Abstract: In one embodiment, a roller jack includes: caster wheel attached to jack lift attached to an angle member having an angle member opening, and a locking mechanism to releasably lock the angle member to a corner block of a container through an elongated opening of the corner block. The locking mechanism includes: a locking mechanism baseplate having a baseplate protrusion, a swivel locking plate to be inserted through the angle member opening and the elongated opening of the corner block to the interior of the corner block, and a locking bolt for moving the swivel locking plate to an engaged position, where the swivel locking plate is prevented from passing through the angle member opening and the elongated opening of the corner block, and for threadingly moving the swivel locking plate toward the locking mechanism baseplate to press the angle member and the external wall of the corner block together.

Abstract: In one embodiment, a prefabricated container is modified as a medical isolation room by replacing an original door with a clear front door. An intake louver and an adjustable damper are disposed at a lower part of the front end. An exhaust vent is disposed at an upper part of the back wall. An exhaust fan and a HEPA filter are coupled to the exhaust vent. Washable coverings cover interior sides of the container to provide washable, nonslip interior surfaces. The exhaust fan and the adjustable damper at the intake louver are controlled to produce in the medical isolation room a negative air pressure of at least about minus 0.01 inch of water gage (approximately 2.5 pascals) and a displacement ventilation exhaust flow rate through the exhaust vent of at least about 100 cubic feet per minute (cfm) greater than an intake flow rate through the intake louver.

Abstract: Provided is a consolidometer and methods of its use. In its preferred embodiment, the device and methods permit accurate and convenient laboratory sampling of the self-weight consolidation of media, such as soft soil and soil slurries that may result from dredging operations. One option also provides for attaching sensors at locations along the consolidometer for taking data on additional characteristics of the media.

Abstract: Provided is a consolidometer and methods of its use. In its preferred embodiment, the device and methods permit accurate and convenient laboratory sampling of the selfweight consolidation of media, such as soft soil and soil slurries that may result from dredging operations. One option also provides for attaching sensors at locations along the consolidometer for taking data on additional characteristics of the media.