The Nelligen Road and Bridge construction entails 27 activities. Create two production sequences for the road section by grouping the road activities within 16-19 work packages:

1. Safety barriers (roads)
2. Clearing and grubbing 
3. Soft soil treatment (abutment)
4. Excavations and concrete line open drains of trenches for open drains
5. Batter stabilisation (soil nailing)
6. Signposting 
7. Base course pavement layer 
8. SO and SA gutter
9. Drainage (excavation and installation of pipes, pits and subsoil drains)
10. Asphalt
11. Pavement marking
12. Footpath
13. Subgrade preparation
14. Landscaping
15. Gabion retaining walls
16. Sprayed bitumen sealing
17. Erosion and sedimentation control
18. Pedestrian fencing
19. Earthworks - cut or fill 
20. Sub base pavement layer

Produce a line of balance for these activities within the timeframe of 12-24 months. The cycle size, batch size, number of teams, and buffer for the activities are as follows:

Activities	Description	Team details	Monthly (or two fortnights) productivity
Asphalt	Place and compact asphaltic concrete.	1 Paving machine, 1 steel roller, 1 rubber tyred roller, 5 workers to control trucks, check levels, control traffic	6000m
Base pavement layer	Place and compact imported quarry subbase and level accurately.	1 grader, 1 water cart, 1 vibrating steel rollers, rubber tyred roller, 2 workers to check levels and monitor plant	1100m
Batter stabilisation (soil nailing)	Drill and insert steel bars, grout holes	Track drill, Truck, grout pump 4 workers	360m
Clearing and grubbing	Remove vegetation, grass and tree roots. Transport to tip.	1 Bulldozer, 1 loader, 2 trucks with 12 tonne capacity, 2 workers to assist in setting out, control and direction of plant.	1800m
Drainage excavation and installation of pipes, pits & sub soil drains	Drainage- excavation and installation of pipes, pits and subsoil drains	1 backhoe, 1 truck, 12 tonne, 4 workers to place pipes and check level	1400m
Earthworks cut and fill	Earthworks - Cut: Strip and load topsoil, excavate down to top of subgrade, load material and rough trim the top of subgrade. Earthworks - Fill: Spread fill material dumped by trucks, add moisture to aid proper compaction.	Cut: 1 Excavator, 4 trucks with 12 tonne capacity, 2 workers to assist in setting out, level control and direction of plant. Fill: 1 grader, 1 water cart, 2 vibrating steel drum rollers, 2 workers to assist in setting out, level control and direction of plant. Use trucks from excavation,	800m
Erosion and sediment control	Construction of sedimentation basins and surface drainage channels to prevent sediment entering clean watercourses.	1 Excavator, 1 truck with 12 tonne capacity, 2 workers to assist in setting out, control and direction of plant.	1800m
Excavation and concrete lining of table and catch drains	Excavate and shape to correct level	1 excavator, 2 trucks, 4 workers to check and trim levels,  pour and finish concrete	1000m
Footpath	Pour concrete on one side of road plus landscaping of remainder of footpath.	1 small excavator, 1 truck, 6 workers to check levels, setup formwork and reinforcing, pour concrete, cure concrete	900m
Gabion retaining wall	Construct rock filled, wire gabion wall	1 truck with small crane, 1 small backhoe to move rock fill, 4 workers to place rocks, and tie wire baskets together	180m
Landscaping	Landscaping of medians, footpaths and batter slopes. Spread topsoil, lay turf, and plant trees.	1 front end loader to spread soil, 4 workers to lay turf and plant, water and fertilise trees.	2600m
Pavement marking	Paint line marking, place raised pavement markers	1 line marking machine, 6 workers to set out and place pavement markers	11000m
Pedestrian fencing	Construct pedestrian fencing at back of footpath	1 truck, 4 workers to pour footings and set up fence	2600m
Piers	Setup formwork, place reinforcement, pour concrete, cure concrete for piers	1 crane, 1 barge, 1 pusher barge, 4 workers to check levels, setup bearings, set up formwork, pour and cure concrete	2 piers
Safety barriers (road)	Install posts for the safety barriers and connect the wire rope barriers	Backhoe with post borer, 1 truck, 4 workers to set out and attach barrier rails	1700m
Signposting	Pour footings, erect structures, mount signs	1 truck with small crane, 1 small backhoe for excavation, 4 workers to pour footings, fix signs to structure	5800m
SO and SA kerb and gutter	Set out levels, place and compact base, pour and finish concrete  gutter.	1 Kerbmaker machine, 4 workers, 1 small compactor	1800m
Soft soil treatment at esatern abutment	Drill and insert steel tubes, fill with concrete, construct wharf	1 Pile boring machine, 1 truck, 4 workers to check levels, place reinforcement, pour concrete.	76 piles
Sprayed bitumen sealing	Spray bitumen, spread aggregate, roll aggregate.	Specialist crew - sprayer, 4 trucks, rubber tyred roller 6 workers	6000m
Sub base pavement layer	Place and compact imported quarry subbase in one 300mm layer. Level accurately.	1 grader, 1 water cart, 2 vibrating steel rollers, 1 rubber tyred roller,2 workers to check levels	1100m
Sub grade preparation	Accurately level the top of the excavation or top of fill. Compact to required density.	1 grader, 1 water cart, 2 vibrating steel rollers, 1 rubber tyred roller, 2 workers to check levels	1400m