Abstract: A tool for installing a door striker pin. The tool includes a latch portion, a pin positioning portion, and a cover. The latch portion includes a striker pin configured to engage with a latch of a door and an abutment surface configured to engage with a frame member of a cab. The pin positioning portion is coupled to the latch portion. The pin positioning portion defines a striker pin slot extending substantially parallel with the striker pin. The striker pin slot is positioned to align with a striker pin interface for the door. The cover is slidably coupled to the pin positioning portion such that the cover is slidably translatable between a first position where the cover extends across the striker pin slot and a second position where the cover does not extend across the striker pin slot.

Abstract: A tool for installing a door striker pin includes: a latch engagement section having a first surface, a striker pin extending from the first surface, and an abutment surface that extends generally orthogonal to the first surface; and a pin positioning section coupled to the latch engagement section and including a positioning surface with a striker pin slot formed therethrough that extends in parallel with the striker pin. The striker pin slot is positioned in the positioning surface such that the striker pin slot is aligned with a striker pin installation location when the striker pin of the latch engagement section is engaged with a latch of a door and the abutment surface rests against a frame to which the door is pivotably coupled.

Abstract: A portable restroom system includes plural individual restrooms connected as a pod structure and supported by a chassis. Each restroom includes: a lockable door that opens to outside the pod structure; and a tank having a toilet with a toilet opening, a urinal with a urinal opening, a cleaning port, and two vent holes, all as part of a unitary tank body that defines an interior volume.

Abstract: A portable restroom system includes plural individual restrooms connected as a pod structure and supported by a chassis. Each restroom includes: a lockable door that opens to outside the pod structure; and a tank having a toilet with a toilet opening, a urinal with a urinal opening, a cleaning port, and two vent holes, all as part of a unitary tank body that defines an interior volume.

Abstract: A method of selectively sensing the concentration of a target gas in polluted ambient air comprises the steps of: —providing a target gas sensor (220) sensitive to the target gas; —providing a first gas flow derived from the ambient air, from which first flow the target gas is substantially removed; —providing a second gas flow derived from the ambient air, substantially comprising the same target gas concentration as the ambient air; —exposing the target gas sensor to the first gas flow during a first time interval, and obtaining from the sensor a first output signal (Smf); —exposing the target gas sensor to the second gas flow during a second time interval not overlapping with the first time interval, and obtaining a second output signal (Smu); —calculating the difference (S?) between the first and the second output signals; calculating the concentration of the target gas from the calculated signal difference (S?).

Abstract: A portable restroom system that includes: a utilities trunk; a waste water holding tank; and a plurality of restroom units. The utilities trunk and the waste water holding tank each extend through each one of the plurality of restroom units.

Abstract: A portable restroom system that includes: a utilities trunk; a waste water holding tank; and a plurality of restroom units. The utilities trunk and the waste water holding tank each extend through each one of the plurality of restroom units.

Abstract: A method of selectively sensing the concentration of a target gas in polluted ambient air comprises the steps of: —providing a target gas sensor (220) sensitive to the target gas; —providing a first gas flow derived from the ambient air, from which first flow the target gas is substantially removed; —providing a second gas flow derived from the ambient air, substantially comprising the same target gas concentration as the ambient air; —exposing the target gas sensor to the first gas flow during a first time interval, and obtaining from the sensor a first output signal (Smf); —exposing the target gas sensor to the second gas flow during a second time interval not overlapping with the first time interval, and obtaining a second output signal (Smu); —calculating the difference (S?) between the first and the second output signals; calculating the concentration of the target gas from the calculated signal difference (S?).