Straight Sections

Fiberglass Straight Section Numbering Example:
06 - 7615 - 0010 - 36
Bottom Type
06 - 6" Rung Spacing
09 - 9" Rung Spacing
12 - 12" Rung Spacing
SB - Solid Bottom 		Tray System Number
This identifies the specific tray design and is used as a catalog number prefix for straight sections and fittings. 		Length
0010 - 10'- 0"
0020 - 20'- 0" 		Width
06 - 6"
09 - 9"
12 - 12"
18 - 18"
24 - 24"
30 - 30"
36 - 36"
RAIL
HEIGHT		 LOAD
DEPTH		 RAIL
FLANGE		 NEMA
CLASS		 CSA
CLASS		 FLANGE
DIRECTION		 LADDER SOLID
BOTTOM		 SAFE LOAD DATA (LBS./FT.)
SUPPORT SPAN (FT.) / DEFLECTION (IN.)
6 8 10 12 14 16 18 20
4" 2 7/8" 1 1/4" 12B C 7400 7D20 196 0.38 164 0.85 138 1.61 80 2.08 56 2.57 41 3.04
7401 7D21 145 0.33 120 0.60 123 1.45 76 2.00 50 2.58 36 3.12
6" 4 7/8" 2" 12C, 16A D, 3M 7615 7F20 174 0.53 159 0.88 128 1.24 105 1.59 82 1.95 50 2.45
7616 7F21 173 0.38 149 0.61 124 0.93 100 1.36 75 1.79 55 2.06
4 3/4" 1 5/8" 20C E, 6M 7625 7F24 278 1.25 246 2.03 215 2.79 183 3.56 152 4.31 120 5.09
RESISTANCE TO VARIOUS CHEMICAL AGENTS
CHEMICAL AGENT CONC. TEMP C° TEMP F°
Acetic Acid 5% 65 149
Aluminum Sulphate 95 203
Ammonium Nitrate 100% 95 203
Beer 20 68
Benzene 20 68
Calcium Chloride 95 203
Chlorine Gas/Water 20 68
Chromic Acid 5% 95 203
Copper Sulphate 95 203
Ethylene Chlorohydrin 65 149
Ethylene Glycol 95 203
Ferrous Sulphate 95 203
Fatty Acids 100% 95 203
Hydrochloric Acid 1% 95 203
Hydrochloric Acid 10% 65 149
Hydrochloric Acid 37% 25 77
Kerosene 95 203
Magnesium Chloride 95 203
Napthaline 95 203
RESISTANCE TO VARIOUS CHEMICAL AGENTS
CHEMICAL AGENT CONC. TEMP C° TEMP F°
Nitric Acid 30% 20 68
Phosphoric Acid 10% 95 203
Phosphoric Acid 85% 65 149
Salt Water 65 149
Sodium Bicarbonate 65 149
Sodium Bisulphate 25 77
Sodium Carbonate 25 77
Sodium Chloride 95 203
Sodium Hypochlorite 5% 65 149
Sodium Nitrate 100% 95 203
Sodium Silicate 25 77
Sodium Sulphate 95 203
Sulphuric Acid 1% 95 203
Sulphuric Acid 5% 65 149
Sulphuric Acid 10% 76 169
Sulphuric Acid 30% 25 77
Trisodium Phosphate 25 77
Water Sea/Tap 100% 50 122
Zinc Sulphate 65 149

MATERIAL:
Manufactured from polyester isopthalic resin conforming with ASTM E-84 Class 1. This material displays good corrosion resistance, including self extinguishing fire retardant properties that comply: UL94 VO, ASTM D-635, ASTM E-662, and FTMS 406-2023.

MECHANICAL PROPERTIES:
Tensile Strength: 20-30.6 kgf/mm2
28.4-43.5 ksi
Compression Strength: 20-30.6 kgf/mm2
28.4-43.5 ksi
Flexural Strength: 20-33.6 kfg/mm2
28.4-43.5 ksi
Shear Strength: 6.1 kgf/mm2
8.7 ksi
Density: 1.7-1.9 g/cm3
0.061-0.069lb/in3
THERMAL PROPERTIES:
Thermal Conductivity: 0.2-0.3 kcal/(mh°C)
Oxygen Index: 42%
Operating Temperature: -140 to +120°C
-220 to 248°F
TEMPERATURE Polyester resin % of strength
F° C°
75 25 100%
100 38 90%
125 50 78%
150 68 68%
175 79 60%
200 90 52%
WEATHER RESISTANCE:
Water Absorption: 24 h = 0.15%
4 days = 0.25%
Weight Increase: After 500 h = 0.7%
ELECTRICAL PROPERTIES:
Dielectric Strength: 7 - 15 kV/mm
Insulation Resistance: 1013 - 1016 ohm

MITA pultruded profiles display excellent resistance to the effects of UV and weathering.

CONNECTORS & FITTINGS:
Necessary connectors are supplied with all trays. Extra connectors for field cuts or spares must be ordered seperately. Supplied in pairs with 316 stainless steel hardware. Nylon, fiberglass and fiberglass encapsulated hardware is also available.