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What is Golden Ratio?
Preet Chovatiya
A golden ratio is a special number (greek letter phi) φ which value is around 1.618. many buildings and artworks have applied golden ratio such as Parthenon in Greece. Now let's take one rectangle of sides a and b so If you want to find the golden ratio then you have to calculate by the below formulRead more
A golden ratio is a special number (greek letter phi) φ which value is around 1.618.
many buildings and artworks have applied golden ratio such as Parthenon in Greece.
Now let’s take one rectangle of sides a and b so If you want to find the golden ratio then you have to calculate by the below formula.
a/b = a+b/a = φ = 1.618
See lessWhat is the reason behind the initial setting time of cement should not be less that 30min.?
sanjaypakad
In this time cement can be molded in any desired shape without losing its strength. This is the time at which the hardening of the cement starts and the only time available for mixing the paste and placing it in position. if this time less then 30 min then can’t molded in any shape in many situationRead more
In this time cement can be molded in any desired shape without losing its strength. This is the time at which the hardening of the cement starts and the only time available for mixing the paste and placing it in position. if this time less then 30 min then can’t molded in any shape in many situations.
See lessWhy correction of curvature is always considered as a negative?
Komal Bhandakkar
Correction of curvature: Physically correction factor starts out negative because of the focusing effect of the curved surface. At greater depths, the correction factor is always positive due to the increased beam spread beyond the focal zone caused by the surface curvature. Correction is always negRead more
Correction of curvature:
Physically correction factor starts out negative because of the focusing effect of the curved surface.
At greater depths, the correction factor is always positive due to the increased beam spread beyond the focal zone caused by the surface curvature.
Correction is always negative but the error is positive.
If both sides of the lens curved outward then it is called a converging lens.
According to the cartesian system, the focal length of a concave mirror is negative where R is the radius of curvature of a convex mirror is positive.
Thank you.
See lessWhat are Technical Interview Questions of Highway Company?
aviratdhodare
Some technical que's are: What is the coeff. of longitudinal friction? What is the coeff. of lateral friction? What is the width of carriageway? What is the max width of vehicle as per IRC? What is width of shoulders & Emergency lane? What is the total reaction time as per IRC? What is max desigRead more
Some technical que’s are:
- What is the coeff. of longitudinal friction?
- What is the coeff. of lateral friction?
- What is the width of carriageway?
- What is the max width of vehicle as per IRC?
- What is width of shoulders & Emergency lane?
- What is the total reaction time as per IRC?
- What is max design speed for diff types to road category?
- What is superelevation?
- What are the IRC recommendations for superelevations?
- What is camber & its IRC recommendations?
- What is shape of transition curve?
- What is set-back dist?
See lessWhat is mean by sheroid triangle in the survey?
Kuldeep Singh
There's no such thing as sheroid triangle. I think you wanted to type spheroid triangle. Spheroid triangle is nothing but a triangle on a sphere (the Earth). In surveying, when three points on the Earth are taken which are at least about a few kilometers apart, the lines joining them will be curvesRead more
There’s no such thing as sheroid triangle. I think you wanted to type spheroid triangle.
Spheroid triangle is nothing but a triangle on a sphere (the Earth). In surveying, when three points on the Earth are taken which are at least about a few kilometers apart, the lines joining them will be curves but not straight lines because of the Earth’s curvature. The three curved figure made by these curves with each of our points as vertices is a spheroid triangle.
We denote this kind of a because triangle separately in this way because we cannot apply normal trigonometry to this triangle since the sum of the angles is greater than 180º. If we do that, we’ll end up with wrong calculations. So, adjustments first need to be done. They are already taken care of in GPS positioning.
See lessWhy only cylinders shape were used to test Split Tensile Strength of Concrete?
Kuldeep Singh
This is a very basic thing to understand. Tensile test is done on cylinders because only cylinders can be held under pure tension by applying a compressive load. You'll see that a cylinder always breaks down the diametric plane and not from a horizontal plane or inclined plane. That will only happenRead more
This is a very basic thing to understand. Tensile test is done on cylinders because only cylinders can be held under pure tension by applying a compressive load. You’ll see that a cylinder always breaks down the diametric plane and not from a horizontal plane or inclined plane. That will only happen if it was under pure tension.
If we take any other prismatic shape such as square cross section cylinder, the failure will be via compression and not tension. If we take other shapes, there may be an uneven distribution of stresses which will give a wrong impression of tensile strength.
See lessWhy cubes are tested at 3, 7 and 28 days for the Compressive Test?
Kuldeep Singh
First of all 28 days strength is the definition of compressive strength. So it's obvious to test concrete on 28 days for strength. Concrete reaches 99% of its full potential strength in 28 days and 28 is also a round figure (4 weeks). Hence, it is chosen for the definition. Now, 3, 7, and 14 day areRead more
First of all 28 days strength is the definition of compressive strength. So it’s obvious to test concrete on 28 days for strength. Concrete reaches 99% of its full potential strength in 28 days and 28 is also a round figure (4 weeks). Hence, it is chosen for the definition.
Now, 3, 7, and 14 day are both round figure in terms of percentage of strength development and also round figure in weeks.
The reason for testing concrete before 28 days on these days as well is that suppose the concrete strength falls fairly inadequate on let’s say 7 or 14 days. Then, the concrete may straight away be discarded or another mix design be made. Or else, better curing can be done. This will save time, money and effort. That’s why generally three tests are done during the 28 day cycle.
See lessDifference between map and plan?
AdityaBhandakkar
Hi, In simple words, the map is a topographical representation of various elements, location, places, regions etc. all the information present on maps can be seen on site. The map is a study of the whole location. It is given information about important points. The plan is a dimensional representatiRead more
Hi,
In simple words, the map is a topographical representation of various elements, location, places, regions etc. all the information present on maps can be seen on site. The map is a study of the whole location. It is given information about important points.
The plan is a dimensional representation place, region, structure, building with various detail information. It also includes hidden data and diagrams. It gives detailed information about small areas in symbolic forms.
See less