(57) Disclosed is a segmental earth retaining wall block (1) having a front side (3),
a top side (5) with a transversal tongue (7) of a given width projecting from it,
the tongue (7) extending at a first distance (D1) from the front side (3), and a bottom
side (9) with a transversal groove (11) made in it, the groove (11) being sized to
receive the tongue (7) of another similar block (1) positioned below and thus to allow
stacking of the blocks (1). The groove (11) extends at a second distance (D2) from
the front side (3) that is smaller than the first distance (D1), and the first and
second distances (D1,D2) are selected so that the tongue (7) and the groove (11) are
offset with respect to each other over a distance that is smaller than the width of
the tongue (7). Advantageously, the tongue (7) is provided with a splitting groove
(13) sized and positioned to allow splitting of the tongue (7) with a splitting tool
along a transversal line that is positioned to permit the remaining portion of this
tongue to fit into the groove (11) of a further similar block (1) stacked on top of
the present block with the front side (3) of this further similar block (1) extending
in a same vertical plane as the first side of the present block (1). As a result,
one may stack the above mentioned blocks (1) as such, the resulting wall being then
battered, or one may stack the above mentioned blocks after having splitted their
tongues, the resulting wall being then vertical.
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