Southern pine span tables rafters3/8/2024 ![]() * Qualified students are those who are full-time students enrolled in a wood design course at a university or college.Ģ005 Design Values for Joists and Rafters ABOUT SOUTHERN PINE VALUES (Pricing for Span Tables and Design Values for Joists and Rafters 2005 Combo) This edition has been updated to the 2005 NDS Supplement Design Values. It is pretty rare a structure that has been standing for a long time collapses without warning without external damage occuring.A companion Supplement to Span Tables for Joists and Rafters, Design Values for Joists and Rafters tabulates allowable bending stress (Fb) and elastic modulus (E) values for visually graded and mechanically graded dimension lumber. īut if there are no wall cracks, the basement doesn't start leaking more than usual, doors and windows don't start jamming outside of humidity changes, and there are no other signs of structural weakening, you are probably fine. As far as b) well there is nothing you can do about that and it will possibly trump a). If you hire them to make recommendations to better stabilize the structure for longevity, that is what they will do. Obviously you need a licesensed structural to determine anything for sure.Īs far as a) scope is scope. If you just want to make sure it stays stable without levelling it, you can probably just install a cross beam and a lally column or two depending on the length of horizontal span. If you wanted to level it, it would have to be jacked, the walls on the low side would have to be at least partially rebuilt and pretty much all your plaster and lathe or drywall would crack to hell if you have that. Older timber frame houses were rarely built square or level to begin with. If there is no sagging after 100+ years and the beams rafters aren't splitting, you probably have no worries. So most of my comment doesn't apply.ĭo you mean 9 inches over 12 feet? 9 inches over 12 inches would be a hell of slope. Limit the use of engineering jokes.Ĭall for Engineers: Tell us about your job! (16 July 2020)Ģ020 List of engineers willing to be interviewedĢ019 List of engineers willing to be interviewedĮdits: I somehow missed 'rafter' and assumed it was a beam that was an issue. No low-effort one-liner comments, memes, or off-topic replies. Answers must contain an explanation using engineering logic, and assertions of fact must be supported by links to credible sources.īe substantive. ![]() Racism, sexism, or any other form of bigotry will not be tolerated.ĭon't answer if you aren't knowledgeable. All users are expected to behave with courtesy. Note that questions must still be specific to engineering and not a general opinion survey.īe respectful to other users. Mechanical, Electrical, Civil, Chemical, and Computer are reserved for technical questions only.ĭiscussion can be used for general questions that apply to multiple disciplines, including some workplace topics. Review the wiki prior to posting.Īvoid questions that can easily be answered by searching on the internet.Īvoid questions that have already be answered by a post in the FAQ section of the wiki. Most general career related questions should be placed in the Monday Career Megathread. ![]() Post titles must be a question about engineering and provide context - be specific. Call for Engineers: Tell us about your job! (2020) New to AskEngineers? Read our subreddit rules and FAQ page before posting! Topic Filters
0 Comments
Leave a Reply.AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |