A fellow engineer is looking for information on a steel joist called perma-joist(on the drawings). The date of the building is the 1950's and they are used in the roof structure of a school building. I am assuming that this may be just a manufacture's name for a steel joist. Does any one have...
Are there any forms, report formats or guidelines for reporting on HUD manufactured home foundation inspections? I am aware of the HUD Permanent Foundations for Manufactured Homes Publications.
The Guide to the Use of the Wind Provisions of ASCE 7-02 indicates (in FAQ) that flat roof trusses should be designed as C&C. If these trusses(or joists) bear on masonry walls or beams, can the walls and beams and anchorages be designed for the MWFRS loads? The FAQ on gable trussses would seem...
Should the depth of pile caps be below frost? I seem to remember that being the case but I can find no codes, standards or guides stating that to be the case.
The 2004 CMAA 74 has some formulas for calculating lower flange bending stresses in monrail beams. Are these formulas correct? A previous Eng-Tip (2/6/03) indicated that there may be errors in the formulas. CMAA 74 does not give any theory behind the formulas. I have a old ACCO Chain and Lifting...
Are there any published stress values for pvc piping? I have found some values. Specifically, I am looking for shear (not torsional) values and yield strength. I am lookng to see if is possible for the a pvc pipe to shear off through the cross section of the pipe.
How is shear calculated on a circular pipe (column or beam)? I have one reference(Design Manual for Structural Tubing -1974) that says to use half the gross section - I am assuming gross area. This is shear across the member,not torsional shear. Why use half the gross section? Is there a shear...
