What is a spring line in construction?

What is a spring line in construction?

springline(of an arch or a vault) The point or line at which an arch or vault begins to curve. See also arch, rise, span.

What is the flowline of a pipe?

The top of the wetted line, the water surface, or the hydraulic grade line of water flowing in an open channel or partially full conduit. The lowest point of the channel inside a pipe, conduit, canal, or manhole. This term is used by some contractors, however, the preferred term for this usage is invert.

What is Haunching in drainage?

The portion of the material placed in an excavation on either side of and under a pipe from the top of the bedding up to the springline or horizontal centerline of the pipe. This is the most critical area in providing support for a pipe. …

What is the bottom of a pipe called?

In civil engineering, the invert level is the base interior level of a pipe, trench or tunnel; it can be considered the “floor” level. The invert is an important datum for determining the functioning or flowline of a piping system.

What is the purpose of spring line?

– Spring lines – Mooring lines leading in a nearly fore and aft direction, the purpose of which is to prevent longitudinal movement (surge) of the ship while in berth. Spring lines restrain the ship in two directions: headsprings prevent forward motion and backsprings aft motion.

What is the difference between pipeline and flowline?

Hence, the flow line is a special pipeline with its length limited to the oil field area. On the other hand, pipelines run for kilometers and sometimes cross different countries. Flowlines carry unprocessed crude oil whereas pipelines carry partially processed or fully processed fluids.

Whats the difference between invert and flowline?

A flowline is a line through the center of a channel reach or a water body, which defines the main direction of flow. Invert refers to the flowline of the culvert (inside bottom).

What is a haunch in concrete?

Deck haunches are commonly used on both prestressed concrete and structural steel girder bridges. The haunch is the area between the top of a bridge girder and the bottom of the concrete deck.

Why is it called invert elevation?

The invert level is so-called due to its resemblance to an upside-down arch. An inverted arch has its rounded tip (crown) pointing downward. Its counterpart, obvert level, is the elevation of the highest interior point.

What is a concrete pipe called?

Reinforced concrete pipe, or RCP, is one of the standard materials used in storm sewer systems, sanitation systems, and large irrigation projects. One benefit of concrete is its inherent strength, which simplifies installation and backfilling procedures.