PEMBINAAN KEM 2 SKN RAJD, OYA, SIBU

Executive Agenda

Project: Cadangan Pembinaan Kem 2 SKN RAJD, Oya, Sibu, Sarawak (Reka & Bina).
Contract No: JKR/IP/CKUB/225/2020 off Sibu-Bintulu Road, Sibu Division.
Key Parties: Pasukan Projek Khas 2 (JKR); DPI Consult Sdn. Bhd.; Wekajaya Sdn. Bhd.
PEPC Sign-Off: DPI CONSULT (PEPC No. C17478) on Drawing DPI/C/KEM2Sibu/C/RD/201.

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Original Brief: Flexible bituminous pavement with 10-year design life (ATJ 5/85).
Design Change: Bound surfacing upgraded to Grade 30 jointed reinforced concrete at no cost addition.
Foundation Invariance: 50mm sand bedding and 300-350mm crusher-run roadbase remain 100% identical.
Operational Value: Total resistance to fuel spills, oil softening, rutting, and heavy low-loader shearing.

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100 mm G30

Road Type A (Internal)

125 mm G30

Road Type C (Heavy Spine)

2x BRC A7

Reinforcement Profile

300-350 mm CR

Foundation Subbase

Category T1

Traffic Classification

10 Years

Design Life

Primary Standard: JKR Arahan Teknik (Jalan) 5/85 (Pindaan 2013) for traffic spectra and catalogue baselines.
Concrete Guideline: REAM GL 7/2004 (Guidelines to Design of Plain Concrete Pavements).
Structural Method: Odemark Equivalent Thickness transformation referred to SG2 subgrade (E_sg = 120 MPa).
Governing Hypothesis: Evaluation uses fully cracked lower bound (E = 3,000 MPa) ensuring conservative adequacy.

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Context Correction: 28,342 veh/day on previous sheets was a Sibu-Bintulu 24h trunk road count.
Logical Internal Spectrum: Derived from regiment personnel, ration logistics, and vehicle movements.
Type A Cumulative ESAL: 0.06 x 10^6 ESAL over 10 years (robustly within Category T1 <= 1.0M).
Type C Cumulative ESAL: 0.24 x 10^6 ESAL over 10 years (including controlled 42 MT low-loader movements).

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Type A Section (100mm G30): Equivalent thickness = 688 mm (cracked) vs 515 mm required -> Ratio = 1.34.
Type C Section (125mm G30): Equivalent thickness = 819 mm (cracked) vs 515 mm required -> Ratio = 1.59.
Uncracked Capacity: Type A reaches 920 mm (Cat T4); Type C reaches 1,109 mm (> Cat T4 envelope).
Reverse Capacity Margin: Foundation sustains 27x to 33x the imposed 10-year design traffic demand.

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Steel Specification: 2 layers BRC A7 welded wire fabric (MS 144 / JKR/SPJ/2008), 284 mm2/m total.
Reinforcement Ratio: rho = 0.28% (Type A) and 0.23% (Type C), well above 0.15% minimum.
Structural Function: Provides strict crack-width control, holds micro-cracks tight, and preserves aggregate interlock.
Joint Detail Isolation: Contraction and construction joint details documented on PEPC drawing (Deliverable R-1).

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R-1: PEPC-endorsed joint, dowel bar, tie bar and cover detail drawings.
R-2: 28-day concrete cube test records and in-situ subgrade CBR formation records.
R-3: Implementation of Cantonment Traffic Guide and 42 MT low-loader logbook.
R-4: Annual walk-through visual condition surveys for joint sealants and drainage outfalls.
R-5: Assembly of complete construction verification package (QA/QC records, supervision diary).

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