A rig mat frame has at least two longitudinal frame members and at least two lateral frame members defining a deck insert opening therebetween. Each longitudinal frame member has a C-shaped channel facing the deck insert opening and extending along the length of the longitudinal frame member. At least one C-shaped channel has a longitudinally extending flange with a channel opening providing access into the C-shaped channel. A flange panel is removably fastened to the frame and closes the channel opening when the flange panel is fastened to the frame. A plurality of deck inserts are disposed within the frame and extend across the deck insert opening with the ends of each deck insert disposed in the C-shaped channels. And each of the plurality of deck inserts is removable from the C-shaped channels when the deck insert is positioned in alignment with the channel opening and the flange panel is disconnected from the frame.

Modular foundation systems for assembling floating platform assemblies. Modular foundation systems comprise a base mat sized to engage retaining members within a grooves formed in the upper surface of the base mat. Using a combination of a number of base mats and retaining members, a platform assembly of virtually any desired size and shape can be readily assembled.

Modular foundation systems for assembling floating platform assemblies. Modular foundation systems comprise a base mat sized to engage retaining members within a grooves formed in the upper surface of the base mat. Using a combination of a number of base mats and retaining members, a platform assembly of virtually any desired size and shape can be readily assembled.

Disclosed are interlocking elongate composite bamboo industrial mats having an upper layer with two or more elongate laminated composite bamboo panels, an intermediate layer with a plurality of elongate laminated composite bamboo panels arranged in parallel and perpendicular to the laminated composite bamboo panels in the upper layer, and a bottom layer with a plurality of elongate laminated composite bamboo panels arranged in parallel to the upper layer. The three layers are secured together with fasteners consisting of a bolt, an outward-facing concave washer engaged with the bolt head, and a sleeve nut having an outward-facing washer engaged with the sleeve nut head. The interlocking elongate composite bamboo industrial mats are configured to interlock end-to-end or alternatively, side-to-side. Each of the elongate laminated composite bamboo panels comprises a plurality of kiln-dried glue-dipped elongate asymmetrically fractured bamboo strips compressed into a solid panel devoid of air spaces.

Disclosed are interlocking elongate composite bamboo industrial mats having an upper layer with two or more elongate laminated composite bamboo panels, an intermediate layer with a plurality of elongate laminated composite bamboo panels arranged in parallel and perpendicular to the laminated composite bamboo panels in the upper layer, and a bottom layer with a plurality of elongate laminated composite bamboo panels arranged in parallel to the upper layer. The three layers are secured together with fasteners consisting of a bolt, an outward-facing concave washer engaged with the bolt head, and a sleeve nut having an outward-facing washer engaged with the sleeve nut head. The interlocking elongate composite bamboo industrial mats are configured to interlock end-to-end or alternatively, side-to-side. Each of the elongate laminated composite bamboo panels comprises a plurality of kiln-dried glue-dipped elongate asymmetrically fractured bamboo strips compressed into a solid panel devoid of air spaces.

A sand boil mitigation pad includes a first layer including a plurality of laminated support mats nested and attached together, and defining a deck. A second layer includes a plurality of the laminated support mats configured as runners, wherein the runners are positioned perpendicular to the laminated support mats of the deck and are attached thereto, and wherein adjacent ones of the runners are spaced apart. A third layer includes a plurality of the laminated support mats configured as bars, wherein the bars are positioned perpendicular to the runners and are attached to one or both of the runners and the deck.

A sand boil mitigation pad includes a first layer including a plurality of laminated support mats nested and attached together, and defining a deck. A second layer includes a plurality of the laminated support mats configured as runners, wherein the runners are positioned perpendicular to the laminated support mats of the deck and are attached thereto, and wherein adjacent ones of the runners are spaced apart. A third layer includes a plurality of the laminated support mats configured as bars, wherein the bars are positioned perpendicular to the runners and are attached to one or both of the runners and the deck.

A modular hybrid engineered wood composite road includes a plurality of bars defining a first layer, a plurality of runners defining a second layer, and a plurality of deck sections defining a third layer. The bars are positioned on the ground, spaced apart, and are positioned perpendicularly to the direction of traffic flow. The runners are formed from elongated metal members and are laid on the bars perpendicularly to the bars and parallel to the direction of traffic flow. The deck sections are positioned on the runners adjacent one another, and such that the deck sections are positioned perpendicularly to the direction of traffic flow.

A modular hybrid engineered wood composite road includes a plurality of bars defining a first layer, a plurality of runners defining a second layer, and a plurality of deck sections defining a third layer. The bars are positioned on the ground, spaced apart, and are positioned perpendicularly to the direction of traffic flow. The runners are formed from elongated metal members and are laid on the bars perpendicularly to the bars and parallel to the direction of traffic flow. The deck sections are positioned on the runners adjacent one another, and such that the deck sections are positioned perpendicularly to the direction of traffic flow.