Design Checklist Done N/A1. ______ 0.06' drop between invert in and invert out o f manhole (same size pipe for !" lined manholes. #anholes pla$ed over e%istin& $olle$tor mains shall mat$h the slope of the pipe. New $onne$tions to e%istin& manholes with $on$rete $hannels shall have a 0.1' drop for similar diameter pipes.(. ______)here two dissimilar sewer line diameters meet at a manhole* use the 0.+ depth rule to determine the drop a$ross the manhole, -nvert .levation. out / (0.+ % Diameter out (0.+% Diameter in 0 -nvert .levation in. -f thelar&er line is a sewer inter$eptor lar&erthan 11 in$hes in diameter* then mat$h $rowns of the two pipes. 2. ______3how 10045ear flood plain on plans. All manholes shall be set a minimum of one (1 foot above flood plain elevation. 6. ______Note the name of the li$ensed surve5or/en&ineer who provided the field topo&raph5 on the plans. -n$lude the date when the surve5 was $ompleted. 1. ______ #anholes and $leanouts shall not be lo$ated in low point of verti$al $urves or $urbflow lines. -f no other lo$ation is possible* then waterti&ht lo$7in& lids must be spe$ified. 6. ______#anholes and $leanouts lo$ated outside of paved areas re8uire water ti&ht lo$7in& lidsand $on$rete $ollars. 9. ______ 3trai&ht verti$al and horizontal ali&nment between manholes is re8uired. +. ______ #anholes installed at all $han&es in &rade* ali&nment and pipe interse$tions. #anholes lo$ated on inter$eptor sewers 11: in diameter or lar&er* shall be re8uired tohave prote$tive $oatin&s installed per ;ier$e n publi$ and private s5stems* manholes are re8uired at terminus of all sewer mains . 1(. ______ #a%imum distan$e between manholes is 210 feet.