QB1910553 - STG 1 19 Ind Units - Lot 13 (#64) - QB1910553 - MISC - Form 11 Final & Supporting Certificates - 26.11.2021 KW

 

 

 

 

 

 

 

 

 

 

 

 

 

Purpose: To ensure under-drainage is installed correctly before the bioretention media is installed,
Items Checked Satisfactory Action (if unsatisfactory) Initial
Base of system free from debris OR Yes

Liner (typically filter cloth) correctly DR Yes

installed

There is no fabric ‘sock’ around the DR Yes

under-drainage

Correct under-drainage has been DR Yes

supplied and slotted at 2mm or smaller,

Under-drainage pipes are laid at the DR Yes

correct spacing (small bioretention

 

 

system 1.5 m, large system 2 m)

Required grade (verified using level or
string line)

Under-drainage pipes laid at required | DR - with smart level Yes
Brade (verified using level or string line
to achieve design level #25 mm and
0.5% grade)

All junctions and connections have DR Yes
been appropriately sealed

 

 

 

Top of clean out points at design level | DR Yes
(Le. approximately 50-150 mm above
filter media surface )

 

 

 

 

 

   
  

 

Comments (attach and refer to additional pages if necessary)

 

 

 

L_

NB: As constructed survey and drawings and photos attached.

Signed by superintendent: bo

Print name: _ Doug Reynolds
Date: 06/10/2021

AND

Signed by bioretention designer:
ee

Print name:

 

Date:

   
 

elt Reem toll it iw CT TeT

CONSTRUCTION AND ESTABLISHMENT SIGN-OFF FORMS — BIORETENTION SYSTEMS 5

© South East Queensland Healthy Waterways Partnership 2016