Building surveying practices and standards

Question 1 Q. 1. Look at the plans provided for Mr & Mrs Walk. Check the scope of AS4055 and the scope of AS1684.2 to see whether wind classification can be determined and whether components of this building can be sized using these Standards. Check with respect to: i. Wind classification Wind classification can be determined and the components of the building sized according to AS4055 and AS1684.2. The building height from the ground to under the eaves is 2.7m whereas according to AS4055_2012 section 1.2 for wind classification to be determined the distance from the ground t the underside of the eaves shall not exceed 6.0m. Also, AS1684.2_2010 section 1.4.2; states hat the maximum building height shall not exceed 8.5m. the two conditions have been satisfied hence the wind classification of the drawings provided by Mr and Mrs Walk can be done according to the two codes. ii. Plan shape Wind classification can be determined and the plan shape of the building sized according to AS4055 and AS1684.2. The shape of the house provided in the plan. AS4055_2012 section 1.4.6 and AS1684.2_2010 section 1.4.3 provides that the building shapes shall be essentially rectangular, square, L-shaped or a combination of rectangular elements including splayed-end and boomerang-shaped building. Hence, the building qualifies. iii. Number of storeys of timber framing Wind classification can be determined and the number of storeys of timber framing of the building sized according to AS4055 and AS1684.2. AS1684.2 section 1.4.4 provides that the number of storeys shall not exceed 2. The plans of the building provided by Mr and Mrs B Walk is a single storey hence within the scope of the codes. iv. Width Wind classification can be determined and the width of the building sized according to AS4055 and AS1684.2. The width of the building in the plan provided is 10540mm wide. According to AS1684.2_2010 section 1.4.5, the maximum width of the building shall be 16000mm, excluding eaves. Therefore, the width is within the acceptable width limits for analysis according to the codes. v. Wall height Wind classification can be determined and the wall height of the building sized according to AS4055 and AS1684.2. According to AS1684.2_2010 section 1.4.6, the maximum height shall be 3000mm. from the building elevations by Mr and Mrs B Walk, the maximum height is 2700mm which is within the limits provided hence the building can be analysed with these two codes. vi. Roof pitch Wind classification can be determined and the roof pitch of the building sized according to AS4055 and AS1684.2. According to AS1684.2_2010 section 1.4.7 the maximum roof pitch shall be 350. The roof pitch from the elevations of the building is 300 which fall within the scope of the codes hence can be analysed. vii. Roof type Wind classification can be determined and the roof type of the building sized according to AS4055 and AS1684.2. the roof construction can be hip, gable, skillion, cathedral, trussed or pitched, or in any combination. The roof type provided by Mr and Mrs B Walk is a conventional pitched roof which falls within the scope of AS1684.2_2010 thus can be analysed.