cameroon gce A level 2022 building construction project management 2
cameroon gce A level 2022 building construction project management 2
The drawings on page 4 are the extracts from a technical file for the construction of a reinforced concrete structures to
carry two water reservoirs for a secondary school in Community. The structure is made up of 4 identical footings of 80cm
x 80cm lying on a lean concrete of 5cm thick. It has 4 ground Beams just immediately after the ground level. The
dimensions of the structural elements are as show n on the draw ings.
Evaluate the surfaces of formw ork for the following:
a) Tire reinforced concrete pillars.
b) The reinforced concrete ground beams.
c) The reinforced concrete floor.
d) The reinforced concrete upper beams.
e) Total surface area of fomrwork.
(6 marks)
(4 marks)
(4 marks)
(14 marks)
(4 marks)
Total (40 Marks)
Question 2
After technical studies of a certain project; the following information was obtained:
Table 1: Quantities
| S/N Designation | Unit rn |
Quantity |
| 1 | Excavation | 142 |
777
2 Lean Concrete m 17.6
‘i
3 Reinforced Concrete m 38
4 Formwork nr 82
| 5 Striking formwork 6 |
nr | 78 |
| Reservations 7 Water proofing |
m m” |
8 48 |
8 Backfilling m 96
Table 2: Batching of concrete for a 1mJ
| S/N I 2 |
Designation Lean concrete Reinforced concrete |
Cement 150kg 350kg |
Sand Gravel Reinforcement | ||
| 4001 4201 |
8001 8001 |
||||
| 120kg | |||||
| Table 3: Unit time designation | |||||
| S/N | Designation | Unit time | S/ N | Designation | Unit time |
1 Mixing of concrete 5.5h/m‘ 6 Striking of formw ork 5.5h/nr
2 Casting of concrete 41i/m 7 Striking of formw ork reservation 5.5h/nr
3 Formwork 51i/nr 8 Placing of water proof 5.51i/nr
4 Reinforcement 75h/ton 9 Excavation 5.5h/m ’
| 5 | Reservation | 16h/nr | 10 | Backfilling | 5.5li/rn ‘ |
| Work to be done |
a) Determine the quantity of cement, sand, gravel and reinforcement for the project 3×4= (12 marks)
b) Evaluate the time spent for; excavation, lean concrete, reinforced concrete, formw ork, reservation,water proofing
2.5 \6 = (15 marks)
c) Deduce the labour hours spent for:excavation, lean concrete, reinforced concrete, formwork, reservation and water
| proofing. | (3 marks) Total (30 marks) |
