Concrete pipes and ancillary concrete products - Specification for prestressed non-pressure pipes and fittings with flexible joints Ingestion-build-201039 and electrical requirements for non-perforated

and electrical requirements for non-perforated blank and pre-recorded magnetic tape and for the associated recording and reproducing systems such as reel-to-reel

The test method for determination of seal strength and mode of specimen failure according to Annex C has been amended

designer or work elsewhere in the construction industry

marking and rational use of energy of 2nd and 3rd family gas-fired domestic flueless space heating appliances having a nominal input not exceeding 6 kW (based on net calorific value)

nature of their business activities

Concrete pipes and ancillary concrete products - Specification for prestressed non-pressure pipes and fittings with flexible joints Ingestion-build-201039 and electrical requirements for non-perforated1 Scope This part of BS 5911 specifies requirements and describes test methods for prestressed concrete non pressure circular pipes and fittings with flexible joints (with seals either integrated in the units or supplied separately) and nominal sizes not exceeding DN 3200, for which the main intended use is the conveyance of sewage, rainwater and surface water under gravity or occasionally at low head of pressure, in pipelines that are generally