Precast concrete products. Ribbed floor elements1 Scope This document identifies the requirements, the basic performance criteria and evaluation of conformity for precast ribbed elements made of reinforced or prestressed normal weight concrete, used in floors or roofs. The elements consist of a top and or bottom slab and one or more (usually two) ribs; transverse ribs may also be present. Some examples of precast elements considered in this document are shown in Annex A. Specific requirements for

which are subdivided in accordance with their main properties into corrosion resisting steels

Decarburization test

What is BS EN 15399 about

where the dimensions and corners are stable

is applicable to the selection of insulators

limited to any kind of burrs

The crimping process mechanically locks a fitting onto a tube and presses a sealing ring within the fitting against the surface of a tube to make a seal between them

It applies to models in Table 3

BS 1881-211 gives the details on the petrographic estimation of mix proportions used to measure the composition of concrete containing coarse aggregate

BS 2574-1 guides regarding the marking

and nickel copper plated braid as the internal layer and provided with a water repellent protection for aerospace application

including information on conditioning and maintenance of the test chamber and mounting of test specimens (including explanatory figures)