Civil Engineering

Plastic Section Modulus about the element local y-direction

pretensioning is the process of inducing reverse stresses to concrete prior to design loading so as to achieve slender sectins thereby reducing cost. disadvantages of pretensioning are losses due to slip, etc

if the bar length is 5o m , what will be the actual length including lap length

No because by definition

Carcinoma in situ is the CA which is confined to the its original wall or place

However the invasive means a CA which is invading surrounding area

Camber is the amount of deflection provided in the opposite direction of loadings. That is when the beam is subjected to Vertical downward loadings, the beam has a tendency of deflecting downwards. In this case, camber value is to be given in the upward direction so that when it is fully loaded condition, the beam would have almost zero deflection. Similarly, when the beam is subjected to vertical upward loadings, the camber value is to be given in downward direction.

The purpose of camber in steel beam is to have almost zero deflection w.r.t.o beam axis after loading of beam as highlighted earlier.

by R.Ravichandran, Chennai-49

asymmetrical N-truss Bridge.

JCB stands for the founder of the company Joseph Cyril Bamford

hi, im not absolutely sure but i think my geography teacher said once that its to help absorb sock in case of an earthquake

The type of bridge hung from cable is called Suspension Cable
A cable suspension bridge is a kind of bridge hung from cables.

The world's largest tunnel boring machine (TBM) is the Herrenknecht S-317 (Shanghi) with a shield diameter of 15.43m. see the related links for more info (videos & photos & data) BUT there is some dispute: on the web there is this quote: The biggest ever built was used to excavate Gotthard Base Tunnel - 19 meters ... The Worlds Largest Hard-Rock Tunnel Boring Machine - STRABAG AG-. However, as of January, 2009, I am unable to find further info about this reference.

The portal and cantilever methods are two approximate methods for analysing tall buildings for lateral (wind or siesmic) loads - nowadays used for preliminary design purposes.

The portal method is suitable for buildings likely to deform in shear mode. It is based on the distribution of base shears proportional to influence areas.

The cantilever method is suitable for slender buildings likely to deform in flexure mode. It is based on distribution of base moment as axial forces on columns proportional to their distance from centroidal axis of the building.

send me ur email , I can send my information to ur email about design and analysis storage tank with ansys

research118118@yahoo.com

Civil Engineer may face many problems while designing and constructing the roads. Some may be minor problems and some may be huge problems.

Minor Problems:

1. Workers problems

2. Transportation of instruments

3. Errors on Maps

Major Problems:

1. Conflicts between the local people

2. Political Interference

3. Increase in market price effects the economic estimation of roads

Specifics vary by mix, but 25% compaction is the general rule of thumb.

A cantilever is a beam supported at one end. A diving board is anchored at one end and hangs out over the pool. It's a cantilever. More can be learned by using the link and looking at some pictures while reading the Wikipedia article.

Depending on the size of the jet, the amount of engines may vary between 2 and 4 (on most commercial aircraft)

The engines can be fixed to the wings, integrated in the tail, or above the stabilizers in the rear of the plane.

M20 refers to the grade of the concrete generally used in construction purpose. Here, M refers to mix & number 20 refers to the characteristic strength of concrete. the proportions of this grade is (1:1 1/2: 3). Along with this there are some more grades used in constructions i.e., M5, M7.5, M10, M15, M25, M30................. M80

Nominal data is characterized as data that is used to define a group of category. Some examples include color of eyes, and color of hair.

A capacitor that is suddenly connected to a battery will charge to the battery voltage. The time to do this is dependent on the current capacity of the battery and wiring, and the capacitance of the capacitor. This represents an instantaneous short circuit, which lasts for a (usually) very short time - but damage could be done if there was no resistance.

A charged capacitor that is suddenly disconnected from a battery will hold that voltage. The length of time it will hold is dependent on how much leakage current there is.

If you mean drill horizontally through the dirt,, I'm no engineer but fitting a length of pipe with a water tap then extend the pipe as the water washes away the dirt from the working end under the slab and flushes out the sediment seems like it would work.

We use y_y axes

Yes as the rusts will still develop if the concrete slab still moist. The strength is not as good as the good mesh.

Sub Structure

Ordinary Portland cement is suitable. As per IRC 21, Portland Pozzolana Cement is limited for Plain Concrete only.

Its use to determine the suitability of a soil for the proposed project, and to determine the elastic limit of a soil