The present invention aims to provide a radiation-curing liquid resin composition for optical tridimensional modeling having good storage stability. As the filament, a filament comprising a tungsten base material, a tantalum layer coating the tungsten base material, and a tantalum carbide layer coating the tantalum layer is used. Also extending from the back wall but in an opposite direction are a plurality of mounting brackets that form a joist receiving channel therebetween. A height of each of the plurality of projections is preferably is larger than a pitch between each adjacent pair of the plurality of projections. The method further includes applying, from the audio model, a representation of a noise for the identified activation to the associated portion of the audio signal so as to cancel at least part of the noise from the audio signal. Based on the scan data, the processors: apportion the load data from each load cell to the items bearing on it; allocate to each item the load data apportioned from the various load cells; and determine a weight for each item.