Benefits of FRP Grating
- Lightweight Materials
- Reduced Installation Costs
- Low maintenance Life Cycles
- Ease of Fabrication
- Enhanced Workplace Environment
Features of Grating
- Corrosion Resistant
- Slip resistant top surface
- Fire Retardant
- Varietry of Standard colors
- Impact Resistant
- UV Inhibitors
Type of Grating Surfaces
- Concave surface: Anti-Skid surface.
- Grit surface: Extra slip-resistance as per BS 7976-2.
Standard Resin Systems Available
|
Resin Type
|
Resin Base
|
Description
|
Corrosion
Resistance |
Flame Spread Rating
ASTM E-84 |
Max Oper.
Temp. |
|
VFR
|
Vinyl
Easter |
Superior Corrosion Resistance
and Fire Retardant |
Excellent
|
Class 1,25 or less
|
110oC/230oF
|
|
IFR
|
Isopbtbalic
Polyester |
Industrial Grade Corrosion Resistance
and Fire Retardant |
Very Good
|
Class 1,25 or less
|
90oC/190oF
|
Molded Grating Specifications
|
Type
|
Thickness
|
Mesh Size
|
Open Area
|
Weight/
Sq. Ft |
Available Panel Size
|
|
Square
|
1/2''
|
11/2"x1/2"
|
69%
|
1.5
|
4' x 8' , 4' x 12'
|
|
Square
|
1/2''
|
2" x 2"
|
76%
|
1.3
|
4' x 8' , 4' x 12'
|
|
Square
|
1"
|
11/2"x1/2"
|
69%
|
2.6
|
4' x 8' , 4' x 12'
|
|
Square
|
11/4"
|
11/2"x1/2"
|
69%
|
3.2
|
4' x 8' , 4' x 12'
|
|
Square
|
11/2"
|
11/2"x1/2"
|
69%
|
4.0
|
4' x 8' , 4' x 12'
|
|
Square
|
2"
|
2" x 2"
|
72%
|
4.5
|
4' x 8' , 4' x 12'
|
Note:
|
|||||
Molded Grating Load and Deflection Data
The designer should not exceed MAXIMUM-RECOMMENDED load at any time. MAXIMUM LOAD represents a 3:1 factor of safety on ULTIMATE CAPACITY. ULTIMATE CAPACITY represents MAX LOAD observed at initial fracture.
Walking loads for maintenance traffic are typically a live load of 60 PSF. Deflections for worker comfort aretypically limited to 3/8 " or SPAN divided by 120 under full live load. For a firmer feel under full live load or a line load 250 lbs/ft of width, limit deflections to 1/4 " or SPAN divided by 200.
The loads represented are for STATIC LOAD CONDDITIONS at ambient temperature. Deflections for impact loads or dynamic loads will MULTIPLY the deflections shown by 2. Long term loads will result in added deflection due to creep in the material and will require higher factors of safety to ensure acceptable performance.
