Points to note regarding installation
Engagement of supporting materials
When using the H system, bear in mind the engagement of supporting materials, and maintain a distance of at least h from the lower surface of the slab to the pipe center.
The installation method changes if a distance of at least h cannot be secured
Please contact us regarding seismic isolation amounts of 800mm
|①||1300mm or more|
＜h:Installation method if h of at least 1,300 mm cannot be secured＞
Valid h distance for the above installation
|Metal・fluoro carbon polymer materials||300~500||700|
Extraction strength of supporting materials anchor bolts
TOZEN will select the appropriate anchor bolts.
The calculation method for anchor bolt extraction strength is as follows.
Specifications of control suspension built-in coil spring
|Model||Standard hangers weight
|Allowable deflection amount:δ
Calculation of anchor bolt extraction strength
- X: Piping horizontal movement amount (seismic isolation amount)
L1: Piping suspension distance
L2: Piping suspension distance in the event of horizontal movement
L3: Control suspension operation absorption amount
- X=()mm (design seismic isolation amount)
L1: Refer to the various H system set diagrams
Control suspension deflection amount under static load
Total control suspension deflection amount during an earthquake
K: Control suspension spring constant
w:Weight of elbow piping and seismic isolation joints
OK if δ`＜300mm here
- ●Tension working on 1 anchor bolt
R=δ` × K/n・・・(kgf)
δ`:Control suspension deflection amount during an earthquake
K:Control suspension spring constant
n:Number of anchor bolts (normally n=2)
- ●Selection of anchor bolts
Please use anchor bolts or inserts which satisfy the R value above.
Please also refer to Building Installed Equipment Earthquake‐Resistant Design and Installation Guidelines (edited by The Building Center of Japan) when selecting anchor bolts.