Galvanized steel pipe or structural steel is ...

Galvanized steel pipe or structural steel is ...

Galvanized steel pipe or structural steel is preferred for this purpose.

Where the initial cost is the main consideration, wood may be used, but it has a poor appearance and is likely to sag.

Roofing glass should be new and of good grade, since poor glass may interfere with the quality of the light.

Single-strength glass is suitable for use on the Pacific Coast or other localities where there are no snow loads or high winds to be guarded against.

Double-strength glass should be used in more severe climates.

Glass can be used in sizes from sixteen by eighteen inches to eighteen by twenty-four inches.

It should be installed by being laid with lapped joints similar to those of a shingle roof, except that the laps between should be only one-eighth to one-fourth of an inch.

Wider laps are not advisable because the capillary action in the space between the lapped surfaces will cause leakage.

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Stay tuned for more orchid-growing advice tomorrow! :)




Woo hoo!