ANALYSIS OF CRITERIA FOR PAVEMENT SLOPES.
Abstract
An analysis was made of existing and future airport surface requirements to develop valid design criteria for the gradient parameters of runways, taxiways and aprons. A study which has included aircraft performance requirements, airport operation history and pilots' comments led to the following recommendations. (1) The effective gradient should be redefined to include the effect of runway grade on different segments of ground operation. The new effective gradient should be calculated by the following relationships: For take-off (G sub e)sub TO = G sub 1 + G sub 2 + 2 G sub 3 + 4 G sub 4/8 and for accelerate-stop (G sub e)sub AS = G sub 1 + G sub 2 - G sub 3 - G sub 4/4 where G sub 1, G sub 2, G sub 3 and G sub 4 are equal to the average gradient of the first, second, third and fourth quarter of the runway, respectively. In general, take-off performance is critical on uphill or 'cup shaped' runways and accelerate-stop is critical on downhill or 'humped' runways. (2) The take-off runway length correction should be calculated for each operational aircraft. (3) No change is recommended in the existing maximum effective gradient (1 per cent) or the existing maximum longitudinal gradient (1-1/2 per cent) for runways or taxiways. (4) No change is recommended in the criteria governing the length of vertical curves, the distance between points of intersection of vertical curves, the line-of-sight criteria, or the transverse grade. (5) The maximum slopes on aprons should be increased to 1-1/2 per cent. No change is recommended in fueling-area slopes. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- May 01, 1965
- Accession Number
- AD0650842
Entities
People
- Frank Turner
Organizations
- MRIGlobal