Red Seal Ironworker (Generalist) flashcards

30 cards. Read the term and the definition here. The deck at the top of this page is optional.

Project datum

The defined reference elevation or coordinate basis used to relate layout points and measurements consistently across the project.

Gridline

A designated layout reference used with dimensions and offsets to locate structural members and other components in the project.

Piece mark

An identifying mark that connects an item with its fabrication or erection information, not proof by itself that every feature conforms.

Centre-to-centre spacing

The distance between the reference centres of adjacent items, distinguished from the clear gap between their nearest surfaces.

Calibration

A controlled relationship or verification connecting a measuring instrument's readings with an appropriate reference under specified conditions and range.

Centre of gravity

The location representing the combined mass distribution for gravitational loading, which need not coincide with a component's geometric centre.

Working load limit

The permitted load rating for a component under its identified conditions, configurations, and restrictions rather than an unrestricted universal capacity.

Sling angle

The specified angle of a sling leg relative to a stated reference, whose definition is essential when calculating its force components.

Operating radius

The horizontal distance from a crane's rotation centre to the loaded hook line as defined for the applicable operating chart.

Bearing pressure

The force distributed over an effective support area, calculated as reaction divided by area for a stated average-pressure model.

Clear cover

The distance from the concrete surface to the nearest specified reinforcing surface, which may be an outer tie or stirrup.

Bar schedule

The coordinated information identifying reinforcing bar marks, sizes, shapes, quantities, dimensions, and other requirements for fabrication and placement.

Lap splice

An overlap arrangement that transfers reinforcement force through the designed system and requires the specified length, location, and detailing.

Mechanical coupler

A qualified splice component used with compatible bar-end preparation and installation procedures to provide the specified reinforcement force transfer.

Chair

A reinforcement support used to maintain the specified bar elevation and cover during assembly and concrete placement under the planned conditions.

Pretensioning

Prestressing in which steel is tensioned before casting and force is transferred through the approved release process after required concrete conditions are achieved.

Post-tensioning

Prestressing in which tendons are stressed after casting when the concrete and system satisfy the specified readiness and acceptance conditions.

Tendon profile

The designed spatial path and elevations of a prestressing tendon, maintained by appropriate supports and relevant to its structural action.

Anchorage

The specified assembly and supporting zone through which tendon force is secured and transferred according to the particular prestressing system.

Elongation

The measured or calculated extension of a tendon under force, interpreted with the approved model, equipment, and project acceptance requirements.

Snug-tightened condition

A defined bolted-joint installation condition that should not automatically be treated as completion of a separately required pretensioning procedure.

Faying surface

An interface between connected parts whose specified condition can be important to slip resistance and the designed behavior of a bolted connection.

Welding procedure specification

The document defining the approved welding method and relevant variables for a particular material and joint application, alongside other required qualifications.

Theoretical throat

The geometric throat dimension used in the stated ideal weld model, distinguished from the fillet leg length and actual acceptance requirements.

Soft foot

An equipment support condition in which a mounting foot does not bear properly, potentially distorting the assembly when fasteners are tightened.

Temporary shoring

A planned support system that carries the required construction-stage forces while the permanent load path is incomplete, altered, or under repair.

Load path

The connected sequence of structural components and interfaces that transfers applied forces to supports in a particular construction or service condition.

Nonconformance

A departure from a specified requirement that requires the applicable documented disposition rather than an unapproved field assumption or concealment.

Stored energy

Energy remaining in a system, such as a tensioned tendon, hydraulic circuit, or mechanical take-up, even when normal motion has stopped.

As-built record

Documentation of the authorized installed configuration and relevant accepted changes, supporting future operation, inspection, maintenance, and structural understanding.