CAMCAST Full Prefabricated Overcast Systems

CAMCAST is a strong and durable full overcast system that provides excellent air tightness even in high water gage. Easily transportable, the CAMCAST can be assembled quickly without special tools or heavy lifting.

Features include:

• Construction: 12 gage galvanized steel planks having 2-1/2" x 6-1/2" trapezoidal corrugations, top and sides.
• Sizes: Per mine requirements - Virtually any size available.
• Strengths and Stiffness: Free span steel planks are lapped and bolted on 2' centers using plated fasteners. Safe allowable load on 20' span is 50 PSF. Well in excess of MSHA requirements... without beams... and without spreading or separating.
• Air tightness: seal strip is sandwiched and compressed between adjacent planks with plated fasteners. Camber closure # 101-2, or precast concrete closure seal the ends.
• Clearance: Planks are only 2-1/2" deep on top, 2-1/2" wide per side. This means CAMCAST can be run under brows eliminating the need for costly and time consuming headwalls even in low coal. Greater cross sectional area for ventilation is achieved as well.
• Resistance to Bottom Hoove: CAMCASTS are intended for installation without concrete footers or base channels. Bottom hooves around 2-1/2" walls rather than up against wider construction.
• Handling, Transportation and Storage: Planks nest. Therefore several CAMCASTS can be loaded on one supply car.
• Erection Time: 4-men... Less than one(1) shift.