autodesk revit mep for mechanical design

... before the decimal point for values less than one inch Some designers routinely place zeros before the decimal point for values less than one inch This practice is incorrect and confusing for ... opportunity for uniform interpretation and cost-effective assembly GD&T was created to insure the proper assembly of mating parts, to improve quality, and to reduce cost GD&T is a design tool Before designers ... controls in the same category For example, datums are not appropriate for any of the form controls Notice that form controls pertain only to individual features In other words, form controls are not...

Ngày tải lên: 23/01/2014, 04:20

... Autodesk Revit MEP, and has many years of experience with leading MEP design for a wide range of projects He has also worked with several major HVAC equipment manufacturers to develop their Revit ... •  Mechanical Systems and Ductwork 247 Chapter 11  •  Mechanical Piping 271 Part 3  •  Revit MEP for Electrical Design ... 199 Part 2  •  Revit MEP for Mechanical Design 201 Chapter 8  •  HVAC Cooling and Heating Load Analysis 203 Modeling Spaces for Building Load...

Ngày tải lên: 31/05/2014, 00:45

... of another version of Revit This is Autodesk Revit and it combines all the features of Autodesk Revit Architecture, Autodesk Revit Structure, and Autodesk Revit MEP This version is available ... chapter Part 2: Autodesk Revit MEP for Mechanical Design Chapter 8: HVAC Cooling and Heating Load Analysis Mechanical design must irst start with understanding how your building will perform in different ... 10 • Mechanical Systems and Ductwork 293 Chapter 11 • Mechanical Piping 323 Part • Autodesk Revit MEP for Electrical Design...

Ngày tải lên: 12/06/2014, 10:02

... MHBD031-Cogorno-v5.cls April 18, 2006 15:58 Source: Geometric Dimensioning and Tolerancing for Mechanical Design Chapter Position, General Position is a composite tolerance that controls both the ... tolerance, and at least one datum The numerical tolerance for the surface being controlled is specified as a linear dimension because it generates a uniform-shaped tolerance zone A plus or minus angularity ... the limits of size and may not exceed the boundary of perfect form at MMC, Rule #1 There is no boundary of perfect orientation at MMC for angularity The 90◦ angles on the part also have a tolerance...

Ngày tải lên: 05/08/2014, 09:20

... size and its MMC Bonus tolerance for a particular feature is added directly to the geometric tolerance to equal the total tolerance for that feature Shift tolerance for a single feature of size, ... the form requirement of a size feature at LMC is opposite the form requirement at MMC When a tolerance is specified with an LMC modifier, the feature may not exceed the boundary of perfect form ... 3.500 C 1.500 2.500 1.500 3.000 B A 4X Ø 510 -.525 Figure 7-15 Design a gage to inspect for shift tolerance: Problem 1 On a gage designed to control the four-hole pattern in Fig 7-15, what size...

Ngày tải lên: 05/08/2014, 09:20

... than floating fasteners The formula for fixed fasteners is: t1 + t2 = H − F or H = F + t1 + t2 Where t1 is the tolerance for the threaded hole at MMC, t2 is the tolerance for the clearance hole at ... 013 014 Summary The floating fastener formula is: T = H − F or H = F + T The fixed fastener formula is: t1 + t2 = H − F or H = F + t1 + t2 The LMC clearance hole formula is: H @ LMC = (F + F head)/2 ... and F is the fastener diameter at MMC This formula is sometimes expressed in terms of 2T instead of t1 + t2 ; however, 2T implies that the tolerances for the threaded and the clearance holes are...

Ngày tải lên: 05/08/2014, 09:20

... MHBD031-Cogorno-v6.cls April 11, 2006 22:49 Source: Geometric Dimensioning and Tolerancing for Mechanical Design Chapter Position, Coaxiality One of the most common drawing errors is the failure ... sizes for 3/8 (Ø 375) hex head bolts n]w.025m]A]B]C] n]w.015m]A]B]C] n]w.000m]A]B]C] If the clearance holes in problem actually measure Ø 440, calculate the total positional tolerance for each ... in Fig 8-31 for four Ø 250 socket head cap screws The counterbores are Ø 422 ± 010, the depth is 395 ± 010, and the geometric tolerance is 010 at MMC 17 If the geometric tolerance for just the...

Ngày tải lên: 05/08/2014, 09:20

... Concentricity is appropriately used for large, expensive parts that must have a small coaxial tolerance for balance but need not have the same small tolerance for form and surface imperfections Concentricity ... and form Differential measurement excludes size, shape, and form while controlling the median points of the feature The concentricity tolerance is often used to accurately control balance for ... MHBD031-Cogorno-v6.cls April 10, 2006 20:56 Source: Geometric Dimensioning and Tolerancing for Mechanical Design Chapter 11 Runout Runout is a surface control It controls surfaces constructed around...

Ngày tải lên: 05/08/2014, 09:20