What is a tie line used for?

What is a tie line used for?

A tie line allows users to avoid toll charges for long-distance calls between two geographically separated offices. If a key system sits behind (i.e., is used in conjunction with) a PBX, one or more tie lines are used to interconnect them. See also line, nailed-up circuit, and tie trunk.

How do you call a tie line?

A tie-line could originate calls on either end to the other. So at SF the line would give dial tone from the PBX in LA. And, at the LA end you would hear dial tone from the SF PBX.

What is a tie line and what information can it provide?

tie line. noun. a telephone line between two private branch exchanges or private exchanges that may or may not pass through a main exchange.

What is the main objective of providing tie line in chain survey?

A“tie line” is that line which joins some fixed points called “stations” on the main survey lines. The purpose of a tie line is two-fold, i.e., firstly it enables checking of the accuracy of the network and secondly locating the interior details which are comparatively far away from the main survey lines.

Why are tie lines not parallel?

You may notice that the dome in Figure 1 is not symmetrical and the tie lines are not parallel to each other. This is simply because the solubility of C in the two phases (A and B) is not the same. In whatever direction the tie lines are slanted, they connect points of equilibrium compositions.

What is tie line length?

The tie line length (TLL) has units of %w/w, same as the component concentrations. The length of the tie line is related to the mass of the phases by the equation where V and ρ are the volumes and densities of the top (t) and bottom (b) phases and XB & XT are the segment lengths of the tie line as shown in Fig. 1.

What is tie station?

What is a tie-station? A tie-station is located between major substations and contains circuit breakers that allows sections of the corridor to be isolated independently. It provides protection and sectioning of the overhead power traction supply system and, on multiple tracks, improving voltage regulation.

What is partially miscible solution?

A pair of liquids is considered partially miscible if there is a set of compositions over which the liquids will form a two-phase liquid system. This is a common situation and is the general case for a pair of liquids where one is polar and the other non-polar (such as water and vegetable oil.)

What is a plait point?

The plait point is the point where both binodal and spinodal curves coincide and is identified by the Eq. It can be noted that spinodal curves are always located to the right of the binodal curves and they meet at the plait point. Filled circles in Fig. Coordinates of plait point for various solvent systems.

What is two phase mixture?

The term ‘two-phase flow’ is also applied to mixtures of different fluids having different phases, such as air and water, or oil and natural gas. Sometimes even three-phase flow is considered, such as in oil and gas pipelines where there might be a significant fraction of solids.

Which is the tie line or check line?

Tie line – Line joining some fixed points as a Tie station on the main survey line is called as Tie line. Check line – The line joining between the apex of triangle and some fixed point on survey line or on base line is called as check line. Please log in to add an answer.

What is a tie line in construction surveying?

What is a Tie Line. Definition of Tie Line in Construction. The tie line in construction surveying is any type of dimensioning, whether it is linear, a radius, or another means of measuring off of another entity, that allows the accurate determination of a structure or other required location, on a property.

Which is longest tie line or base line?

Base line – Longest survey line passing through the centre of the are to be surveyed is called as base line. Tie line – Line joining some fixed points as a Tie station on the main survey line is called as Tie line.

Why do you need a tie line on a site plan?

The tie line is a very accurate and popular means of tying in all of the elements on the site-plan. Dimensions that tie into other dimensions, structures and construction elements allow the general contractor, surveyor or other entity on the construction site to verify that they are actually building in the correct location.