Research Article

Sustainability Design Considerations for Timber-Concrete Composite Floor Systems

Table 4

Influence of connection properties on TCC floor allowable spans.

TimberTimber thickness (mm)Insulation thickness (mm)Concrete thickness (mm)
50507575100100
Connector spacing (mm)
250500250500250500

GLT8904.98 (+)4.75 (+)5.39 (++)5.16 (++)5.92 (+++)5.71 (+++)
8954.76 (+++)4.54 (+++)5.14 (+++)4.93 (+++)5.67 (+++)5.48 (+++)
14006.26 (+)6.00 (+)6.44 (++)6.15 (++)6.75 (+++)6.46 (+++)
14055.97 (+++)5.75 (+++)6.10 (+++)5.87 (+++)6.40 (+++)6.17 (+++)
18607.39 (+)7.13 (+)7.43 (++)7.13 (++)7.60 (+++)7.28 (+++)
18657.07 (+++)6.86 (+++)7.06 (+++)6.83 (+++)7.20 (+++)6.96 (+++)

CLT10505.47 (+)5.23 (+)5.78 (++)5.52 (++)6.21 (+++)5.95 (+++)
10555.23 (+++)5.02 (+++)5.50 (+++)5.28 (+++)5.93 (+++)5.72 (+++)
17507.29 (+)7.05 (+)7.33 (++)7.05 (++)7.50 (+++)7.20 (+++)
17557.02 (+++)6.82 (+++)7.01 (+++)6.79 (+++)7.15 (+++)6.92 (+++)
24509.01 (+)8.78 (+)8.92 (++)8.64 (++)8.93 (+++)8.62 (+++)
24558.74 (+++)8.56 (+++)8.59 (+++)8.39 (+++)8.56 (+++)8.35 (+++)
315010.63 (+)10.41 (+)10.46 (++)10.20 (++)10.37 (+++)10.08 (+++)
315510.36 (+++)10.20 (+++)10.14 (+++)9.96 (+++)10.02 (+++)9.82 (+++)

Remarks: “+” represents the STC is the first level of the acoustic performance or at least 45 dB. “++” represents the STC is the second level of the acoustic performance or at least 50 dB. “+++” represents the STC is the third level of the acoustic performance or at least 55 dB.