Q.7 a) Explain the Line of Balance Technique (LOB) of planning and scheduling. In what types of projects is this technique suitable? b) The construction of a housing project involves the activities given in Table Q.7. The contract is for the construction of twelve houses in 60 davs. The man hours for each activity and the crew size/house are also given. Prepare an LOB schedule for the contract. Assume a minimum buffer time of one day and six 8 hours day per week. What is the overall duration and when will the first team of roof leave the site. (3 marks) Table Q.7 Activity Description Predecessors Man-hours Team size/section 10 Substructure 100 4 8. Superstructure Roof 10 20 200 60 20 4 30 90 6. Carpenter Plumber Electrician 40 30 50 30 45 3 60 30 40 70 Plaster 40,50,60 120 80 Final fix 70 350 24 (17monlco)