Cast Iron Double Triangular Manhole Cover & Frame Specification

Cast Iron Double Triangular Manhole Cover & Frame Drawing

Cast Iron Double Triangular Manhole Cover & Frame for Foul Water, DS1033B

Cast Iron Double Triangular Manhole Cover & Frame for Storm Water, DS1033B

Cast Iron Double Triangular Manhole Cover and Frame

Features       : Inverted vee seatings combine with three point suspension to
                       provide cover stability under load and to discourage abrasive
                       material from becoming trapped under the bearing points.

Functions     : Designated to be used in Government roadway drainage projects
                       and maintenance projects.

Applications : For Storm Water (with circumscribed raised stubs on the cover)
                       For Foul Water (with rectangular raised stubs on the cover)


Test details of cast iron manhole covers and frames

Type of manhole cover and  frame	Grade	Test requirements
		Diameter of test block(mm)			Test load (t)
Double triangular manhole cover and frame	Medium duty	100			5
Double triangular manhole cover	Heavy duty	300			30
Frame	Heavy duty	300			30

Drainage Services Department DS Series Standard Drawings
     for DS1033B, DS1034B

Water Supplies Department WSD Series Standard Drawings
     for WSD7.29