Laserfiche WebLink
~~ ~ ~ ~ ~ ~ III IIIIIIIIIIIIIIII <br />RODNEY GEMS -Structural Engineer <br />~~ <br />145 Eost 6th Street, Suite 1. Durongo <br />Colorodo 81301 303-247-3005 <br />January 12, 1981 <br />Terry Sadler <br />799!3 C.R. 501 <br />Bay~Eield, CO <br />Ret Preliminary report on the Sadler House, <br />:7998 C.R. 5'01, Bayfield, Colorado <br />Dear Terry <br />I have investigated your house for cracks in the gyp board <br />walls and ceiling. The cracks occur in each room on the walls <br />and there is a crack in the ceiling of the living and dining <br />rooms which extends continuously through each room. By your <br />account, these cracks did not appear until Spring of 1979, <br />approximately 2~ years after you had been living in the house. <br />The house is a one story wood framed house which was built <br />approximately 32 years ago and remodeled within the past LO <br />years. It is founded upon an alluvium of cobbles, gravel and <br />silts. The floor area is approximately 1300 S,F. The floor is <br />a wood framed floor with a crawl space. <br />There is a gravel quarry approximately 120 feet to the west <br />of 'the house. By your account, there was a conveyor belt <br />loc~itedepprox,imately 126 feet from the house and numerous trucks <br />'and heavy earth moving equipment which were operated within the <br />pro:timity of the conveyor. The equipment operated at various <br />times during 'the past two years, principally in the spring, <br />summer and fall. During the operation of the equipment, numerous <br />loose objects such as,a hanging stained glass ornament in the <br />window and glases in a cabinet were disturbed, Some windows <br />rattled and the vibra~iona were felt by those in the house. <br />There .was not any equipment at the site of the gravel quarry <br />dur:Lng my visit although there was evidence man ifeated by excavated <br />hil:Lsides and tracka.of,tracked equipment, <br />D IS~'USS ION ~ <br />'.~ <br />;It^.The observation e,of~the previously noted disturbances <br />con_oapond to an earthquake intensity of IV as described by <br />the Mod of ied Mercali Scale.' The Modified Mercall Scale is one <br />of the most common intensity_acalea and is used to supplement <br />a. {, <br />