ASME Pressure Vessels and Water Storage Tanks - page 63

Grade Level Manways
• 63
Grade Level Manways (GLM) are
designed to AASHTO H-20
requirements. Round GLMs are
available in sizes ranging from 12" to
48" diameter. Rectangular GLMs are
available in lengths from 48" to 150"
and widths from 48" to 72".
Each manway is constructed using
A36 steel plate from 10 ga. to 1/4" thick.
Standard manways are fabricated with
a 12" skirt depth and fitted with
1.5" x 2" x 3" steel concrete anchors
seal welded to the manway skirt to
ensure a secure installation. Standard
manway lids are constructed of
3/8” reinforced checkered steel
plate. Optional 3/8” checkered plate
reinforced aluminum lids are available.
Steel components receive a brush
blast and are coated with black enamel
paint. Optional polyurethane or epoxy
coatings are available.
Rectangular manways are custom
fabricated to site-specific requirements.
Custom diameters and depths
are available upon request.
Model
Number
Skirt I.D.
Inches
Collar I.D.
Inches
Lid O.D.
Inches
Skirt
Thickness
GLM-12
12"
14.5"
14"
10ga
GLM-18
18"
20.5"
20"
7ga
GLM-24
24"
26.5"
26"
7ga
GLM-30
30"
32.5"
32"
7ga
GLM-32
32"
34.5"
34"
7ga
GLM-36
36"
38.5"
38"
7ga
GLM-42
42"
44.5"
44"
.25"
GLM-48
48"
50.5"
50"
.25"
Nominal Diameter
Round
Model
Number of Doors
Maximum
Overall Length Skirt Thickness
R-GLM-48
1
48"
.25"
R-GLM-60
2
60"
.25"
R-GLM-90
3
90"
.25"
R-GLM-120
4
120"
.25"
R-GLM-150
5
150"
.25"
Rectangular
Concrete Anchors
1.5" x 2" x 3"
Manway Skirt
3/8" Checkered Plate
Recessed “D” Ring
for Lifting as
Needed
Manway Lid
Lid Collar
Manway Skirt
Diameter
Aluminum Lid
Steel Lid
.5" x 3"
48" - 72"
Length
Round
Rectangular
.5" x 1.5"
1...,53,54,55,56,57,58,59,60,61,62 64,65,66,67,68,
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