Concrete structure be entirely free of expansion joints, Civil Engineering

Assignment Help:

Question
Would a concrete structure be entirely free of expansion joints and contraction?

Answer
Consider that concrete structure is not subject to problem of disparity settlement. For contraction joints, it might be possible designing a concrete structure without contraction joints. Using sufficient steel reinforcement to spread equally crack width over span length of structure, it might achieve requirement of minimum crack width and cause no undesirable impact to aesthetics of structure. Though, it follows that amount of reinforcement required is higher than that with sufficient contraction joints.

For expansion joints, consequence of not providing such joints could be complex to cater for. As in, a concrete structure has coefficient of thermal extension of 9x10-6 /C and a Young's modulus of 34.5kN/mm2. With incensement of temperature of 20oC and it is confidential to free expansion, then structure is subject to axial pressure of 6.21MPa. If structure is especially slender as in concrete carriageway, buckling could occur. As a result, structure has to be designed to get up these thermal stresses if development joints are not offered. Still, for water retaining structures, mainly of them are not affected by weather conditions as they are insulated from water they have internally and soil backfill that surround them. So, it is expected that smaller quantity of thermal movement will happen when compared with regular exposed concrete structure. Therefore, development joints could be lost in this case with view that compressive stress induced by thermal expansion toughens structure to limit increase of tensile stress.


Related Discussions:- Concrete structure be entirely free of expansion joints

Define the influence line-beam shear, Define the Influence line-beam shear?...

Define the Influence line-beam shear?   1.  Replace point of interest with a link element of nominal length.  If the point of interest is a reaction, place a hinge at that poin

Wearing course or additional thickness be designed on piers, Question S...

Question Shall layer of wearing course or additional thickness be designed on surface of piers ? Answer In designing of piers , considerations have to be given to

Define the both inside clearance and outside clearance, The inner diameters...

The inner diameters of a sampling tube and that of a cutting edge are 70 mm and 68 mm correspondingly, their outer diameters are 72 and 74 mm respectively. Verify the inside cle

What is the negative skin friction, A square pile group of 16 piles passes ...

A square pile group of 16 piles passes by a filled up soil of 3 m depth. The pile diameter is 25 cm and pile spacing is 75 cm. If the unit cohesion of the material is 18 kN/m 2 an

Settlement due to increasing load on surrounding soil, Q. Settlement due to...

Q. Settlement due to Increasing Load on Surrounding Soil? When any portion of the ground surface  has been loaded, it causes  the surface  of adjacent soil also to tilt and set

Computer programming, compare 2 numbers and print either the message identi...

compare 2 numbers and print either the message identifying the greater than number(or) the message starting that both number are equal

Steel, sir i want to know that which pages of IS800:2007 is used for steel ...

sir i want to know that which pages of IS800:2007 is used for steel design of tension member, compression member, collumn, beam, connections, trusses etc.. please give me the topic

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd