ComFlor® 51
Shallow composite profile
Typical unpropped span 2.5M - 3.6M
ComFlor® 51 is a traditional detail re-entrant composite floor deck. This profile provides an excellent mechanical key into the concrete slab, offering a strong sheer bond performance, which is augmented by cross stiffeners located in the profile trough. ComFlor® 51 presents a virtually flat soffit and a relatively thin slab is required to meet fire design requirements.
ComFlor® 51 composite slab volume & weight
| Slab depth (MM) | Concrete Volume (M²/M²) | Weight of concrete (KN/M2) Normal Weight Concrete |
Lightweight concrete | ||
|---|---|---|---|---|---|
| Wet | Dry | Wet | Dry | ||
| 101 | 0.092 | 2.16 | 2.12 | 1.71 | 1.62 |
| 105 | 0.096 | 2.26 | 2.21 | 1.79 | 1.69 |
| 110 | 0.101 | 2.37 | 2.32 | 1.88 | 1.78 |
| 115 | 0.106 | 2.49 | 2.44 | 1.97 | 1.87 |
| 120 | 0.111 | 2.61 | 2.55 | 2.07 | 1.96 |
| 125 | 0.116 | 2.73 | 2.67 | 2.16 | 2.04 |
| 130 | 0.121 | 2.84 | 2.78 | 2.25 | 2.13 |
| 150 | 0.141 | 3.32 | 3.25 | 2.62 | 2.49 |
| 200 | 0.191 | 4.49 | 4.40 | 3.56 | 3.37 |
| 240 | 0.231 | 5.43 | 5.32 | 4.30 | 4.08 |
Section properties (per metre width)
| Nominal thickness (MM) |
Design thickness (MM) |
Profile weight (KN/M²) |
Area of steel (MM²/M) |
Height to natural axis (MM) |
Moment of inertia (CM4/M) |
Ultimate moment capacity | |
|---|---|---|---|---|---|---|---|
| Sagging (KNM/M) |
Hogging (KNM/M) |
||||||
| 0.90 | 0.86 | 0.13 | 1579 | 16.74 | 55.70 | 5.69 | 6.99 |
| 1.00 | 0.96 | 0.13 | 1579 | 16.74 | 55.70 | 5.69 | 6.99 |
| 1.10 | 1.06 | 0.16 | 1938 | 16.73 | 68.50 | 7.00 | 8.88 |
| 1.20 | 1.16 | 0.17 | 2118 | 16.72 | 77.29 | 10.24 | 9.81 |
Technical specifications:
Typical unpropped span 3.0m
+ Provides an excellent mechanical key into concrete slab.
+ Excellent fire performance
+ Shear studs. The wide trough of ComFlor® 51 permits a flexible and efficient placement of shear studs.
+ Fire performance of the composite beams. Even for two hours fire rating, the top flange of the steel beam does not require fire protection when used with ComFlor® 51 composite deck.
+ Under floor services. Services are easy to attach to ComFlor® 51, with the ribs presenting a dovetailed recessed grove in the concrete slab at 152.5mm centres. This provides the perfect connection for service hangers via a wedge nut or similar type of device.
+ Fire performance of the slab. The dovetail presents a very small opening and contributes little to the transfer of heat through the slab in the event of fire. Thus a lesser slab depth is needed for fire design purposes.
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