Because they are exposedtoweather and water, make sure your landscape lighting designer USES only weather-sealed units designed for outdoor use.
因为他们受到的天气和水,确保您的景观灯光设计只使用天气密封户外使用而设计单位。
2
Where glulam beams will be exposedtoweather, request a preservative-treated product or consider wood that has a natural resistance to decay, such as Alaska yellow cedar or Port Orford cedar.
Single sided -, intermittent -, chain - or zigzag welding will be allowed, as far as permissible according to the classification society, where structural parts are not exposedtoweather or moisture.