fans, silencers, flexible duct, grilles, defusers and more, all to assist in the installation of the air handling system. Oval Duct. Surface Area of Ducts. Duct + 1 Layer Gypsum Board Weight (lb/ft) Bare Duct + 2 Layers Gypsum Board Weight (lb/ft) Bare Duct + 3 Layers Gypsum Board Weight (lb/ft) 28 28 5.4 42.4 60.6 78.8 30 30 6.3 45.4 64.9 84.5 42 42 12.3 63.6 90.9 118.3 54 54 20.3 81.7 116.9 152.0 60 60 25.0 90.8 129.9 168.9 84 84 49.0 127.1 181.8 236.5 96 96 64.0 145.3 207.8 270.3 40 20 5.6 45.4 64.9 84.5 54 28 10.5 62.1 88.7 115.4 Gauge Decimal Lbs. Toll free (877) CDS–DUCT 237-3828 Spiral Duct Specifications . Refer to Uangyih-tech Flanges System section for adapters, drains and test port aw end available. per Sq. All weights listed below are based on our standard Duct Balloon® thickness which is 3’0” (915mm). The chart below is based on our lightest weight material which is ballistic nylon. Related Topics . Gauge and weight chart for sheet steel, galvanized steel, stainless steel, aluminum and strip … Notes: 1. * ( duct cross section area A=2*(L+W DUCT material volume V = A*lenght of duct M= D * V. M :duct weight kg kg/m3 D:galvanaized steel densty you get D from … Rectangular duct weight chart in Description. narrowscope duct construction: table 1-5 e4: a.13 2″ w.g. Gauge (ga) Standard Steel Galvanized Steel Stainless Steel Aluminum, Brass, Copper … Then click on calculate. Flex duct = .05" on most metal duct calculator Round metal pipe = .06" on most metal duct calculators. This enables the users to produce more accurate design. 2. Duct greater than 2100 diameter requires Uangyih-tech Engineering review and approval. Dust Control during Precipitator Cleaning, Repair Instructions for High Temp Fabrics, MSDS for Silicone Coated Fiberglass Fabric. * Nominal spiral ducts system weights are based upon the following: 1. spiral duct weight chart galvanized spiral duct weight chart – (pounds per foot) nominal thickness .0187 .0217 .0276 .0336 .0396 .0516 dia. Sizes of circular ventilation air ducts. Title: Duct System Sizes and Airflow Quick Chart Created Date: 8/21/2006 11:56:03 AM Stainless Steel Seamless Duct Stainless Steel Seamless. Message 4 of 4 Luke_Evans. Custom thickness are also available if required. 22031/2 x30235040x10290040x12. FitnessPlus is an easy-to-use program that will enable you to trace your diet program in terms of your food and exercises performed. Abrasion resistant nylon and high temperature materials rated to 500ºF (260ºC) weigh about twice these values. Table includes 25% allowance for bracing, hangers, reinforcing, joints and seams. Building Tips Wright Flyer s Model Airplane Club. spiral duct weight chart galvanized spiral duct weight chart – (pounds per foot) nominal thickness .0187 .0217 .0276 .0336 .0396 .0516 dia. Psychrometric Chart + Duct Calculator is a precise and powerful tool designed for HVAC&R engineers. But since rectangular and round ducts don't use the same sizing parameters, I have added all of them in for visibility. 80% of duct surface area is spiral pipe versus 20% of duct surface area to be fittings 2. fittings are one even gauge heavier than the spiral pipe Single Wall Spiral Duct --- Weights & Area This helps the designers to calculate the Duct weight. Table A3.1-7; SMACNA1 – Maximum Weight for Rectangular Duct Duct Width (in) Duct Height (in) Duct Area (ft2) Duct Weight (lb/ft) 30 30 6.3 17 42 42 12.3 29 54 54 20.3 46 60 60 25.0 54 84 84 49.0 103 96 96 64.0 129 54 28 10.5 34 60 30 12.5 39 84 42 24.5 74 96 48 32.0 97 108 54 40.5 110 120 60 50.0 121 HVAC Duct Friction Equations. Static regain: Very large installations (concert halls, airports and industrial)We’re going to focus on the equal friction method in this example as it’s the most common method used for commercial HVAC systems and its fairly simple to follow. metric conversion chart a.6 duct surface area in square feet per lineal foot a.7 galvanized sheet weight a.8 approximate weight-round duct in pounds per lineal foot a.10 area and circumference of circles a.11 angle, bar & channel properties a.12 2″ w.g. Therefore the pressure loss is 0.2149 Provided here is the rectangular duct sizes chart for your personal reference and this chart / table shows the duct size (cfm) and their equivalent diameter in inches. SP duct. I'm updating our take-off schedule for duct weight calculation but have run into a series of snags (I think they are all related). Abrasion resistant nylon and high temperature materials rated to 500ºF (260ºC) weigh about twice these values. HVAC Coil Calculation . 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