Open Polygon Gazebo

A free-standing open gazebo of six or eight sides, optionally stretched, with round-headed or straight braces under a hipped shingled roof. Six or eight sides and the elongation, Plan size, overall height and eave height, Post, header and rafter sizes, Brace style and size, Timber and roof covering finish

Details

Category: Gazebos › Gazebos and Garden Pavilions

By Huu Khanh Nguyen · Updated November 5, 2026

Parameters

Name	Default	Unit
Width across corners	4800	mm
Depth	2 * radius * Math.cos(Math.PI / sides)	mm
Height	3160	mm
Eave height	2100	mm
Sides	6
Elongation	0	mm
Roof overhang	400	mm
Roof board thickness	20	mm
Post size	120	mm
Header width	203.2	mm
Header depth	254	mm
Rafter width	101.6	mm
Rafter depth	203.2	mm
Knee brace length	538.8	mm
Knee brace width	101.6	mm
Knee brace depth	203.2	mm
Brace style	round
Round brace run	780	mm
Round brace rise	350	mm
Timber	timberSpruceGlulam
Roof covering	asphaltShingleBlack
drop	roofThickness * Math.sqrt(1 + ((roofTop - eaveHeight) / (radius * Math.cos(Math.PI / sides))) * ((roofTop - eaveHeight) / (radius * Math.cos(Math.PI / sides))))	mm
radius	(sizeX - elongation) / (2 * (sides == 8 ? Math.cos(Math.PI / sides) : 1))	mm
phase	sides == 8 ? 22.5 : 0
shingleDrop	5 * Math.sqrt(1 + ((sizeZ - eaveHeight) / (radius * Math.cos(Math.PI / sides))) * ((sizeZ - eaveHeight) / (radius * Math.cos(Math.PI / sides))))	mm
roofTop	sizeZ - 2 * shingleDrop	mm