E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
E04G21/02—Conveying or working-up concrete or similar masses able to be heaped or cast
E04G21/04—Devices for both conveying and distributing
Landscapes
Engineering & Computer Science
(AREA)
Architecture
(AREA)
Mechanical Engineering
(AREA)
Civil Engineering
(AREA)
Structural Engineering
(AREA)
On-Site Construction Work That Accompanies The Preparation And Application Of Concrete
(AREA)