0.5" Thick 1.5" x 1.5" Square Mesh
72% Open Area
1.34 lbs.ft2
|
Span
(inch) |
CONCENTRATED LOAD
in lbs/ft of width |
Max Load
|
|||||||
|
50
|
100
|
150
|
200
|
300
|
500
|
1000
|
2000
|
||
|
12
|
0.04
|
0.08
|
0.13
|
0.17
|
0.25
|
0.42
|
280
|
||
|
18
|
0.13
|
0.26
|
0.38
|
0.52
|
0.73
|
180
|
|||
|
24
|
0.29
|
0.58
|
140
|
||||||
|
Span
(inch) |
UNIFORM LOAD
in lbs/ft of width |
Max Load
|
|||||||
|
50
|
100
|
150
|
200
|
300
|
500
|
1000
|
2000
|
||
|
12
|
0.03
|
0.05
|
0.08
|
0.11
|
0.17
|
0.29
|
0.53
|
350
|
|
|
18
|
0.12
|
0.24
|
0.36
|
0.48
|
150
|
||||
|
24
|
0.37
|
80
|
|||||||
0.5" Thick 2.0" x 2.0" Square Mesh
78% Open Area
1.03 lbs.ft2
|
Span
(inch) |
CONCENTRATED LOAD
in lbs/ft of width |
Max Load
|
|||||||
|
50
|
100
|
150
|
200
|
300
|
500
|
1000
|
2000
|
||
|
12
|
0.05
|
0.11
|
0.15
|
0.20
|
0.27
|
0.51
|
230
|
||
|
18
|
0.15
|
0.32
|
0.45
|
0.64
|
150
|
||||
|
24
|
0.39
|
0.68
|
110
|
||||||
|
Span
(inch) |
UNIFORM LOAD
in lbs/ft of width |
Max Load
|
|||||||
|
50
|
100
|
150
|
200
|
300
|
500
|
1000
|
2000
|
||
|
12
|
0.03
|
0.06
|
0.10
|
0.13
|
0.18
|
0.35
|
0.63
|
300
|
|
|
18
|
0.14
|
0.28
|
0.45
|
0.58
|
130
|
||||
|
24
|
0.41
|
70
|
|||||||
1.0" Thick 1.5" x 1.5" Square Mesh
69% Open Area
2.5 lbs.lf2
|
Span
(inch) |
CONCENTRATED LOAD
in lbs/ft of width |
Max Load
|
|||||||
|
50
|
100
|
150
|
200
|
300
|
500
|
1000
|
2000
|
||
|
12
|
0.01
|
0.02
|
0.03
|
0.04
|
0.06
|
0.13
|
0.23
|
1140
|
|
|
18
|
0.02
|
0.04
|
0.05
|
0.07
|
0.10
|
0.18
|
0.36
|
930
|
|
|
24
|
0.04
|
0.08
|
0.12
|
0.16
|
0.22
|
0.41
|
660
|
||
|
30
|
0.08
|
0.15
|
0.24
|
0.33
|
0.41
|
530
|
|||
|
36
|
0.14
|
0.26
|
0.38
|
0.52
|
0.69
|
350
|
|||
|
Span
(inch) |
UNIFORM LOAD
in lbs/ft of width |
Max Load
|
|||||||
|
50
|
100
|
150
|
200
|
300
|
500
|
1000
|
2000
|
||
|
12
|
0.01
|
0.01
|
0.02
|
0.03
|
0.04
|
0.07
|
0.14
|
2300
|
|
|
18
|
0.02
|
0.03
|
0.05
|
0.07
|
0.09
|
0.17
|
0.33
|
0.66
|
1200
|
|
24
|
0.05
|
0.10
|
0.15
|
0.21
|
0.29
|
0.51
|
660
|
||
|
30
|
0.12
|
0.24
|
0.36
|
0.47
|
0.63
|
420
|
|||
|
36
|
0.24
|
0.48
|
210
|
||||||
1.5" Thick 1.5" x 1.5" Square Mesh
68% Open Area
3.95 lbs.ft2
|
Span
(inch) |
CONCENTRATED LOAD
in lbs/ft of width |
Max Load
|
|||||||
|
50
|
100
|
150
|
200
|
300
|
500
|
1000
|
2000
|
||
|
12
|
0.01
|
0.02
|
0.03
|
0.04
|
0.09
|
2010
|
|||
|
18
|
0.01
|
0.02
|
0.03
|
0.04
|
0.06
|
0.11
|
0.22
|
1310
|
|
|
24
|
0.01
|
0.02
|
0.04
|
0.05
|
0.06
|
0.12
|
0.23
|
0.46
|
1010
|
|
30
|
0.02
|
0.04
|
0.06
|
0.09
|
0.17
|
0.24
|
0.48
|
810
|
|
|
36
|
0.04
|
0.07
|
0.11
|
0.14
|
0.18
|
0.36
|
640
|
||
|
42
|
0.06
|
0.13
|
0.19
|
0.25
|
0.28
|
0.56
|
530
|
||
|
48
|
0.08
|
0.17
|
0.25
|
0.34
|
0.48
|
490
|
|||
|
54
|
0.12
|
0.28
|
0.37
|
0.48
|
0.59
|
||||