SPECIFICATIONS

Fort Nelson NRRM NOISE VIBRATION AND SECTION 15200
Airport Terminal Building SEISMIC CONTROL Page: 2
Washroom Renovations
7. Brace fuel gas and oil piping, medical gas piping and compressed air piping 25mm [1"] and
larger, all piping 32mm [1-1/4"] and larger located in boiler rooms, mechanical equipment
rooms and refrigeration machinery rooms and all pipes 65mm [2 ½"] diameter and larger in all
locations as follows:
- Provide pipe transverse bracing at 12.2m [40'] maximum centres unless otherwise noted.
On gas piping transverse bracing shall be at 6.1m [20'] maximum centres.
- Provide pipe longitudinal bracing at 24.4m [80'] maximum centres unless otherwise
noted. On gas piping longitudinal bracing shall be at 12.2m [40'] maximum centres.
- Transverse bracing for one pipe section may also act as longitudinal bracing for a section
connected perpendicular to it, if the bracing is installed within two feet of the elbow or
tee of similar size.
- Do not use branch lines to brace main lines
- Trapeze pipe hangers may be used. Provide flexibility in joints where pipes pass
through building seismic or expansion joints, or where rigidly supported pipes connect
to equipment with vibration isolators.
- Rigid piping shall not be braced to dissimilar parts of a building or building systems.
Examples: Wall and roof; solid concrete wall and a metal deck with lightweight concrete
fill.
- Provide pipe sleeves through walls and floors large enough to accommodate differential
movements.
8. Vertical Piping shall be:
- Secured at sufficiently close intervals to keep pipe in alignment and carry weight of pipe
and contents. Stacks shall be supported at their bases and if over two stories in height at
each floor by approved metal floor clamps.
- Support I.P.S. screwed pipe at not less than every other storey height.
- Support copper tubing 38mm [1½"] and larger diameter at each storey and smaller
tubing at not more than 1.8m [6'] intervals.
- For other approved pipe materials support in accordance with their approved installation
standards.
- Supported at a point or points above riser centre of gravity.
- Laterally guided at top and bottom of riser and at points not to exceed 9.1m [30‘] on
centre.
February 2012 JM BEAN & CO. LTD 1130.10