
Bellfires® BM & BR
26
Lay another coarse of
10" block on wing walls
leaving 4" open on out-
side edge. Span across
outer edge of wing walls
with one 4" x 8" x 56"
pre-cast concrete lintel
(FIG. 11) Pour the void
between lintel and
masonry dome with per-
lite mixture. Lay the sec-
ond 4" X 8"X 56" pre-
cast lintel in place, off-
setting the first one by
4".
Содержание BM 21
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