Concreting ~ this site activity consists of four basic procedures †1. Material Supply and Storage † this is the receiving on site of
the basic materials namely cement, fine aggregate and coarse
aggregate and storing them under satisfactory conditions. (see
Concrete Production † Materials on pages 284 & 285)- Mixing † carried out in small batches this requires only simple
hand held tools whereas when demand for increased output is
required mixers or ready mixed supplies could be used. (see
Concrete Production on pages 286 to 289 and Concreting
Plant on pages 199 to 204) - Transporting † this can range from a simple bucket to barrows
and dumpers for small amounts. For larger loads, especially those
required at high level, crane skips could be used:-
For the transportation of large volumes of concrete over a
limited distance concrete pumps could be used. (see page 202)- Placing Concrete † this activity involves placing the wet
concrete in the excavation, formwork or mould; working the
concrete between and around any reinforcement; vibrating and/
or tamping and curing in accordance with the recommendations
of BS 8110: Structural use of concrete. This standard also
covers the striking or removal of the formwork. (see
Concreting Plant on page 203 and Formwork on page 514)
Further ref. BS 8000-2.1: Workmanship on building sites. Code
of practice for concrete work. Mixing and transporting concrete.
Also, BS EN 1992-1-1 and -2: Design of concrete structures.
Concreting Plant