ASSIGNMENT 2 49115 FAADE ENGINEERING1

ASSIGNMENT 2: DESIGN

QUESTION 1: Away from the automatic door, the glazing typically comprises two glass panels from floor level to the ceiling. If one of the bottom panels is damaged, explain if the glass assembly is structurally adequate without the bottom panel.

Answer 1: In my view, the glass assembly is structurally adequate without the bottom panel because the design concept for front entry of building 1 is patched point fixed structural glazing in which the corners of the bottom and top glass panels are held in place by rectangular steel brackets applied at both sides of glazing panel and held together by applying pressure and then seal the perimeter of panels using sealants. The top glass panels are hung from the building structure like a curtain using steel hangar brackets fixed at borders that transfer the all-vertical load of below glass panel to the building structure and also stabilise the glass wall assembly against the wind loading. Since, there is no vertical load imposed on the bottom panel by the top panel of glass, the glass assembly will remain stable but the weatherproofing and aesthetics of the building gets affected.

QUESTION 2: Similarly, if the top panel is damaged, explain if the glass assembly is structurally adequate without the top panel.

Answer 2: In my opinion, the glass assembly will not fall but loose the structural stability without the top panel. It must be immediately repaired because the bottom glass panel is fixed at the bottom but not enough to counter the wind loading by its own for the longer period. The damaged top panel affects the aesthetics and structural integrity, since, it stabilises the bottom glass panel against the wind loading. The top glass panels are hung from the building structure like a curtain using steel hangar brackets fixed at borders that transfer the all-vertical load of below glass panel to the building structure and also stabilise the glass wall assembly against the wind loading.

QUESTION 3: Calculate the wind loadsAnswer:

QUESTION 4: Without carrying out any calculations, describe in not more than 1 page how you would design the following components:a) Top panel b) Bottom panel c) Door panel Answer: a) Top panel: When designing a glazed curtain wall, there are many factors to consider: safety, stability, impact-resistance, durability and cost are the most important aspects to look at in glazed curtain walls. Top panels are fixed into the structure using the bolt system. These bolts transfer the dead load into the structure and act as a cantilever beam to resist the wind load. The entire weight of the glazing panels is transferred to the connection bracket through the bolts. The consideration is made to avoid any direct contact between the glass and metallic parts of the bolt that would result in formation and spreading of cracks within the glass panel.

b) Bottom Panel: The Corners of bottom panels and top panels are joined together with the spider arm. Fins are silicone glazed to facing panels and provide a four-sided support or fully framed support for these facing panels. Fins are used to prevent glass-facing panels from deflecting, breaking or falling out through wind load pressures. The bottom panel is fixed from bottom surface. Now, top and bottom panel are aligned together and weatherproof sealant are used to at joints of panels.

c) Door Panel: Automatic sliding doors have suspended rollers fitted to a top patch and slide in a track in the assembly fitted. A floor guide is mounted on the floor at the sliding end of the opening to keep the door plumb. The suspended roller must sustain the action of wind loading on the doors.

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SHASHANK SHEKHAR MISHRA 4/05/2015 Student Id: 12174710