NRSWA Reinstatement Sub Base Practice Questions – Set 1
#1. Which material is unique to a Composite carriageway design
#2. Which of the following is not an advantage of using Foam Concrete for reinstatements
#3. What is the combined thickness of the Granular Base and Sub-base layers when constructing a Type 3 Flexible carriageway, using a Method A (All Permanent) construction with a class B Backfill
#4. How many tonnes of GSB 1 material would be required for reinstating the Sub- base layer in a flexible footway if the excavation measured as follows: 100m(L) & 300mm(W). Assume the density of stone to be 2.2T/M3
#5. When using the Base Equivalence method to reduce the thickness of the granular base layer in a type 4 flexible road, what ratio must be followed:
#6. What is the curing period of CBGM when used on a Type 4 carriageway
#7. How many days must a contractor retain cobbles or setts before disposing of them and replacing with CBGM
#8. What is the required thickness of Foam Concrete when constructing the Base layer in a type 3 road?
#9. How many passes would be required when operating a 600-100Kg Single drum roller to compact 100mm of GSB1
#10. What is minimum thickness of CBGM in a type 4 Composite carriageway design, using method A to construct?
#11. What is the total depth of the construction layers in a type 3 flexible carriageway, All Permanent method of construction, using GSB for Base & Sub-base. Quality of backfill selected, Class D?
