Marine Holding Capacities>>>

Soil Description
Blow
Count (N)
MR-SR
Ultimate:
40 kips
MR-1
Ultimate:
40 kips
MR-2
Ultimate:
40 kips
Very dense/cemented sands
Coarse gravel and cobbles
60-100+ N/A 36-40 (1,2,3) 21-28 (2,4)
Dense fine compacted sands
very hard silts or clays
45-60 32-40 (2,3,4) 24-36 (2,4) 15-22 (2,4)
Dense clays, sands and gravels
hard silts and clays
35-50 24-34 (2,4) 18-20 (4) 12-18 (4)
Medium dense sandy gravel
very stiff to hard silts and clays
24-40 18-24 (4) 15-20 (4) 9-12 (4)
Medium dense coarse sand and sandy gravel
stiff to very stiff silts and clays
14-25 14-18 (4) 10-15 (4) 7-10 (4)
Loose to medium dense fine to coarse sand
firm to stiff clays and silts
7-14 9-14 (4,6) 8-12 (4,6) 5-8 (4,6)
Loose find sand, alluvium, soft-firm clays
varied clays, fill, fine saturated silty sand
4-8 9-14 (4,6) 8-12 (4,6) 5-8 (4,6)
Peat, Organic silts
Inundated silts, fly ash
0-5 9-14 (4,6) 8-12 (4,6) 5-8 (4,6)
  1. Drilled hole requred to install
  2. Installation may be difficult. Pilot hole may be required
  3. Holding capacity limited by soil failure
  4. Wide variation in soil properties reduces prediction accuracy. Pre construction field test is recommended
  5. Not recommended in these soils

For General Holding Capacities click here.

For Utility Application Holding Capacities click here.