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Access Covers / Monument Boxes

Prices
$56.93
1 - 10
$54.87
11 - 24
$53.37
25 - 99
$52.88
100 or more
Prices
$59.93
1 - 10
$55.52
11 - 24
$51.11
25 - 99
$48.84
100 or more

Benchmark Access Covers & Survey Boxes

Berntsen's Bench Mark Access Covers (BMAC) are based on designs developed for the NGS bench mark. Access covers are usually used to provide a protective cover for sectional rod monuments (stainless steel or aluminum rods) like those used for geodetic control or GPS.

Berntsen BMAC1 monument box access coverBerntsen offers a variety of models of the BMAC Bench Mark Access Covers:

Model BMAC-1, the latest refinement of the original concept, is designed to fit over a section of 5 inch (127mm) PVC Well Casing. Due to the exposed (raised) dual (2) hinge design, the BMAC-1 is recommended only for general use on open land. A ring of concrete is usually poured around the BMAC outer ring and PVC pipe.

Soon after the introduction of BMAC-1, our customers requested a more versatile access cover. one that could be used with standard 6" (152mm) Schedule 40 PVC pipe. Model BMAC-6 (fits inside 6" PVC pipe) are further refinements of the original design. Most notable changes are a much more heavy-duty design with significantly more material at critical points and a stronger and fully recessed hinge. This cover is therefore suitable for use in pavement areas such as streets or highways, as well as on open land. Like the BMAC-1, a ring of concrete is often poured around the cover's outer ring.

We also offer the BMAC6 with a tamper-proof screw that requires a special tool to open.

Berntsen BMAC Acees Covers & Survey Boxes

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