I don't think a 10'x10' NPRM (100 sq ft) weighs a total of 5000 pounds with concrete blocks. 50 lbs per square foot? I don't think so...
If you have one of the small 3'x3' non penetrating mounts (9 sq ft) and put six 25 pound 16" length concrete blocks on it, that's 16.6 lbs per sq ft. On Thu, Dec 18, 2014 at 7:48 AM, Jon Langeler via Af <[email protected]> wrote: > > Non-pen mounts with block and antennas. Probably closer to 50lbs per foot. > > Anyone know a reasonable PE? > > Thanks > > Jon Langeler > [email protected] > > > On Dec 18, 2014, at 9:36 AM, Chuck McCown via Af <[email protected]> wrote: > > > > Many jurisdictions allow 3 pounds per square foot additional load > without additional engineering. > > > > -----Original Message----- From: Jon Langeler via Af > > Sent: Thursday, December 18, 2014 7:09 AM > > To: [email protected] > > Subject: [AFMUG] rooftop weight study? > > > > We've been asked to provide a study of rooftop weight allowances in > order to install a bunch of rooftop mounts. Has anyone else had to do this? > Any info or good engineering firms to recommend? > > > > Jon Langeler > > [email protected] >
