COVER STORY | ADVERTORIAL
Manhole after paved and compacted
MAINTAINING
SMOOTH RIDEABILI T
Y
Rapid manhole risers provide flush fit every time By Angus W . Stocking
T he construction goal for any asphalt paved surface is a smooth rideable surface that lasts . A smooth surface reduces damage to the pavement , necessitating fewer repairs . It improves fuel efficiency and reduces wear and tear on vehicles , making the choice for asphalt not only a great economical decision , but is said to significantly reduce the noise generated by car and truck tires rolling over its surface . It provides a quieter ride experience for the motorist . Asphalt was first used to pave streets in the 1870s . At first , naturally occurring
“ bituminous rock ” was used , such as sourced at the Ritchie Mines in Ritchie County , West Virginia from 1852 to 1873 . Today , typical asphalt pavements consist of two or three asphalt layers which are installed successively . The last thing anyone wants is that hard-wearing , beautiful wear-course surface interrupted by an ill-seated man-hole cover causing a sudden dip or shock-absorbing rumble to the motorist . Enter American Highway Products ( AHP ) based in Bolivar , Ohio . The company has been manufacturing and
“ Pivoted Turnbuckle ” Manhole Riser Installation
offering steel manhole risers and catch basin risers since 1978 . These adjusting rings can move the manhole up or down in ¼ ” increments to ensure an accurate , secure fit resulting in a smooth driving surface connection with the asphalt-paved road . “ Our riser expands into the round manhole casting like ‘ a pressed-in bearing ,’ obtaining full circumferential engagement in the casting , which is very reliable and does not come loose in heavy traffic ,” stated Scott Fier , AHP president . “ Our number one product by far is our patented Pivoted Turnbuckle www . callape . com [ 6 ] 1.800.210.5923