Home Site Map/Search Calculator Contact Us
                                               Products

 
Rip Rap AASHTO Sub Base Chemical Analysis HMA Concrete Railroad


Sub Base Specifications

  DEL DOT MARYLAND GRADED AGGREGATE NON-DOT
SIZE TYPE "A" TYPE "B" SUBBASE BASE MODIFIED CRUSHED
  CR-1 CRUSHER RUN CR-6 GAB   SELECT
2 1/2" 100%         100%
2"     100% 100%    
1 1/2"   100% 90-100% 95-100% 100%  
1" 60-80%         70-95%
3/4"   60-80% 60-90% 70-92% 80-95%  
3/8"       50-70%    
# 4 20-50% 20-50% 30-60% 35-55% 40-75% 35-70%
# 10   15-40%     30-55%  
# 20 10-30%         30-50%
# 30       12-25%    
# 40            
# 100 2-20% 2-20%     10-25% 10-30%
# 200     0-15% 0-8%