ETC OneTrack by ETC - OneTrack Installation Methods Overview

10 OneTrack and OneTrack Backbone Planning and Installation Manual
Suspended Physical Load Capacity
The maximum weight that the track can support per linear foot varies based on the distance
between mounting points. The following examples represent the maximum supported physical
load based on various distances between mounting points. The distance shown at the top of
each illustration is the distance between mounting points. The bottom of each illustration
shows supported loads.
OneTrack
3 ft max
(0.9 m)
1.5 ft
(0.46 m)
8 ft max
(2.4 m)
55 lb (25 kg) 110 lb (50 kg)
22.5 lb (10.2 kg)
1.5 ft
(0.46 m)
Figure 8: OneTrack suspended physical load capacity
OneTrack Backbone
When using track-mounted fixtures on OneTrack Backbone, the load capacity is the same as
OneTrack.
When using non-track fixtures mounted with OneTrack Backbone fixture hangers (see Fixture
Hanger on page 62 ) on OneTrack Backbone, the rated load is dependent on the span. Use the
table below to determine rated load and deflection for a given span.
Span
Fixture centers
Fixture weight
Figure 9: OneTrack Backbone suspended physical load capacity for non-track fixtures
Span Maximum distributedload Maximum point load Maximum deflectionat center
2 ft (0.6 m) 800 lb (360 kg) 100 lb (45 kg)* < 0.05 in (0.1 cm)
3 ft (0.9 m) 685 lb (310 kg) 100 lb (45 kg)* < 0.05 in (0.1 cm)
4 ft (1.2 m) 590 lb (265 kg) 100 lb (45 kg)* 0.075 in (0.2 cm)
5 ft (1.5 m) 510 lb (230 kg) 100 lb (45 kg)* 0.125 in (0.3 cm)
6 ft (1.8 m) 435 lb (195 kg) 100 lb (45 kg)* 0.15 in (0.4 cm)
7 ft (2.1 m) 375 lb (170 kg) 75 lb (34 kg) 0.175 in (0.4 cm)
8 ft (2.4 m) 325 lb (145 kg) 50 lb (23 kg) 0.2 in (0.5 cm)
9 ft (2.7 m) 280 lb (125 kg) 40 lb (18 kg) 0.225 in (0.6 cm)
10 ft (3.1 m) 250 lb (90 kg) 35 lb (16 kg) 0.25 in (0.6 cm)
> 10 ft (3.1m) Not recommended
Calculations are based on a distance between fixture centers of 18 in (46 cm).
* Weight limited by clamp capacity