A company is propose plans to develop a new building. They have established the project activities and their immediate predecessor activities together with their estimated activity durations according to the information described in the following table. (Sebuah syarikat sedang mencadangkan rancangan untuk membangunkan bangunan baru. Mereka telah menubuhkan aktiviti projek dan aktiviti pendahulu serta-merta bersama-sama dengan anggaran tempoh aktiviti mereka mengikut maklumat yang diterangkan dalam jadual berikut. Table 2: Project activities and predecessor together with time estimates for the building construction. [Jadual 2: Aktivni projek dan pendahulu bersama-sama dengan anggoxan masa bagi membuaanbangunan.) Code Activity Immediate Duration (weeks) (Kod) Aktivid Predecessor(s) (Tempoh Masa (Minggu (Pendahulu Serta-mertal A None 18 Buy the land [Beli tanah B A 8 Get the construction permission Dapatkan kebenaran pembinaan B 6 Excavate Menggal D Erect warehouse /Mendirikan gudang) E CD Electrical work IKeva elekurki F F E E 4 Plumbing work [Keva perpaipan G D 10 Paint interior Cat babagian dalam H E 11 Clean up warehouse (Bersihkan gudang) 1 G H 3 Move in machines Masukkan mesin (a) Determine the forward and backward pass for the construction activity. [Tentukan laluan ke hadapan dan ke belakang bagi aktiviti pembiraan. (10 Marks/ Markah ) (b) What is the slack time for each individual activity, I4pakah masa kendur bagi setiap aktiviti individu. (6 Marks/ Markah w (c) Construct Gantt Chart for the whole construction activity. [Bma Carta Gantt bagi keseluruhan aktiviti pembangunan (4 Marks/ Markah