Southern Alberta 1-S Manholes

TOP AND BOTTOM HALVES FOR PIPE
SIZES UP TO
WEIGHT
TOP BOTTOM
mm
 
kg
kg
1200 x 1200 x 2020 (48"x 48"x 80" Inside)
1500 x 1500 x 2020 (60" x 60"x 80" Inside)
1930 x 1930 x 2020 (72" x 72"x 80" Inside)
2400 x 2400 x 2400 (96" x 96"x 96" Inside)
2800 x 2800x2800 (112"x112"x112"Inside)
900 (36") ID
1050 (42") ID
1500 (60") ID
1800 (72") ID
2100 (84") ID
2650
3550
5650
11680
18140
2650
3550
5650
11680
18140
INTERMEDIATE SECTION - OPTIONAL FOR PIPE
SIZES UP TO
WEIGHT
(See Note 6)
 
kg
1200 x 1200 x 1000 (48" x 48" x 39")
1500 x 1500 x 1000 (60" x 60" x 39")
1930 x 1930 x 1000 (72" x 72" x 39")
2400 x 2400 x 1000 (96" x 96" x 39")
2400 x 2400 x 1750 (96"x96"x69")
900 (36") ID
1050 (42") ID
1500 (60") ID
1800 (72") ID
1800 (72") ID
2040
2400
3100
5700
10000
BASE SLAB - OPTIONAL FOR PIPE
SIZES UP TO
WEIGHT
(See Note 7)
 
kg
1200 x 1200 (48" x 48") Base Slab
1500 x 1500 (60" x 60") Base Slab
1930 x 1930 (72" x 72") Base Slab
2400 x 2400 (96" x 96") Base Slab
2800 x 2800 (112" x 112") Base Slab
900 (36") ID
1050 (42") ID
1500 (60") ID
1800 (72") ID
2100 (84") ID
1620
2330
3580
5890
7650

Notes:

1) 1-S manholes are NOT prebenched.

2) Non standard hole sizes and angle entry holes available.

3) Lifting clutches available.

4) Standard depth of cover is 5 m. 10% extra for deeper cover.

5) Use intermediate sections between top and bottom sections of 1-S manhole to meet drop manhole invert requirements.

6) Where design invert to rim is less than the minimum shown, the City of Calgary requires a complete top and bottom be used, in which case it must be lowered and field benched to invert. Elsewhere, a top half 1-S plus a base slab may be used, subject to Contractor obtaining project engineer's approval.

7) 1-S skimming manholes available in all sizes at same price.

Plan & Profile

DIMENSIONS
LOCATION 1.2 x 1.2 1.5 x 1.5 1.8 x 1.8 2.4 x 2.4 2.8 x 2.8
  mm mm mm mm mm
A
B
C
D
E (at centre)
F (at centre)
G
Min. Inv. To Rim
(See Note 7)
175
1010
1010
200
150
1200
1500
2900
175
1010
1010
200
150
1500
1800
2900
200
1010
1010
200
150
1930
2230
2900
250
1200
1200
250
230
2400
2860
3300
250
1400
1400
250
230
2800
3260
3700