What is NGL and OGL?

What is difference between OGL & NGL? Ans:The first level taken of the natural ground without using any mechanical means is called NGL whereas the level taken after preparation of bed by using mechanical means Grader ,Doze, JCB & Roller is called OGL.

What is EGL level civil?

Ground Level (EGL) means the level of the referred point of the exposed surface of the ground, road or pavement free from extraneous materials and High Flood Level(HFL) or Finished Ground Level(FGL) is the referred top most point of the nearby road shown in site plan.

How do you take a road level?

For road profile, slope is constant from X1 to X6 at 2% Difference in length is dx = 25m, so we can find the difference in height using the given slope. This is added to the road level at X1 to find the road level at X6 => road level at X6 is 24.500+0.500 = +25.000m.

How do you level ground naturally?

Nominating the “ground level (existing)” is usually achieved by taking the lowest level directly and vertically beneath the highest part of the proposed development on a site (based on surveyed RLs), to determine a maximum building height dimension.

What is NGL and FGL?

The confusion is that the level which we generally see is FGL(finished ground level) then to know NGL do we need to dig out the soil and check the hard stratum. Also is the use of columns in foundation dependent on this NGL. Because if there is just 0.5-1 m difference in NGL and FGL we don’t need column.

What is NGL in construction?

Natural ground level is termed as Level of the ground. The height of Natural ground level (NGL) is generally measured with Mean-sea level.

What is OGL level?

ORIGINAL GROUND LEVEL(OGL) OF ROAD// HIGHWAY CONSTRUCTION.

What is normal ground level?

Related to average ground level. Ground Level means the level of the referred point of exposed surface of the ground as indicated in the drawing.

What is FFL construction?

The floor plans will also have the finished floor levels (FFL) on them so the builder knows how high above natural ground (NGL) the house is to be.

What is SSL and FFL in construction?

SSL, FFL, SFL ABBREVIATIONS. • FINISH FLOOR LEVELFFL • STRUCTURAL FLOOR LEVELSFL • STRUCTURAL SLAB LEVELSSL.

What is an OGL survey?

Original Ground Level (OGL) Surveys. Verification of existing ground levels prior to work commencing. This is essential as the basis for all future measurement on site. Setting Out. Setting out involves translating a three-dimensional design onto site to the required tolerances.