Suspension Bridge Apparatus Manufacturer,Supplier and Exporter in India
Product Code : EL-SML-10078
Jlab Export is a leading Suspension Bridge Apparatus Manufacturer,and suppliers in India
Suspension Bridge Apparatus (code EL-SML-10078) is a cable-structure model with two mild steel cables, 0.5 cm in diameter and 150 cm long, pinned to supports 90 cm apart. Vertical loads hung along the span change the extension read on the left and right spring balances. JLab builds this two-cable bridge model, with dial gauge, stand and weights, in Ambala, India.
Specifications
| Parameter | Detail |
|---|---|
| Cables | Two mild steel cables, 0.5 cm diameter, 150 cm long |
| Supports | Pinned, 90 cm apart, placed symmetrically |
| Roller end | One end can be converted to a roller by a known load on a suspended pulley system |
| Loading | Vertical loads at various points along the span |
| Spring balances | Left and right |
| Dial gauge | 25 mm travel, with magnetic base |
| Supplied with | Supporting stand and a set of weights |
| Quality check | Each bridge apparatus is visually inspected before dispatch |
| Pack quantity | Each (sold individually) |
| Minimum order quantity | 1 unit |
| Dispatch time | Usually 14–18 working days |
| Product code | EL-SML-10078 |
| Manufacturer | Jain Laboratory Instruments Pvt Ltd (JLab) — OEM |
| Country of origin | India (made in Ambala, Haryana) |
Cable Shapes and Tension
A cable carries load in direct tension only, because it is too flexible to resist bending. Under concentrated loads it hangs as a polygon, under a uniform load along its own length as a catenary, and under a uniform load along the horizontal span as a parabola. For the parabolic case with span L and central sag d, the horizontal tension is H = wL² / 8d, and the tension at each support is √(H² + V²), where V is the vertical reaction there.
Point-Load Tests
Hanging a weight at different points along the span and reading the left and right spring balances shows how the pull divides between the two ends, while the dial gauge measures how far the loaded point drops. With one end converted to a roller and held by a known load on the pulley system, the horizontal pull in the cables is fixed by that load.
Related Two- and Three-Hinged Arch Apparatus
- Three Hinged Arch Apparatus — hinged mild steel arch whose thrust is measured at a roller end.
- Two Hinged Arch Apparatus — arch with one redundant, the horizontal thrust, found by strain energy.
Arches, frames and beams sit alongside this model in Structural Mechanics Lab, part of Engineering Lab Equipment.
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Last updated: 30 October 2026
