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Messages - Shihab Ahammed

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Geotechnical Engineering / Limitations of Plate Load Test
« on: February 29, 2020, 12:02:26 AM »
Plate load test is carried out to check the bearing capacity of foundation soils.

The limitations of plate load test are:

(i) It has limited depth of influence. It could only give the bearing capacity of soils with depth up to two times the diameter of plate.

(ii) It may not provide information on the potential for long term consolidation of foundation soils.

(iii) There is scale effect as the size of test plate is smaller than actual foundation
(iv) To gain access to test position, excavation is carried out which causes significant ground disturbance. The change in ground stress leads to the change of soil properties which the test is planned to investigate.

This question is taken from book named – A Self Learning Manual – Mastering Different Fields of Civil Engineering Works (VC-Q-A-Method) by Vincent T. H. CHU.



Structural Engineering / Burj Khalifa
« on: February 25, 2020, 09:56:05 PM »
The Burj Khalifa (Arabic: برج خليفة‎, Arabic for "Khalifa Tower"; pronounced English: /ˈbɜːrdʒ kəˈliːfə/), known as the Burj Dubai prior to its inauguration in 2010, is a skyscraper in Dubai, United Arab Emirates. With a total height of 829.8 m (2,722 ft) and a roof height (excluding antenna, but including a 244 m spire[3]) of 828 m (2,717 ft), the Burj Khalifa has been the tallest structure and building in the world since its topping out in 2009.[4][5]

Construction of the Burj Khalifa began in 2004, with the exterior completed five years later in 2009. The primary structure is reinforced concrete. The building was opened in 2010 as part of a new development called Downtown Dubai. It is designed to be the centrepiece of large-scale, mixed-use development. The decision to construct the building is based on the government's decision to diversify from an oil-based economy, and for Dubai to gain international recognition. The building was originally named Burj Dubai but was renamed in honour of the ruler of Abu Dhabi and president of the United Arab Emirates, Khalifa bin Zayed Al Nahyan;[6] Abu Dhabi and the UAE government lent Dubai money to pay its debts. The building broke numerous height records, including its designation as the tallest building in the world.

Burj Khalifa was designed by Adrian Smith, of Skidmore, Owings & Merrill, whose firm designed the Willis Tower and One World Trade Center. Hyder Consulting was chosen to be the supervising engineer with NORR Group Consultants International Limited chosen to supervise the architecture of the project. The design is derived from the Islamic architecture of the region, such as in the Great Mosque of Samarra. The Y-shaped tripartite floor geometry is designed to optimize residential and hotel space. A buttressed central core and wings are used to support the height of the building. Although this design was derived from Tower Palace III, the Burj Khalifa's central core houses all vertical transportation with the exception of egress stairs within each of the wings.[7] The structure also features a cladding system which is designed to withstand Dubai's hot summer temperatures. It contains a total of 57 elevators and 8 escalators.

Civil Engineering / Re: পরীক্ষা সমাচার ১
« on: June 17, 2019, 12:24:29 AM »

Water Resources Engineering / Re: Importance of Water
« on: March 29, 2019, 02:18:52 AM »

Water Resources Engineering / Re: Quotation
« on: March 29, 2019, 02:18:37 AM »

Structural Engineering / Bamboo as a Foundation
« on: March 27, 2019, 04:57:41 PM »
here is very limited use of bamboo as foundation material because when in contact with moisture laden surface they decay fast. However, this issue can be tackled to quite an extent though proper treatment using appropriate chemicals.

The various types of foundations constructed with bamboo are:

a) Bamboo which is in direct contact with ground surface.

b) Bamboo fixed to rock or preformed concrete footings

c) Composite bamboo or concrete columns

d) Bamboo piles

thanks for enlightening me

thanks for enlightening me

thanks for enlightening me

thanks for enlightening me

thanks for enlightening me

thanks for enlightening me

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