Chainless Conveyor Vertical Curves Computaion

HOW TO COMPUTE VERTICAL CURVE DIMENSIONS

VERTICAL CURVE DIMENSIONS:

C	R	L	D	Track Length
30º	3'	3'	9 5/8"	3' 1 3/4"
45º	3'	4’ 2 7/8”	1' 9 1/8"	4' 8 1/2"
60º	3'	5' 2 3/8"	3’	6’ 3 3/8”
30º	4'	4’	1’ 7/8”	4’ 2 1/4”
45º	4'	5’ 7 7/8”	2’ 4 1/8”	6’ 9 3/8”
60º	4'	6’ 11 1/8”	4’
30º	5'	5’	1’ 4 1/8”	5’ 2 7/8”
45º	5'	7’ 13/16”	2’ 11 1/8”	7’ 10 1/4”
60º	5'	8’ 715/16”	5’	10’ 5 5/8”

For an elevation change greater than shown on the above charts, solve for the remainder

Remainder -- Actual Elevation Change (Vertical Drop) -(minus) “D” (Minimum Drop) See chart

Then use remainder to solve for “S” and “L”

Calculation Example

Given - 4’ radius, 60 degrees, 9’ drop, vertical curve

S=0 (For minimum rise)	S = 5’ x 1.155	L = 5’ x .577 + Minimum L
Total Drop 9’	= 5’ - 9 5/16”	= 2’ - 105/8” + 6’ - 111/8”
Less Minimum Drop 4’		= 9’ - 93/4”
Remainder = 5’

LOAD CLEARANCE CHART (VERTICAL CURVES)

Trolley	Curve Angle
Centers	30º	45º	60º
12”	10 3/8”	8 7/16”	6”
18”	15 9/16”	12 1/8”	9”
24”	20 3/4”	16 15/16”	12”
30”	25 15/16”	21 3/16”	15”
36”	31 1/8”	25 7/16”	18”
48”	41 9/16”	34 5/8”	24”