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AutoCAD DXF (Drawing Interchange Format, or Drawing Exchange Format) is a computer-aided design (CAD) data file format developed by Autodesk [2] to enable CAD data exchange and interoperability between AutoCAD on different computing platforms.
A man using AutoCAD 2.6 to digitize a drawing of a school building. AutoCAD was derived from a program that began in 1977, and then released in 1979 [5] called Interact CAD, [6] [7] [8] also referred to in early Autodesk documents as MicroCAD, which was written prior to Autodesk's (then Marinchip Software Partners) formation by Autodesk cofounder Michael Riddle.
Uniclass 2015 is a unified classification system for all sectors of the UK construction industry. [1] It contains consistent tables classifying items of all scales, from entire systems such as a railway to individual product items such as anchor plates, flue liners or LED lamps.
Hatch is a global multidisciplinary management, engineering and development consultancy.Its group companies have more than 10,000 staff in 70+ offices. In 2015, Hatch was ranked as a top 20 International Design Firm according to the Engineering News-Record (ENR) rankings.
Example of hatching (e.g., background) and cross-hatching in many darker areas (visible if viewed at full size). Detail of Veronica Hatching ( French : hachure ) is an artistic technique used to create tonal or shading effects by drawing (or painting or scribing) closely spaced parallel lines .
The open hatch bulk carrier, often referred to as OHBC or conbulker, is designed to offer direct access to the hold through cargo hatches which extend the full width of the vessel. As a result, large cargo units can be lowered into place. If it is possible, the holds or hatches are designed around standard cargo unit sizes.
A typical 200-litre (55 US or 44 imp gal) tight head drum Low level nuclear waste in open head steel drums.. A drum (also called a barrel) is a cylindrical shipping container used for shipping bulk cargo.
To swim, the nautilus draws water into and out of the living chamber with its hyponome, which uses jet propulsion. This mode of propulsion is generally considered inefficient compared to propulsion with fins or undulatory locomotion , however, the nautilus has been found to be particularly efficient compared to other jet-propelled marine ...