This write up contains design computations for selection of structural members for a greenhouse to be installed at Bhujodi. Straight wall gable roof form was selected. Wind load estimates made for wind angle 0 degree and 90 degree on air tight structure. Analysis was also carried out for left wall open. Effect of wind on the structure will be more serve when it is blowing at 0 degree. If the greenhouse happens to be open during high wind, the possibility of damage is increased. The steel requirement of structure in the present analysis is too high (28 kg/ m2). Conventionally it should not exceed 10 kg/m2. Therefore we will be reworking the structural design to reduce steel requirement. We will it in next paper.