Structural Floor Panels Design Guide - Hebel Supercrete AAC ...

Below plane beams are usually concealed by the
suspended ceiling.
In-Plane Beams
Where there is limited headroom under the floor, or there
is no suspended ceiling to hide a beam under the floor, an
in-plane beam can be used. In this arrangement, the ends
of the panels are slid into the web space of the beam and
supported off its bottom flanges. It is important to note
that if universal beams are specified, this method cannot
be used at both ends of a floor panel as it is not physically
possible to install a panel between two in-plane universal
beams. The in plane beam is only practical where the
opposite ends of the floor panels have below plane support
(beams or supporting walls). Where parallel flange channels
are specified steel angle supports should be welded to the
web to provide seating as shown in Detail SFP 2-10, on
the following page.
In this arrangement, slotted holes need to be cut in the web
of the beam for the ring anchor reinforcing to pass through.
Depending on the size of beam being used, additional
support plates may need to be welded to the bottom
flange to provide sufficient bearing width. If the steel beam
is deeper than the floor panel thickness, a support angle
will need to be welded to the beam web to sit the panels
on as shown in Detail SFP 2-10, on the following page.
Generally, grouting between the panel ends and the beam
web is not necessary but if the design does require this, it is
possible to install wider seating plates and to taper the end
of the panel so that it is clear of the top flange at the top to
give a gap for placing the grout.
2.1.6.5 Concrete Beam Supports
Supercrete Structural Floor Panels can be supported
on precast or cast in-situ concrete beams or lintels. The
same end and edge seating dimensions apply as for other
situations.
Typically the support beam is cast or placed with the
top surface level with the underside of the panels and
a perimeter ring anchor topping to the beam is poured
to lock the panels in place, see Detail SFP 2-11, on the
following page.
An in-plane beam has the panels fitted to the web of the beam, seated on the bottom flange.
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