Deep beams under top and bottom loading - Reinforced Concrete Deep Beams - page 139

Schütt (1956) reported tests on a series of reinforced concrete walls under
uniformly distributed load on the top or bottom edges. The specimens used for
top loadings were as shown in Figure 6.2 and for bottom loading the
specimens were identical to those used by Graf (Figure 6.1) . All the specimens
had vertical side nibs and shear reinforcement was present in only a few of the
test specimens. As a result of his tests Schütt proposed some design rules
which are summarised under Design approaches (Section 6.7)

Figure 6.2 Details of specimens tested by Schütt.

Leonhardt and Walther (1966) have also reported tests on deep beams
with top or bottom loading. They decided that the best means of providing
main reinforcement was by means of well-anchored bars from support to
support and that these should be distributed over the lower 20% of the
height of the beam. It was suggested that inclined stirrups should be
extended to a height equal to the span. Closely spaced ( 100 mm) stirrups

were recommended to reduce crack widths, with vertical stirrups extending
the full height of the beam.

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