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Q1— Section header —
1.1State THREE reasons why all roads around the country need proper drainage. (3\
1.2List FIVE p laces where lon gitudinal side drain are used and commonly placed
1.3List FOUR important requirements that need to be followed and implemented when choosing and packing the correct type of stones (rocks\ into a gabion
1.4State FIVE problems that may arise and may be the cause of an insufficient sub surface drainage system
1.5List THREE requirements that are necessary for manhole cover when constructing a manhole for
1.6Explain the excavation requirements that need to be followed when excavating trenches for slotted agricultural drains (5 1.
1.7.2What is geofabric material made from? State THREE reasons /purposes for using geofabric material in road drainage
Q2— Section header —
2.1Name FIVE aspects and characteristics that rigid and flexible pavement surface course must
2.2To successfully build a concrete pavement, one needs to ens ure that the concrete is of exceptional quality especially in terms of the
2.3.2Workability Consistency (2\ (2\
2.4Dis cuss FIVE situations where concrete block paving will excel in terms of cost and performance when compared with other types of pavements. (5\ (12030534\
2.5Name FOUR different grade of bitumen binders used to bind the aggregates
2.6List FOUR tests that can be conducted/ used to determine the performance and quality levels of bitumen. (4\
2.7ist THREE advantages when using the followin g types of asphalt as a roa
2.7.1Continuous ly graded asphalt (3\
2.7.2Gap graded asphalt (3\
2.7.3Open graded asphalt (3\
2.8Name the differen layers of materials that will be applied on to the following types of surfacing seals
2.8.1Double seal (3\
2.8.2Single seal (3\ [40]40
Q3— Section header —
3.1Road maintenance is essential to ease traffic flow without unnecessary interruption.
3.1.2Define the concept road maintenance Give THREE examples of rigid pavement maintenance. (2\ (3\
3.2Indicate whether the following statements are TRUE or FALSE. rite only 'True' or 'False next to the question number (3.2.1
3.2.5\in the ANSWER BOOK.
3.2.1A buffer zone can divert or separate traf fic to ensure the safety of workers when doing road maintenance.
3.2.2Traffic cone are only used to indicate a road detour at night
3.2.3Work area must be made visible and be barricaded from traffic.
3.2.4A cross over should allow traffic to flow smoothly from its normal roadway position into a temporary position
3.2.5A t ransition area is the ar ea in which drivers are no longer required to obey temporary traffic signs. (5
3.3Describe THREE types of road reserve maintenance work and /or activit ies that need to be done
3.4Asphalt overlays are meant to produce a more durable road surface , which will also provide a better and smoother driving surface. Explain FIVE steps that must be followed when applying an asphalt overlay
3.5Differentiate between the followi ng types of road maintenance
3.5.2Road reconstruction Road rehabilitation (2\ (2\ 3. Identify the causes for the following types of failure
3.6.4Transverse cracking Shattered slabs and corner breaks Punch outs Deep spalling (2\ (2\ (2\