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Mar 7, 2008. 2. US. Hello, Had been taught years ago not to put a space between the thread size, and class: 1/4-20UNC, but have lately been having some drawings criticized for not putting the space: 1/4-20 UNC. Which is the ansi standard, and are both acceptable? Replies continue below.
I am tired of trying to figure it out by myself and any help is greatly appreciated. Our Standard Callout is: (Note #XX has to be manually updated each time a new hole gets added or existing holes get changed.) 2X DRILL #XX (Ø.201) THRU. TAP 1/4-20 UNC- 2B THRU. DRILL #XX (<MOD-DIAM><hw-tapdrldia>) <hw-thru>.
T=kPD where T=applied torque, k=the empirical "nut factor", P=the axial force developed, and D=the nominal diameter (e.g. .164 for No.8-32 UNC). A very broad rule of thumb for unlibricated, plated steel or CRES fastners is that k=.15. If you have a routine need to do this kind of calculation you may want to get TORKSENSE for about $120 per seat.
The required usable thread depth + the length of partial thread on the tap (depends on type of tap and possible manufacturer) + the length of drill point (depends on diameter and angle) + a thread or two for "safety". Best to make your own chart based on your answers to the variables above. 0. Jul 10, 2007. 1.
US. Is there a code section (IBC Chapter 21, ACI 530) that specifically gives height to thickness ratios. I have a contractor that changed from 6" cmu to 8" cmu without consulting anyone because the owner raised the wall height from approximately 11' tall walls to 13' tall walls. The reason he gave for switching from 6" to 8" is simply that the ...
Jul 9, 2016. 12. US. I am trying to come up with a clever way to connect (2) C15X33.9 so that there is at least a 3" gap for insulation. The reason for this is that one channel is exposed and only for aesthetics while the inside channel is structural. The 3" gap is supposed to create a thermal break as required by the energy code.
Mechanical. Oct 1, 2003. 1,283. The ANSI standard Z358 4.1.2 for emergency fixtures requires 20 gpm for 15 minutes which would require a total of 300 gallons of the tempered water. Depending on what plumbing code you use, tempered water is defined as a certain temperature range. In the IPC, it is 85F to 110F.
It is also likely that 3" sch40 A53 pipe is cheaper than 3.5" x 1/4" round HSS. The 3.5" OD was chosen for two reasons: 1) to permit the use of pipe, because of the matched dimension and 2) to fit within the dimensions of a 2x4 stud wall. Note that 3.5" NPS pipe exists- on a table- but I've never seen a piece in real life.
The plumbing code (ie IPC) limits the velocity of piping with a maximum velocity. We always ask for it on shop drawings/calculations in additon to sprinkler calcs. The IPC has maximum velocities: all piping 1/2 inch or smaller = 5 feet/sec. copper, 5/8" - 1-1/4" = 5 feet/sec. CPVC, 5/8" - 1" = 8 feet/sec.
Run Part cleanup. Save. if this works well, try load "upper half" of the assembly navigator, run part cleanup again, Save. If this doesn't work, load "lower half" of assembly navigator, part cleanup save. then load upper 1/4 etc etc to try find the critical file. Try loading this file separately and run part cleanup.