TecQuipment Ltd, Bonsall Street, long eaton, Nottingham NG10 2AN, UK
tecquipment.com +44 115 972 2611 sales@tecquipment.com
Page 1 of 3REF 1223
Key Features
• One of a range of experiment modules that teach structures principles
• Fits to the Structures platform for ergonomic use and space-saving storage
• A simplifi ed version of a realistic structure to give students an understanding of real-life structures
• Includes multiple loads for many combinations of loads including uniformly distributed loads (UDLs)
• Supplied with a storage tray to keep smaller items safe
• Direct reading of horizontal reaction for quick and simple experiments
• Complementary experiments available: Two-Pinned Arch (STS10) and Fixed Arch (STS11)
• Works with user-friendly software (VDAS
®
)
Shown fitted to the Structures platform (STS1, available
separately)
Laptop not included
Three-Pinned Arch
STS9
Experiment for the study of the characteristics of a three-pinned arch under various load
conditions. Mounts on the Structures platform and connects to the Structures automatic data
acquisition unit and software (VDAS
®
Onboard).
Next Generation Structures
Screenshot of the VDAS® software
TecQuipment Ltd, Bonsall Street, long eaton, Nottingham NG10 2AN, UK
tecquipment.com +44 115 972 2611 sales@tecquipment.com
Page 2 of 3REF 1223
Three-Pinned Arch
STS9
Description
One of a range of experiment modules that fi t to the
Structures platform (STS1, available separately), this
product helps students to understand how loads a ect the
horizontal reaction forces in a three pinned arch.
Students apply loads to hangers suspended from the
arch, held between two supports. One support allows
rotational movement only, acting as a pinned support. The
other support allows translational movement, acting as a
roller support. A load cell prevents the translation, while
measuring the horizontal reaction due to the load. Each
support includes pointers that work with the scale on the
platform for accurate positioning. A third set of bearings at
the crown of the arch forms a third pinned joint. Students
use textbook equations to predict the reaction forces
due to the load, comparing them with measured results,
and learn how to create the infl uence line and bending
moment diagrams. This helps confi rm the reliability of the
textbook equations and the accuracy of the experiment
results.
This product includes additional masses so students may
apply a uniformly distributed load (UDL) across the span
of the arch for comparison of results with a single point
load.
The load cell connects to the USB interface hub of the
Structures platform for computer display and data
acquisition (VDAS
®
Onboard).
Standard Features
• Supplied with comprehensive user guide
• Five-year warranty
• Made in accordance with the latest European Union
directives
• ISO9001 certifi ed manufacturer
Learning outcomes
• Horizontal reaction due to a varying single point load
on a statically determinate structure
• Horizontal reaction due to a moving single point load
on a statically determinate structure
• Horizontal reactions due to a uniformly distributed load
on a statically determinate structure
• Infl uence lines and superposition
• Lines of thrust in an arch
• Graphical construction of a bending moment diagram
for point loads
• Maximum bending moments due to a load on an arch
Essential Ancillary
• Structures Platform (STS1)
Software
TecQuipment has created data acquisition applications
(VDAS
®
Onboard) for each experiment module, with
additional simulated experiments.
The simulated experiments allow students to simulate the
hands-on laboratory experiments, verifying their results.
They also allow simulation of alternative set-ups, such as
arches of larger span, extending the learning experience
beyond the practical laboratory session.
Typical Experiment Results Showing How a Moving Load
Affects the Horizontal Reaction
Typical Experiment Results Comparing Reaction with a
Varying Load at the Crown of the Arch
TecQuipment Ltd, Bonsall Street, long eaton, Nottingham NG10 2AN, UK
tecquipment.com +44 115 972 2611 sales@tecquipment.com
Page 3 of 3REF 1223
Three-Pinned Arch
STS9
Operating Conditions
Operating environment:
Laboratory
Storage temperature range:
–25°C to +55°C (when packed for transport)
Operating temperature range:
+5°C to +40°C
Operating relative humidity range:
80% at temperatures < 31°C decreasing linearly to 50% at
40°C
Detailed Specifications
TecQuipment is committed to a programme of continuous
improvement; hence we reserve the right to alter the
design and product specifcation without prior notice.
Dimensions and weight:
• Nett (assembled): 660 mm long x 100 mm front to back
and 320 mm high and 6 kg
• Approximate primary packed (with storage tray):
0.07 m
3
and 7 kg
Space Needed:
• 1500 mm x 600 mm, level bench or desk
Items Included:
• Two arch supports, holding an arch of 0.5 m span x
0.1 m height
• Cable
• Nine mass hangers
• 50 x 20 g masses
• Storage tray
• Comprehensive user guide
