Given an available area that is 400 ft by 500 ft, design a suitable parking lot layout for achieving each of the following objectives: (a) Provide the maximum number of spaces. (b) Provide the maximum number of spaces while facilitating traffic circulation by providing one way flow on each aisle.

Question

What will be an ideal response?

Answer 1

(a) Provide the maximum number of spaces (accomplished with spaces at a 90° angle).
Assume space dimensions:
Stall width = 8.5 ft
Stall length = 18 ft
Aisle width = 24 ft
Aisle + row width = 24 + 18 + 18 = 60 ft
Allow 25 ft at each row end for traffic circulation,
Number of aisles = 500 ft / 60 ft = 8.33
There can be 8 aisles with 2 rows per aisle
Number of spaces per row = [400 ft – (2)(25 ft)] / (8.5 ft/space) = 41
Total number of spaces = (8 aisles)(2 rows/aisle)(41 spaces/row) = 656 spaces
(b) For optimum traffic circulation, spaces are at a 45° angle (herringbone
design).
Allow 25 ft at each row end for traffic circulation,
Number of aisles with 2 rows each = 500 ft / 45 ft = 11.11
There can be 11 aisles with 2 rows per aisle
Number of spaces per row = [400 ft – (2)(25 ft)] / (12.02 ft/space) = 29
Total number of spaces = (11 aisles)(2 rows/aisle)(29 spaces/row) = 638 spaces