What is Live load on roof?

Live Loads The weight of temporary objects on the roof is referred to as the live load. Live loads include the roofing crew and the equipment and tools they bring with them. A roof must be able to support both its dead load and live load at any given time.

How much water comes off my roof when it rains?

Every square foot of roof space collects . 6 gallons of water in a 1 inch rainfall.

How are rain loads calculated?

ds = Depth of water on the undeflected roof up to the inlet of secondary drainage system when the primary drainage system is blocked (in other words, the static head), in inches (mm). R = Rain load on the undeflected roof, in psf (kN/m2). For SI: 1 inch = 25.4 mm.

Is it safe to collect rainwater from roof?

The good news is *most* roofing materials are suitable for rainwater harvesting. While metal roofing or plastic sheeting (e.g. greenhouse roof) has the highest collection efficiency, most surfaces are a-ok. There’s just a short list of rooftop surfaces that rainwater harvesters should avoid.

How do you calculate roof live load?

Starts here10:28Structures Video Roof Loads – YouTubeYouTube

How do I calculate how much water is in my roof?

Roughly speaking, 1 millimetre of rain over 1 square metre of roof equals 1 litre of water. This capacity can be calculated using the following formula: Annual rainfall (in millimetres) x Roof surface area (in square metres) = Roof catchment capacity.

How do you calculate rain water discharge?

Storm water Discharge calculations: Using Rational formula i.e. Q=CIA Where Q – is design peak runoff rate m3/hr. I – Rainfall Intensity value in mm/hr. A – Catchment area in Ha.

What is the best roof for water collection?

It’s generally agreed that the most suitable roof materials for harvesting potable water are: COLORBOND® and ZINCALUME® steel (and similar aluminium, copper, galvanised steel or stainless steel roofing)

What type of roof is best for collecting rainwater?

Galvanized metal roofing especially is recommended for rainwater harvesting because the panels will be coated with a later of zinc, which seals the metal panels, prevents rusting, and lowers the levels of iron in your water.

How is a roof designed to support the load of rainwater?

Each portion of a roof shall be designed to sustain the load of rainwater that will accumulate on it if the primary drainage system for that portion is blocked plus the uniform load caused by water that rises above the inlet of the secondary drainage system at its design flow.

What is the live load on a roof?

The live load on a roof is the weight of any temporary objects on the roof. Where snow isn’t a problem, the live load can come from people working on the roof and any equipment they take on to the roof with them.

How much wind can a roof withstand?

The upward movement of the wind exerts an uplift load on the roof, and the roof must be able to resist this uplift. A typical uplift load limit assumes a maximum wind speed of about 90 miles per hour and expects a load of about 20 psf. Most of this load will be resisted by the roof’s downward-pushing dead load.

What is the IBC for a landscaped roof?

Section 1607.11.2.3 of the 2006 IBC is for landscaped roofs. I think this is more along the lines of what I’m thinking. This section provides for 20 psf live load and the weight of the landscaping is to be dead load and is to be based on the saturated soil weight.

https://www.youtube.com/watch?v=gjnGSh2UNJY