Frequently Asked Questions

Singapore Office

Government Processing Fees

URA plan fees

BCA plan fees :

  • New area: $400/100m2 for basement.
  • New area: $300/100m2 for above ground.
  • A&A works: $200/storey for residential buildings + new area (if any).
  • A&A works: $400/storey for non-residential buildings + new area (if any).

SCDF plan fees :

  • New area: $160/100m2
  • A&A: $90/storey + new area (if any).
  • Change of use: $90/storey

LTA plan (vehicle carpark) fees:

  • $10/100m2, subject to minimum $120.

Nparks (external works): see attachment

Plot ratio & street block plan:  Plot ratio and street block plan are unique for each site location.  Please refer on URA’s master plan link.

Design Formulas

ECM design formula for estimating volume of holding pond

V = Cr x I x Site Area

Cr = Coefficient of run off = 0.65

I = Rainfall intensity = 80 mm/hr for 1 in 5 years storem for duration 1 hours

Site area = Area exposed to rain

Treatment plant capacity per hour (m3/hr) = V / 10

Drain capacity = Manning formula Qc = 1/n x AR 2/3S ½ where

Qc = discharge capacity of drain (m3/s)

N = roughness coefficient (n = 0.015 for concrete drain, UPVC = 0.0125)

A = Flow area (m2)

P = wetter perimeter

R = A/P

S = bed gradient

Allowable Total suspended solid = 50 ppm or 50mg/lit

ECM CALCULATION – Example
Calculation of soil loss/sediment yield
T (Sediment yield) = (u) (VQp)0.56 (K)(LS)(CP) based on MUSLE equation
u = 89.6 conversion to SI unit
Site Area  = 4000 m2
I (rainfall intensity) = 80 mm/hr 0.08 m/hr 1 in 5 year return period
Storm Duration = 60 min 1 hr
V (runoff volume ) for 1Hr = 1/360*I*Area*C*3600 where C = 0.65
= 208 m3
Qp (Peak flow) = V(runoff volume) = 0.058 m3/s
Duration
K = 0.04 soil erodibility factor based on US soil erodibility Nomograph
%silt and very fine sand = 50%
%sand = 20 %
%organic matter = 0%
Soil structure = 2 very fine granular
Permeability = 5 (slow)
LS = 0.1 (flat ground)
CP = 1 (without silt control)
T(Sediment yield) = 1.44 tons per storm event
Suspendend solid=T/V 6934 mg/lit more than allowable 50 mg/l therefore need ECM control

RC structures rebar estimate

Slab = 80-110 kg/m3

RC pad floorings = 70-90 kg/m3

Transfer slab = 150 kg/m3

Pile cap/raft = 115 kg/m3

Columns = 150-450 kg/m3

Ground beams = 230 kg/m3

Beams = 220 kg/m3

Retaining walls = 110 kg/m3

Stairs = 135 kg/m3

Walls = 65 kg/m3

Heavy industrial = 125 kg/m3

Commercial = 95 kg/m3

Institutional = 85 kg/m3

Structural steel quantity

Metal roof structural roof = 30 kg/m2

ERSS/GBW requirement

  1. Excavation of 1.5m or less depth = insignificant building works. No need submission
  2. Excavation 1.5-4m depth = need submission to BCA. Need QP structure
  3. Excavation 4-6m depth = need submission to BCA. Need QP structure and AC structure
  4. Excavation> 6m = need submission to BCA. Need QP structure, QP Geo , AC struct and AC Geo

Notes: Excavation area not more than 10m2 or less and not more than 2m excavation depth = insignificant building works. No need submission to BCA

For works involving sewer pipe and other utility pipes

Pipe internal diameter less than 1m = No need submission to BCA, No need ERSS submission except for ERSS located within construction site with other building works

Pipe internal diameter 1-2m = Need submission to BCA.  Need QP structure and AC structure, ERSS requirement: Need ERSS submission, QP structure required for excavation 4m or less , QP structure and AC structure required for > 4-6m excavation

Pipe internal diameter > 2m = Need submission to BCA , Need QP structure, AC struct  for cut and cover, and need additional QP geo and AC geo for pipe jacking or tunneling.

Singapore

PEC Civil Consultant Pte Ltd

One Pemimpin
1 Pemimpin Drive #05-12,
Singapore 576151

Phone +65 6337 8212
Fax +65 6694 5926

Malaysia

PEC Civil Consultant Sdn Bhd

29 Jalan Molek 1/8 Taman Molek,
81100 Johor Bahru,
Johor, Malaysia
Company Registration No: 1114820M