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2. Fan (machine) - Wikipedia

   en.wikipedia.org/wiki/Fan_(machine)

   Fans are used to force air into low- and high-bypass jet engines, seen here on a Boeing 777. A fan is a powered machine used to create a flow of air. A fan consists of a rotating arrangement of vanes or blades, generally made of wood, plastic, or metal, which act on the air. The rotating assembly of blades and hub is known as an impeller, rotor ...

3. List of surveying instruments - Wikipedia

   en.wikipedia.org/wiki/List_of_surveying_instruments

   Prism (surveying) (corner cube retroreflector) Prismatic compass (angle measurement) Ramsden surveying instruments. Ranging rod. Surveyor's chain. Surveyor's compass. Tachymeter (surveying) Tape (surveying) Tellurometer.

4. Formwork - Wikipedia

   en.wikipedia.org/wiki/Formwork

   Sketch of the side view of traditional timber formwork used to form a flight of stairs. Placing a wall form. A matching form will be placed on the opposite side to create the space to pour concrete into. Formwork is molds into which concrete or similar materials are either precast or cast-in-place.

5. Surveying - Wikipedia

   en.wikipedia.org/wiki/Surveying

   Quantity surveying is a profession that deals with the costs and contracts of construction projects. A quantity surveyor is an expert in estimating the costs of materials, labor, and time needed for a project, as well as managing the financial and legal aspects of the project. A quantity surveyor can work for either the client or the contractor ...

6. Kaplan turbine - Wikipedia

   en.wikipedia.org/wiki/Kaplan_turbine

   The Kaplan turbine was an evolution of the Francis turbine. Its invention allowed efficient power production in low- head applications which was not possible with Francis turbines. The head ranges from 10 to 70 metres (33 to 230 ft) and the output ranges from 5 to 200 MW. Runner diameters are between 2 and 11 metres (6 ft 7 in and 36 ft 1 in).

7. Scaffolding - Wikipedia

   en.wikipedia.org/wiki/Scaffolding

   Scaffolding for rehabilitation in Madrid [1] Scaffolding, also called scaffold or staging, [2] is a temporary structure used to support a work crew and materials to aid in the construction, maintenance and repair of buildings, bridges and all other human-made structures. Scaffolds are widely used on site to get access to heights and areas that ...

8. Table saw - Wikipedia

   en.wikipedia.org/wiki/Table_saw

   Table saw. A table saw (also known as a sawbench or bench saw in England) is a woodworking tool, consisting of a circular saw blade, mounted on an arbor, that is driven by an electric motor (directly, by belt, by cable, or by gears). The drive mechanism is mounted below a table that provides support for the material, usually wood, being cut ...

9. Material take off - Wikipedia

   en.wikipedia.org/wiki/Material_take_off

   Material take off ( MTO) is a term used in engineering and construction, and refers to a list of materials with quantities and types (such as specific grades of steel) that are required to build a designed structure or item. This list is generated by analysis of a blueprint or other design document. The list of required materials for ...