Anew method, patent pending,
for installing precast stairs is
helping to save money and speed
up construction of multistory concrete
buildings. Designed for both
continuous flights and flights with
intermediate landings, it uses
braced steel frames to tempora ri l y
support the precast stairs. The
frames leave enough clearance to
permit immediate use of the stairs
while the floor decks at top and bottom
are being formed and cast.
Usually floor decks are cast with
an opening left for stairs to be installed
later. Installation of metal
pan stairs may follow days or weeks
after the floor work, but in the interim,
movement of men or materials
is slowed because only ladders can
be used. In some buildings, stairs
are formed and cast as the construction
proceeds. Howe ve r, such stair
forms contain rebars, pre ve n t i n g
the forms from being used as stairs
until the concrete has been cast and
cured. Even after the concrete is
cast, the stairway may be so cluttered
with shoring for the stair
forms above that it can’t be used by
work crews. The system described
here overcomes these difficulties.
Anew method, patent pending,for installing precast stairs ishelping to save money and speedup construction of multistory concretebuildings. Designed for bothcontinuous flights and flights withintermediate landings, it usesbraced steel frames to tempora ri l ysupport the precast stairs. Theframes leave enough clearance topermit immediate use of the stairswhile the floor decks at top and bottomare being formed and cast.Usually floor decks are cast withan opening left for stairs to be installedlater. Installation of metalpan stairs may follow days or weeksafter the floor work, but in the interim,movement of men or materialsis slowed because only ladders canbe used. In some buildings, stairsare formed and cast as the constructionproceeds. Howe ve r, such stairforms contain rebars, pre ve n t i n gthe forms from being used as stairsuntil the concrete has been cast andcured. Even after the concrete iscast, the stairway may be so clutteredwith shoring for the stairforms above that it can’t be used bywork crews. The system describedhere overcomes these difficulties.
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