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H3152, H3153 Compound Material Double Triangular Gully Grating & Frame Specification
H3152, H3153 Compound Material Double Triangular Gully Grating & Frame Drawing
H3152, H3153 Compound Material Double Triangular Gully Grating & Frame (adjacent to kerb)
Compound Material Triangular Gully Grating & Frame

Features   : Vee shaped seatings provide cover stability under load.
                   High acid resistance.

Functions : To be used with Kerb Overflow Weirs to collect roadside ground 
                   water into underground drainage system.

Types       : 1) Adjacent to Kerb (Can be used with kerb overflow weirs)
                   2) Away from Kerb 



Test Details of Double Triangular Gully Grating & Frame
Load Test
Type of gully grating and  frame GA1-450
 		  Grade  Test requirements
 Diameter of block (mm)  Test load (t)
Grating Heavy duty  300  20
Frame, adjacent to kerb
C-DTG-432-517-J		 Heavy duty  300  20
Frame, away from kerb
C-DTG-432-517-Y		 Heavy duty  300  20
Acid resistance test 
Type of gully grating and  frame
GA1-450 		 Test requirements
Double triangular gully grating & frame
 adjacent to kerb, C-DTG-432-517-J		 Immerse in a sulphuric acid solution
(H2SO4) of 20% concentration for
48 hours,
no obvious corrosion on surface
of the sample and loss in mass<1%
Double triangular gully grating & frame
 away from kerb, C-DTG-432-517-Y



Highways Department H Series Standard Drawings
      for H3152, H3153


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