What is the difference between requirements and design specifications ...
Sep 25, 2020 · And, a design specification per the question (rather than a process or build spec as you alluded to) is often a document including various requirements and some ideal “want to have details” …
Where did the NDS screw pullout strength equation come from?
Jul 7, 2025 · The American Wood Council National Design Specification for Wood Construction states that the withdrawal strength of a wood screw into side grain is given by the mysterious equation: …
civil engineering - What is the difference between "Crushed Stone" and ...
When these terms are listed such as in a design specification like the one quoted above, the specification is allowing for just about any material source, so long as the material meets the size …
mechanical engineering - Understanding hole specifications ...
Aug 19, 2018 · I am trying to interpret the hole specifications in the attached diagram. What does each component mean? I understand what 'Thru All' means, does 4x mean 4 holes? What is the diameter …
drafting - Difference between "Design Dwg." and "Mfg.Dwg ...
May 14, 2016 · I wonder what the difference between "Design Drawing" (or is it "Drawings"?) and "Manufacturing Drawing (s)" is. Is it that Mfg. Dwg. merely represents some part of Design Dwg. …
civil engineering - How is the design life of a reinforced concrete ...
The calculations are normally to some degree empirical. For a 'standard' structure, with a 'normal' exposure condition, 'normal' concrete characteristics, and 'normal' design life requirements, there will …
Calculation on gearbox design - Engineering Stack Exchange
Jun 28, 2022 · Motor specification-Torque is 356.35Nm, power 70hp. Gear ratio 1:10. Input shaft diameter 1.5" output shaft diameter 2". 2 stage parallel arrangements. What do I need to do to …
Should I reject a concrete mix design for having too high of a ...
Nov 17, 2015 · I usually design precast concrete members for the common concrete strength of f' c =4,000 psi at 28 days. Occasionally, a mix design will be submitted that has a very high strength. In …
Calculating shaft diameter - Engineering Stack Exchange
Oct 9, 2019 · A very important thing on 'Calculating shaft diameter' is fatigue failure. You should design your rotating shaft taking that into consideration, and not considering only a static load. This …
bolting - Why is the minimal bolt edge distance not affected by plate ...
Jun 14, 2020 · In the AISC specification, the minimum edge distance is a workmanship standard related to fabrication tolerances. Bolt bearing and tear-out are separate design checks that do include plate …