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 MIL-HDBK-1021/1
TABLE 14
Access Apron Design Criteria
Item
Criteria
Load-bearing
Design strength shall be same as for hangar
capacity
floor.
Surfacing:
Type
Portland cement concrete.
Fuel spillage
Entire apron to be resistant to effects of
fuel spillage.
Smoothness
Maximum irregularity shall be 1/8 inch in 10
feet.
Size:
Area requirements
Minimum of 50 feet wide, length at least as long as the
width of the hangar door. See Figure 26 for typical plans.
Grades
Smooth continuation of adjacent parking apron
and hangar floor. With maximum of 1.5% and
minimum of 0.5% in any direction.
See MIL-HDBK-1005/3.
Shoulders:
Width
Same as apron shoulders.
Treatment
Same as for apron shoulders.
Tiedown anchors
None required on access apron.
69
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