fck bd2 for Fe 500 steel

Assume b = ……………. (Generally equal to width of the wall or 230 mm)

Mu = ....................................

=

d2 =

d = ...............................mm Say ------- mm

(Assume diameter of bar)

Over all depth (D) = d+ + cover ( Assume 25 mm cover)

D = ..................mm

Round up the value of D say ………..mm

d = D - - cover

d = .........................mm

:. b = ..........................mm

MAHARASHTRA STATE BOARD OF TECHNICAL EDUCATION ♦ 33

Design of structures (RCC) Exercise No. 1

16.3 Find Longitudinal steel.

= ………………………………………

=................................m m2

Calculate no. of bars

For ∅ = …….. No of Bar = N1 = = ------- =

For ∅ = …….. No of Bar = N2 = = …………… =

Provide --- # -- mm ∅ bars

16.4 Design of shear reinforcement.

1. Find nominal shear stress τv = = …………….

= .......................N/mm2

2. Find shear strength of concrete (τc)

With referring IS 456 - 2000 clause

Pt =

Pt = ...................... %

find τc =

τc = .................. N/mm2

3. Compare

a) if τv < τc Provide nominal shear reinforcement.

b) if τv > τc Design shear reinforcement.

a) When τv < τc Provide nominal shear reinforcement as fallows :

Assuming -- mm Ø two legged M.s. stirrups.

Asv =2 x π/4 x d2 = ……….=………..

Spacing of stirrups Sv ≤

= ……………….. = ………….. mm

34 ♦ MAHARASHTRA STATE BOARD OF TECHNICAL EDUCATION

Exercise No. 1 Design of structures (RCC)

Spacing should be less than …….

1. as calculated = ………..mm

2. 0.75 d = 0.75 x ……. = …….mm

3. 450 mm.

Provide -- mm ∅ two legged M.S. stirrups @ ----mm c/c.

b) when τv > τc Design shear reinforcement as fallows :

Find shear to be resisted Vus

Vus = Vu - τc bd

= ............ - ...........

Vus = ......................N.

Find shear resisted by bent up bars

Vub = 0.87 fy Asv. Sin 450

= 0.87 x ............x................sin 450

Vub =....................... N

Contribution of bent up bars should not be greater Vus / 2

Shear to be resisted by stirrups Vus

V'us = Vus - (Vub or Vus / 2 whichever is lesser)

= ……… - ………..

=…………

Assuming -- mm Ø two or …. legged M.s. stirrups.

Asv =2 x ð/4 x d2 = ……….=……….. mm2

Spacing of stirrups Sv ≤

= ……………….. = ………….. mm

Spacing should be less than …….

1. as calculated = ………..mm

2. 0.75 d = 0.75 x ……. = …….mm

3. 450 mm.

Provide -- mm ∅ two or …. legged M.S. stirrups @ ----mm c/c.

Tom Cruise climbed burj khalifa in ghost protocal.

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The 163-story Burj Khalifa is owned by Emaar Properties, a business founded by billionaire Mohamed Ali Alabbar, but it was built by Samsung C&T of South Korea, BESIX of Belgium, and Arabtech of the United Arab Emirates.

Burj Nahar is located in Deira, Dubai, near the intersection of Al Rigga Road and Al Muraqqabat Road. It is situated close to the popular Al Ghurair Centre and is easily accessible from major roads in the area. The tower serves as a prominent landmark, showcasing traditional Islamic architecture amidst the modern cityscape.

Yes actually there have! The concrete used to build the tower could not be poured in the day during summer because of the heat therefore builders had to put ice and pour concrete at night when the air was much cooler

The Burj Khalifa, located in Dubai, is designed primarily as a mixed-use skyscraper that serves various purposes, including residential, commercial, and hospitality functions. It aims to be a symbol of innovation and luxury, showcasing advanced engineering and architectural design. Additionally, it serves as a major tourist attraction, offering stunning views from its observation decks. The Burj Khalifa also plays a significant role in promoting Dubai as a global city and hub for business and tourism.

There is no released figure for power usage overall. But the peak power supplied is 36 MW.

Solar heating for hot water adds about 3.2 MW or about 690 MW-hours per year.

The decision to build Burj Khalifa is reportedly based on the government's decision to diversify from an oil based economy to one that is service and tourism oriented.

The Council on Tall Buildings and Urban Habitat has confirmed the official building height of Burj Khalifa at 828.00 meters (2716.54 feet), as well as the title of 'The World's Tallest Building'.

With the official completion of the building on January 4, the Burj Khalifa surpassed the previous 'World's Tallest' (Taipei 101) by 320 metres, an unprecedented increase of 61 per cent.

The Burj Khalifa has become the 16th building to hold the title of the 'World's Tallest' and stands an additional 773 meters higher, or 15 times taller, than the world's first 'tall building' (the Home Insurance Building completed in Chicago in 1885).

32.8 feet per second or 10 meters per second.