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
| Number | Details |
|---|---|
| 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
| Material | Seismic isolation amount(mm) |
h(mm) |
|---|---|---|
| Rubber | 300~600 | 700 |
| 700 | 1000 | |
| Metal・fluoro carbon polymer materials | 300~500 | 700 |
| 600 | 800 | |
| 700 | 1100 |
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 (Kgf) |
Allowable deflection amount:δ (mm) |
Spring constant (kgf/mm) |
|---|---|---|---|
| TZM-25(S) | 25 | 300 | 0.5 |
| TZM-100(S) | 100 | 300 | 2.0 |
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
L2=√X2+L12
L3=L2-L1
Control suspension deflection amount under static load
δ=w/k
Total control suspension deflection amount during an earthquake
δ`=w/k+L3
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.
