Description
These cast iron helicopter tie-down points are suitable for securing in concrete, ashore; they are not suitable for use on a shipboard heliport.
With no moving parts, once secured in concrete, these tie-downs are simple to operate by securing one end of a helicopter lashing to the horizontal bar and the other end to the helicopter.
Made from ductile cast iron (ASTM A-536), each tie-down weighs around 5.3 kg (11.5 lb) and has been tested to over 10 tonnes (23,300 lbs), without deflection. Actual capacity depends on many local installation factors, including:
- Concrete strength
- Rebar strength (if used) and design
- Angle of pull from the fitting to the load
There is a stake/grounding hole in the bottom and rebar holes in the sides. Grounding rods are not included.
See HPT-07107 for the version with an estimated capacity of 4.0t (9,000 lb).
Installation Guidance
- Fill the mooring point with sand, to keep concrete out during the pour
- 6,000 psi concrete is recommended
- The side rebar holes can be utilised as per the direction of the project engineer
- The bottom hole is square, to keep the mooring point from displacing during the pour
- The square hole can be used either:
- With a stake to bring the mooring point to grade, or
- It can be used to install a grounding rod (grounding rods are not included)
- The mooring point can also be pressed into the concrete, after the pour
Key Features
- Material: Ductile cast iron (ASTM A-536)
- Overall height: 152.4 mm (6 inches)
- Weight: Approx. 5.3 kg (11.5 lb)
- Tested to: Over 10 tonnes (23,000 lb), without deflection
- Finish: No paint
- Dimensions:
- Square, bottom hole for stake/grounding: 22 mm (7/8 inch) square
- Round, side rebar holes: 15.9 mm (5/8 inch) diameter
NB Maritime Aviation will not be responsible for the technical requirements or final engineering solutions
