the Guide - VP Buildings

Eave Height
Varco Pruden Buildings Systems Guide
Question specs that are stricter than code
Contact your VP support person for assistance.
Look at partial walls impact.
Specified H/60 H/100 H/200
Deflection
20 4” 2.4” 1.2”
25 5” 3” 1.5”
30 6” 3.6” 1.8”
35 7” 4.2” 2.1”
40 8” 4.8” 2.4”
Allowable Movement
Lateral Deflection
Definitions and Background
There are two types of lateral deflection limits:
Building drift and In-span deflection of a vertical wall.
The following are definitions that are often used
with lateral deflection limits:
Bare Frame Deflection. Typical building
drift or frame sidesway criteria expresses lateral
movement in terms of "bare frame" deflection. Bare
frame deflection considers the stiffness of the frame
alone without any help from the roof or wall diaphragm
or column base fixety in most cases.
Actual lateral deflections of completed buildings
are less than theoretical calculations for "bare frames".
The MBMA Building Systems Manual goes into great
detail on this subject in Section C5.6 and Appendix A6.
The MBMA Manual and the AISC's Design Guide #3
"Serviceability Design Considerations for Low Rise
Buildings" both recommend using a 10-year mean
46