A tank farm system that includes a tank configured to hold a volume of fluid; a barrier constructed at least partially around the tank; and a portable pathway disposed on the barrier. The portable pathway further includes a pliable frame member; a row of mating holes disposed on each side of the pliable frame member; a set of steps coupled to the pliable frame member; wherein one or more of the set of steps is coupled to the pliable frame member with a mount that aligns with the row of mating holes on each of the corresponding sides of the pliable frame member.

A staircase kit, device, and method that uses precut, fixed-sized components capable of producing building code-compliant staircases that can accommodate foot or more differences in home story heights. The design uses fixed-length stringers and adjustable height risers. The angle between the stringers to the floor changes depending on the height of the adjustable height risers and story height. The angles of the steps, stringers and banisters/handrails are configured to adjust with respect to the other components with the aid of turnbuckles and movable joints or bolts, thus keeping the steps and landings level at different story heights. This enables homeowners, generally exempt from contractor license requirements, to use a prefabricated kit to build code-compliant stairways in their homes with little or no staircase cutting or part modification.

A floating modular stair system includes a wall mounting plate that is attachable to a vertical wall, and a base mounting plate that is anchorable to a horizontal floor. A monostringer beam is attachable to the wall mounting plate and to the base mounting plate. The monostringer beam includes an integrated hook attachment for variable angle adjustment and attachment to the wall mounting plate. Stair tread brackets are attachable to the monostringer beam for equal spacing of stair treads after installation of the monostringer beam to the wall mounting plate and to the base mounting plate. Each of the stair tread brackets are also designed for individual variable angle adjustment and leveling after attachment to the monostringer beam, and the stair tread brackets are rotatable through an adjustable anchor point about a fixed pivot anchor point to level the stair treads of the floating modular stair system.

An adjustable stair tray assembly includes a first angle bar, a plurality of track channels coupled to the first angle bar with each defining a cavity. A plurality of U-channels is coupled to a second angle bar, and each one of the plurality of U-channels is received in a respective cavity of each of the plurality of track channels. The second angle bar comprises a horizontal wall, a vertical wall extending from the horizontal wall, and a reinforcing flange extending downwardly from the vertical wall. A plurality of U-channels is coupled to the second angle bar, the plurality of U-channels is telescopically adjustable within the plurality of track channels to adjust a tray depth of the adjustable stair tray assembly.

A step assembly includes a horizontally extending mounting foot section, a vertically extending head section, a single sloping support member interconnecting the mounting foot section and head section, and a step member having a number of integrally formed horizontal steps extending above and attached to the single sloping support member. The step assembly is narrow in a width dimension for use on a narrow dock section, and the horizontal steps are configured to facilitate personal access to a raised boat on a lift.

The invention relates to a system for assisted ascent or descent, comprising: a staircase comprising at least one instrumented mobile step, equipped with at least one sensor for measuring the centre of pressure of a user and at least one lifting actuator designed to raise or lower the step according to a degree of vertical freedom; a calculation unit connected to the sensor for measuring the centre of pressure and to the lifting actuator, the calculation unit being configured to calculate at least the position, the speed of movement and the acceleration of the user from the centre of pressure measured by the sensor and, depending on the values calculated, control the lifting actuator.

An adjustable stair tray assembly includes a first angle bar, a plurality of track channels coupled to the first angle bar with each defining a cavity. A plurality of U-channels is coupled to a second angle bar, and each one of the plurality of U-channels is received in a respective cavity of each of the plurality of track channels. The second angle bar comprises a horizontal wall, a vertical wall extending from the horizontal wall, and a reinforcing flange extending downwardly from the vertical wall. A plurality of U-channels is coupled to the second angle bar, the plurality of U-channels is telescopically adjustable within the plurality of track channels to adjust a tray depth of the adjustable stair tray assembly.