Skip to main content
Feb 26, 2016 / Haseeb Jamal -

5 Travel Myths You Need to Stop Believing Right Now

Feb 26, 2016 / Haseeb Jamal -

Canal Comes Alive with Lighted Boat Parade.

Deterioration of Concrete and Remedial Measures

Calcium silicates can be used to fill the pores and decrease the permeability. This can be done by treating calcium hydroxide with diluted sodium silicate (also known as Water-Glass). Pores can also be filled by treating Calcium Hydroxide with Magnesium Fluosilicate followed by the formation of Colloidal Silicofluoric Gel to withstand acid attack. Allowing the

To Perform California Bearing Ratio Test

It is the ratio of force per unit area required to penetrate a soil mass with standard circular piston at the rate of 1.25 mm/min. to that required for the corresponding penetration of a standard material. The California Bearing Ratio Test (CBR Test) is a penetration test developed by

How to Remove Stains from Concrete

It is always better to remove the contaminant and clean the concrete surface as soon as possible because if it penetrates into the concrete, the removal of stains may be more difficult. To reduce the risk of contaminants penetrating into the concrete and make stain removal easier, a suitable sealer can be applied to the concrete surface when new or after cleaning.

How to Add Activities in Project P3? Video Tutorial | Assign Types to Tasks

Adding Activities, Specifying Original Duration & Task Type Assignment

How to Adjust Activity Relationship in Primavera

Adjust Schedule in Primavera to Project finish Date & Activity Relationships

How to do Triangulation Survey

The line of sight should not be near the surface of ground at pt of tangency on account of strata of disturbed air and should be kept at least 2m (61) above the ground preferably 3m (1D) and this allowance (clearance) should be made in deterring the heights of stations. If the peaks in the intervening ground are likely to obstruct, the line of sight, their elevations and

How to do Trigonometric Surveying

Geodetic or trigonometrically surveying takes into account the curvature of earth Since very extensive areas and very large distances are involved. In geodetic surveying highly refined instruments and methods are used. Geodetic work is undertaken by the state agency e.g. survey of Pakistan undertaken by the state agency. The object of geodetic surveying is to

Method of Surveying a River & Sounding

The survey of the shore line of a river is made by running a theodolite and tape traverse on a shore at a convenient distance form the edge of the water. If the river is narrow, a single theodolite and tape traverse is on one bank and both banks. Located by staid or plane table methods. If the river is wide, it is necessary to run traverses on both banks and locate each shore

How to Establish controls in Hydrographic Surveying

In an extensive survey, the primary horizontal control is established primary horizontal control secondary once by running theodolite and tape traverse b/r the triangulation station, the traverse lines being run to following the shore lines approx. in survey of less extent the primer horizontal, control only is required and is established by running a theodolite and tape

Factors Affecting Construction of Tunnels

Tunnels are constructed To avoid the expensive acquisition of valuable built up land, tearing up pavements and holding up traffic for long periods in large cities. When the depth of ordinary cutting exceeds 20m and the ground rises rapidly for a considerable distance after wards. To avoid the excessive cost of maintenance of an open cut subjected to land slides or snow

Turbidity of Water sample Using Nephelometric Method

Water is said to turbid when it is seen containing materials of suspension inside it. While turbidity may be defined as the measure of visible material in suspension in water, turbidity may be caused by algae or other organisms. It is generally caused by silt or clay. The amount and character of turbidity depends upon two things: Type of soil over which flows, The velocity of

Determination of Suspended Solids in Water

The total dissolved solids mainly consist of the test that acts as a check on detailed analysis. Another useful aspect is that electric conductivity can be continuously recorded. Any sudden change indicate a change of water. A treatment method can be there fore instantly detected. Determination of total solids is used in two operations. In developing a potential source

Sieve Analysis & Particle Size Analysis

The grain size characteristics of soils that are predominantly coarse grained are evaluated by a sieve analysis. A nest of sieves is prepared by stacking test sieves one above the other with the largest opening at the top followed by sieves of successively smaller openings and a catch pan at the bottom. Opening mesh sizes of commonly used sieves are shown in table

Search AboutCivil