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Construction Products Direct

Manhole Shutter -900mm

Manhole Shutter -900mm

Regular price £106.00 GBP
Regular price Sale price £106.00 GBP
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Diameter

Manhole shutters are made for the purpose of concrete manhole rings.  They are used temporarily to form a circular framework when casting a concrete manhole ring.

 

Manhole shutters come in a variety of heights ranging from 900mm to 2400mm.  The utilization chart below shows the sizes and weights that are required.

Please be aware that this item is made to order.

 

Utilization Chart for 900 and 1800 high.

 

Normal Int. Dia. of Manhole (mm)

Manhole wall thickness (mm)

Number of section of shutter required to form Manhole

A

 

 

 

 

 

B

 

 

 

 

 

C

External Dia. of concrete (mm)

Theoretical thickness of conc. Surround (mm)

Vol. of concrete required (m3)

 

900

 

 

 

 

1800

675

65

2

1

-

1171

183

0.51

1.02

900

75

2

2

-

1368

159

0.54

1.09

1050

85

3

-

1

1541

160

0.63

1.25

1200

100

3

1

1

1738

169

0.75

1.50

 

1350

 

 

112

3

3

2

2

-

1

1855

1935

141

181

068

0.90

1.36

1.80

 

1500

 

 

115

4

4

-

-

 

1

2

2028

2107

150

189

0.79

1.02

1.58

2.05

1800

115

4

2

-

2342

156

0.96

1.93

 

2100

 

 

120

5

5

1

1

-

1

2632

2712

 

146

186

1.03

1.33

2.05

2.66

2400

135

6

-

1

3002

166

1.33

2.66

 

2700

 

 

162

 

6

6

2

2

 

-

1

 

3316

3396

146

186

1.31

1.69

2.62

3.38

 

Specifications

Panel Height (mm)

 

Panel Reference

Panel Width (mm)

Panel Weight (kg)

1800

A

1530

66

1800

B

620

36

1800

C

250

27

 

Usage

  • Protective gloves should be used at all times when handling the manhole shutters.
  • The manhole shutters are flexible and so therefore need to be stacked appropriately.
  • Each manhole shutter comes with 2 lifting lugs.
  • Once assembled panels should be lifted by the use of chains only.
  • Panels should not be stacked one on top of the other to gain height.

Assembly

  • All panels should be free from concrete and come with 4No. pins and wedges attached, per panel
  • Each shutter should be made using the correct number of panels, refer to utilisation chart
  • A pin should be inserted through each hole, then after inserting the wedge into each pin slot.
  • Ensure all pins/wedges are in place
  • To secure the position of the pins/wedges, tap the wedge with a hammer.

 

NB: For sizes of 2400mm and larger, it is recommended that supports are provided for the joints.  This can be done by propping, or banding the assembly with straps.

Care should also be taken with the rate of pour as high rates considerably increase the loads on the pins and wedges. 

Dimensions are based on rings made to BS 5911, and the number of sections give a minimum cover of 150mm. 

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